DEPARTMENT OF THE INTERIOR 
 
 UNITED STATES GEOLOGICAL SURVEY 
 
 GEORGE OTIS SMITH, DlBKCTOB 
 
 Water-supply Paper 336 
 
 WATER RESOURCES OF HAWAII 
 
 1912 
 
 BY 
 
 G. H. PIERCE and G. K. LARRISON 
 
 WASHINGTON 
 
 GOVERNMENT PRINTING OFPIO! 
 1914 
 
 
Glass £, B&h?- 
 
 Book . ^4 /) 5"ff 
 
DEPARTMENT OF THE INTERIOR 
 UNITED STATES GEOLOGICAL SURVEY 
 
 GEORGE OTIS SMITH, Director 
 
 Water- Supply Paper 336 
 
 WATER RESOURCES OF HAWAII 
 
 1912 
 
 <f> 7 O 
 
 BY 
 
 C. H. PIERCE and G. K. LARRISON 
 
 WASHINGTON 
 
 GOVERNMENT PRINTING OFFIO 
 1914 
 
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AA-n 5 , 
 
 1 DM 
 JAN 12 1915 
 
CONTENTS. 
 
 Page. 
 
 Authority for investigations 9 
 
 Cooperation 10 
 
 Scope of work 10 
 
 Field methods of measuring stream flow 11 
 
 Base data 11 
 
 Weir measurements 11 
 
 Velocity-area method 12 
 
 Definition of terms 16 
 
 Convenient equivalents. 18 
 
 Office methods of computing and studying discharge and run-off 19 
 
 Explanation of tables 22 
 
 Accuracy and reliability of field data and comparative results 24 
 
 Division of work 24 
 
 Gaging stations maintained in Hawaii. . . . . . 25 
 
 Geography of the Hawaiian Islands 29 
 
 Station records 34 
 
 Island of Kauai 34 
 
 Waimea River basin 34 
 
 Waimea River near Waimea, Kauai 34 
 
 Kawaikoi Stream near Waimea, Kauai 35 
 
 Waiakoali Stream near Waimea, Kauai 37 
 
 Mohihi Stream near Waimea, Kauai 38 
 
 Waialae Stream near Waimea, Kauai 39 
 
 Kekaha ditch at camp No. 1, near Waimea, Kauai. 40 
 
 Kekaha ditch at flume No. 2, near Waimea, Kauai 42 
 
 Kekaha ditch at siphon near Waimea, Kauai 42 
 
 Kekaha ditch at tunnel No. 12, near Waimea, Kauai 43 
 
 Waimea ditch near Waimea, Kauai 45 
 
 Kamenehune ditch near Waimea, Kauai 47 
 
 Makaweli River basin 48 
 
 Makaweli River near Waimea, Kauai , 48 
 
 Halekua Stream near Waimea, Kauai 50 
 
 Olokele ditch at tunnel No. 12, near Makaweli, Kauai 50 
 
 Olokele ditch at weir near Waimea, Kauai 52 
 
 Poowaiomahaihai ditch near Waimea, Kauai 53 
 
 Hanapepe River basin 55 
 
 East Branch of Hanapepe River at Hanapepe Falls, near Eleele, 
 
 Kauai 55 
 
 Hanapepe River at Koula, near Eleele, Kauai. . 55 
 
 Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai 57 
 
 Hanapepe ditch at Koula, near Eleele, Kauai 59 
 
 Hanapepe ditch at weir near Hana pepe, Kauai 60 
 
 Hanapepe River at Hanapepe Falls, near Eleele, Kauai 62 
 
 Hiloa ditch at Hanapepe Falls, near Eleele, Kauai. 62 
 
4 CONTENTS. 
 
 Station records — Continued. 
 
 Island of Kauai — Continued. Page. 
 
 Huleia River basin 63 
 
 Huleia River near Lihue, Kauai 63 
 
 Hanamaulu River basin 64 
 
 Hanamaulu River at Kapaia, near Lihue, Kauai 64 
 
 Wailua River basin 66 
 
 South Fork of Wailua River above Waiehu Falls, near Lihue, 
 
 Kauai 66 
 
 Lihue ditch near Lihue, Kauai ..... 68 
 
 Hanamaulu ditch at siphon near Lihue, Kauai 70 
 
 North Fork of Wailua River near Lihue, Kauai 71 
 
 Uhau Iole Stream at 750-foot elevation near Lihue, Kauai 73 
 
 East Branch of North Fork of Wailua River, near Lihue, Kauai. . 74 
 
 Keahua Stream at 750-foot elevation near Lihue, Kauai. 75 
 
 Kawi Stream at 750-foot elevation near Lihue, Kauai 75 
 
 Kanaha ditch at intake, near Lihue, Kauai 76 
 
 Konohiki Stream basin 77 
 
 Konohiki Stream at Makakualele mauka weir, near Kapaa, Kauai. 77 
 
 Konohiki Stream at Makakualele makai weir, near Kapaa, Kauai. . 78 
 
 Kaehulua Stream basin 79 
 
 North Fork of Kaehulua Stream at Kainahola weir, near Kapaa, 
 
 Kauai 79 
 
 Kaehulua Stream at Kuhinoa weir, near Kapaa, Kauai 80 
 
 South Fork of Kaehulua Stream at Wainamuamu weir, near Kapaa, 
 
 Kauai 81 
 
 Kapaa River basin 82 
 
 Kapaa River at Kapahi, near Kapaa, Kauai 82 
 
 Akulikuli Spring at weir near Kapaa, Kauai 84 
 
 Kapahi ditch at Kapahi, near Kapaa, Kauai 85 
 
 Kaneha ditch, at weir near Kealia, Kauai 86 
 
 Anahola River basin 87 
 
 Anahola River at 1,140-foot elevation near Kealia, Kauai 87 
 
 Anahola River above dam at Kiokala, near Kealia, Kauai 88 
 
 Anahola ditch at Kiokala, near Kealia, Kauai 89 
 
 Kalihiwai River basin 96 
 
 Kalihiwai River near Kilauea, Kauai 90 
 
 Hanalei River basin 91 
 
 Hanalei River near Hanalei, Kauai 91 
 
 China ditch near Hanalei, Kauai. 92 
 
 Kuna ditch near Hanalei, Kauai 93 
 
 Lumahai River basin 95 
 
 Lumahai River near Wainiha, Kauai 95 
 
 Wainiha River basin 95 
 
 Wainiha River near Wainiha, Kauai 95 
 
 Wainiha canal at intake, near Wainiha, Kauai 97 
 
 Miscellaneous measurements on Kauai in 1912 98 
 
 Pumped water on Kauai 99 
 
 Ditch seepage and losses on Kauai 99 
 
 Island of Oahu 100 
 
 Palolo Stream basin 100 
 
 Waiomao Stream at 900-foot elevation near Honolulu, Oahu 100 
 
 Waiomao Stream above Pukele Stream, near Honolulu, Oahu 102 
 
 Pukele Stream at Mahoe Springs, near Honolulu, Oahu 104 
 
CONTENTS. 5 
 
 Station records — Continued. 
 
 Island of Oahu — Continued. Page. 
 
 Manoa Stream basin. 106 
 
 Manoa Stream at upper end of valley near Honolulu, Oahu. ..... 106 
 
 Manoa Stream at College of Hawaii near Honolulu, Oahu 108 
 
 Manoa Stream at Waialae road, near Honolulu, Oahu 108 
 
 Pauoa Stream below Kahuawai Spring near Honolulu, Oahu 109 
 
 Kahuawai Spring near Honolulu, Oahu 110 
 
 Nuuanu Stream basin Ill 
 
 Nuuanu Stream at Kuakini Street, Honolulu, Oahu. Ill 
 
 Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu 113 
 
 Luakaha weir in Nuuanu Valley, near Honolulu, Oahu. 115 
 
 Waikane Stream basin 116 
 
 Waikane Stream near Waikane, Oahu 116 
 
 Waiahole Stream basin 117 
 
 "Waiahole Stream at Manianiaula, near Waikane, Oahu 117 
 
 Waiahole Stream at Waiahole, near Waikane, Oahu 119 
 
 Kahanaiki Stream near Waimanalo, Oahu 121 
 
 Kailua Stream near Waimanalo, Oahu 122 
 
 Pohakea Stream near Waimanalo, Oahu 122 
 
 Kamakalepo Stream near Waimanalo, Oahu 123 
 
 Kaimi Stream near Waimanalo, Oahu 124 
 
 Makawao Stream near Waimanalo, Oahu 124 
 
 Makawao ditch near Waimanalo, Oahu 125 
 
 Wong Leong ditch near Waimanalo, Oahu 125 
 
 Waimanalo ditch below reservoir near Waimanalo, Oahu 126 
 
 Pump ditch near Waimanalo, Oahu 127 
 
 Miscellaneous measurements on Oahu in 1912 128 
 
 Artesian wells 128 
 
 Island of Maui 129 
 
 West Maui 129 
 
 Kahakuloa Stream basin 129 
 
 Kahakuloa Stream at Kahakuloa, near Waihee, Maui 129 
 
 Waihee Stream basin . . . . 130 
 
 Waihee Stream at dam near Waihee, Maui. 130 
 
 Waihee canal near Waihee, Maui 132 
 
 Waihee canal at weir near Wailuku, Maui. . . 133 
 
 Spreckels ditch near Waihee, Maui 134 
 
 Waiehu Stream basin 135 
 
 North Waiehu Stream near Wailuku, Maui 135 
 
 South Waiehu Stream near Wailuku, Maui. . . ... 136 
 
 Iao Stream basin ; 137 
 
 Iao Stream near Wailuku, Maui 137 
 
 Maniania ditch near Wailuku, Maui 139 
 
 Waikapu Stream basin 141 
 
 Waikapu Stream near Waikapu, Maui 141 
 
 South Side Waikapu ditch near Waikapu, Maui 142 
 
 Palolo (Everett) ditch near Waikapu, Maui 144 
 
 Ukumehame Stream basin 146 
 
 Ukumehame Stream near Olowalu, Maui 146 
 
 Olowalu Stream basin 147 
 
 Olowalu ditch No. 1, near Olowalu, Maui 147 
 
 Launiupoko Stream basin ... 149 
 
 Launiupoko Stream near Lahaina, Maui .. .., - - - 149 
 
6 CONTENTS. 
 
 Station records — Continued. 
 Island of Maui — Continued. 
 
 West Maui — Continued. Page. 
 
 Kauaula Stream basin 151 
 
 Kauaula Stream near Lahaina, Maui. 151 
 
 . Kauaula ditch near Lahaina, Maui 152 
 
 Lahainaluna Stream basin 154 
 
 Lahainaluna Stream near Lahaina, Maui 154 
 
 Kahoma Stream basin 155 
 
 Kahoma Stream near Lahaina, Maui 155 
 
 Kahoma ditch at weir near Lahaina, Maui '.' 156 
 
 Honokawai Stream basin . " 157 
 
 Honokawai ditch near Lahaina, Maui 157 
 
 Honolua Stream basin .- . 158 
 
 Honolua ditch near Honokahau, Maui 158 
 
 Honokahau Stream basin 159 
 
 Honokahau ditch at intake, near Honokahau, Maui 159 
 
 Honokahau ditch at Honokawai weir, near Honokahau, Maui . . 160 
 
 Miscellaneous measurements , 162 
 
 East Maui — 
 
 Koolau ditch region 162 
 
 Koolau ditch near Keanae, Maui 162 
 
 Spreckels ditch region 164 
 
 Haipuaena Stream near Huelo, Maui 164 
 
 Puohakamoa Stream near Huelo, Maui. 166 
 
 Alo Stream near Huelo, Maui 168 
 
 "Waikamoi Stream near Huelo, Maui 169 
 
 Oopuola Stream near Huelo, Maui 171 
 
 Spreckels ditch at station No. 1, near Huelo, Maui 172 
 
 Spreckels ditch at station No. 2, near Huelo, Maui 174 
 
 Spreckels ditch at station No. 3, near Huelo, Maui 176 
 
 Spreckels ditch at station No. 4, near Heulo, Maui 178 
 
 Spreckels ditch at station No. 5, near Heulo, Maui 179 
 
 Spreckels ditch at station No. 6, near Huelo, Maui 181 
 
 Spreckels ditch at station No. 7, near Huelo, Maui 183 
 
 Spreckels ditch at station No . 8, near Huelo, Maui 185 
 
 Center ditch region 186 
 
 Center ditch near Huelo, Maui 186 
 
 Hamakua ditch region , 188 
 
 Nailiilihaele Stream near Huelo, Maui 188 
 
 Kailua Stream near Huelo, Maui 189 
 
 Hoolawaliilii Stream near Huelo, Maui 190 
 
 Hoolawanui Stream near Huelo, Maui 191 
 
 Honopou Stream near Huelo, Maui 193 
 
 Halehaku Stream weir near Huelo, Maui 194 
 
 Opana Stream near Huelo, Maui P 196 
 
 Opana ditch near Huelo, Maui 196 
 
 New Hamakua ditch at Nailiilihaele weir, near Huelo, Maui. 198 
 
 New Hamakua ditch at Halehaku weir, near Huelo, Maui . . . 199 
 
 New Hamakua ditch at station No. 1, near Huelo, Maui 200 
 
 New Hamakua ditch at station No. 2, near Huelo, Maui 200 
 
 New Hamakua ditch at station No. 3, near Huelo, Maui 201 
 
 New Hamakua ditch at station No. 4, near Huelo, Maui 202 
 
 New Hamakua ditch at station No. 5, near Huelo, Maui 203 
 
CONTENTS. 7 
 
 Station records — Continued. 
 Island of Maui — Continued. 
 East Maui — Continued. 
 
 Hamakua ditch region — Continued. Page. 
 
 Old Hamakua ditch at Opana weir, near Huelo, Maui 204 
 
 Kaluanui ditch at Puuomalei, near Hamakuapoko, Maui 205 
 
 Lowrie ditch at Opana weir, near Huelo, Maui 207 
 
 Haiku ditch at Peahi weir, near Huelo, Maui 208 
 
 Miscellaneous measurements 209 
 
 Pumped water on Maui. 209 
 
 Island of Hawaii 212 
 
 Hilo group of streams 212 
 
 Wailuku River near Hilo, Hawaii 212 
 
 Honolii River at Kaiwiki, near Hilo, Hawaii 213 
 
 Kawainui River at Pepeekeo, near Hilo, Hawaii 215 
 
 Stations Nos. 1, 2, 3, and 4, at Piihonua, near Hilo, Hawaii 216 
 
 Stations at 2,700-foot level in the forest back of Hilo, Hawaii 219 
 
 Station records 219 
 
 Hamakua group of streams 367 
 
 Kawainui River near Waipio, Hawaii 367 
 
 Waipio River below Koiawe, near Waipio, Hawaii. 368 
 
 Waipio River below Waima Stream, near Waipio, Hawaii 369 
 
 New Hamakua ditch at Waima Stream, near Waipio, Hawaii 369 
 
 New Hamakua ditch at main weir, near Kukuihaele, Hawaii 370 
 
 Kohala group of streams 371 
 
 Kohala ditch near Kohala, Hawaii 371 
 
 Miscellaneous measurements 381 
 
 Rain gaging 381 
 
 Index 387 
 
WATER RESOURCES OF HAWAII, 1912. 
 
 By C. H. Pierce and G. K. Larrison. 
 
 AUTHORITY FOR INVESTIGATIONS. 
 
 This volume contains results of measurements of the flow of cer- 
 tain streams and ditches in the Territory of Hawaii made during the 
 calendar year 1912. The investigations leading to the report were 
 made by the United States Geological Survey in cooperation with the 
 Territory of Hawaii, under the general sanction of the organic law 
 of the Survey (Stat. L., vol. 20, p. 394), which contains the following 
 paragraph: 
 
 Provided, That this officer [the Director] shall have the direction of the geological 
 survey and the classification of public lands and examination of the geological struc- 
 ture, mineral resources, and products of the national domain. 
 
 As water is the most abundant and most valuable of the minerals, 
 the investigation of water resources is authorized under the provision 
 for examining mineral resources. The work has been supported since' 
 the fiscal year ending June 30, 1895, by appropriations in successive 
 sundry civil bills passed by Congress under the following item: 
 
 For gaging the streams and determining the water supply of the United States, and 
 for the investigation of underground currents and artesian wells, and for the prepara- 
 tion of reports upon the best methods of utilizing the water resources. 
 
 The legislature of the Territory of Hawaii approved on March 22, 
 1909, "An act to promote the conservation and development of the 
 natural resources of the Territory/ ' which provided in substance as 
 follows : A special tax of 2 per cent shall be levied, assessed, and col- 
 lected annually on all incomes in excess of $4,000; and all amounts 
 so collected shall constitute a special fund to be expended only for 
 the encouragement of immigration and the conservation of natural 
 resources in the proportion of three-fourths for immigration and one- 
 fourth for conservation. The conservation fund shall be used for the 
 development, conservation, improvement, and utilization of the nat- 
 ural resources and shall be available for expenditure at such times 
 and in such manner as a board of three persons appointed in accord- 
 ance with section 80 of the organic act shall, with the approval of the 
 governor, determine. 
 
 An act of April 26, 1911, amended the original act so as to extend 
 
 it until December 31, 1913. 
 
 9 
 
10 WATER RESOURCES OF HAWAII, 1912. 
 
 COOPERATION. 
 
 Under the authority conferred by the Federal and Territorial 
 legislation, the Director of the United States Geological Survey and 
 the Governor of the Territory of Hawaii entered into a cooperative 
 agreement, dating from July 1, 1910, for "the gaging of streams and 
 the determination of the water supply of the Territory of Hawaii." * 
 The principal features of this agreement are : 
 
 1 . The United States Geological Survey assumes the responsibility 
 of gathering, analyzing, and publishing the data. 
 
 2. During the progress of the work all notes, maps, and data gath- 
 ered as a result of field studies are at all times open to inspection by 
 the representative of the Territory, and if they are not entirely satis- 
 factory the agreement can be terminated. 
 
 3. Accounts for payment of salaries, travel and subsistence, sup- 
 plies, or other expenses necessary to the completion of the work shall 
 be rendered in the manner required by the laws and regulations of 
 the contracting parties, and vouchers shall be preferred to either 
 party for payment according as it may be convenient or according 
 to the balance remaining in the respective allotments. 
 
 4. The cost of publication is borne entirely by the Geological 
 Survey. 
 
 The Territory of Hawaii has been represented in the cooperation 
 
 by the board of allotment appointed by Gov. Walter F. Frear, and 
 
 consists of J. P. Cooke (chairman), Marston Campbell, and E. V. 
 
 Wilcox. 
 
 SCOPE OF WORK. 
 
 The investigations of stream flow in the Territory are not complete, 
 nor do they include all the streams that might advantageously be 
 studied. They include, however, as many of the streams and ditches 
 on the four larger islands as the available appropriations would allow. 
 It is essential that records of stream flow should be kept during a period 
 of years long enough to determine within reasonable limits the range 
 of flow from the maximum to the minimum. The length of such a 
 period manifestly varies for different streams; Experience has shown 
 that the records should be kept from 5 to 20 years. 
 
 In the performance of this work an effort is made to reach the 
 highest degree of precision possible with a rational expenditure of 
 time and money. In all engineering work there is a point beyond 
 which refinement is needless and wasteful, and this statement applies 
 with especial force to stream-measurement work in Hawaii. It has 
 been found, however, that it is possible to obtain data which are 
 sufficiently accurate, although many of them presented in this report 
 are for periods too short to admit of definite conclusions. 
 
 1 The United States Geological Survey is also cooperating with the Territory of Hawaii in mapping the 
 several islands. The whole of the island of Kauai and a part of the island of Hawaii have been mapped. 
 
FIELD METHODS OF MEASURING STREAM FLOW. 11 
 
 Records have been obtained at about 200 different points in the 
 Territory, and in addition to the observations at the regular stations, 
 miscellaneous measurements at many other places have been made. 
 Records have also been collected regarding precipitation on areas 
 drained by the principal streams and at a number of points in the 
 mountains at high elevations. Evaporation losses have been studied 
 and data obtained at various places where such losses are serious. 
 
 FIELD METHODS OF MEASURING STREAM FLOW. 
 
 BASE DATA. 
 
 In making plans for power, irrigation, municipal water supply, and 
 other projects involving the use of water from surface streams it is 
 necessary to have data from which both the total flow of the stream 
 and its distribution from day to day throughout the year can be 
 obtained. The data necessary for obtaining such information are 
 daily gage heights, which give the fluctuations of rise and fall of the 
 stream, and measurements of discharge at various stages, from which 
 a rating curve and table can be prepared, giving the discharge for 
 any stage. Such a rating is possible from the fact that so long as the 
 conditions at the controlling point in the stream remain the same 
 there will be the same discharge for any given gage height. 
 
 The determination of a discharge is termed a discharge measure- 
 ment and points at which discharge measurements are made and 
 records of daily fluctuations of stage are kept for determining the 
 daily flow are termed gaging stations. 
 
 Gaging stations may be divided into two classes, known as weir 
 stations and velocity-area stations. At weir stations the head of 
 water on the crest of the weir is measured and the discharge com- 
 puted by means of a formula. The discharge at velocity-area 
 stations is obtained by measuring the velocity of the current and 
 the area of the cross-section, the product of the two giving the dis- 
 charge. 
 
 The data presented in this paper were collected at both weir and 
 velocity-area stations. 
 
 WEIR MEASUREMENTS. 
 
 Unquestionably a weir properly constructed and of a type for 
 which accurate coefficients have been determined is one of the most 
 convenient and reliable means of measuring small quantities of water. 
 In practice, however, weirs rarely conform to the requirements 
 imposed by the experimenter who derived the coefficients. If the 
 crest of the weir is sharp and clean and sufficiently high above the 
 bottom of the leading channel and the end contractions are complete 
 and the velocity of approach is wanting, or negligibly small, and if 
 the head on crest is measured at a distance of 6 or 8 feet back of the 
 
12 WATER RESOURCES OF HAWAII, 1912. 
 
 overfall, the Francis formula will give good results. On the other 
 hand, if these essential conditions are not complied with, especially 
 if the velocity of approach is considerable, and the contractions are 
 imperfect, the Francis formula will not give accurate results. This 
 is particularly true if the weir is improperly constructed and there is 
 leakage around and under it, as is so frequently the case in practice. 
 Observations made on various types of weirs in Hawaii show that 
 of the weirs in use in the Territory not all are giving accurate results. 
 If the error is known so that corrections can be made the trouble is 
 largely mitigated, but faulty weir records are too often accepted with- 
 out investigation as to their accuracy. 
 
 VELOCITY- ARE A METHOD. 
 
 The velocity-area method of measurement consists of determining 
 the mean or average velocity of the water past a given cross-section 
 area. The area of the cross section at right angles to the direction 
 of flow is determined by soundings which are taken at such distances 
 apart as will develop the contour of the stream bed. The depths are 
 recorded and also their distances from some arbitrarily chosen initial 
 point on one side of the stream. 
 
 The method of making the soundings depends on the size and stage 
 of the stream. On ditches and small streams, where the depths and 
 velocities are not large, a graduated rod may be used to advantage; 
 on large streams, which must be measured from bridges or cables, a 
 lead weight and sounding line must be used. The weights are of 
 different sizes — 6 J, 10, or 15 pounds — according to the swiftness of 
 the current, and are torpedo shaped, so as to offer as little resistance 
 as possible to the moving water. 
 
 On streams with beds which are permanent or nearly so, like the 
 South Fork of Wailua River on the island of Kauai and the Wai- 
 luku River on the island of Hawaii, a standard cross section is 
 usually constructed from careful soundings and referred to the zero 
 of the gage, so that the depths for any stage can be found by adding 
 the gage height at that stage to the depths below the zero of the gage. 
 This method is especially useful at high stages, where it is difficult 
 to make accurate soundings. 
 
 After the cross-section area of the stream has been measured by 
 soundings and horizontal distances, the velocity is determined at a 
 number of points. These measurements of velocity should be made 
 at frequent intervals across the stream and close enough to take ac- 
 count of any abrupt change in the velocity. For convenience, the 
 velocities are usually observed in the same verticals at which sound- 
 ings are made. On some streams fairly good measurements of veloci- 
 ties may be made by means of subsurface floats. This method is 
 applicable, however, only to channels of uniform cross-section area 
 
FIELD METHODS OF MEASURING STEEAM FLOW. 13 
 
 over a considerable distance and is very unsatisfactory for use on 
 natural streams like those of Hawaii. 1 
 
 The velocity of flow is best determined by the current meter, which 
 is a form of water wheel actuated by the current, and of such size and 
 shape that it can easily be placed at any point in the stream. 
 
 The new type of penta-recording current meter consists of six cups 
 attached to a vertical shaft which revolves on a conical hardened- 
 steel point when immersed in moving water. The revolutions are 
 indicated electrically. The rating, or relation between the velocity 
 of moving water and the revolutions of the wheel, is determined for 
 each meter by drawing it through still water for a given distance 
 at different speeds and noting the number of revolutions for each 
 run. From these data a rating table is prepared which gives the 
 velocity in feet per second of moving water for any number of revo- 
 lutions in a given time interval. The ratio of revolutions per second 
 to velocity of flow in feet per second is very nearly a constant for 
 all speeds and is approximately 0.45. 
 
 Three classes of methods of measuring velocity with current meters 
 are in general use — multiple-point, single-point, and integration. 
 
 The two principle multiple-point methods in general use are the 
 vertical velocity curve and 0.2 and 0.8 depth. 
 
 In the vertical velocity-curve method a series of velocity determi- 
 nations are made in each vertical at regular intervals, usually about 
 10 to 20 per cent of the depth apart. By plotting these velocities as 
 abscissas and their depths as ordinates and drawing a smooth curve 
 among the resulting points, the vertical velocity curve is developed. 
 This curve shows graphically the magnitude and changes in velocity 
 from the surface to the bottom of the stream. The mean velocity 
 in the vertical is then obtained by dividing the area bounded by 
 this velocity curve and its axis by the depth. This method of obtain- 
 ing the mean velocity in the vertical is probably the best known, but 
 on account of the length of time required to make a complete meas- 
 urement its use is largely limited to the determination of coefficients 
 for purposes of comparison. 
 
 In the second multiple-point method the meter is held successively 
 at 0.2 and 0.8 depth, and the mean of the velocities at these two points 
 is taken as the mean velocity for that vertical. On the assumption 
 that the vertical velocity curve is a common parabola with horizontal 
 axis, the mean of velocities at 0.22 and 0.79 depth will give (closely) 
 the mean velocity in the vertical. Actual observations under a 
 wide range of conditions show that this multiple-point method gives 
 the mean velocity very closely for open-water conditions and that in 
 a completed measurement it seldom varies as much as 1 per cent 
 
 1 Further information regarding the float method is given in Water-Supply Paper 95 and in textbooks 
 on stream flow. 
 
14 WATER RESOURCES OF HAWAII, 1912. 
 
 from the value given by the vertical velocity-curve method. It is 
 very extensively used in the regular practice of the United States 
 Geological Survey. 
 
 The single-point method consists in holding the meter either at 
 the depth of the thread of mean velocity or at an arbitrary depth 
 for which the coefficient for reducing to mean velocity has been 
 determined or must be assumed. 
 
 Extensive experiments by means of vertical velocity curves show 
 that the thread of mean velocity generally occurs between 0.5 and 
 0.7 total depth. In general practice the thread of mean velocity is 
 considered to be at 0.6 depth, and at this point the meter is held in 
 most of the measurements made by the single-point method. A 
 large number of vertical velocity curve measurements, taken on 
 many streams and under varying conditions, show that the average 
 coefficient for reducing the velocity obtained at 0.6 depth to mean 
 velocity is practically unity. The variation of the coefficient from 
 unity in individual cases is, however, greater than in the 0.2 and 0.8 
 method and the general results are not as satisfactory. 
 
 In the other principal single-point method the meter is held near 
 the surface, usually 1 foot below, or low enough to be out of the effect 
 of the wind or other disturbing influences. This is known as the sub- 
 surface method. The coefficient for reducing the velocity taken at 
 the subsurface to the mean has been found to be in general from 
 about 0.85 to 0.95, depending on the stage, velocity, and channel 
 conditions. The higher the stage the larger the coefficient. This 
 method is especially adapted for flood measurements, or for measure- 
 ments when the velocity is so great that the meter can not be kept 
 in the correct position for the other methods. 
 
 The vertical integration method consists in moving the meter at a 
 slow but uniform speed from the surface to the bottom and back again 
 to the surface and noting the number of revolutions and the time 
 taken in the operation. This method has the advantage that the 
 velocity at each point of the vertical is measured twice. It is useful 
 as a check on the point methods. In using the Price meter great 
 care should be taken that the vertical movement of the meter is not 
 rapid enough to vitiate the accuracy of the resulting velocity deter- 
 mination. 
 
 In practical work on rough streams, such as exist in Hawaii, the 
 meter should be held at 0.6 depth for depths of 0.8 or less. For 
 greater depths the meter should be held at two points in the vertical, 
 0.2 and 0.8 from tho surface. 
 
 When the mean velocities in the different verticals have been 
 found, the average of two adjacent means is taken as the mean 
 velocity for that individual section. The area of the section is 
 
FIELD METHODS OF MEASURING STREAM FLOW. 15 
 
 computed by multiplying the width of the section by the mean depth. 
 The discharge of each section is then the product of the area multiplied 
 by the mean velocity, and the total discharge of the stream results 
 from summing up the discharge of the individual' sections. In prac- 
 tice the work is tabulated in such a way as to render the computation 
 very simple. 1 
 
 Current-meter measurements are not practicable where there are 
 eddies, cross currents, swirls, or passages for the water underneath 
 stones. It is usually possible, however, to improve the channel by 
 removing bowlders and rocks, so that a satisfactory measuring 
 section may be obtained, even on rough, steep streams such as exist 
 in Hawaii. 
 
 Three kinds of velocity-area gaging stations are in general use in 
 Hawaii, according to the means provided for making the observations 
 of depth and velocity. They are wading, bridge, and cable stations. 
 
 A wading station is one at which measurements are made only 
 by wading — that is, no means exist for getting above the water at 
 any stage except by wading. Such stations are usually on ditches 
 or wide, shallow streams, which do not fluctuate greatly in flow. 
 Frequently, however, measurements are made at low stages by wading, 
 even though other means exist for making measurements at higher 
 stages. 
 
 A bridge station is one at which the meter is used from a bridge. 
 In some places highway or other bridges are available from which 
 to make measurements, but generally they are not at the right place 
 on the stream. Special bridges are then built. 
 
 A cable station is one at which measurements are made from a 
 cable spanning the stream. Cable stations are used on large streams, 
 such as Hanapepe, Wailua, and Hanalei rivers on the island of Kauai, 
 and Wailuku Kiver on the island of Hawaii. The cable supports the 
 car from which a man works above the water. Distances are marked 
 off on the cable itself or on a small auxiliary cable stretched taut 
 above it. 
 
 A suitable place for a gaging station having been selected, a staff 
 gage is set in the edge of the stream, either vertical or inclined, but 
 graduated into tenths, half tenths, or hundredths of feet vertically. 
 The gage is securely fastened to rocks or trees to prevent displace- 
 ment by floods and is so placed that the zero, or reference datum, 
 is well below extreme low water. The datum is also referred to a 
 permanent bench mark as an additional precaution. An observer is 
 then engaged to record the heights of water, morning and evening; 
 the mean of the two readings being used as the mean gage height for 
 the day. 
 
 1 For a discussion of methods of computing the discharge of a stream see Engineering News, June 25, 
 J9C8, 
 
16 WATER RESOURCES OF HAWAII, 1912. 
 
 Owing to the rapid rise and fall of most of the streams in Hawaii, 
 two gage-height readings a day will not as a rule give a true mean 
 for the 24 hours. For this reason, and also owing to the fact that 
 many of the gaging -stations are necessarily situated in the mountains 
 at points remote from all habitations and difficult of access, the use 
 of automatic recording gages has been found to be generally neces- 
 sary. The gages used are of various types, some requiring weekly 
 visits and others operating for a month without attention. 
 
 The essential features of automatic gages consist of a float free to 
 rise and fall with fluctuations of the water surface, a means of trans- 
 ferring this motion of the float to the record, either directly or through 
 a reducing mechanism, the recording device, and the clock. In most 
 gages used on natural streams the float is connected with a counter- 
 weight by means of a chain or perforated tape which passes over a 
 sprocket wheel connected with gearing in such a way as to reduce the 
 motion caused by the rise and fall of the water surface to a convenient 
 scale. This vertical motion from the float may be transferred either 
 to the pencil or other recording device or to the cylinder carrying the 
 paper. The time interval is given by the clock, which may move 
 either the paper or the pencil, according to the float connection. For 
 all autographic records the motions controlled by the float and the 
 clock are brought at right angles so that there results a continuous 
 curve where one set of ordinates represents gage heights, and the other 
 the time interval. 
 
 The gage may be designed to accommodate any range of stage. 
 Those used by the United States Geological Survey in Hawaii are 
 designed for variations of 5, 10, 20, 30, and 36 feet, but so far those 
 having a 20-foot range have been found to be sufficient for any stage. 
 
 DEFINITION OF TERMS. 
 
 The volume of water flowing in a stream — the "run-off" or "dis- 
 charge" — is expressed in various terms, each of which has become 
 associated more or less definitely with a certain class of work. These 
 terms may be divided into two groups: (1) Those which represent a 
 rate of flow, as "second-feet," "gallons per minute," "gallons per 24 
 hours," "miner's inches," and "run-off in second-feet per square 
 mile," and (2) those which represent the actual quantity of water, as 
 "run-off in depth in inches," "million gallons," and "acre-feet." 
 They may be defined as follows : 
 
 "Second-foot" is an abbreviation for cubic foot per second and is 
 the unit for the rate of discharge of water flowing in a stream 1 square 
 foot in cross section at a rate of 1 foot per second. It is generally 
 adopted as the fundamental unit in the measurement of flowing water 
 and is the "natural" unit, as the foot and the second are the units 
 
DEFINITION OF TERMS. 17 
 
 used in making the physical determinations. Other units may be 
 computed from this by the use of factors given in the table of equiv- 
 alents. 
 
 "Gallons per minute " is generally used in connection with pumping 
 and city water supply, the United States gallon of 231 cubic inches 
 being the unit of quantity and 1 minute the unit of time. 
 
 The "miner's inch" is the unit for the rate of discharge of water 
 that passes through an orifice 1 inch square under a head which varies 
 locally. It is commonly used by miners and irrigators throughout the 
 West, and is defined by statute in each State in which it is used. 
 
 "Second-feet per square mile" is the average number of cubic feet 
 of water flowing per second from each square mile of area drained, on 
 the assumption that the run-off is distributed uniformly both as re- 
 gards time and area. 
 
 "Run-off in inches" is the depth to which the drainage area would 
 be covered if all the water flowing from it in a given period were con- 
 served and uniformly distributed on the surface. It is used for com- 
 paring run-off with rainfall, which is usually expressed in depth in 
 inches. 
 
 An "acre-foot" is equivalent to 43,560 cubic feet and is the quantity 
 required to cover an acre to the depth of 1 foot. The term is com- 
 monly used in connection with storage for irrigation. 
 
 In the Territory of Hawaii a unit commonly used in connection with 
 the measurement of water is the ' ' million gallons. " This is used with 
 two meanings — (1) to indicate a rate of flow and (2) to express an 
 actual quantity of water. In the former sense "million gallons per 24 
 hours" is inferred, 1,000,000 gallons being taken as the unit of quan- 
 tity, and 24 hours as the unit of time. With this meaning the term is 
 generally used in connection with pumping and irrigation. In the 
 latter sense "million gallons" as an absolute quantity is used in the 
 measurement of storage capacities of reservoirs. 
 
 The following convenient approximate relations exist between 
 second-feet, million gallons per 24 hours, and acre-feet: 1 second- 
 foot flowing 24 hours equals about 2 acre-feet; 1,000,000 gallons 
 equals about 3 acre-feet; and 1 second-foot equals approximately 
 two-thirds million gallons per 24 hours. 
 
 "Man's water" is an irrigator's term also in common use in Hawaii. 
 It signifies the amount of water that one irrigator can properly handle 
 in the field. It varies greatly, being dependent upon the condition of 
 the furrows, the age of the crop, and the skill and individuality of the 
 irrigator. Some measurements indicate that it is about 0.75 second- 
 foot. It may be almost any quantity under 1 second-foot, 
 
 14694°— wsp 336—14 2 
 
18 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 CONVENIENT EQUIVALENTS. 
 
 The following is a list of convenient equivalents for use in hydraulic 
 computations: 
 
 Table for converting discharge in second-feet into run-off in acre-feet. 
 
 Discharge 
 (second- 
 
 Run-off (acre-feet). 
 
 
 
 
 
 
 feet). 
 
 1 day. 
 
 28 days. 
 
 29 days. 
 
 30 days. 
 
 31 days. 
 
 1 
 
 1.983 
 
 55.54 
 
 57.52 
 
 59. 50 
 
 61.49 
 
 2 
 
 3.967 
 
 111.1 
 
 115.0 
 
 119.0 
 
 123.0 
 
 3 
 
 5.950 
 
 166.6 
 
 172.6 
 
 178.5 
 
 184.5 
 
 4 
 
 7.934 
 
 222.1 
 
 230. 1 
 
 238. 
 
 246.0 
 
 5 
 
 9.917 
 
 277.7 
 
 287.6 
 
 297.5 
 
 307.4 
 
 6 
 
 11.90 
 
 333.2 
 
 345.1 
 
 357.0 
 
 368.9 
 
 7 
 
 13.88 
 
 388.8 
 
 402.6 
 
 416.5 
 
 430.4 
 
 8 
 
 15.87 
 
 444.3 
 
 460.2 
 
 476.0 
 
 491.9 
 
 9 
 
 17.85 
 
 499.8 
 
 517.7 
 
 535.5 
 
 553.4 
 
 Note.— For partial month multiply values for one day by the number of days. 
 
 1 second-foot equals 7.48 United States gallons per second; equals 448.8 gallons per 
 
 minute; equals 646,272 gallons for one day. 
 
 1 second-foot for one year covers 1 square mile 1.131 feet or 13.572 inches deep. 
 
 1 second-foot for one year equals 31,536,000 cubic feet. 
 
 1 second-foot equals about 1 acre-inch per hour. _ 
 
 1 second-foot for one day covers 1 square mile 0.03719 inch deep. 
 
 1 second-foot for one day equals 1.983 acre-feet. • 
 
 1,000,000 United States gallons per day equals 1.55 second-feet. 
 
 1,000,000 United States gallons equals 3.07 acre-feet. 
 
 1,000,000 cubic feet equals 22.95 acre-feet. 
 
 1 acre-foot equals 325,850 gallons. 
 
 1 inch deep on 1 square mile equals 2,323,200 cubic feet. 
 
 1 inch deep on 1 square mile equals 0.0737 second-foot per year. 
 
 1 foot equals 0.3048 meter. 
 
 1 mile equals 1.60935 kilometers. 
 
 1 mile equals 5,280 feet. 
 
 1 acre equals 0.4047 hectare. 
 
 1 acre equals 43,560 square feet. 
 
 1 acre equals 209 feet square, nearly. 
 
 1 square mile equals 2.59 square kilometers. 
 
 1 cubic foot equals 0.0283 cubic meter. 
 
 1 cubic foot equals 7.48 gallons. 
 
 1 cubic foot of water weighs 62.5 pounds. 
 
 1 cubic meter per minute equals 0.5886 second-foot. 
 
 1 horsepower equals 550 foot-pounds per second. 
 
 1 horsepower equals 76.0 kilogram-meters per second. 
 
 1 horsepower equals 746 watts. 
 
 1 horsepower equals 1 second-foot falling 8.80 feet. 
 
 1J horsepower equals about 1 kilowatt. 
 
 m , , .„ Sec.-ft.Xfallinfeet 
 
 To calculate water power quickly: yr =net horsepower on water 
 
 wheel realizing 80 per cent of theoretical power. 
 
WATER RESOURCES OF HAWAII, 1912. 19 
 
 OFFICE METHODS OF COMPUTING AND STUDYING 
 DISCHARGE AND RUN- OFF. 
 
 At the end of each year the field or base data for current-meter 
 gaging stations, consisting of daily gage heights, discharge measure- 
 ments, and notes from observers ' books are assembled. The measure- 
 ments are plotted on cross-section paper and rating curves are drawn 
 wherever feasible. The rating tables prepared from these curves are 
 then applied to the tables of daily gage heights to obtain the daily 
 discharge, and from these applications the tables of monthly dis- 
 charge and run-off are computed. 
 
 Eating curves are drawn and studied with special reference to the 
 class of channels which they represent. The discharge measure- 
 ments for all classes of stations, when plotted with gage heights in 
 feet as ordinates and discharges in second-feet as abscissas, define 
 rating curves which are generally more or less parabolic in form. 
 For many stations curves of area in square feet and mean velocity 
 in feet per second are also constructed to the same scale of ordinates 
 as the discharge curve. These are used mainly to extend the dis- 
 charge curves beyond the limits of the plotted discharge measure- 
 ments, to check the form of the discharge curve, and to determine 
 and eliminate erroneous measurements. 
 
 For every rating table the following assumptions are made for the 
 period of application of the table: (a) That the discharge is a func- 
 tion of and increases gradually with the stage; (b) that the discharge 
 is the same whenever the stream is at a given stage, and hence such 
 changes in conditions of flow as may have occurred during the period 
 of application are either compensating or negligible, except that the 
 rating, as stated in the footnote of each table, is not applicable for 
 periods during which the channel was obstructed; (c) that the in- 
 creased and decreased discharge due to change of slope on rising and 
 falling stages is either negligible or compensating. 
 
 As already stated, the gaging stations may be divided into several 
 classes, as indicated in the following paragraphs: 
 
 The stations of class 1 represent the most favorable conditions for 
 an accurate rating and are also the most economical to maintain. 
 The bed of the stream is usually composed of rock and is not subject 
 to the deposit of sediment and loose material. This class includes 
 also many stations located in a pool below which is a permanent 
 rocky riffle that controls the flow Hke a weir. Provided the control 
 is sufficiently high and close to the gage to prevent cut and fill at the 
 gaging point from materially affecting the slope of the water surface, 
 the gage height will for all practical purposes be a true index of the 
 discharge. Discharge measurements made at such stations usually 
 
20 WATER RESOURCES OF HAWAII, 1912. 
 
 plot within 2 or 3 per cent of the mean discharge curve, and the 
 rating developed from that curve represents a very high degree of 
 accuracy. 
 
 Class 2 comprises mainly stations on rough, mountainous streams 
 with steep slopes. The beds of such streams are, as a rule, com- 
 paratively permanent during low and medium stages, and when the 
 flow is sufficiently well defined by an adequate number of discharge 
 measurements before and after each flood the stations of this class 
 give nearly as good results as those of class 1. As it is seldom 
 possible to make measurements covering the time of change at 
 flood stage, the assumption is often made that the curves before 
 and after the flood converged to a common point at the highest 
 gage height recorded during the flood. Hence the only uncertain 
 period occurs during the few days of highest gage heights covering 
 the period of actual change in conditions of flow. 
 
 Class 3 includes those stations where the stream bed is of a shifting 
 character, or the controlling section below the gage frequently 
 changes owing to cutting out by the current and the filling in of sand, 
 gravel, and drift. In some cases in Hawaii changes are caused by 
 the growth of vegetation in the stream bed. No absolute rule 
 can be laid down for stations of this class. Each rating curve must 
 be constructed mainly on the basis of the measurements of the cur- 
 rent year, the engineer being guided largely by the history of the 
 station and the following general law: If all measurements ever made 
 at a station of this class are plotted on cross-section paper, they will 
 define a mean curve which may be called a standard curve. It has 
 been found in practice that if after a change caused by high stage a 
 relatively constant condition of flow occurs at medium and low 
 stages, all measurements made after the change will plot on a smooth 
 curve which is practically parallel to the standard curve with respect 
 to ordinates or gage heights. This law of the parallelism of rating 
 curves is the fundamental basis of all ratings and estimates at stations 
 with semipermanent and shifting channels. It is not absolutely cor- 
 rect, but, with few exceptions, answers all the practical requirements 
 of estimates made at low and medium stages after a change at a high 
 stage. This law appears to hold equally true whether the change 
 occurs at the measuring section or at some controlling point below. 
 The change is, of course, fundamentally due to change in the chan- 
 nel caused by cut or fill, or both, at or near the measuring section. 
 For all except small streams the changes in section usually occur at 
 the bottom. The following simple but typical examples illustrate 
 this law: 
 
 (a) If 0.5 foot of planking were to be nailed on the bottom of a well- 
 rated wooden flume of rectangular section, there would result, other 
 conditions of flow being equal, new curves of discharge, area, and 
 
OFFICE METHODS. 21 
 
 velocity, each plotting 0.5 foot above the original curves when 
 referred to the original gage. In other words, this condition would 
 be analogous to a uniform fill or cut in a river channel which either 
 reduces or increases all three values of discharge, area, and velocity 
 for any gage height. In practice, however, such ideal conditions 
 rarely exist. 
 
 (b) In the case of a cut or fill at the measuring section, there is a 
 marked tendency toward decrease or increase, respectively, of the 
 velocity. In other words, the velocity has a compensating effect, and 
 if the compensation is exact at all stages the discharge at a given 
 stage will be the same under both the new and the old conditions. 
 
 (c) In the case of uniform change along the crest of a weir or 
 rocky control, the area curve will remain the same as before the 
 change, and it can be shown that here again the change in velocity 
 curve is such that it will produce a new discharge curve essentially 
 parallel to the original discharge curve with respect to their ordinates. 
 
 Of course, in actual practice such simple changes of section do not 
 occur. The changes are complicated and lack uniformity, a cut at 
 one place being largely offset by a fill at another, and vice versa. 
 If these changes are very radical and involve large percentages of 
 the total area — as, for example, on small streams — there may result 
 a wide departure from the law of parallelism of rating curves. In 
 complicated changes of section the corresponding changes in velocity 
 which tend to produce a new parallel discharge curve may interfere 
 with each other materially, causing eddies, boils, backwater, and 
 radical changes in slope. In such extreme conditions, however, the 
 measuring section would more properly fall under class 4 and would 
 require very frequent measurements of discharge. Special stress is 
 laid on the fact that in the lack of other data to the contrary the 
 utilization of this law will yield the most probable results. 
 
 Slight changes at low or medium stages of an oscillating character 
 are usually averaged by a mean curve drawn among them parallel 
 to the standard curve,, and if the individual measurements do not 
 vary more than 5 per cent from the rating curve the results are 
 considered good for stations of this class. 
 
 Class 4 comprises stations on streams that have soft, muddy, or 
 sandy beds. Good results can be obtained from such sections only 
 by frequent discharge measurements, the frequency ranging from a 
 measurement every two or three weeks to a measurement every day, 
 according to the rate of diurnal change in conditions of flow. These 
 measurements are plotted and a mean or standard curve drawn 
 among them. It is assumed that there is a different rating curve 
 for every day of the year and that this rating is parallel to the stand- 
 ard curve with respect to their ordinates. On the day of a measure- 
 ment the rating curve for that day passes through that measurement. 
 
22 WATER RESOURCES OF HAWAII, 1912. 
 
 For days between successive measurements it is assumed that the 
 rate of change is uniform, and hence the ratings for the intervening 
 days are equally spaced between the ratings passing through the two 
 measurements. This method must be modified or abandoned 
 altogether under special conditions. Personal judgment and a 
 knowledge of the conditions involved can alone dictate the course 
 to pursue in such cases. 
 
 The computations have as a rule been carried to three significant 
 figures. Computation machines and the 20-inch slide rule have 
 been generally used. All computations are carefully checked. 
 
 After the computations have been completed they are entered in 
 tables and carefully studied and intercompared to eliminate or 
 account for all gross errors so far as possible. Missing periods are 
 filled in, so far as feasible, by means of comparison with records for 
 adjacent streams. The attempt is made to complete years or periods 
 of discharge, thus eliminating fragmentary and disjointed records. 
 Full notes accompanying such estimates follow the daily and monthly 
 discharge tables. 
 
 EXPLANATION OF TABLES. 
 
 For each regular current-meter gaging station are given in general 
 the following data: Description of station, list of discharge measure- 
 ments, table of daily gage height, table of daily discharge, table of 
 monthly and yearly discharge, and run-off in acre-feet. For stations 
 located at weirs or dams the gage-height table is omitted. 
 
 All rates of flow are expressed as second-feet, because distances and 
 depths are measured in feet, and velocities in feet per second. The 
 flow is thus obtained in cubic feet per second, or more briefly in 
 " second-feet." The term " million gallons per 24 hours" is not used 
 except in a few tables where data have been furnished in these 
 units by private corporations. "Million gallons per 24 hours" is 
 not a primary but a derived unit. To convert second-feet into 
 million gallons per 24 hours multiply by 0.646. 
 
 In addition to statements regarding the location and installation 
 of current-meter stations, the descriptions give information in regard 
 to any conditions which may affect the constancy of the relation of 
 gage height to discharge, covering such points as shifting channels and 
 backwater; also information regarding diversions which decrease the 
 total flow at the measuring section. Statements are also made regard- 
 ing the accuracy and reliability of the data. 
 
 The discharge-measurement table gives the results of the discharge 
 measurements made during the year, including the date, name of 
 hydrographer, gage height, and discharge in second-feet. 
 
 The table of daily gage height records the daily fluctuations of the 
 surface of the river as found from the mean of the gage readings taken 
 
EXPLANATION OF TABLES. 23 
 
 each day. At most stations the gage is read in the morning and in 
 the evening unless a continuous record is obtained by means of an 
 automatic instrument. The gage height given in the table represents 
 the elevation of the surface of the water above the zero of the gage. 
 All gage heights affected by shifting conditions of flow or by back- 
 water from obstructions are published as recorded, with suitable foot- 
 notes. The rating table is not applicable for such periods unless the 
 proper corrections to the gage heights are known and applied. Atten- 
 tion is called to the fact that the zero of the gage is placed at an arbi- 
 trary datum and has no relation to zero flow or the bottom of the river. 
 In general the zero is located somewhat below the lowest known 
 flow, so that negative readings shall not occur. 
 
 The discharge measurements and gage heights are the base data 
 from which rating tables, daily discharge tables, and monthly dis- 
 charge tables are computed. 
 
 The rating table gives, either directly or by interpolation, the 
 discharge in second-feet corresponding to every stage of the river 
 recorded during the period for which it is applicable. It is not pub- 
 lished in this report, but can be determined from the daily gage 
 heights and daily discharges, for the purpose of verifying the pub- 
 lished results as follows: 
 
 First plot the discharge measurements on cross-section paper with 
 gage height in feet as ordinates and discharge in second-feet as 
 abscissas. Then tabulate a number of gage heights taken from the 
 daily gage-height table for the complete range of stage given and the 
 corresponding discharges for the days selected from the daily discharge 
 table and plot the values on cross-section paper. The last points 
 plotted will define the rating curve used and will lie among the plotted 
 discharge measurements. After drawing the rating curve, a table 
 can be prepared by scaling off the discharge in second-feet for each 
 tenth foot of gage height. These values should be so adjusted that 
 the first differences shall always be increasing or constant, except for 
 known conditions of backwater. 
 
 The table of daily discharge gives the discharge in second-feet cor- 
 responding to the observed gage height as determined from the rating 
 table, the number of significant figures used varying with the size 
 of the discharge. For quantities below 0.5 second-foot the daily 
 discharge is carried to hundredths; from 0.5 to 9.9 second-feet, to 
 tenths only; from 10 to 99 second-feet all decimals are omitted, and 
 above 100 second-feet only three significant figures are used. 
 
 In the table of monthly discharge the column headed "Maximum" 
 gives the mean flow, as determined from the rating table, for the day 
 when the mean gage height was highest. As the gage height is the 
 mean for the day, it does not indicate correctly the stage when the 
 water surface was at crest height, and the corresponding discharge 
 
24 WATER RESOURCES OF HAWAII, 1912. 
 
 was consequently larger than given in the maximum column. Like- 
 wise in the column of " Minimum" the quantity given is the mean 
 flow for the day when the mean gage height was lowest. The column 
 headed "Mean" is the average flow in cubic feet for each second dur- 
 ing the month. On this the computations for the remaining columns, 
 which are defined on page 17, are based. 
 
 ACCURACY AND RELIABILITY OF FIELD DATA AND 
 COMPARATIVE RESULTS. 
 
 Practically all discharge measurements made under fair conditions 
 are well within 5 per cent of the true discharge at the time of obser- 
 vation. Inasmuch as the errors of meter measurements are largely 
 compensating, the mean rating curve, when well defined, is much 
 more accurate than the individual measurements. Numerous tests 
 and experiments have been made to test the accuracy of current- 
 meter work. These show that it compares very favorably with the 
 results from standard weirs, and, owing to simplicity of methods, 
 usually gives results that are much more reliable than those from 
 the ordinary weir used under conditions widely different from those 
 under which the weir formula was derived. 
 
 The work is, of course, dependent on the reliability of the observers. 
 With relatively few exceptions, the observers perform their work 
 honestly. Care is taken, however, to watch them closely and to 
 inquire into any discrepancies. It is, of course*, obvious that one 
 gage reading a day does not always give the mean height for that 
 day. As an almost invariable rule, however, errors from this source 
 are compensating and virtually negligible in a period of one month, 
 although a single day's reading may, when taken by itself, be con- 
 siderably in error. 
 
 In order to give engineers and others information regarding the 
 probable accuracy of the computed results, footnotes are added to the 
 daily discharge tables, stating the probable accuracy of the rating 
 tables used, and an accuracy column is inserted in the monthly dis- 
 charge table. For the rating tables "well defined" indicates in gen- 
 eral that the rating is probably accurate within 5 per cent; " fairly 
 well defined," within 10 per cent; "poorly defined" or "approxi- 
 mate," within 15 to 25 per cent. These notes are very general and 
 are based on the plotting of the individual measurements with refer- 
 ence to the mean rating curve. 
 
 DIVISION OF WORK. 
 
 On account of the isolation of the different islands of the Territory 
 an engineer or employee was assigned to take charge of the field work 
 on each one of the four larger islands with temporary headquarters on 
 that island. 
 
GAGING STATIONS. 
 
 Persons in charge of field work. 
 
 25 
 
 Island. 
 
 In charge. 
 
 Temporary headquarters. 
 
 Oahu 
 
 W. F. Martin, district engineer (Jan. 1 to Mar. 27) 
 
 C. H. Pierce, acting district engineer (Mar. 28 to 
 
 Aug. 13). 
 G. K. Larrison, district engineer (Aug. 14 to 
 
 Dec. 31). 
 W. V. Hardy, field assistant 
 
 Honolulu (permanent). 
 
 
 Waimea. 
 
 Maui 
 
 J. B. Stewart, clerk acting field assistant (Jan. 1 to 
 
 Nov. 30). 
 C. T. Bailey, assistant engineer (Dec. 1-31) 
 
 Wailuku. 
 
 Hawaii 
 
 C. H. Pierce, assistant engineer (Jan. 1 to Mar. 27) 
 
 E. 0. Christiansen, assistant engineer (July 10 to 
 Dec. 31). 
 
 Hilo. 
 
 Office Engineer J. C. Dort, junior engineer, at Honolulu, October 
 29 to December 31, assisted on Oahu field work. 
 
 Ratings, applications, computations, etc., were made by G. K. 
 Larrison, J. C. Dort, E. O. Christiansen, C. T. Bailey, W. V. Hardy, 
 E. E. Goo, G. R. White, S. W. Dort, R. M. S. Goo, H. L. Book, H. H. 
 Kennedy, H. M. Kennedy, and E. J. Howard. The report was edited 
 by Mrs. B. D. Wood. 
 
 GAGING STATIONS MAINTAINED IN HAWAII. 
 
 The following list comprises the gaging stations maintained in 
 Hawaii by the United States Geological Survey and cooperative 
 parties. The stations are arranged by stream basins and appear in 
 systematic order for the several islands, tributaries of main streams 
 being indicated by indention. The date refers to the years or parts 
 of years for which records are available. A dash following the date 
 indicates that the station was being maintained December 31, 1912. 
 
 KAUAI ISLAND. 
 
 Waimea River near Waimea, 1910- 
 Poomau River: 
 
 Kawaikoi Stream near Waimea, 1909- 
 
 Waiakoali Stream near Waimea, 1909- 
 Mohihi Stream near Waimea, 1909- 
 Waialae Stream near Waimea, 1910- 
 Kekaha ditch at camp No. 1, near Waimea, 1910- 
 Kekaha ditch at flume No. 2, near Waimea, 1910- 
 Kekaha ditch at siphon, near Waimea, 1910- 
 Kekaha ditch at tunnel No. 12 weir, near Waimea, 1910- 
 Waimea ditch near Waimea, 1911- 
 Kamenehune ditch near Waimea, 1911- 
 Makaweli River near Waimea, 1911- 
 Mokuone River: 
 
 Halekua Stream near Waimea, 1912- 
 Olokele River: 
 
 Olokele ditch at tunnel No. 12, near Makaweli, 1910- 
 Olokele ditch near Waimea, 1912- 
 Poowaiomahaihai ditch near Waimea, 1911- 
 
26 WATER RESOURCES OF HAWAII, 1912. 
 
 Hanapepe River at Hanapepe Falls, near Eleele, 1911- 
 Hanapepe River at Kaula, near Eleele, 1910- 
 
 Hanapepe ditch at Hanapepe Falls, near Eleele, 1911- 
 Hanapepe ditch at Koula, near Eleele, 1910- 
 Hanapepe ditch at weir, near Hanapepe, 1910- 
 
 East Branch of Hanapepe River at Hanapepe Falls, near Eleele, 1911- 
 Hiloa ditch at Hanapepe Falls, near Eleele, 1911- 
 Huleia River, near Lihue, 1912- 
 Hanamaula River at Kapaia near Lihue, 1911- 
 Wailua River: 
 
 South Fork of Wailua River at siphon, near Lihue, 1910-11. 
 South Fork of Wailua River above Waiehu Falls, near Lihue, 1911- 
 Lihue ditch near Lihue, 1910- 
 Hanamaulu ditch near Lihue, 1910- 
 North Fork of Wailua River near Lihue, 1910- 
 
 East Branch of North Fork of Wailua River near Lihue, 1912- 
 Uhau Iole Stream at 750-foot elevation, near Lihue, 1912- 
 Keahua Stream at 750-foot elevation, near Lihue, 1912- 
 Kawi Stream at 750-foot elevation, near Lihue, 1912- 
 Kanaha ditch near Lihue, 1910- 
 Konohiki Stream at Makakualele (mauka) weir, near Kapaa, 1911- 
 Konohiki Stream at Makakualele (makai) weir, near Kapaa, 1912- 
 Kaehulua Stream at Kainahola (mule stable) weir, near Kapaa, 1911- 
 North Fork of Kaehulua Stream at Kuhinoa weir, near Kapaa, 1911- 
 South Fork of Kaehulua Stream at Wainamuamu weir, near Kapaa, 1911- 
 Kapaa River, at Kapahi, near Kapaa, 1910- 
 Akulikuli Springs near Kapaa, 1909- 
 Kapahi ditch at Kapahi, near Kapaa, 1909- 
 
 Tunnel ditch at Kapahi, near Kapaa, 1909-11. 
 Kapaa ditch at Kapahi, near Kapaa, 1909-11. 
 Pipe ditch at Kapahi, near Kapaa, 1909-11. 
 Kealia Stream: 
 
 Kaneha ditch at weir near Kealia, 1909- 
 Anahola River at 1,140-foot elevation, near Kealia, 1912- 
 Anahola River above dam at Kiokala, near Kealia, 1910- 
 Anahola River at Kiokala dam, near Kealia, 1910-11. 
 Anahola ditch at Kiokala, near Kealia, 1909- 
 Anahola ditch at makai weir, near Kealia, 1909-11. 
 Kalihiwai River near Kilauea, 1912- 
 Hanalei River near Hanalei, 1911- 
 China ditch near Hanalei, 1911- 
 Kuna ditch near Hanalei, 1912- 
 Lumahai River near Wainiha, 1912- 
 Wainiha River near Wainiha, 1911- 
 
 Wainiha canal at intake, near Wainiha, 1910- 
 Wainiha canal at tunnel No. 18, near Wainiha, 1911. 
 Wainiha canal at tailrace, near Wainiha, 1911. 
 
 OAHTT ISLAND. 
 
 Palolo Stream: 
 
 Waiomao Stream at 900-foot evelation, near Honolulu, 1911- 
 Waiomao Stream above Pukele Stream, near Honolulu, 1911- 
 Pukele Stream at Mahoe Springs, near Honolulu, 1912- 
 
 Manoa Stream at upper end of valley, near Honolulu, 1910- 
 
GAGING STATIONS. 27 
 
 Manoa Stream at College of Hawaii, near Honolulu, 1909-10; 1912- 
 
 Manoa Stream at Waialae Road, near Honolulu, 1910-12. 
 
 Pauoa Stream below Kahuawai Springs, near Honolulu, 1911- 
 
 Kahuawai Spring, near Honolulu, 1912- 
 
 Nuuanu Stream at Kuakini Street, Honolulu, 1911-12. 
 
 Lulumaho ditch in Nuuanu Valley, near Honolulu, 1911- 
 Luakaha weir in Nuuanu Valley, near Honolulu, 1910- 
 Kaukonahua Stream: 
 
 South Fork of Kaukonahua Stream, near Wahiawa, 1911. 
 North Fork of Kaukonahua Stream, near Wahiawa, 1911. 
 Wahiawa Reservoir ditch, near Wahiawa, 1910-11. 
 Kaipapau Stream, near Hauula, 1906-7. 
 Kaluanui Stream near Hauula, 1906-7. 
 Punaluu Stream, near Hauula, 1906-7. 
 
 Waikane Stream at lower Waikane Valley, near Waikane, 1912. 
 Waiahole Stream at Manianiaula, near Waikane, 1911- 
 Waiahole Stream at Waiahole, near Waikane, 1911- 
 Waihi Stream, near Waikane, 1911. 
 Halona Stream, near Waikane, 1911. 
 Waianu Stream, near Waikane, 1911. 
 Kahanaiki Stream near Waimanalo, 1912- 
 Kailua Stream near Waimanalo, 1912- 
 Pohakea Stream near Waimanalo, 1912- 
 Kamakalepo Stream near Waimanalo, 1912- 
 Kaimi Stream near Waimanalo, 1912- 
 Makawao Stream near Waimanalo, 1912- 
 Makawao ditch near Waimanalo, 1912- 
 Wong Leong ditch near Waimanalo, 1912- 
 Waimanalo ditch below reservoir, near Waimanalo, 1912- 
 Pump ditch near Waimanalo, 1912- 
 
 MATJI ISLAND. 
 West Maui. 
 
 Kahakuloa Stream at Kahakuloa, near Waihee, 1912- 
 Waihee Stream near Waihee, 1910- 
 
 Waihee canal near Waihee, 1910- 
 
 Waihee canal at weir near Wailuku, 1911- 
 
 Spreckels ditch near Waihee, 1910- 
 
 Spreckels ditch at Waiale weir, near Wailuku, 1910-11. 
 Waiehu Stream: 
 
 North Waiehu Stream near Wailuku, 1911- 
 
 North Waiehu ditch near Wailuku, 1910-11. 
 
 South Waiehu Stream near Wailuku, 1910- 
 Iao Stream near Wailuku, 1910- 
 
 Maniania ditch near Wailuku, 1910- 
 Waikapu Stream near Waikapu, 1910- 
 
 South Side Waikapu ditch near Waikapu, 1910- 
 
 Palolo (Everett) ditch near Waikapu, 1910- . 
 Ukumehame Stream near Olowalu, 1911- 
 Olowalu Stream: 
 
 Olowalu ditch No. 1 near Olowalu, 1911- 
 Launiupoko Stream near Lahaina, 1911- 
 
28 WATER RESOURCES OF HAWAII, 1912. 
 
 Kauaula Stream near Lahaina, 1911- 
 
 Kauaula ditch near Lahaina, 1911- 
 
 Kauaula weir No. 1 near Lahaina, 1901. 
 
 Kauaula weir No. 2 near Lahaina, 1901. 
 
 Kauaula weir No. 3 near Lahaina, 1901. 
 Lahainaluna Stream near Lahaina, 1911- 
 
 Lahainaluna weir No. 1 near Lahaina, 1901. 
 
 Lahainaluna weir No. 2 near Lahaina, 1901. 
 Kahoma Stream near Lahaina, 1911- 
 
 Kahoma Stream at weir No. 1, near Lahaina, 1901. 
 
 Kahoma Stream at weir No. 2, near Lahaina, 1901. 
 
 Kahoma ditch at weir near Lahaina, 1911-* 
 Honokawai Stream near Lahaina, 1911. 
 
 Honokawai ditch near Lahaina, 1912- 
 
 Honokawai weir No. 1 near Lahaina, 1901. 
 Honolua Stream near Honokahau, 1911. 
 
 Honolua ditch near Honokahau, 1911- 
 Honokahau Stream near Honokahau, 1911. 
 
 Honokahau ditch at intake, near Honokahau, 1907- 
 
 Honokahau ditch above Honolua Stream, near Honokahau, 1910-11. 
 
 IJonokahau ditch at Honokawai weir, near Lahaina, 1910- 
 
 East Maui. 
 Koolau ditch region: 
 
 Koolau ditch near Keanae, 1910- 
 
 Koolau ditch at Alo division weir, near Huelo, 1908-1911. 
 Spreckels ditch region: 
 
 Haipuaena Stream near Huelo, 1910- 
 
 Puohakamoa Stream near Huelo, 1910- 
 
 Alo Stream near Huelo, 1910- 
 
 Waikamoi Stream near Huelo, 1910- 
 
 Oopuola Stream near Huelo, 1910- 
 
 Spreckels ditch at station No. 1, near Huelo, 1910- 
 
 Spreckels ditch at atstion No. 2, near Huelo, 1911- 
 
 Spreckels ditch at station No. 3, near Huelo, 1910- 
 
 Spreckels ditch at station No. 4, near Huelo, 1910- 
 
 Spreckels ditch at station No. 5, near Huelo, 1911- 
 
 Spreckels ditch at station No. 6, near Huelo, 1911- 
 
 Spreckels ditch at station No. 7, near Huelo, 1911- 
 
 Spreckels ditch at station No. 8, near Huelo, 191.1- 
 Center ditch region: 
 
 Center ditch near Huelo, 1910- 
 Hamakua ditch region: 
 
 Nailiilihaele Stream near Huelo, 1910- 
 
 Kailua Stream near Huelo, 1910- 
 
 Oanui Stream near Huelo, 1910-11. 
 
 Hoolawaliilii Stream near Huelo, 1910- 
 
 Hoolawanui Stream near Huelo, 1910- 
 
 Honopou Stream near Huelo, 1910- 
 
 Halehaku Stream at dam, near Huelo, 1910-11. 
 Halehaku Stream weir near Huelo, 1910- 
 
 Opana Stream near Huelo, 1910- 
 Opana ditch near Huelo, 1910- 
 
 New Hamakua ditch at Nailiilihaele weir, near Hueio, 1910- 
 
GEOGRAPHY OF THE HAWAIIAN ISLANDS. 29 
 
 Hamakua ditch region — Continued. 
 
 New Hamakua ditch at Halehaku weir, near Huelo, 1910- 
 New Hamakua ditch at station No. 1, near Huelo, 1912- 
 New Hamakua ditch at station No. 2, near Huelo, 1912- 
 New Hamakua ditch at station No. 3, near Huelo, 1912- 
 New Hamakua ditch at station No. 4, near Huelo, 1912- 
 New Hamakua ditch at station No. 5, near Huelo, 1912- 
 Old Hamakua ditch at Opana weir, near Huelo, 1910- 
 Kaluanui ditch at Puuomalei near Hamakuapoko, 1910- 
 Lowrie ditch at Opana weir, near Huelo, 1910- 
 Haiku ditch at Peahi weir, near Huelo, 1910- 
 
 „., HAWAII ISLAND. 
 
 Hilo group: 
 
 Wailuku River near Hilo, 1911- 
 Honolii River at Kaiwiki, near Hilo, 1911- 
 Honolii ditch at Kaiwiki, near Hilo, 1911. 
 Kawainui River at Kawainui, near Pepeekeo, 1911- 
 4 stations at Piihonua, near Hilo, 1912. 
 81 stations at 2,700 feet level, in forest back of Hilo, 1911- 
 Hamakua group: 
 
 Kawainui Branch of Waipio River, near Waipio, 1911- 
 Waipio River below Koiawe Stream, near Waipio, 1911- 
 Waipio River below Waima Stream, near Waipio, 1911- 
 Waipio River at 360 feet elevation, near Waipio, 1901-2. 
 New Hamakua ditch at Waima Stream, near Waipio, 1912- 
 New Hamakua ditch at main weir near Kukiuhaele, 1911- 
 Kawainui Stream at 2,120 feet elevation, near Waipio, 1901-2. 
 Kawainui Stream at 1,435 feet elevation, near Waipio, 1901-2. 
 Kawainui Stream at 775 feet elevation, near Waipio, 1901-2. 
 
 Branch No. 3 of Kawainui Stream at 1,700 feet elevation, near Waipio, 1901-2. 
 
 Branch No. 2 of Kawainui Stream at 1,405 feet elevation, near Waipio, 1901-2. 
 
 Branch No. 1 of Kawainui Stream at 1,380 feet elevation, near Waipio, 1901-2. 
 Alakahi Stream at 1,200 feet elevation, near Waipio, 1901-2. 
 Alakahi Stream at 730 feet elevation, near Waipio, 1901-2. 
 Koiawe Stream at 1,120 feet elevation, near Waipio, 1901-2. 
 Koiawe Stream at 610 feet elevation, near Waipio, 1901-2. 
 Waima Stream at 790 feet elevation, near Waipio, 1901-2. 
 Waima Stream at 385 feet elevation, near Waipio, 1901-2. j 
 
 Kohala group: 
 
 Honokane Stream: ■' '_ 
 
 East Branch of Honokane Stream at 1,300 feet elevation, near Honokane, 1901. 
 
 East Branch of Honokane Stream at 770 feet elevation, near Honokane, 1901. 
 
 West Branch of Honokane Stream at 1,370 feet elevation, near Honokane, 1901. 
 
 West Branch of Honokane Stream at 775 feet elevation, near Honokane, 1901. 
 
 Kohala ditch near Kohala, 1907- 
 
 GEOGRAPHY OF THE HAWAIIAN ISLANDS. 1 
 
 The Hawaiian Islands are situated in the north Pacific Ocean due 
 west of the central part of Mexico and about 2,100 miles southwest 
 of San Francisco j from which Honolulu may be- reached in about 6 
 days. Dutton 2 has described the group as consisting of 12 islands — 
 
 Adapted from Dutton, C. E., Hawaiian volcanoes: V. S. GeoL Survey Tourth Ann. Rept., pp. 
 81-212, 1884. 
 8 Op. cit., p. 81. 
 
30 WATER RESOURCES OF HAWAII, 1912. 
 
 eight inhabited and four mere barren rocks — lying between meridians 
 154° 30' and 160° 30' west of Greenwich and between parallels 18° 40' 
 and 22° 15' north; but northwest of this principal part of the group 
 are a dozen smaller low islands and reefs which are shown on the 
 charts and over which the Territorial government has authority. 
 The westernmost of these, which are known as the Ocean Islands, lie 
 about in longitude 178° 30' west — very nearly the antipodes of 
 Greenwich — and 29° north. The archipelago, therefore, extends 
 over nearly 25° of longitude, or about 1,800 miles/ its form being 
 rudely crescentic and its general trend northwest-southeast. Hitch- 
 cock * gives the following list of the islands in order from west to east 
 with areas and extreme altitudes. 
 
 Islands of the Hawaiian Archipelago. 
 
 Low islands and reefs. 2 
 
 Altitude 
 (feet). 
 
 Ocean Islands — 10 
 
 Midway Islands 57 
 
 Gambia Shoal. 
 
 Pearl and Hermes reefs. 
 
 Lisiansky Island ... 50 
 
 Laysan Island 25 
 
 Maro Reef. 
 Dowsett's Reef. 
 
 The lowest of the high islands. 
 
 Gardiner Island 170 
 
 French Frigate Shoal 120 
 
 Necker Island 300 
 
 Frost Shoal. 
 
 Nihoa or Bird Island 903 
 
 High inhabited islands, with area and highest point. 
 
 Niihau (97 square miles) 1, 300 
 
 Cinder cones adjoining, named Kaula and Lehua. 
 
 Kauai (547 square miles; highest point, Waialeale) 3 5, 170 
 
 Oahu (598 square miles; highest point, Kaala) 4, 030 
 
 Molokai (261 square miles; highest point, Komokoa) 4, 958 
 
 Lanai (139 square miles) 3, 400 
 
 Maui (728 square miles; highest point, Haleakala) 3 10, 350 
 
 Kahoolawe (69 square miles; highest point, Moaulu Hill) 1, 472 
 
 Hawaii (4,015 square miles; highest point, Mauna Kea) 13, 825 
 
 Of these, Hawaii, Maui, Oahu, Kauai, and Molokai are by far the 
 most important in area and in number of inhabitants. 
 
 All these islands are volcanic. No rocks other than volcanic are 
 found on any of them except a few remnants of raised sea beaches 
 
 1 Hitchcock, C. H., Hawaii and its volcanoes, p. 1, Honolulu, 1909. . . 
 
 2 May be swept by storm waves. 
 
 3 Hitchcock's figures, 5,250 and 10,032, revised from more recent maps. 
 
GEOGRAPHY OF THE HAWAIIAN ISLANDS. 31 
 
 composed of consolidated coral sands. All the larger ones are very- 
 mountainous and lofty. The culminating points of the island of 
 Hawaii are Mauna Kea, 13,825 feet, and Mauna Loa, 13,675 feet 
 above sea level. The summit of Haleakala, on East Maui, is 10,350 
 feet, and the mountains of West Maui attain 5,900 feet. Oahu has 
 a peak on the eastern side of the island 3,100 feet high, and another on 
 the western side 4,030 feet high. The loftiest point of Kauai is about 
 5,170 feet above the sea. Deep-sea soundings in the vicinity have 
 disclosed the fact that these volcanic piles are only the summits of 
 gigantic mountain masses rising abruptly from the bottom of the 
 Pacific, which for many hundreds of miles around them is only 
 moderately diversified. The slopes of Mauna Loa east, west, and 
 south descend beneath the surface of the ocean with a gradient fully 
 equal to if not greater than the visible slope of its flanks. The sub- 
 marine slopes of all the other islands in directions perpendicular to- 
 the principal axis of the group are equally great and possibly some-. 
 what greater. The depths attained by these continuous slopes 
 within 30 to 50 miles of the shores vary from 2,400 to 3,100 fathoms, 
 or 14,000 to 19,000 feet. Mauna Loa and Mauna Kea, referred to 
 their true bases at the bottom of the Pacific, are therefore mountains 
 not far from 30,000 feet in height. In general the island group con- 
 sists of the summits of a gigantic submarine mountain chain, pro- 
 jecting its loftier peaks and domes above the water. 
 
 On the island of Hawaii the volcanic forces are still in operation. 
 On the eastern portion of Maui they have rested at a very recent 
 epoch. In the other islands they have long been extinct, and the 
 piles they built up have been greatly ravaged by erosion. On 
 Hawaii the large volcano Hualalai, just west of Mauna Loa, gave 
 forth three eruptions in the early part of the present century, but 
 has been dormant since 1811. Mauna Kea gives evidence of having 
 reposed for many centuries — or throughout a period that, histo- 
 rically considered, may have lasted some thousands of years; though, 
 if we value time by the geologic scale, the date of its last activity 
 would be regarded as very recent. Haleakala, on Maui, gives 
 indications of considerably greater recency in its last eruptions 
 than Mauna Kea, but the natives have no traditions of any out- 
 break from it, and we may infer that it has been quiet for several 
 hundred years. With regard to the other volcanic centers, we have 
 no means of judging the antiquity of their final action except the prog- 
 ress made by erosion in demolishing them, and this progress is, in every 
 instance, considerable. It is most conspicuous on Kauai and Oahu, 
 and almost equally so on Molokai and West Maui. From this it is 
 inferred that the western islands of the group have longest enjoyed 
 immunity from eruption. Kauai, especially, is frequently spoken of 
 
32 WATER RESOURCES OF HAWAII, 1912. 
 
 as the oldest island of the group, and, judging from the amount of 
 destruction wrought upon it by the eroding forces, the statement 
 is in some measure apparently justified, but only to this extent, the 
 period which has elapsed since the cessation of eruption has probably 
 been longer there than in the other islands. It does not follow, 
 however, that the eruptions began there any earlier than on Hawaii. 
 
 The one continuously active volcanic vent of the islands is Kilauea, 
 far down on the eastern flank of Mauna Loa — "the great mountain.' ' 
 No other volcano in the world approaches Mauna Loa in the vastness 
 of its mass or in the magnitude of its eruptive activity. There are 
 many volcanic peaks higher in the air, but most of them are planted 
 upon elevated platforms, where they appear as mere cones of greater 
 or less size. We do not know at what level the base of Mauna Loa is 
 situated. We only know that it is below sea level, and probably far 
 below it. But on the other hand, it may not be so low as the adjoin- 
 ing depths of the Pacific. 
 
 Mauna Kea — "the white mountain" — is also a colossus among 
 volcanoes. The summit of Mauna Kea is a trifle higher than that 
 of Mauna Loa, but its slopes are steeper and its base is therefore 
 much smaller. The magnitude of Mauna Loa is due chiefly to the 
 great area of its base, which is nearly elliptical in shape, with a major 
 diameter of 74 miles and a minor of 53 miles, measured at sea level. 
 
 In the aggregate of its eruptions Mauna Loa is also unrivalled. 
 Some of the volcanoes of Iceland have been known to disgorge at a 
 single outbreak masses of lava fully equal to them. But in that 
 island such intravasations are infrequent, and a century has elapsed 
 since any of such magnitude have been emitted, though several of 
 minor extent have been outpoured. The eruptions of Mauna Loa 
 are all of great volume, and occur irregularly, with an average in- 
 terval of about eight years. Taking the total quantity of material 
 disgorged during the past century, no other volcano is at all com- 
 parable to it. 
 
 Mauna Loa and Kilauea are in many important respects abnormal 
 volcanoes. Most notable is the singularly quiet character of their 
 eruptions. Earely are these portentous events attended by any of 
 that extremely explosive action which is characteristic of nearly all 
 other volcanoes. Only once or twice within the historic period have 
 they been accompanied by earthquakes or subterranean rumblings. 
 The vast jets of steam blown miles high, hurling stones, cinders, and 
 lapilli far and wide, filling the heavens with vapor and smoke, and 
 hailing down ashes and fragments over the surrounding regions, have 
 never been observed here. Some action of this sort is indeed repre- 
 sented, but only in a feeble way. The lava wells forth like water 
 from a hot, bubbling spring, but so mild are the explosive forces that 
 
GEOGRAPHY OF THE HAWAIIAN ISLANDS. 33 
 
 the observer may stand to the windward of the grandest eruption, 
 and so near the source that the heat will make the face tingle, yet 
 without danger. Ordinarily the outbreak takes place without warn- 
 ing and without the knowledge of the inhabitants, who first become 
 aware of it at nightfall, when the sky is aglow and the fiery fountains 
 are seen playing. As the news spreads, hundreds of people flock to 
 it to witness the sublime spectacle and display almost as much eager- 
 ness to approach the scene of an eruption as the people of other 
 countries show to get away from one. 
 
 The great magnitude of the individual eruptions of Mauna Loa 
 and Kilauea, and the absence of fragmental products, supply an 
 explanation of their abnormally flat profiles. Fragmental ejecta 
 pile up around the vents from which they are projected; but great 
 streams of fluent lava run far away from their sources. The large 
 pits or so-called craters which are sunken in the summits Kilauea and 
 Mauna Loa, and the still more remarkable one on Haleakala, are not 
 entirely unparalleled, though their analogues in other regions are very 
 uncommon. 
 
 In all those portions of the islands where quiet has long prevailed 
 the scenery has habitudes of extreme boldness and animation. Cliffs, 
 crags, and canyons are carved in the mountains with as much sharp- 
 ness and spirited detail as in the plateau country of North America. 
 In West Maui and Kauai may be found walled valleys and amphi- 
 theaters which almost rival Yosemite. The windward fronts of 
 Oahu and Molokai stand 3,000 to 4,000 feet high, and are carved in 
 a manner which is rarely surpassed by the finest sculpture in the 
 valley of the Colorado. On the weather sides of Hawaii and Maui 
 the gentle slopes of the mountains terminate on the ocean in walls 
 a few hundred feet high, and the platforms are gashed with canyon 
 valleys that are marvels of beauty. 
 
 The climate of the islands presents considerations of very great 
 interest. It is difficult to find anywhere any greater constancy of 
 atmospheric conditions than those prevailing over the ocean within 
 the heart of the trade- wind belt. The temperature varies but little 
 from winter to summer, and the general drift of the atmosphere is 
 rarely interfered with by storms and cyclones. And yet upon the 
 islands themselves it may be said that there are almost as many 
 climates as there are square leagues. And the differences of climatal 
 condition exhibited by localities separated only half a dozen miles 
 are extreme. As a general rule the windward sides are excessively 
 rainy, the precipitation may exceed 400 inches in a year. The lee- 
 ward sides are generally arid, but to this there are some striking 
 exceptions, especially under the lee of Mauna Loa, where the rainfall 
 is almost as great as on the weather side. 
 14694°— wsp 336—14 3 
 
34 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 STATION RECORDS. 
 
 ISLAND OF KAUAI. 
 
 WAIMEA RIVER BASIN. 
 WAIMEA RIVER NEAR WAIMEA, KAUAI. 
 
 Location. — About 2 miles north of Waimea and 250 feet above ford. 
 Records available. — July 9, 1910, to December 31, 1912. 
 Gage. — Vertical and inclined staff read once daily; datum unchanged. 
 Channel. — Bottom covered with sand and bowlders; seems fairly permanent. 
 Discharge measurements. — Made from a wire suspension bridge. 
 Accuracy. — Records fair. 
 
 Discharge measurements of Waimea River near Waimea, Kauai, in 1912. 
 [Hydrographer, W. V. Hardy.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 
 Feet. 
 5.55 
 3.77 
 5.07 
 3.67 
 4.80 
 6.25 
 
 Sec.-ft. 
 178 
 5.45 
 87.2 
 .78 
 53.7 
 441 
 
 Dec. 1 
 
 Feet. 
 6.05 
 5.77 
 7.60 
 7.10 
 8.10 
 4.18 
 
 Sec.-ft. 
 350 
 
 July 13 
 
 Do 
 
 232 
 
 July 14 
 
 Dec. 2. 
 
 1,320 
 927 
 
 Sept. 30 
 
 Do 
 
 Nov. 30 
 
 Do 
 
 1,760 
 15.6 
 
 Dec. 1 
 
 Dec. 10 
 
 
 
 
 Daily gage height, in feet, of Waimea River near Waimea. Kauai, for 1912. 
 [T. Mokuahakea, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May 
 
 June 
 
 July 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 5.03 
 
 3.90 
 
 6.01 
 
 5.30 
 
 3.64 
 
 3.80 
 
 3.70 
 
 3.80 
 
 4.00 
 
 3.80 
 
 4.00 
 
 4.34 
 
 3.90 
 
 6.08 
 
 5.07 
 
 3.75 
 
 3.70 
 
 3.70 
 
 3.80 
 
 5.30 
 
 3.80 
 
 3.97 
 
 4.01 
 
 4.01 
 
 6.52 
 
 4.81 
 
 3.80 
 
 3.65 
 
 3.70 
 
 3.69 
 
 4.20 
 
 3.80 
 
 3.90 
 
 3.85 
 
 4.75 
 
 5.25 
 
 4.01 
 
 3.80 
 
 3.70 
 
 3.70 
 
 3.60 
 
 3.90 
 
 3.79 
 
 3.83 
 
 3.82 
 
 4.01 
 
 4.24 
 
 6.03 
 
 4.00 
 
 3.70 
 
 3.70 
 
 3.60 
 
 3.80 
 
 3.75 
 
 3.81 
 
 3.80 
 
 3.93 
 
 5.70 
 
 6.00 
 
 3.80 
 
 3.65 
 
 3.70 
 
 3.69 
 
 7.40 
 
 3.81 
 
 3.80 
 
 3.91 
 
 3.70 
 
 6.10 
 
 6.20 
 
 3.80 
 
 3.62 
 
 3.70 
 
 3. 69 
 
 4.90 
 
 3.80 
 
 3.80 
 
 3.89 
 
 3.70 
 
 4.00 
 
 6.00 
 
 3.75 
 
 3.60 
 
 3.70 
 
 3.71 
 
 4.00 
 
 3.70 
 
 3.70 
 
 3.90 
 
 3.70 
 
 5.80 
 
 7.50 
 
 3.72 
 
 3.65 
 
 3.75 
 
 4.10 
 
 3.96 
 
 3.67 
 
 6.30 
 
 3.90 
 
 3.90 
 
 6.50 
 
 7.00 
 
 3.70 
 
 3.65 
 
 5.35 
 
 4.00 
 
 3.93 
 
 3.60 
 
 4.20 
 
 3.90 
 
 3.81 
 
 6.10 
 
 6.98 
 
 3.70 
 
 3.60 
 
 4.01 
 
 4.00 
 
 3.85 
 
 3.60 
 
 3.80 
 
 3.85 
 
 3.80 
 
 6.00 
 
 5.70 
 
 3.70 
 
 3.60 
 
 3.89 
 
 3.90 
 
 3.81 
 
 3.60 
 
 3.80 
 
 3.80 
 
 3.80 
 
 4.90 
 
 5.50 
 
 3.70 
 
 3.70 
 
 3.85 
 
 5.50 
 
 3.72 
 
 3.80 
 
 3.70 
 
 4.08 
 
 3.80 
 
 5.00 
 
 4.91 
 
 3.70 
 
 3.69 
 
 6.40 
 
 6.20 
 
 3.70 
 
 3.89 
 
 3.70 
 
 3.88 
 
 3.82 
 
 4.50 
 
 4.13 
 
 5.70 
 
 3.67 
 
 4.30 
 
 6.04 
 
 3.70 
 
 3.90 
 
 3.98 
 
 3.85 
 
 3.89 
 
 4.30 
 
 5.90 
 
 4.20 
 
 3.60 
 
 3.90 
 
 4.40 
 
 3.75 
 
 4.40 
 
 4.00 
 
 3.80 
 
 3.90 
 
 4.10 
 
 7.00 
 
 3.90 
 
 3.60 
 
 3.90 
 
 3.90 
 
 3.68 
 
 4.37 
 
 3.99 
 
 3.81 
 
 3.80 
 
 4.00 
 
 5.00 
 
 3.84 
 
 3.60 
 
 3.89 
 
 3.90 
 
 3.65 
 
 4.30 
 
 3.93 
 
 3.80 
 
 3.80 
 
 3.90 
 
 4.30 
 
 3.75 
 
 3.60 
 
 3.80 
 
 3.90 
 
 3.60 
 
 5.21 
 
 3.90 
 
 3.80 
 
 3.81 
 
 4.50 
 
 4.15 
 
 3.73 
 
 3.65 
 
 3.80 
 
 3.90 
 
 3.60 
 
 5.02 
 
 3.81 
 
 3.80 
 
 4.80 
 
 4.30 
 
 4.00 
 
 3.70 
 
 3.68 
 
 3.90 
 
 3.70 
 
 3.70 
 
 4.00 
 
 3.80 
 
 3.89 
 
 6.03 
 
 4.10 
 
 3.80 
 
 3.70 
 
 3.72 
 
 3.88 
 
 3.80 
 
 3.70 
 
 6.00 
 
 3.71 
 
 3.81 
 
 4.90 
 
 4.00 
 
 3.80 
 
 3.80 
 
 3.65 
 
 3.80 
 
 3.80 
 
 3.70 
 
 5.80 
 
 3.70 
 
 5.30 
 
 5.80 
 
 3.90 
 
 3.80 
 
 4.30 
 
 3.63 
 
 3.75 
 
 4.30 
 
 3.70. 
 
 3.90 
 
 3.70 
 
 4.00 
 
 4.22 
 
 7.30 
 
 3.80 
 
 5.40 
 
 3.90 
 
 3.70 
 
 3.70 
 
 3.70 
 
 4.81 
 
 3.70 
 
 3.80 
 
 4.01 
 
 4.50 
 
 3.95 
 
 3.80 
 
 3.81 
 
 3.70 
 
 3.65 
 
 3.70 
 
 7.00 
 
 3.70 
 
 3.90 
 
 5.09 
 
 4.08 
 
 3.90 
 
 3.75 
 
 3.80 
 
 3.60 
 
 5.80 
 
 3.70 
 
 5.60 
 
 3.70 
 
 3.80 
 
 3.91 
 
 3.90 
 
 3.80 
 
 7.50 
 
 3.71 
 
 3.69 
 
 4.80 
 
 3.70 
 
 3.95 
 
 3.70 
 
 3.80 
 
 6.20 
 
 3.85 
 
 3.75 
 
 5.30 
 
 3.90 
 
 3.67 
 
 3.90 
 
 3.81 
 
 3.90 
 
 3.70 
 
 3.93 
 
 
 3.70 
 
 3.75 
 
 4.01 
 
 3.70 
 
 3.65 
 
 6.20 
 
 3.67 
 
 4.00 
 
 4.25 
 
 3.88 
 
 
 5.50 
 
 
 3.85 
 
 
 4.10 
 
 5.60 
 
 
 4.60 
 
 
 Dec. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 6.10 
 
 7.73 
 7.60 
 5.50 
 4.90 
 
 4.50 
 4.40 
 4.30 
 4.18 
 
 4.00 
 3.95 
 3.85 
 3.80 
 3.75 
 
 3.70 
 3.70 
 3.79 
 3.85 
 4.10 
 
 6.90 
 4.70 
 4.87 
 4.90 
 5.00 
 
 4.30 
 4.10 
 3.99 
 3.90 
 3.87 
 3.85 
 
ISLAND OF KAUAI. 35 
 
 Daily discharge, in second-feet, of Waimea River near Waimea, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 84 
 
 21 
 6.9 
 3.2 
 2.6 
 
 2.2 
 4.4 
 3.9 
 4.1 
 4.1 
 
 4.1 
 3.2 
 2.2 
 9.3 
 3.7 
 
 3.2 
 2.2 
 2.4 
 2.2 
 2.2 
 
 2.2 
 3.9 
 2.4 
 130 
 6.6 
 
 2.2 
 4.1 
 2.2 
 2.2 
 4.8 
 3.7 
 
 4.1 
 
 4.1 
 6.9 
 52 
 6.9 
 
 4.8 
 1.0 
 1.0 
 1.0 
 4.1 
 
 2.4 
 2.2 
 2.2 
 2.2 
 2.6 
 
 3.9 
 4.1 
 2.2 
 2.2 
 2.4 
 
 57 
 331 
 
 68 
 255 
 
 15 
 
 6.9 
 92.6 
 44 
 397 
 
 324 
 350 ! 
 551 
 120 
 16 
 
 226 
 357 
 
 6.6 
 255 
 540 
 
 357 
 320 
 
 68 
 
 80 
 
 30 
 
 19 
 
 10 
 6.6 
 4.1 
 
 30 
 
 19 
 
 10 
 6.6 
 4.1 
 1,070 
 
 30 
 9.3 
 4.1 
 3.2 
 1.0 
 174 
 
 130 
 
 89 
 
 58 
 6.9 
 331 
 
 320 
 
 397 
 
 320 
 
 1,230 
 
 850 
 
 836 
 
 226 
 
 174 
 69.2 
 11.2 
 
 286 
 850 
 
 80 
 
 19 
 
 12 
 
 6.6 
 2.2 
 2.2 
 
 2.2 
 2.2 
 
 5.4 
 4.1 
 2.2 
 1.6 
 1.6 
 
 0.5 
 1.6 
 2.2 
 2.2 
 6.6 
 
 2.2 
 2.2 
 1.6 
 1.2 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 226 
 
 14 
 4.1 
 3.0 
 1.6 
 1.4 
 
 1.0 
 1.0 
 2.2 
 19 
 151 
 
 2.2 
 1.6 
 1,230 
 130 
 6.9 
 3.2 
 
 2.2 
 1.0 
 0.6 
 1.0 
 1.0 
 
 .6 
 .4 
 .2 
 .6 
 .6 
 
 .2 
 
 .2 
 
 1.0 
 
 .9 
 
 .8 
 
 .2 
 .2 
 .2 
 .2 
 .6 
 
 .8 
 
 1.2 
 
 .6 
 
 .4 
 
 4.1 
 
 2.4 
 2.2 
 1.1 
 4.1 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.6 
 140 
 
 6.9 
 3.9 
 3.2 
 
 489 
 19 
 
 4.1 
 4.1 
 3.9 
 2.2 
 2.2 
 
 4.1 
 3.7 
 2.2 
 1.6 
 1.0 
 
 1.0 
 .2 
 .9 
 .8 
 .6 
 10 
 
 2.2 
 
 2.2 
 
 .9 
 
 .2 
 
 .2 
 
 .9 
 .9 
 
 1.1 
 10 
 
 6.6 
 
 6.6 
 4.1 
 
 174 
 
 397 
 
 335 
 
 24 
 4.1 
 4.1 
 4.1 
 4.1 
 
 1.0 
 2.2 
 2.2 
 19 
 1.0 
 
 .6 
 
 255 
 
 57 
 
 4.1 
 
 397 
 
 199 
 
 6.6 
 130 
 14 
 4.1 
 2.2 
 
 1,150 
 
 68 
 6.6 
 
 5.6 
 
 4.8 
 
 3.2 
 2.4 
 1.2 
 1.0 
 1.0 
 
 1.6 
 .8 
 .6 
 .2 
 .2 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 
 2.4 
 .8 
 
 2.2 
 2.2 
 2.2 
 2.1 
 1.6 
 
 2.4 
 
 2.2 
 
 1.0 
 
 .8 
 
 .2 
 
 .2 
 
 .2 
 2.2 
 3.9 
 4.1 
 
 24 
 
 22 
 
 19 
 
 113 
 
 82 
 
 6.6 
 320 
 255 
 
 4.1 
 58.1 
 
 850 
 
 199 
 5.4 
 4.1 
 6.6 
 38 
 
 6.6 
 5.8 
 4.1 
 2.8 
 2.4 
 
 2.2 
 2.2 
 1.0 
 441 
 14 
 
 2.2 
 2.2 
 1.0 
 1.0 
 6.1 
 
 6.6 
 6.4 
 4.8 
 4.1 
 2.4 
 
 2.2 
 1.1 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 16 
 
 357 
 
 2 
 
 1,430 
 
 3 
 
 1,310 
 
 4 
 
 174 
 
 5 
 
 68 
 
 6 
 
 57 
 
 7 
 
 30 
 
 8 
 
 24 
 
 9 
 
 19 
 
 10 
 
 13 
 
 11 
 
 6.6 
 
 12 
 
 5.4 
 
 13 
 
 3.2 
 
 
 2.2 
 
 15 
 
 1.6 
 
 16 
 
 1.0 
 
 17 
 
 1.0 
 
 18 
 
 2.1 
 
 19 
 
 3.2 
 
 20 
 
 10 
 
 21 
 
 780 
 
 22 
 
 47 
 
 23 
 
 64 
 
 24 
 
 68 
 
 25 
 
 80 
 
 26 
 
 19 
 
 27 
 
 10 
 
 28 
 
 6.4 
 
 29 
 
 4.1 
 
 30 
 
 3.5 
 
 31 
 
 3.2 
 
 
 
 Note.— Daily discharge determined from a rating curve well defined between 10 and 2,000 second-feet 
 but owing to the rapid fluctuation of the stream the monthly means have a low accuracy. 
 
 Monthly discharge of Waimea River near Waimea, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 
 130 
 
 397 
 
 1,070 
 
 1,230 
 
 1,230 
 
 4.1 
 
 489 
 
 397 
 1,150 
 
 850 
 
 441 
 1,430 
 
 2.2 
 
 1.0 
 
 1.0 
 
 1.6 
 
 ' .5 
 
 .2 
 
 .2 
 
 .2 
 
 .2 
 
 .2 
 
 1.0 
 
 1.0 
 
 10.8 
 47.5 
 
 161 
 
 211 
 58.8 
 
 1.02 
 23 
 62 
 47.2 
 65.7 
 18.2 
 
 149 
 
 664 
 2,730 
 9,900 
 
 12,600 
 
 "3,620 
 60.7 
 1,410 
 3,810 
 2,810 
 4.040 
 1,080 
 9,160 
 
 C. 
 
 February 
 
 C. 
 
 March 
 
 B. 
 
 ApriJ 
 
 B. 
 
 May 
 
 C. 
 
 June 
 
 D. 
 
 July 
 
 D. 
 
 August 
 
 C. 
 
 September 
 
 D. 
 
 October 
 
 D. 
 
 November 
 
 D. 
 
 December 
 
 C. 
 
 
 
 The year 
 
 1,430 
 
 .2 
 
 71.4 
 
 51,900 
 
 
 
 
 KAWAIKOI STREAM NEAR WAIMEA, KAUAI. 
 
 Location. — About 8 miles northeast of Knudsen's mountain house; reached from 
 
 Waimea by horse trail. 
 Records available.— April 3, 1909, to December 31, 1912. 
 Gage. — A 34-day Barrett & Lawrence clock register; datum unchanged. 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made from a wire suspension bridge. 
 Accuracy.— Records good. 
 
36 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements of Kawaikoi Stream near Waimea, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 2 
 Aug. 7 
 Oct. 6 
 
 W. V. Hardy 
 
 Feet. 
 1.54 
 1.67 
 1.50 
 
 Sec.-ft. 
 3.90 
 
 ....do 
 
 6.30 
 
 ....do 
 
 3.42 
 
 
 
 
 Daily gage height, in feet, of Kawaikoi Stream near Waimea, Kauai, for 1912. 
 [United States Geological Survey, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 . ... 
 
 1.75 
 1.70 
 1.79 
 1.70 
 1.69 
 
 1.69 
 
 1.73 
 1.74 
 1.71 
 
 1.65 
 1.62 
 1.61 
 1.65 
 1.60 
 
 1.65 
 1.63 
 1.65 
 1.67 
 1.64 
 
 1.64 
 1.62 
 1.82 
 2.05 
 2.00 
 
 2.00 
 2.00 
 1.90 
 2.04 
 2.38 
 1.95 
 
 2.49 
 3.32 
 2.40 
 2.11 
 2.11 
 
 2.11 
 2.05 
 1.90 
 1.95 
 2.35 
 
 2.04 
 
 2.00 
 2.00 
 2.00 
 2.05 
 
 2.05 
 2.42 
 3.10 
 2.80 
 3.24 
 
 3.59 
 3.83 
 2.70 
 2.50 
 2.90 
 
 2.75 
 2.30 
 2.33 
 3.40 
 
 2.90 
 2.58 
 3.38 
 2.70 
 2.70 
 
 2.90 
 3.08 
 2.42 
 2.95 
 3.38 
 
 3.60 
 2.95 
 2.45 
 2.40 
 2.20 
 
 2.10 
 2.04 
 1.98 
 1.97 
 2.56 
 
 2.27 
 2.00 
 1.95 
 1.94 
 5.05 
 
 3.60 
 3.15 
 3.08 
 3.10 
 3.05 
 3.13 
 
 3.00 
 2.45 
 2.28 
 2.30 
 2.60 
 
 3.07 
 3.50 
 2.77 
 3.57 
 2.45 
 
 2.35 
 2.50 
 2.70 
 2.70 
 2.22 
 
 2.20 
 2.70 
 2.50 
 2.17 
 2.09 
 
 2.00 
 1.95 
 1.90 
 1.88 
 1.92 
 
 1.87 
 1.80 
 1.80 
 1.80 
 1.80 
 
 1.80 
 1.80 
 1.80 
 1.85 
 1.85 
 
 1.78 
 1.80 
 2.10 
 1.90 
 1.77 
 
 1.70 
 1.70 
 1.70 
 3.10 
 2.63 
 
 2.18 
 2.30 
 1.92 
 1.80 
 1.85 
 
 1.80 
 1.90 
 2.80 
 2.00 
 2.00 
 
 1.95 
 
 1.95 
 1.90 
 1.90 
 1.85 
 1.80 
 
 1.80 
 1.80 
 1.77 
 1.87 
 1.84 
 
 1.75 
 1.70 
 1.70 
 1.72 
 1.92 
 
 1.78 
 1.70 
 1.70 
 1.88 
 1.88 
 
 1.85 
 1.80 
 1.77 
 1.75 
 1.70 
 
 1.75 
 1.78 
 1.75 
 1.78 
 1.85 
 
 1.80 
 1.80 
 1.70 
 1.62 
 1.55 
 
 1.55 
 1.58 
 1.58 
 1.57 
 1.55 
 
 1.52 
 1.55 
 1.80 
 2.88 
 1.98 
 
 1.80 
 1.90 
 1.75 
 2.00 
 2.00 
 
 2.00 
 2.00 
 2.00 
 2.00 
 2.00 
 
 2.00 
 2.00 
 2.00 
 2.00 
 2.00 
 
 2.00 
 2.00 
 2.00 
 2.00 
 2.00 
 2.00 
 
 2.00 
 2.00 
 2.00 
 2.00 
 2.20 
 
 2.20 
 2.20 
 2.20 
 2.25 
 2.28 
 
 2.25 
 2.95 
 5.30 
 5.20 
 4.65 
 
 2.90 
 2.50 
 2.37 
 2.30 
 2.30 
 
 2.30 
 2.30 
 2.30 
 2.30 
 2.30 
 
 2.30 
 2.30 
 2.30 
 2.30 
 2.30 
 2.30 
 
 2.30 
 2.30 
 2.30 
 2.30 
 2.30 
 
 2.30 
 2.25 
 2.02 
 1.92 
 1.97 
 
 1.80 
 1.70 
 1.70 
 1.70 
 1.70 
 
 1.70 
 1.70 
 1.70 
 1.70 
 1.70 
 
 1.70 
 1.70 
 1.70 
 1.70 
 1.70 
 
 1.70 
 1.70 
 1.70 
 1.70 
 1.70 
 
 1.70 
 1.70 
 1.70 
 1.50 
 1.52 
 
 1.54 
 1.52 
 1.51 
 1.81 
 1.80 
 
 1.70 
 1.70 
 
 
 
 2 
 
 
 3.96 
 
 3. 
 
 
 4 
 
 
 3.10 
 
 5 
 
 
 6. 
 
 
 
 7. 
 
 
 
 8. 
 
 
 
 9. 
 
 
 
 10... 
 
 
 
 11 
 
 
 
 12 
 
 
 
 13. 
 
 
 
 14. 
 
 
 
 
 15. . 
 
 
 
 
 16 
 
 
 
 
 17 
 
 
 
 
 18. 
 
 
 
 
 19. 
 
 
 
 
 20. 
 
 
 
 
 21 
 
 
 
 
 22 
 
 
 
 
 23 
 
 
 
 
 24 
 
 
 
 
 25 
 
 
 
 
 26. 
 
 
 
 
 27... 
 
 
 
 
 28.... 
 
 
 
 
 29 
 
 
 
 
 30 
 
 
 
 
 31. 
 
 
 
 
 
 
 
 
 
 Note. — Gage heights are means for 24 hours computed from Barrett & Lawrence record sheets. Clock 
 stopped Sept. 12 to Oct. 3, but record showed that the water surface fluctuated not more than 0.35, the 
 mean gage height for the period being estimated at 1.70. 
 
ISLAND OF KAUAI. 37 
 
 Daily discharge, in second-feet, of Kawaihoi Stream near Waimea, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 8.5 
 7.0 
 9.7 
 7.0 
 6.8 
 
 6.8 
 6.8 
 7.9 
 8.2 
 7.3 
 
 6.0 
 5.4 
 5.2 
 6.0 
 5.0 
 
 6.0 
 5.6 
 6.0 
 6.4 
 5.8 
 
 5.8 
 
 5.4 
 
 10.8 
 
 20.5 
 
 18.0 
 
 18.0 
 18.0 
 14.0 
 20.0 
 38.8 
 16.0 
 
 45.4 
 127.0 
 40.0 
 23.5 
 23.5 
 
 23.5 
 20.5 
 14.0 
 16.0 
 37.0 
 
 20.0 
 18.0 
 18.0 
 18.0 
 20.5 
 
 20.5 
 41.2 
 99.0 
 69.0 
 116.0 
 
 166.0 
 
 202.0 
 
 61.0 
 
 46.0 
 
 78.0 
 
 65.0 
 34.0 
 35.8 
 138.0 
 
 78.0 
 51.6 
 135.0 
 61.0 
 61.0 
 
 78.0 
 96.8 
 41.2 
 83.0 
 135.0 
 
 167.0 
 83.0 
 43.0 
 40.0 
 28.0 
 
 23.0 
 20.0 
 17.2 
 16.8 
 50.2 
 
 32.2 
 
 18.0 
 
 16.0 
 
 15.6 
 
 438.0 
 
 167.0 
 105.0 
 96.8 
 99.0 
 93.5 
 103.0 
 
 88.0 
 43.0 
 32.8 
 34.0 
 53.0 
 
 95.7 
 152.0 
 
 66.6 
 162.0 
 
 43.0 
 
 37.0 
 46.0 
 61.0 
 61.0 
 29.2 
 
 29.2 
 61.0 
 46.0 
 26.5 
 22.5 
 
 18.0 
 16.0 
 14.0 
 13.2 
 14.8 
 
 12.8 
 10.0 
 10.0 
 10.0 
 10.0 
 
 10.0 
 10.0 
 10.0 
 12.0 
 12.0 
 
 9.4 
 10.0 
 23.0 
 14.0 
 
 9.1 
 
 7.0 
 
 7.0 
 
 7.0 
 
 99.0 
 
 55.4 
 
 27.0 
 34.0 
 14.8 
 10.0 
 12.0 
 
 10.0 
 14.0 
 69.0 
 18.0 
 18.0 
 
 16.0 
 16.0 
 14.0 
 14.0 
 12.0 
 10.0 
 
 10.0 
 10.0 
 9.1 
 
 12.8 
 11.6 
 
 8.5 
 7.0 
 7.0 
 7.6 
 14.8 
 
 9.4 
 
 7.0 
 
 7.0 
 
 13.2 
 
 13.2 
 
 12.0 
 
 10.0 
 
 9.1 
 
 8.5 
 
 7.0 
 
 8.5 
 9.4 
 8.5 
 9.4 
 12.0 
 
 10.0 
 
 10.0 
 
 7.0 
 
 5.4 
 
 4.2 
 
 4.2 
 4.7 
 4.7 
 4.6 
 4.2 
 
 3.8 
 4.2 
 10.0 
 76.2 
 17.2 
 
 10.0 
 14.0 
 8.5 
 18.0 
 18.0 
 
 18.0 
 18.0 
 18.0 
 18.0 
 18.0 
 
 18.0 
 18.0 
 18.0 
 18.0 
 18.0 
 
 18.0 
 18.0 
 18.0 
 18.0 
 18.0 
 18.0 
 
 18.0 
 18.0 
 18.0 
 18.0 
 28.0 
 
 28.0 
 28.0 
 28.0 
 31.0 
 32.8 
 
 31.0 
 83.0 
 500.0 
 475.0 
 350.0 
 
 78.0 
 46.0 
 38.2 
 34.0 
 34.0 
 
 34.0 
 34.0 
 34.0 
 34.0 
 34.0 
 
 34.0 
 34.0 
 34.0 
 34.0 
 34.0 
 34.0 
 
 34.0 
 34.0 
 34.0 
 34.0 
 34.0 
 
 34.0 
 31.0 
 19.0 
 14.8 
 16.8 
 
 10.0 
 7.0 
 7.0 
 7.0 
 7.0 
 
 7.0 
 7.0 
 7.0 
 7.0 
 7.0 
 
 7.0 
 7.0 
 7.0 
 7.0 
 7.0 
 
 7.0 
 7.0 
 7.0 
 7.0 
 7.0 
 
 7.0 
 7.0 
 7.0 
 3.5 
 3.8 
 
 4.1 
 3.8 
 3.6 
 10.4 
 10.0 
 
 7.0 
 7.0 
 
 
 
 2 
 
 
 223.0 
 
 3 
 
 
 4 
 
 
 99.0 
 
 5 
 
 
 6 
 
 
 
 7 
 
 
 
 8* 
 
 
 
 g 
 
 
 
 10 
 
 
 
 11 
 
 
 
 12 
 
 
 
 
 
 
 14 
 
 
 
 
 
 
 
 
 
 
 
 
 17 
 
 
 
 
 
 
 
 
 19 
 
 
 
 
 
 
 
 
 21 
 
 
 
 
 22 
 
 
 
 
 
 
 
 
 24 
 
 
 
 
 
 
 
 
 26.. 
 
 
 
 
 27 
 
 
 
 
 28 .. 
 
 
 
 
 29 
 
 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 Monthly discharge of Kawaihoi Stream near Waimea, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 
 (total in 
 
 acre-feet.) 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 38.8 
 
 202.0 
 
 438.0 
 
 162.0 
 
 99.0 
 
 14.8 
 
 76.2 
 
 500.0 
 
 34.0 
 
 5.0 
 
 14.0 
 
 15.6 
 
 10.0 
 
 7.0 
 
 4.2 
 
 3.8 
 
 18.0 
 
 7.0 
 
 10.30 
 67.20 
 80.40 
 43.90 
 19.50 
 
 9.31 
 15.80 
 73.90 
 14.30 
 
 6.18 
 
 633 
 
 3,870 
 
 4,940 
 
 2,610 
 
 1,200 
 
 554 
 
 972 
 
 4,540 
 
 851 
 
 147 
 
 A. 
 
 February 
 
 A. 
 
 Marcb 
 
 A. 
 
 April 
 
 A. 
 
 May 
 
 A. 
 
 June 
 
 A. 
 
 July 
 
 A. 
 
 August 
 
 A. 
 
 September 
 
 B. 
 
 October 1-12 
 
 
 November 
 
 
 
 
 December 2 and 4 
 
 
 
 161. 00 
 
 639 
 
 
 
 
 
 
 The period 
 
 
 
 
 21,000 
 
 
 
 
 
 
 
 WAIAKOALI STREAM NEAR WAIMEA, KAXTAI. 
 
 Location. — About 10 miles northeast of Knudsen's mountain house; reached from 
 
 Waimea. 
 Records available.— April 13, 1909, to December 31, 1912. 
 Gage. — Vertical staff read at irregular times; datum unchanged. 
 Channel. — Permanent. 
 Discharge measurements. — Made from footbridge 75 feet below trail crossing; 
 
 low- water measurements made by wading 50 feet above gage. 
 
38 WATEK EESOURCES OF HAWAII, 1912. 
 
 Discharge measurements of Waiakoali Stream near Waimea, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 2 
 
 W. V. Hardv 
 
 Feet. 
 2.31 
 2.28 
 2.20 
 
 Sec.-ft. 
 0.94 
 
 Aug. 6 
 Oct. 5 
 
 do 
 
 do 
 
 
 
 .98 
 
 
 .84 
 
 
 
 
 Daily gage height, in feet, of Waiakoali Stream near Waimea, Kauai, for 1912 . 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug- 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 3.00 
 2.60 
 
 
 
 2.31 
 2.31 
 
 
 
 
 
 
 2 
 
 
 
 
 
 
 
 
 
 2.10 
 
 4.02 
 
 3 
 
 
 
 
 
 
 
 
 
 7.90 
 
 4 
 
 
 
 
 
 
 
 
 
 
 
 
 3.98 
 
 5 
 
 
 
 
 
 
 
 
 2.28 
 
 2.28 
 2.28 
 
 "2. 59" 
 2.48 
 
 2.20 
 2,20 
 
 
 
 6 
 
 
 
 
 
 
 
 
 
 
 7 
 
 
 
 
 
 
 
 
 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 9 
 
 
 
 
 
 
 
 
 
 
 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 
 11.. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 
 
 13 
 
 
 
 
 
 
 
 
 
 
 
 
 
 14 
 
 
 
 
 
 
 
 
 
 
 
 
 
 15 
 
 
 
 
 
 
 
 
 
 
 
 
 
 16 
 
 
 
 
 
 
 
 
 
 
 
 
 
 17 
 
 
 
 
 
 
 
 
 
 
 
 
 
 18 
 
 
 
 
 
 
 
 
 
 
 
 
 
 19 
 
 
 
 
 
 
 
 
 
 
 
 
 
 20 
 
 
 
 
 
 
 2.35 
 2.35 
 
 
 
 
 
 
 
 21 
 
 
 
 
 
 
 
 
 
 
 
 
 22 
 
 
 
 
 
 
 
 
 
 
 
 
 23 
 
 
 
 
 
 
 
 
 
 
 
 
 
 24 
 
 
 
 
 
 
 
 
 
 
 
 
 
 25 
 
 
 
 
 
 
 
 
 
 
 
 
 
 26 
 
 
 
 
 
 
 
 
 
 
 
 
 
 27 
 
 2.40 
 2.50 
 
 
 
 
 
 
 
 
 
 
 
 
 28 
 
 
 
 
 
 
 
 
 
 
 
 
 29 
 
 
 
 
 
 
 
 
 
 
 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 1 
 
 
 
 
 
 
 
 
 
 
 
 
 1 
 
 
 
 
 Note. — Miscellaneous gage readings. 
 
 MOHIHI STREAM NEAR WAIMEA, KAUAI. 
 
 Location. — About 12 miles northeast of Knudsen's mountain house; reached by 
 saddle horse from Waimea 1J days' travel. 
 
 Records available. — April 13, 1909, to December 31, 1913. 
 
 Drainage area. — 2.20 square miles. 
 
 Gage. — A vertical staff; datum unchanged. 
 
 Channel. — One at gage, two at low- water measurement section; practically perma- 
 nent. 
 
 Discharge measurements. — Made from suspension bridge. 
 
ISLAND OF KAUAI. 39 
 
 Discharge measurements of Mohihi Stream near Waimea, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 2 
 Aug. 6 
 Oct. 5 
 
 W. V. Hardy 
 
 Feet. 
 3.68 
 3.64 
 3.61 
 
 Sec.-ft. " 
 1.49 
 
 do 
 
 1.12 
 
 do 
 
 .71 
 
 
 
 
 The following gage readings were made: January 28, gage height, 4.0; April 2, gage 
 height, 4.10; December 3, gage height, 7.10. 
 
 WAIALAE STREAM NEAR WAIMEA, EAUAI. 
 
 Location. — About 3 miles by trail northeast of F. Gay's mountain house; reached by 
 
 saddle horse from Waimea in about one day's ride. 
 Records available. — August 1, 1910, to December 31, 1912. 
 Gage. — Barrett & Lawrence hydro-chronograph. 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made from a cable and car. 
 Accuracy. — Records good. 
 
 Discharge measurements of Waialae Stream near Waimea, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 5 
 
 W. V. Hardy. 
 do 
 
 Feet. 
 1.41 
 1.19 
 
 Sec.-ft. 
 17. < 
 5.1 
 
 Daily gage height, in feet, of Waialae Stream near Waimea, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 1.18 
 
 1.40 
 
 1.40 
 
 1.37 
 
 1.20 
 
 1.21 
 
 1.18 
 
 1.40 
 
 1.59 
 
 1.20 
 
 1.50 
 
 1.18 
 
 1.39 
 
 1.51 
 
 1.31 
 
 1.21 
 
 1.20 
 
 1.20 
 
 1.40 
 
 
 1.20 
 
 1.40 
 
 1.18 
 
 1.46 
 
 1.77 
 
 1.24 
 
 1.20 
 
 1.20 
 
 1.29 
 
 1.40 
 
 
 1.22 
 
 1.36 
 
 1.26 
 
 1.45 
 
 1.81 
 
 1.24 
 
 1.20 
 
 1.20 
 
 1.35 
 
 1.40 
 
 1.19 
 
 1.29 
 
 1.32 
 
 1.60 
 
 1.30 
 
 1.52 
 
 1.28 
 
 1.20 
 
 1.20 
 
 1.38 
 
 1.40 
 
 1.11 
 
 1.24 
 
 1.35 
 
 1.50 
 
 1.24 
 
 2.05 
 
 1.57 
 
 1.27 
 
 1.20 
 
 1.34 
 
 1.36 
 
 2.10 
 
 1.24 
 
 1.45 
 
 1.40 
 
 1.20 
 
 1.61 
 
 1.78 
 
 1.25 
 
 1.20 
 
 1.58 
 
 1.32 
 
 1.58 
 
 1.25 
 
 1.40 
 
 1.40 
 
 1.20 
 
 1.41 
 
 1.63 
 
 1.25 
 
 1.20 
 
 1.61 
 
 1.31 
 
 1.45 
 
 1.25 
 
 1.42 
 
 1.40 
 
 1.20 
 
 1.76 
 
 1.85 
 
 1.23 
 
 1.20 
 
 1.74 
 
 1.30 
 
 1.41 
 
 1.29 
 
 2.40 
 
 1.40 
 
 1.24 
 
 1.63 
 
 1.42 
 
 1.21 
 
 1.20 
 
 1.73 
 
 1.30 
 
 1.38 
 
 1.29 
 
 1.71 
 
 1.39 
 
 1.39 
 
 2.01 
 
 1.39 
 
 1.20 
 
 1.20 
 
 2.15 
 
 1.21 
 
 1.40 
 
 1.30 
 
 1.49 
 
 1.33 
 
 1.29 
 
 1.82 
 
 1.34 
 
 1.20 
 
 1.19 
 
 1.69 
 
 1.23 
 
 1.38 
 
 1.29 
 
 1.40 
 
 1.40 
 
 1.20 
 
 1.65 
 
 1.35- 
 
 1.20 
 
 1.24 
 
 2.00 
 
 1.22 
 
 1.31 
 
 1.28 
 
 1.39 
 
 1.42 
 
 1.20 
 
 1.63 
 
 1.33 
 
 1.28 
 
 1.36 
 
 1.89 
 
 1.73 
 
 1.24 
 
 1.25 
 
 1.39 
 
 1.39 
 
 1.19 
 
 1.40 
 
 1.32 
 
 1.78 
 
 1.29 
 
 1.73 
 
 1.63 
 
 1.22 
 
 1.21 
 
 1.34 
 
 1.32 
 
 1.13 
 
 1.33 
 
 1.30 
 
 1.41 
 
 1.25 
 
 1.60 
 
 1.30 
 
 1.20 
 
 1.20 
 
 1.33 
 
 1.30 
 
 1.10 
 
 1.31 
 
 1.42 
 
 1.28 
 
 1.21 
 
 1.54 
 
 1.22 
 
 120 
 
 1.68 
 
 1.28 
 
 1.26 
 
 1.05 
 
 1.30 
 
 1.58 
 
 1.20 
 
 1.20 
 
 1.50 
 
 1.20 
 
 1.20 
 
 1.66 
 
 1.35 
 
 1.22 
 
 1.03 
 
 1.24 
 
 1.32 
 
 1.19 
 
 1.20 
 
 1.49 
 
 1.21 
 
 1.20 
 
 1.82 
 
 1.57 
 
 1.21 
 
 1.01 
 
 1.20 
 
 1.24 
 
 1.16 
 
 1.20 
 
 1.42 
 
 1.18 
 
 1.20 
 
 1.61 
 
 1.58 
 
 1.30 
 
 1.03 
 
 1.20 
 
 1.22 
 
 1.14 
 
 1.20 
 
 1.40 
 
 1.10 
 
 1.20 
 
 2.04 
 
 2.01 
 
 1.25 
 
 1.65 
 
 1.20 
 
 1.21 
 
 1.31 
 
 1.23 
 
 1.41 
 
 1.19 
 
 1.20 
 
 1.81 
 
 1.78 
 
 1.26 
 
 1.64 
 
 1.19 
 
 1.20 
 
 1.33 
 
 1.20 
 
 1.47 
 
 1.20 
 
 1.20 
 
 1.59 
 
 1.64 
 
 1.64 
 
 1.57 
 
 1.15 
 
 1.20 
 
 1.30 
 
 1.35 
 
 1.50 
 
 1.26 
 
 1.20 
 
 1.40 
 
 1.45 
 
 1.40 
 
 1.31 
 
 1.77 
 
 1.29 
 
 1.31 
 
 1.38 
 
 1.49 
 
 1.22 
 
 1.20 
 
 1.33 
 
 1.34 
 
 1.34 
 
 1.29 
 
 1.36 
 
 1.40 
 
 1.20 
 
 1.26 
 
 1.44 
 
 1.21 
 
 1.20 
 
 1.99 
 
 1.30 
 
 1.35 
 
 1.20 
 
 1.24 
 
 1.32 
 
 1.26 
 
 1.24 
 
 1.43 
 
 2.06 
 
 1.20 
 
 1.69 
 
 1.26 
 
 1.30 
 
 1.21 
 
 1.35 
 
 1.29 
 
 1.88 
 
 1.22 
 
 1.43 
 
 1.46 
 
 1.20 
 
 1.42 
 
 1.22 
 
 1.30 
 
 1.20 
 
 1.32 
 
 1.22 
 
 1.79 
 
 1.20 
 
 1.40 
 
 1.17 
 
 1.20 
 
 1.53 
 
 1.52 
 
 1.28 
 
 
 1.28 
 
 1.21 
 
 1.40 
 
 1.19 
 
 1.39 
 
 1.09 
 
 1.20 
 
 1.42 
 
 1.67 
 
 1.51 
 
 
 1.40 
 
 
 1.29 
 
 
 1.40 
 
 1.07 
 
 
 1.54 
 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16, 
 17. 
 
 18. 
 19 
 20. 
 
 21. 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 2.12 
 3.18 
 3.28 
 2.02 
 1.70 
 
 1.58 
 1.50 
 1.55 
 1.45 
 1.40 
 
 1.34 
 1.30 
 1.21 
 1.20 
 1.21 
 
 1.20 
 1.20 
 1.20 
 1.20 
 1.50 
 
 1.46 
 1.82 
 1.88 
 1.58 
 1.72 
 
 1.59 
 
 1.42 
 1.30 
 1.27 
 1.20 
 1.20 
 
40 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, of Waialae Stream near Waimea, Kauai, for 1912. 
 
 Day. 
 
 l 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 22 
 
 23 
 24 
 25. 
 
 26, 
 27, 
 28, 
 29 
 30 
 31. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 5.8 
 
 17.0 
 
 17.0 
 
 15.2 
 
 6.3 
 
 6.8 
 
 5.8 
 
 17.0 
 
 29.3 
 
 6.3 
 
 23.0 
 
 5.8 
 
 16.4 
 
 23.7 
 
 11.6 
 
 6.8 
 
 6.3 
 
 6.3 
 
 17.0 
 
 21.6 
 
 6.3 
 
 17.0 
 
 5.8 
 
 20.6 
 
 43.6 
 
 8.2 
 
 6.3 
 
 6.3 
 
 10.5 
 
 17.0 
 
 13.9 
 
 7.2 
 
 14.6 
 
 9.1 
 
 20.0 
 
 46.8 
 
 8.2 
 
 6.3 
 
 6.3 
 
 14.0 
 
 17.0 
 
 6.1 
 
 10.5 
 
 12.2 
 
 30.0 
 
 11.0 
 
 24.4 
 
 10.1 
 
 6.3 
 
 6.3 
 
 15.8 
 
 17.0 
 
 4.2 
 
 8.2 
 
 14.0 
 
 23.0 
 
 8.2 
 
 67.0 
 
 27.9 
 
 9.6 
 
 6.3 
 
 13.4 
 
 14.6 
 
 71.0 
 
 8.2 
 
 20.0 
 
 17.0 
 
 6.3 
 
 30.8 
 
 44.4 
 
 8.7 
 
 6.3 
 
 28.6 
 
 12.2 
 
 28.6 
 
 8.7 
 
 17.0 
 
 17.0 
 
 6.3 
 
 17.6 
 
 32.4 
 
 8: 7 
 
 6.3 
 
 30.8 
 
 11.6 
 
 20.0 
 
 8.7 
 
 18.2 
 
 17.0 
 
 6.3 
 
 42.8 
 
 50.0 
 
 7.7 
 
 6.3 
 
 41.2 
 
 11.0 
 
 17.6 
 
 10.5 
 
 97.0 
 
 17.0 
 
 8.2 
 
 32.4 
 
 18.2 
 
 6.8 
 
 6.3 
 
 40.4 
 
 11.0 
 
 15.8 
 
 10.5 
 
 38.8 
 
 16.4 
 
 16.4 
 
 63.8 
 
 16.4 
 
 6.3 
 
 6.3 
 
 75.5 
 
 6.8 
 
 17.0 
 
 11.0 
 
 22.4 
 
 12.8 
 
 10.5 
 
 47.6 
 
 13.4 
 
 6.3 
 
 6.1 
 
 37.2 
 
 7.7 
 
 15.8 
 
 10.5 
 
 17.0 
 
 17.0 
 
 6.3 
 
 34.0 
 
 14.0 
 
 6.3 
 
 8.2 
 
 63.0 
 
 7.2 
 
 11.6 
 
 10.1 
 
 16.4 
 
 18.2 
 
 6.3 
 
 32.4 
 
 12.8 
 
 10.1 
 
 14.6 
 
 53.2 
 
 40.4 
 
 8.2 
 
 8.7 
 
 16.4 
 
 16.4 
 
 6.1 
 
 17.0 
 
 12.2 
 
 44.4 
 
 10.5 
 
 40.4 
 
 32.4 
 
 7.2 
 
 6.8 
 
 13.4 
 
 12.2 
 
 4.7 
 
 12.8 
 
 11.0 
 
 17.6 
 
 8.6 
 
 30.0 
 
 11.0 
 
 6.3 
 
 6.3 
 
 12.8 
 
 11.0 
 
 4.0 
 
 11.6 
 
 18.2 
 
 10.1 
 
 6.8 
 
 25.8 
 
 7.2 
 
 6.3 
 
 36.4 
 
 10.1 
 
 9.1 
 
 3.6 
 
 11.0 
 
 28.6 
 
 6.3 
 
 6.3 
 
 23.0 
 
 6.3 
 
 6.3 
 
 34.8 
 
 14.0 
 
 7.2 
 
 3.6 
 
 8.2 
 
 12.2 
 
 6.1 
 
 6.3 
 
 22.4 
 
 6.7 
 
 6.3 
 
 47.6 
 
 27.9 
 
 6.8 
 
 3.5 
 
 6.3 
 
 8.2 
 
 5.4 
 
 6.3 
 
 18.2 
 
 5.8 
 
 6.3 
 
 30.8 
 
 28.6 
 
 11.0 
 
 3.6 
 
 6.3 
 
 7.2 
 
 4.9 
 
 6.3 
 
 17.0 
 
 4.0 
 
 6.3 
 
 66.2 
 
 63.8 
 
 8.6 
 
 34.0 
 
 6.3 
 
 6.8 
 
 11.6 
 
 7.7 
 
 17.6 
 
 6.1 
 
 6.3 
 
 46.8 
 
 44.4 
 
 9.1 
 
 33.2 
 
 6.1 
 
 6.3 
 
 12.8 
 
 6.3 
 
 21.2 
 
 6.3 
 
 6.3 
 
 29.3 
 
 33.2 
 
 33.2 
 
 27.9 
 
 5.2 
 
 6.3 
 
 11.0 
 
 14.0 
 
 23.0 
 
 9.1 
 
 6.3 
 
 17.0 
 
 20.0 
 
 17.0 
 
 11.6 
 
 43.6 
 
 10.5 
 
 11.6 
 
 15.8 
 
 22.4 
 
 7.2 
 
 6.3 
 
 12.8 
 
 13.4 
 
 13.4 
 
 10.5 
 
 14.6 
 
 17.0 
 
 6.3 
 
 9.1 
 
 19.4 
 
 6.8 
 
 6.3 
 
 62.1 
 
 11.0 
 
 14.0 
 
 6.3 
 
 8.2 
 
 12.2 
 
 9.1 
 
 8.2 
 
 18.8 
 
 67.8 
 
 6.3 
 
 37.2 
 
 9.1 
 
 11.0 
 
 6.8 
 
 14.0 
 
 10.5 
 
 52.4 
 
 7.2 
 
 18.8 
 
 20.6 
 
 6.3 
 
 18.2 
 
 7.2 
 
 11.0 
 
 6.3 
 
 12.2 
 
 7.2 
 
 45.2 
 
 6.3 
 
 17.0 
 
 5.6 
 
 6.3 
 
 25.1 
 
 24.4 
 
 10.1 
 
 
 10.1 
 
 6.8 
 
 17.0 
 
 6.1 
 
 16.4 
 
 3.9 
 
 6.3 
 
 18.2 
 
 35.6 
 
 23.7 
 
 
 17.0 
 
 
 10.5 
 
 
 17.0 
 
 3.7 
 
 
 25.8 
 
 
 Monthly discharge of Waialae Stream near Waimea, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 33.2 
 
 34.0 
 67.0 
 50.0 
 52.4 
 15.8 
 75.5 
 67.8 
 71.0 
 66.2 
 97.0 
 175.0 
 
 5.8 
 3.5 
 5.2 
 6.3 
 4.9 
 6.1 
 5.8 
 3.7 
 4.2 
 6.3 
 7.2 
 6.3 
 
 14.1 
 11.2 
 23.7 
 15.5 
 12.4 
 7.68 
 25.9 
 13.5 
 12.7 
 20.9 
 23.8 
 32.0 
 
 867 
 
 644 
 
 1,460 
 
 922 
 
 762 
 
 457 
 
 1,590 
 
 830 
 
 756 
 
 1,290 
 
 1,420 
 
 1,970 
 
 B. 
 
 February 
 
 B. 
 
 March 
 
 B. 
 
 
 A. 
 
 May 
 
 A. 
 
 June 
 
 B. 
 
 July 
 
 A. 
 
 August 
 
 A. 
 
 
 B. 
 
 October 
 
 B. 
 
 November 
 
 B. 
 
 December 
 
 B. 
 
 
 
 
 175.0 
 
 3.5 
 
 17.8 
 
 13, 000 
 
 
 
 
 KEKAHA DITCH AT CAMP NO. 1,1 NEAR WAIMEA, KAUAI. 
 
 Location. — About 8 miles north of Waimea at camp No. 1 and a short distance below 
 
 the diversion dam. 
 Records available. — January 1, 1910, to December 31, 1912. 
 Gage. — Vertical staff ; read once a day; datum unchanged. 
 Discharge measurements. — Made with an 8-foot sharp-crested weir. 
 Cooperation. — Gage heights furnished by the Kekaha Sugar Co. 
 
 Described in Water-Supply Paper 318 as Kekaha ditch at intake near Waimea. 
 
ISLAND OF KAUAI. 
 
 41 
 
 The following discharge measurement was made by W. V. Hardy at the United 
 States Geological Survey gage, about 200 feet above the Kekaha Sugar Co.'s weir: 
 March 8, 1912: Gage height, 3.64 feet; discharge, 85.3 second-feet. 
 
 Daily discharge, in second-feet, of Kekaha ditch at camp No. 1, near Waimea, Kauai, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 62.0 
 57.0 
 55.0 
 57.0 
 85.0 
 
 87.5 
 62.0 
 53.0 
 71.0 
 80.0 
 
 57.0 
 53.0 
 71.0 
 90.0 
 64.0 
 
 53.0 
 49.0 
 45.0 
 43.0 
 43.0 
 
 75.0 
 53.0 
 47.0 
 90.0 
 90.0 
 
 62.0 
 53.0 
 55.0 
 57.0 
 53.0 
 90.0 
 
 80.0 
 75.0 
 90.0 
 90.0 
 90.0 
 
 73.0 
 62.0 
 66.0 
 59.5 
 55.0 
 
 90.0 
 75.0 
 59.5 
 53.0 
 49.0 
 
 47.0 
 47.0 
 45.0 
 53.0 
 58.2 
 
 90.0 
 90.0 
 90.0 
 90.0 
 90.0 
 
 90.0 
 90.0 
 90.0 
 80.0 
 
 90.0 
 90.0 
 90.0 
 90.0 
 90.0 
 
 90.0 
 90.0 
 90.0 
 90.0 
 90.0 
 
 90.0 
 91.2 
 91.2 
 91.2 
 91.2 
 
 91.2 
 90.0 
 82.5 
 77.5 
 77.5 
 
 91.2 
 91.2 
 80.0 
 66.0 
 90.0 
 
 91.2 
 91.2 
 91.2 
 91.2 
 91.2 
 91.2 
 
 91.2 
 91.2 
 91.2 
 85.0 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 n 
 
 85.0 
 90.0 
 
 90.0 
 90.0 
 82.5 
 82.5 
 82.5 
 
 85.0 
 80.0 
 75.0 
 71.0 
 67.2 
 
 87.5 
 90.0 
 75.0 
 71.0 
 62.0 
 
 57.0 
 54.0 
 55.0 
 53.0 
 
 87.5 
 
 80.0 
 57.0 
 53.0 
 77.5 
 57.0 
 
 51.0 
 49.0 
 49.0 
 47.0 
 85.0 
 
 85.0 
 85.0 
 66.0 
 53.0 
 49.0 
 
 49.0 
 53.0 
 80.0 
 75.0 
 90.0 
 
 100.0 
 53.0 
 90.0 
 
 87.5 
 87.5 
 66.0 
 
 53.0 
 49.0 
 47.0 
 59.5 
 57.0 
 
 49.0 
 43.0 
 43.0 
 41.0 
 43.0 
 
 45.0 
 41.0 
 41.0 
 80.0 
 57.0 
 
 51.0 
 49.0 
 45.0 
 53.0 
 66.0 
 
 49.0 
 66.0 
 49.0 
 53.0 
 85.0 
 
 57.0 
 85.0 
 57.0 
 43.0 
 37.0 
 
 37.0 
 37.0 
 35.5 
 35.5 
 35.5 
 
 35.5 
 41.0 
 53.0 
 41.0 
 90.0 
 
 90.0 
 90.0 
 57.0 
 90.0 
 90.0 
 
 71.0 
 53.0 
 64.0 
 47.0 
 43.0 
 
 37.0 
 37.0 
 35.5 
 35.5 
 53.0 
 
 41.0 
 60.8 
 41.0 
 35.5 
 35.5 
 75.0 
 
 47.0 
 37.0 
 35.5 
 34.0 
 34.0 
 
 62.0 
 41.0 
 37.0 
 75.0 
 75.0 
 
 47.0 
 75.0 
 53.0 
 71.0 
 90.0 
 
 82.5 
 49.0 
 41.0 
 37.0 
 34.0 
 
 34.0 
 
 57.0 
 85.0 
 90.0 
 66.0 
 
 53.0 
 90.0 
 90.0 
 62.0 
 90.0 
 90.0 
 
 90.0 
 90.0 
 90.0 
 82.5 
 57.0 
 
 53.0 
 90.0 
 80.0 
 62.0 
 53.0 
 
 49.0 
 49.0 
 49.0 
 45.0 
 39.0 
 
 37.0 
 
 35.5 
 34.0 
 41.0 
 35.5 
 
 34.0 
 34.0 
 34.0 
 32.0 
 32.0 
 
 32.0 
 30.0 
 30.0 
 30.0 
 30.0 
 
 45.0 
 37.0 
 35.5 
 47.0 
 35.5 
 
 32.0 
 30.0 
 30.0 
 37.0 
 45.0 
 
 45.0 
 37.0 
 37.0 
 34.0 
 30.0 
 
 30.0 
 30.0 
 90.0 
 90.0 
 90.0 
 
 90.0 
 90.0 
 90.0 
 71.0 
 49.0 
 
 90.0 
 90.0 
 71.0 
 90.0 
 53.0 
 95.0 
 
 92.5 
 57.0 
 43.0 
 37.0 
 41.0 
 
 57.0 
 41.0 
 37.0 
 90.0 
 92.5 
 
 66.0 
 53.0 
 45.0 
 41.0 
 37.0 
 
 82.5 
 55.0 
 45.0 
 95.0 
 80.0 
 
 90.0 
 90.0 
 92.5 
 100.0 
 73.0 
 
 57.0 
 49.0 
 45.0 
 47.0 
 100.0 
 
 92.5 
 
 2 
 
 92.5 
 
 3 
 
 85.0 
 
 4 
 
 85.0 
 
 5 
 
 90.0 
 
 6 
 
 90.0 
 
 7 
 
 90.0 
 
 8 
 
 90.0 
 
 9 
 
 90.0 
 
 10 
 
 80.0 
 
 11 
 
 80.0 
 
 12 
 
 66.0 
 
 13 
 
 62.0 
 
 14 
 
 53.0 
 
 15 
 
 53.0 
 
 16 
 
 57.0 
 
 17 
 
 59.5 
 
 18 
 
 53.0 
 
 19 
 
 53.0 
 
 20 
 
 92.5 
 
 21 
 
 85.0 
 
 22 
 
 92.5 
 
 23 
 
 92.5 
 
 24 
 
 92.5 
 
 25 
 
 92.5 
 
 26 
 
 92.5 
 
 27 
 
 92.5 
 
 28 
 
 75.0 
 
 29 
 
 62.0 
 
 30 
 
 57.0 
 
 31 
 
 53.0 
 
 
 
 a Ditch dry Apr. 5-13. 
 
 3 
 
 Note. — Discharge computed from Francis's formula: Q=3.33 LH where L=8 ft. 
 
 Monthly discharge of Kekaha ditch at camp No. 1, near Waimea, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 January 
 
 90.0 
 90.0 
 91.2 
 91.2 
 
 100.0 
 85.0 
 90.0 
 90.0 
 90.0 
 90.0 
 
 100.0 
 92.5 
 
 43.0 
 45.0 
 66.0 
 62.0 
 47.0 
 37.0 
 35.5 
 34.0 
 30.0 
 30.0 
 37.0 
 53.0 
 
 63.3 
 73.0 
 
 88.4 
 a 82.1 
 67.1 
 53.1 
 52.3 
 60.1 
 49.3 
 57.0 
 64.4 
 • 77.5 
 
 3,890 
 4,200 
 5,440 
 3,420 
 4,130 
 3,160 
 3,220 
 3,700 
 2,930 
 3,500 
 3,830 
 4,770 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 
 October 
 
 November 
 
 December 
 
 
 The year 
 
 100.0 
 
 30.0 
 
 6 65.2 
 
 46,200 
 
 
 a Ditch was dry Apr. 5-13; mean for the month is mean of 21 days. 
 b Mean fo'r the year is mean of 357 days. 
 
42 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 KEKAHA DITCH AT FLUME NO. JM NEAR WAIMEA, KAUAI. 
 
 Location. — About 6 miles north of Waimea and 2 miles below intake. 
 
 Records available. — December 1, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 7 a. m. and 5 p. m.; datum unchanged. 
 
 Channel. — Probably permanent. 
 
 Discharge measurements. — Made from tie beam 2 feet above gage. 
 
 Cooperation. — Station maintained in cooperation with Kekaha Sugar Co. 
 
 The following discharge measurement was made by W. V. Hardy: 
 March 8, 1912: Gage height, 2.80 feet; discharge, 84.6 second-feet. 
 
 Daily gage height, in feet, of Kekaha ditch at flume No. 2, near Waimea, Kauai, for 1912. 
 
 [Manuel Arruda, observer.] 
 
 Day. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7. 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Jan. 
 
 2.08 
 2.01 
 2.01 
 2.11 
 2.78 
 
 2.52 
 2.08 
 2.25 
 2.30 
 2.38 
 
 2.00 
 1.95 
 2.52 
 2.66 
 2.06 
 
 1.88 
 1.78 
 1.70 
 1.65 
 .1.65 
 
 2.34 
 
 1.88 
 2.28 
 2.80 
 2.64 
 
 2.15 
 2.00 
 2.16 
 2.02 
 2.14 
 2.80 
 
 Feb. 
 
 2.42 
 2.68 
 2.82 
 2.80 
 2.69 
 
 2.26 
 2.12 
 2.28 
 2.04 
 2.14 
 
 2.80 
 2.40 
 2.12 
 1.98 
 1.85 
 
 1.80 
 1.80 
 1.76 
 2.12 
 2.05 
 
 2.85 
 2.86 
 2.85 
 2.85 
 2.80 
 
 2.85 
 
 2.88 
 2.85 
 2.52 
 
 Mar. 
 
 2.86 
 2.85 
 2.85 
 2.86 
 2.86 
 
 2.85 
 2.85 
 2.82 
 2.85 
 2.86 
 
 2.86 
 2.87 
 2.86 
 2.85 
 2.85 
 
 2.85 
 2.75 
 2.58 
 2.53 
 2.70 
 
 2.85 
 2.72 
 2.48 
 2.25 
 2.85 
 
 2.85 
 2.85 
 2.86 
 2.85 
 2.85 
 2.85 
 
 Apr. 
 
 2.85 
 2.85 
 2.85 
 2.70 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (<0 
 (a) 
 
 2.50 
 2.60 
 
 2.60 
 2.60 
 
 2.60 
 2.46 
 2.37 
 2.25 
 1.98 
 
 May. 
 
 1.93 
 1.85 
 1.85 
 2.22 
 2.60 
 
 2.28 
 1.95 
 2.08 
 2.25 
 1.95 
 
 1.82 
 1.75 
 1.70 
 1.62 
 2.65 
 
 2.65 
 2.46 
 2.12 
 1.80 
 1.70 
 
 1,70 
 2.28 
 2.36 
 2.52 
 2.52 
 
 1.95 
 
 2.26 
 2.60 
 2.60 
 2.60 
 2.11 
 
 June. 
 
 1.88 
 1.66 
 1.60 
 2.02 
 1.95 
 
 1.65 
 1.55 
 1.52 
 1.50 
 1.55 
 
 1.55 
 1.50 
 1.50 
 2.32 
 1.90 
 
 1.74 
 1.68 
 1.62 
 2.06 
 2.06 
 
 1.78 
 2.05 
 1.67 
 2.30 
 2.46 
 
 1.92 
 2.30 
 1.80 
 1.53 
 1.50 
 
 July. 
 
 1.38 
 1.38 
 1.35 
 1.35 
 1.35 
 
 2.70 
 2.52 
 1.92 
 2.70 
 2.70 
 
 2.16 
 
 1.88 
 2.00 
 1.65 
 1.48 
 
 1.42 
 
 Aug. 
 
 1.55 
 1.38 
 1.35 
 1.30 
 1.58 
 
 1.85 
 1.45 
 2.05 
 2.40 
 2.20 
 
 1.90 
 2.25 
 2.22 
 2.50 
 2.70 
 
 2.26 
 1.71 
 1.45 
 1.38 
 1.30 
 
 1.35 
 2.10 
 2.65 
 2.38 
 2.15 
 
 1.74 
 2.70 
 2.52 
 1.98 
 2.70 
 2.70 
 
 Sept. 
 
 2.60 
 2.70 
 2.72 
 2.32 
 1.92 
 
 2.32 
 2.75 
 2.36 
 2.04 
 1.90 
 
 1.84 
 1.87 
 1.84 
 1.65 
 1.42 
 
 1.38 
 1.32 
 1.40 
 1.45 
 1.35 
 
 1.30 
 1.30 
 1.28 
 1.25 
 1.25 
 
 1.22 
 1.20 
 1.20 
 1.20 
 1.25 
 
 Oct. 
 
 1.50 
 1.35 
 1.30 
 1.48 
 1.28 
 
 1.20 
 1.15 
 1.20 
 1.40 
 1.60 
 
 1.55 
 1.35 
 1.32 
 1.22 
 1.18 
 
 1.15 
 1.95 
 2.32 
 2.75 
 2.38 
 
 2.75 
 2.75 
 2.75 
 2.02 
 2.16 
 
 2.75 
 2.75 
 2.08 
 2.42 
 2.28 
 2.85 
 
 Nov. 
 
 2.52 
 1.75 
 1.48 
 1.35 
 1.35 
 
 1.72 
 1.45 
 2.08 
 2.80 
 2.78 
 
 2.04 
 1.75 
 1.45 
 1.42 
 2.15 
 
 2.28 
 
 1.78 
 2.20 
 2.85 
 2.72 
 
 2.75 
 2.75 
 2.82 
 2.78 
 2.15 
 
 1.85 
 1.70 
 1.60 
 2.95 
 2.92 
 
 Dec. 
 
 2.80 
 2.70 
 2.60 
 2.68 
 2.75 
 
 2.75 
 2.75 
 
 2.75 
 2.75 
 2.50 
 
 2.35 
 2.08 
 1.98 
 1.80 
 1.82 
 
 1.95 
 1.95 
 1.80 
 1.75 
 2.75 
 
 2.68 
 2.80 
 2.80 
 2.80 
 2.80 
 
 2 80 
 2.65 
 2.28 
 1.98 
 1.88 
 1.80 
 
 a Ditch dry Apr. 5 to 13. 
 KEKAHA DITCH AT SIPHON NEAR WAIMEA, KAUAI. 
 
 Location. — About 4 miles north of Waimea, 50 feet above upper end of siphon where 
 
 ditch crosses Waimea River. 
 Records available. — December 1, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 7 a. m. and 5 p.m.; datum unchanged. 
 Channel. — Probably permanent. 
 
 Discharge measurements. — Made from a temporary foot bridge. 
 Cooperation. — Station maintained- in cooperation with Kekaha Sugar Co. 
 
 The following discharge measurement was made by W. V. Hardy: 
 March 8, 1912: Gage height, 4.43 feet; discharge, 74.4 second-feet. 
 
 i Described in Water Supply Paper 318, p 62, as " Kekaha 'ditch at flume No. 3." 
 
ISLAND OF KAUAI. 
 
 43 
 
 Daily gage height, in feet, of Kekaha ditch at siphon near Waimea, Kauai, for 1912. 
 
 [Manuel Arruda, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.82 
 1.75 
 1.70 
 1.75 
 3.40 
 
 2.75 
 1.85 
 1.85 
 1.88 
 2.08 
 
 1.70 
 1.60 
 3.05 
 3.42 
 1.80 
 
 1.65 
 1.52 
 1.45 
 1.40 
 1.60 
 
 2.30 
 1.65 
 2.42 
 4.35 
 3.45 
 
 1.78 
 1.70 
 1.82 
 1.68 
 1.80 
 4.28 
 
 2.05 
 
 3.52 
 4.30 
 4.65 
 4.25 
 
 2.00 
 
 1.80 
 1.85 
 1.72 
 1.80 
 
 4.70 
 2.10 
 1.75 
 1.62 
 1.52 
 
 1.50 
 1.50 
 1.50 
 1.68 
 1.70 
 
 4.22 
 5.00 
 4.70 
 4.50 
 4.40 
 
 4.50 
 
 4.75 
 4.15 
 2.58 
 
 4.45 
 4.60 
 4.90 
 4.88 
 4.45 
 
 4.88 
 4.80 
 4.62 
 4.80 
 4.50 
 
 4.55 
 5.05 
 5.10 
 4.90 
 4.92 
 
 4.72 
 3.45 
 2.48 
 2.12 
 3.52 
 
 4.70 
 3.20 
 2.05 
 1.90 
 5.30 
 
 5.10 
 4.62 
 4.68 
 4.55 
 4.35 
 4.68 
 
 4.65 
 4.65 
 4.40 
 3.00 
 
 "'3."60' 
 5.28 
 
 5.25 
 5.20 
 5.20 
 5.30 
 4.92 
 
 5.15 
 3.95 
 2.98 
 2.25 
 2.10 
 
 4.75 
 4.15 
 2.95 
 2.08 
 1.82 
 
 1.72 
 1.68 
 1.68 
 3.02 
 5.28 
 
 2.35 
 1.75 
 1.88 
 2.70 
 1.75 
 
 1.62 
 1.60 
 1.60 
 2.80 
 5.30 
 
 5.30 
 
 5.20 
 1.90 
 1.68 
 1.60 
 
 1.60 
 3.50 
 3.05 
 4.65 
 4.90 
 
 1.85 
 1.80 
 5.30 
 5.20 
 4.90 
 1.90 
 
 1.68 
 1.55 
 1.50 
 1.82 
 1.65 
 
 1.55 
 1.45 
 1.42 
 1.40 
 1.48 
 
 1.42 
 1.40 
 1.40 
 3.20 
 1.70 
 
 1.62 
 1.55 
 1.75 
 1.80 
 1.95 
 
 1.56 
 1.96 
 1.60 
 2.94 
 2.65 
 
 1.68 
 2.15 
 1.68 
 1.42 
 1.30 
 
 1.25 
 1.25 
 1.25 
 1.25 
 1.25 
 
 1.40 
 1.40 
 1.60 
 1.38 
 5.30 
 
 5.00 
 3.60 
 1.80 
 5.20 
 5.10 
 
 1.88 
 1.70 
 1.75 
 1.52 
 1.38 
 
 1.30 
 1.25 
 1.25 
 1.25 
 1.58 
 
 1.30 
 1.65 
 1.32 
 1.25 
 1.38 
 3.00 
 
 1.40 
 1.25 
 1.25 
 1.20 
 1.40 
 
 1.65 
 1.34 
 3.29 
 4.40 
 3.10 
 
 1.70 
 3.12 
 3.12 
 3.65 
 5.20 
 
 3.18 
 1.52 
 1.34 
 1.26 
 1.20 
 
 1.25 
 1.88 
 4.90 
 3.50 
 1.90 
 
 1.58 
 5.15 
 3.68 
 1.75 
 5.30 
 5.30 
 
 5.05 
 5.50 
 5.50 
 4.08 
 1.75 
 
 3.58 
 5.50 
 2.92 
 1.80 
 1.70 
 
 1.52 
 1.52 
 1.45 
 1.35 
 1.30 
 
 1.30 
 1.30 
 1.32 
 1.28 
 1.22 
 
 1.20 
 1.20 
 1.15 
 1.15 
 1.15 
 
 1.15 
 1.10 
 1.10 
 1.10 
 1.15 
 
 1.42 
 1.50 
 1.22 
 1.45 
 1.22 
 
 1.18 
 1.10 
 1.12 
 1.25 
 1.52 
 
 1.70 
 1.30 
 1.25 
 1.20 
 1.15 
 
 1.10 
 1.10 
 3.28 
 4.75 
 2.85 
 
 5.15 
 5.50 
 5.45 
 1.88 
 1.50 
 
 4.92 
 4.45 
 1.80 
 2.60 
 2.50 
 4.25 
 
 3.20 
 1.52 
 1.30 
 1.25 
 1.25 
 
 1.52 
 1.30 
 1.30 
 5.50 
 5.50 
 
 1.85 
 1.55 
 1.45 
 1.32 
 1.30 
 
 2.38 
 1.55 
 1.45 
 5.00 
 2.02 
 
 5.50 
 5.50 
 5.50 
 5.50 
 1.95 
 
 1.68 
 1.52 
 1.45 
 3.45 
 5.50 
 
 5.50 
 
 2 
 
 5.50 
 
 3 
 
 3.75 
 
 4 
 
 3.60 
 
 5 
 
 5.00 
 
 6 
 
 5.00 
 
 7 
 
 5.50 
 
 8 
 
 5.50 
 
 9 
 
 4.65 
 
 10 
 
 3.55 
 
 11 
 
 2.90 
 
 12 
 
 1.92 
 
 13 
 
 1.78 
 
 14 
 
 1.82 
 
 15 
 
 1.75 
 
 16 
 
 1.70 
 
 17 
 
 1.72 
 
 18 
 
 1.65 
 
 19 
 
 1.50 
 
 20 
 
 4.85 
 
 21 
 
 4.70 
 
 22 
 
 5.30 
 
 23... 
 
 5.50 
 
 24 
 
 5.50 
 
 25 
 
 5.50 
 
 26 
 
 5.30 
 
 27 
 
 4.50 
 
 28 
 
 2.25 
 
 29 
 
 1.80 
 
 30 
 
 1.68 
 
 31 
 
 1.60 
 
 
 
 KEKAHA DITCH AT TUNNEL No. 12, NEAR WAIMEA, KAUAI. 
 
 Location. — About 2 miles north of Waimea, and one-fourth mile below mouth of 
 
 tunnel No. 12. 
 Records available. — January 1, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read once daily; datum unchanged. 
 Discharge measurements. — Computed from flow over 6-foot weir with end con- 
 
 • tractions. 
 Cooperation. — Gage heights furnished by Kekaha Sugar Co. 
 
 Daily gage height, in inches, of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 25 
 22| 
 21 1 
 21 
 
 27i 
 
 25 
 
 24J 
 
 25 
 
 21 
 23 
 
 27! 
 25| 
 
 28| 
 24£ 
 28! 
 28! 
 28| 
 
 26 
 
 23! 
 
 23! 
 
 23 
 
 21i 
 
 27 
 23 
 21| 
 20J 
 
 29 
 
 29| 
 
 29| 
 30J 
 
 29J 
 
 29J 
 
 30 
 
 29! 
 
 30J 
 29! 
 30 
 30 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 28! 
 
 29 
 
 23! 
 
 22! 
 
 22! 
 
 22 
 
 30! 
 
 29 
 24 
 23 
 26 
 24 
 
 22 
 
 22 
 
 21! 
 
 20 
 
 30 
 
 23 
 22 
 21 
 21 
 23 
 
 21 
 
 20! 
 
 20! 
 
 21! 
 
 19! 
 
 19! 
 
 19! 
 
 18! 
 
 30 
 
 24! 
 
 a Ditch dry Apr. 5-13 
 
 19 
 16! 
 
 16! 
 16! 
 16! 
 
 22! 
 19i 
 23 
 18 
 
 20 
 
 23 
 
 18 
 17! 
 
 29 
 
 29 
 
 29! 
 
 28 
 
 22! 
 
 21 
 
 29! 
 
 24 
 
 24 
 
 21 
 
 19 
 
 19! 
 
 18 
 
 18 
 
 17 
 
 19 
 
 18-! 
 16! 
 20 
 16! 
 
 16 
 16! 
 16! 
 19 
 
 18! 
 
 17! 
 
 18 
 
 17! 
 
 15! 
 
 27 
 20 
 17 
 16 
 16 
 
 21! 
 
 16 
 
 16 
 
 31 
 
 29! 
 
 21! 
 19! 
 16 
 16 
 
 30 
 30 
 18 
 26 
 30 
 
 31! 
 31 
 29! 
 30! 
 
 28! 
 
 25! 
 
 24 
 
 23! 
 
44 
 
 WATEB RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in inches, of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, for 
 
 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 17 
 18. 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 21 
 
 20| 
 
 191 
 
 18* 
 
 18J 
 
 27J 
 22 
 
 29 
 
 231 
 
 214 
 
 21 
 
 221 
 
 201 
 
 27 
 
 19§ 
 19 
 
 191 
 
 21 
 
 23 
 
 27 
 
 30* 
 
 284 
 
 29 
 
 291 
 
 29i 
 281 
 29 
 28| 
 
 30 
 291 
 
 28 
 27| 
 
 30 
 261 
 26 
 32 
 
 31* 
 
 30* 
 
 29! 
 
 31 
 
 28i 
 
 311 
 
 271 
 
 241 
 
 221 
 
 30 
 
 30 
 
 30 
 
 27 
 
 22 
 
 221 
 
 211 
 
 22 
 
 26 
 
 23 
 
 251 
 231 
 24 
 281 
 
 24 
 
 24 
 24 
 20 
 20 
 
 181 
 
 18 
 
 171 
 
 18 
 
 221 
 
 18 
 22 
 18 
 17 
 17 
 
 29 
 22 
 18 
 17 
 161 
 
 16 
 
 241 
 
 191 
 
 171 
 
 291 
 
 24 
 
 29 
 
 291 
 
 17 
 17 
 
 181 
 
 17 
 
 161 
 
 16 
 16 
 16 
 16 
 151 
 
 151 
 151 
 151 
 151 
 151 
 
 15 
 151 
 281 
 25 
 
 28f 
 
 31 
 
 30 
 
 27 
 
 18 
 
 28 
 28 
 26 
 24 
 20 
 28 
 
 211 
 181 
 29 
 27 
 
 31 
 
 31 
 
 30 
 
 291 
 
 27 
 
 221 
 
 20 
 
 19 
 
 17 
 
 291 
 
 Daily discharge, in second-feet, of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June.' 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 57.0 
 49.2 
 46.2 
 44.0 
 64.5 
 
 60.0 
 57.0 
 55.0 
 57.0 
 60.0 
 
 48.5 
 44.0 
 50.0 
 64.5 
 58.5 
 
 44.0 
 42.5 
 40.0 
 37.5 
 37.5 
 
 64.5 
 47.0 
 61.5 
 71.5 
 70.0 
 
 51.5 
 45.5 
 44.0 
 48.5 
 43.2 
 63.0 
 
 69.0 
 55.0 
 68.0 
 68.0 
 69.0 
 
 60.0 
 51.5 
 51.5 
 50.0 
 45.5 
 
 66.0 
 63.0 
 50.0 
 45.5 
 41.8 
 
 40.0 
 39.0 
 39.5 
 44.0 
 50.0 
 
 63.0 
 75.0 
 68.0 
 70.0 
 71.5 
 
 70.8 
 68.0 
 70.0 
 69.0 
 
 70.0 
 73.0 
 72.2 
 73.0 
 72.2 
 
 72.2 
 74.0 
 71.5 
 71.5 
 71.5 
 
 71.5 
 .73.0 
 73.0 
 72.2 
 71.5 
 
 73.0 
 71.5 
 66.0 
 65.2 
 73.0 
 
 73.0 
 73.0 
 61.5 
 60.0 
 80.0 
 
 78.5 
 75.0 
 72.2 
 77.0 
 67.0 
 78.5 
 
 75.0 
 72.2 
 73.0 
 73.0 
 (a) 
 
 raj 
 
 (a) 
 
 (°) 
 
 (a) 
 
 (*) 
 
 00 
 
 (a) 
 (a) 
 68.0 
 70.0 
 
 70.0 
 71.5 
 77.0 
 77.0 
 75.0 
 
 75.0 
 72.2 
 69.0 
 64.5 
 58.5 
 
 71.5 
 73.0 
 70.0 
 63.0 
 57.0 
 
 51.5 
 
 48.5 
 48.5 
 47.0 
 75.0 
 
 70.0 
 53.0 
 50.0 
 60.0 
 53.0 
 
 47.0 
 47.0 
 45.5 
 41.0 
 73.0 
 
 73.0 
 70.0 
 63.0 
 48.5 
 44.0 
 
 44.0 
 47.0 
 66.0 
 66.0 
 64.5 
 
 55.0 
 48.5 
 73.0 
 73.0 
 73.0 
 63.0 
 
 50.0 
 47.0 
 44.0 
 44.0 
 50.0 
 
 44.0 
 42.5 
 42.5 
 45.5 
 40.0 
 
 40.0 
 40.0 
 37.5 
 73.0 
 55.0 
 
 47.0 
 48.5 
 45.5 
 47.0 
 60.0 
 
 50.0 
 58.5 
 51.5 
 53.0 
 68.0 
 
 53.0 
 53.0 
 53.0 
 41.0 
 41.0 
 
 39.0 
 32.5 
 32.5 
 32.5 
 32.5 
 
 48.5 
 40.0 
 50.0 
 36.0 
 73.0 
 
 73.0 
 77.0 
 57.0 
 73.0 
 70.0 
 
 60.0 
 47.0 
 53.0 
 44.0 
 41.0 
 
 37.5 
 36.0 
 35.0 
 36.0 
 48.5 
 
 36.0 
 47.0 
 36.0 
 34.0 
 34.0 
 73.0 
 
 41.0 
 35.0 
 34.0 
 32.5 
 31.0 
 
 50.0 
 36.0 
 35.0 
 70.0 
 66.0 
 
 50.0 
 60.0 
 47.0 
 63.0 
 73.0 
 
 70.0 
 47.0 
 36.0 
 34.0 
 32.5 
 
 31.0 
 
 47.0 
 64.5 
 69.0 
 55.0 
 
 40.0 
 35.0 
 71.5 
 53.0 
 70.0 
 71.5 
 
 70.0 
 70.0 
 71.5 
 66.0 
 
 48.5 
 
 44.0 
 71.5 
 53.0 
 53.0 
 44.0 
 
 39.0 
 40.0 
 36.0 
 36.0 
 34.0 
 
 34.0 
 34.0 
 37.5 
 34.0 
 32.5 
 
 31.0 
 31.0 
 31.0 
 31.0 
 30.0 
 
 30.0 
 30.0 
 30.0 
 30.0 
 30.0 
 
 39.0 
 37.5 
 32.5 
 41.0 
 32.5 
 
 31.0 
 31.0 
 32.5 
 32.5 
 39.0 
 
 37.5 
 35.0 
 36.0 
 35.0 
 30.0 
 
 29.0 
 30.0 
 68.0 
 57.0 
 66.0 
 
 69.0 
 77.0 
 73.0 
 63.0 
 36.0 
 
 66.0 
 66.0 
 60.0 
 53.0 
 41.0 
 66.0 
 
 63.0 
 41.0 
 34.0 
 31.0 
 31.0 
 
 45.5 
 31.0 
 31.0 
 77.0 
 71.5 
 
 60.0 
 45.5 
 40.0 
 31.0 
 31.0 
 
 66.0 
 45.5 
 37.5 
 70.0 
 63.0 
 
 77.0 
 77.0 
 73.0 
 71.5 
 63.0 
 
 48.5 
 41.0 
 39.0 
 34.0 
 71.5 
 
 73.0 
 
 2 
 
 73.0 
 
 3 
 
 36.0 
 
 4 
 
 60.0 
 
 5 
 
 73.0 
 
 6 
 
 78.5 
 
 7 
 
 77.0 
 
 8 
 
 71.5 
 
 9 „ 
 
 75.0 
 
 10 
 
 68.0 
 
 11 
 
 68.0 
 
 12 
 
 61.5 
 
 13 
 
 58.5 
 
 14 
 
 53.0 
 
 15 
 
 51.5 
 
 16 
 
 51.5 
 
 17 
 
 51.5 
 
 18 
 
 50.0 
 
 19 
 
 44.0 
 
 20 
 
 60.0 
 
 21 
 
 73.0 
 
 22 i 
 
 77.0 
 
 23 
 
 77.0 
 
 24 
 
 77.0 
 
 25 
 
 71.5 
 
 26 
 
 71.5 
 
 27 
 
 71.5 
 
 28 
 
 63.0 
 
 29 
 
 63.0 
 
 30 
 
 50.0 
 
 31 
 
 50.0 
 
 
 
 a Ditch dry Apr. 5-13. 
 
ISLAND OF KAUAI. 45 
 
 Monthly discharge of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 
 71.5 
 75.0 
 80.0 
 77.0 
 75.0 
 73.0 
 77.0 
 73.0 
 71.5 
 77.0 
 77.0 
 78.5 
 
 37.5 
 39.0 
 60.0 
 57.0 
 41.0 
 37.5 
 32.5 
 31.0 
 30.0 
 29.0 
 31.0 
 36.0 
 
 52.5 
 
 58.3 
 71.8 
 a 70. 3 
 57.5 
 48.8 
 47.2 
 50.0 
 41.8 
 46.5 
 51.4 
 63.8 
 
 3,230 
 
 
 3,350 
 
 
 4,410 
 
 
 2,930 
 
 May 
 
 3,540 
 
 June 
 
 2,900 
 
 July. 
 
 2,900 
 
 
 3,070 
 
 
 2,490 
 
 
 2,860 
 
 
 3,060 
 
 December 
 
 3,920 
 
 
 
 
 80.0 
 
 29.0 
 
 &54.6 
 
 38,700 
 
 
 
 a Ditch dry Apr. 5-13. Mean for the month is the mean of 21 days. 
 ft Mean for the year is the mean of 357 days. 
 
 WAIMEA DITCH NEAR WAIMEA, KAUAI. 
 
 Location. — About 4 miles north of Waimea and 300 feet below intake. 
 
 Records available. — November 4, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read once each day, at 7 a. m.; datum unchanged. 
 
 Channel. — Fairly permanent. 
 
 Discharge measurements. — Made from a pole bridge 8 feet long, and graduated in 
 
 1-foot sections from to 5.7 feet. 
 Diversions. — A lateral diverts water from the left bank of the ditch about 25 feet 
 
 below the gage. 
 Accuracy. — Record fair. 
 
 Discharge measurements of Waimea ditch near Waimea, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 8 
 
 W.V.Hardy 
 
 Feet. 
 2.29 
 1.63 
 1.66 
 
 Sec.-ft. 
 10.5 
 
 July 13 
 
 do 
 
 6.92 
 
 Sept. 30 
 
 do 
 
 3.61 
 
 
 
 Daily gage height, in feet, of Waimea ditch near Waimea, Kauai, for 1912. 
 [Honke, observer.] 
 
 Day. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 2.10 
 2.00 
 1.90 
 2.50 
 2.20 
 
 2.20 
 2.10 
 1.95 
 2.00 
 2.20 
 
 2.30 
 2.20 
 2.20 
 
 2.20 
 2.20 
 2.20 
 2.20 
 2.20 
 
 2.20 
 2.20 
 2.08 
 2.15 
 2.03 
 
 2.20 
 2.20 
 2.00 
 2.02 
 2.01 
 
 2.20 
 2.20 
 2.20 
 2.25 
 2.20 
 
 2.40 
 2.40 
 2.30 
 2.30 
 2.40 
 
 2.40 
 2.40 
 2.40 
 2.40 
 2.40 
 
 2.30 
 2.30 
 2.30 
 2.30 
 2.40 
 
 2.40 
 2.40 
 2.40 
 2.40 
 2.40 
 
 2.60 
 2.6a 
 2.50 
 2.50 
 2.50 
 
 1.80 
 1.71 
 1.85 
 1.90 
 2.43 
 
 2.20 
 1.70 
 1.70 
 1.78 
 1.60 
 
 1.78 
 1.60 
 1.80 
 
 1.78 
 2.60 
 
 1.73 
 1.60 
 1.65 
 1.80 
 1.72 
 
 1.72 
 1.71 
 1.72 
 1.70 
 1.71 
 
 1.70 
 1.70 
 1.70 
 2.00 
 1.50 
 
 1.50 
 1.42 
 1.50 
 1.50 
 1.50 
 
 1.50 
 1.50 
 1.42 
 1.40 
 2.20 
 
 1.20 
 1.20 
 1.53 
 2.20 
 2.10 
 
 1.43 
 1.42 
 1.40 
 1.40 
 1.43 
 
 1.40 
 1.45 
 1.42 
 1.93 
 2.00 
 
 1.51 
 1.70 
 1.63 
 1.93 
 2.20 
 
 2.20 
 2.20 
 2.20 
 2.20 
 
 1.88 
 
 2.20 
 2.20 
 2.10 
 
 1.72 
 1.72 
 1.72 
 1.71 
 1.71 
 
 1.72 
 1.72 
 1.70 
 1.72 
 1.72 
 
 1.70 
 1.67 
 1.65 
 1.60 
 1.60 
 
 1.65 
 1.70 
 1.70 
 1.70 
 1.70 
 
 2.60 
 1.95 
 1.98 
 1.95 
 1.82 
 
 1.82 
 1.80 
 1.72 
 2.75 
 2.70 
 
 1.79 
 1.70 
 1.65 
 1.62 
 
 1.90 
 2.10 
 1.70 
 1.55 
 1.30 
 
 1.40 
 1.70 
 1.80 
 1.80 
 1.80 
 
 1.60 
 1.50 
 1.34 
 1.72 
 1.72 
 
46 
 
 Daily gage height, in feet, of Waimea ditch near Waimea, Kauai, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16.. „ 
 
 1.96 
 
 2.00 
 1.70 
 1.55 
 2.03 
 
 2.20 
 2.00 
 1.88 
 2.20 
 2.20 
 
 2.05 
 1.98 
 
 2.00 
 1.99 
 1.90 
 19.0 
 2.05 
 
 2.13 
 2.20 
 2.20 
 2.20 
 
 2.20 
 2.20 
 2.20 
 2.20 
 
 2.40 
 2.30 
 2.30 
 2.10 
 2.00 
 
 2.40 
 2.20 
 2.02 
 2.20 
 2.30 
 
 2.30 
 2.30 
 2.30 
 2.30 
 2.30 
 2.30 
 
 2.20 
 2.22 
 2.50 
 2.09 
 2.00 
 
 2.10 
 1.80 
 1.08 
 1.05 
 1.01 
 
 2.60 
 2.20 
 1.85 
 1.81 
 1.71 
 
 2.40 
 2.60 
 1.82 
 1.80 
 1.80 
 
 1.80 
 1.80 
 2.20 
 2.20 
 2.51 
 
 1.90 
 1.80 
 2.40 
 2.20 
 2.10 
 1.70 
 
 1.70 
 1.70 
 1.70 
 1.70 
 1.70 
 
 1.70 
 1.40 
 1.40 
 1.40 
 1.90 
 
 1.80 
 1.53 
 1.59 
 1.52 
 1.51 
 
 2.00 
 1.70 
 1.60 
 1.70 
 1.50 
 
 1.42 
 1.51 
 1.50 
 1.50 
 1.48 
 
 1.48 
 1.40 
 1.40 
 1.40 
 1.40 
 2.25 
 
 2.15 
 1.72 
 1.70 
 1.60 
 1.62 
 
 1.65 
 1.50 
 2.30 
 2.30 
 1.70 
 
 1.70 
 2.30 
 2.20 
 1.75 
 2.20 
 2.20 
 
 1.69 
 1.70 
 1.70 
 1.70 
 1.40 
 
 1.42 
 1.40 
 1.40 
 1.40 
 1.39 
 
 1.25 
 1.25 
 1.30 
 1.60 
 1.67 
 
 1.70 
 1.70 
 2.20 
 2.20 
 2.20 
 
 2.55 
 
 2.55 
 2.70 
 2.10 
 1.90 
 
 2.90 
 2.60 
 2.20 
 2.20 
 2.20 
 2.75 
 
 2.12 
 1.90 
 1.66 
 2.70 
 2.18 
 
 2.70 
 2.61 
 2.65 
 2.00 
 1.91 
 
 1.79 
 1.75 
 1.76 
 1.71 
 1.70 
 
 1.70 
 
 17 
 
 1.65 
 
 18 
 
 1.61 
 
 19 
 
 1.60 
 
 20 
 
 21 
 
 1.60 
 1.90 
 
 22 
 
 2.05 
 
 23 
 
 2.20 
 
 24 
 
 2.00 
 
 25 
 
 1.92 
 
 26 
 
 1.50 
 
 27... 
 
 1.32 
 
 28 
 
 1.31 
 
 29 
 
 2.13 
 2.08 
 2.40 
 
 1.50 
 
 30 
 
 1.50 
 
 31 
 
 1.50 
 
 
 
 Note. — Gage was read without closing headgate for lateral whenever it might be in use, hence the dis- 
 charge for some days will be too small. 
 
 Daily discharge, in second-feet, of Waimea ditch near Waimea, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 7.8 
 6.6 
 5.5 
 13.7 
 9.2 
 
 9.2 
 7.8 
 6.0 
 6.6 
 9.2 
 
 4.5 
 6.4 
 10.6 
 9.2 
 9.2 
 
 6.2 
 6.6 
 3.6 
 2.6 
 
 7.0 
 
 9.2 
 6.6 
 5.3 
 9.2 
 9.2 
 
 7.2 
 6.4 
 7.3 
 8.2 
 7.6 
 12.1 
 
 9.2 
 9.2 
 9.2 
 
 9.2 
 
 9.2 
 
 9.2 
 9.2 
 7.6 
 
 8.5 
 7.0 
 
 9.2 
 9.2 
 6.6 
 6.8 
 6.7 
 
 6.6 
 6.5 
 5.5 
 5.5 
 
 7.2 
 
 8.2 
 9.2 
 9.2 
 9.2 
 9.2 
 
 9.2 
 9.2 
 9.2 
 9.2 
 
 9.2 
 9.2 
 9.2 
 9.9 
 9.2 
 
 12.1 
 12.1 
 10.6 
 10.6 
 12.1 
 
 12.1 
 12.1 
 12.1 
 12.1 
 12.1 
 
 12.1 
 10.6 
 10.6 
 
 7.8 
 6.6 
 
 12.1 
 9.2 
 6.8 
 9.2 
 
 10.6 
 
 10.6 
 10.6 
 10.6 
 10.6 
 10.6 
 10.6 
 
 10.6 
 10.6 
 10.6 
 10.6 
 12.1 
 
 12.1 
 12.1 
 12.1 
 12.1 
 12.1 
 
 15.3 
 15.3 
 13.7 
 13.7 
 13.7 
 
 9.2 
 9.5 
 13.7 
 
 7.7 
 6.6 
 
 7.8 
 
 4.5 
 
 .8 
 
 .7 
 
 .6 
 
 15.3 
 9.2 
 5.0 
 4.5 
 3.7 
 
 4.5 
 3.7 
 5.0 
 5.5 
 12.6 
 
 9.2 
 3.6 
 3.6 
 4.3 
 2.9 
 
 4.3 
 2.9 
 4.5 
 4.3 
 15.3 
 
 12.1 
 
 15.3 
 
 4.7 
 
 4.5 
 
 4.5 
 
 4.5 
 4.5 
 9.2 
 9.2 
 13.9 
 
 5.5 
 
 4.5 
 
 12.1 
 
 9.2 
 
 7.8 
 3.6 
 
 3.9 
 2.9 
 3.2 
 
 4.5 
 3.8 
 
 3.8 
 3.7 
 3.8 
 3.6 
 3.7 
 
 3.6 
 3.6 
 3.6 
 6.6 
 
 2.4 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.6 
 1.9 
 1.9 
 1.9 
 5.5 
 
 4.5 
 2.6 
 2.8 
 2.5 
 
 2.4 
 
 2.4 
 2.0 
 2.4 
 2.4 
 2.4 
 
 2.4 
 2.4 
 2.0 
 1.9 
 9.2 
 
 1.1 
 1.1 
 
 2.6 
 9.2 
 
 7.8 
 
 6.6 
 3.6 
 2.9 
 3.6 
 2.4 
 
 2.0 
 2.4 
 2.4 
 2.4 
 2.3 
 
 2.3 
 1.9 
 1.9 
 1.9 
 1.9 
 9.9 
 
 2.0 
 2.0 
 1.9 
 1.9 
 2.0 
 
 1.9 
 2.2 
 2.0 
 5.8 
 6.6 
 
 2.4 
 3.6 
 3.1 
 5.8- 
 9.2 
 
 8.5 
 3.8 
 3.6 
 2.9 
 3.0 
 
 3.2 
 
 2.4 
 10.6 
 10.6 
 
 3.6 
 
 3.6 
 10.6 
 9.2 
 4.0 
 9.2 
 9.2 
 
 9.2 
 9.2 
 9.2 
 9.2 
 5.3 
 
 9.2 
 9.2 
 7.8 
 3.9 
 3.9 
 
 3.8 
 3.8 
 3.8 
 3.7 
 
 3.7 
 
 3.5 
 3.6 
 3.6 
 3.6 
 1.9 
 
 2.0 
 1.9 
 1.9 
 1.9 
 1.9 
 
 1.3 
 1.3 
 1.5 
 2.9 
 
 3.4 
 
 3.8 
 3.8 
 3.6 
 3.8 
 3.8 
 
 3.6 
 3.4 
 3.2 
 2.9 
 2.9 
 
 3.2 
 3.6 
 3.6 
 3.6 
 
 3.6 
 
 3.6 
 3.6 
 9.2 
 9.2 
 6.6 
 
 14.5 
 14.5 
 16.9 
 7.8 
 5.5 
 
 20.3 
 15.3 
 9.2 
 9.2 
 9.2 
 17.7 
 
 15.3 
 6.0 
 6.4 
 6.0 
 
 4.7 
 
 4.7 
 4.5 
 3.8 
 17.7 
 16.9 
 
 4.5 
 4.4 
 3.6 
 3.2 
 3.0 
 
 8.1 
 5.5 
 3.3 
 16.9 
 8.9 
 
 16.9 
 15.5 
 16.1 
 6.6 
 5.6 
 
 4.4 
 4.0 
 4.1 
 3.7 
 3.6 
 
 5.5 
 
 2 
 
 7.8 
 
 3 
 
 3.6 
 
 4 
 
 2.6 
 
 5 
 
 1.5 
 
 6 
 
 1.9 
 
 7 
 
 3.6 
 
 8.. 
 
 4.5 
 
 9 
 
 4.5 
 
 10 
 
 4.5 
 
 11 
 
 2.9 
 
 12 
 
 2.4 
 
 13 
 
 1.7 
 
 14 
 
 3.8 
 
 15 
 
 3.8 
 
 16 
 
 3.6 
 
 17 
 
 3.2 
 
 18 
 
 3.0 
 
 19 
 
 2.9 
 
 20 
 
 2.9 
 
 21 
 
 5.5 
 
 22 
 
 7.2 
 
 23 
 
 9.2 
 
 24 
 
 6.6 
 
 25 
 
 5.7 
 
 26 
 
 2.4 
 
 27 
 
 1.6 
 
 28 
 
 1.5 
 
 29 
 
 2.4 
 
 30 
 
 2.4 
 
 31 
 
 2.4 
 
 
 
 Note. — A lateral diverts water from the left bank of ditch about 25 feet below gage. Daily discharge 
 determined from a rating curve prepared from measurements made when lateral was dry. When lateral 
 is carrying water the main ditch carries more water than is indicated by rating table. 
 
ISLAND OF KAUAI. 
 
 Monthly discharge of Waimea ditch near Waimea, Kauai, for 1912. 
 
 47 
 
 Month. 
 
 January... 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August. 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Discharge in second-feet. 
 
 Maximum. Minimum 
 
 13.7 
 9.2 
 12.1 
 15.3 
 15.3 
 
 10.6 
 9.2 
 20.3 
 17.7 
 9.2 
 
 20.3 
 
 2.6 
 5.5 
 6.6 
 .6 
 2.9 
 1.9 
 1.1 
 1.9 
 1.3 
 2.9 
 3.0 
 1.5 
 
 Mean. 
 
 7.61 
 
 8.24 
 10.40 
 9.52 
 6.82 
 3.48 
 3.28 
 4.85 
 4.37 
 7.25 
 7.60 
 3.78 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 474 
 640 
 566 
 419 
 207 
 202 
 298 
 260 
 446 
 452 
 232 
 
 4,660 
 
 KAMENEHUNE DITCH NEAR WAIMEA, KATJAI. 
 
 Location. — About 3 miles above Waimea and 200 feet below wire suspension bridge 
 across Waimea River; reached by wagon road up the right side of Waimea River. 
 Records available. — October 9, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, at irregular hours; datum unchanged. 
 Channel. — Probably shifting. 
 
 Discharge measurements. — Made from plank across ditch. 
 Accuracy. — Data insufficient for estimate of discharge. 
 
 Discharge measurements of Kamenehune ditch near Waimea, Kauai, in 1912. 
 [Hydrographer, -^ y Hardy.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 
 Feet. 
 
 1.23 
 
 .92 
 
 1.38 
 
 .48 
 
 Sec.-ft. 
 
 3.04 
 
 2.65 
 
 5.01 
 
 .27 
 
 Nov. 30 
 
 Feet. 
 1.10 
 1.02 
 1.45 
 
 Sec.-ft. 
 3.33 
 
 July 13 
 
 30 
 
 3.04 
 
 14 
 
 Dec. 2 
 
 5.19 
 
 Sept. 30 
 
 
 
 
 
 Daily gage height, in feet, of Kamenehune ditch near Waimea, Kauai, for 1912. 
 [P. Mokuahakea, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.30 
 
 1.10 
 
 .70 
 
 .50 
 
 .50 
 
 .40 
 
 .88 
 .82 
 .81 
 .81 
 
 .81 
 
 .75 
 
 .70 
 
 1.01 
 
 .85 
 
 1.00 
 .81 
 1.00 
 1.20 
 1.10 
 
 1.02 
 .90 
 .80 
 .80 
 
 1.00 
 
 .72 
 .60 
 .60 
 1.00 
 .94 
 
 1.09 
 1.10 
 1.40 
 1.23 
 1.12 
 
 1.30 
 1.30 
 1.20 
 1.25 
 1.31 
 
 1.30 
 1.30 
 1.15 
 1.30 
 1.10 
 
 1.38 
 1.30 
 1.20 
 .87 
 1.52 
 
 1.48 
 1.40 
 1.32 
 1.50 
 1.40 
 
 1.30 
 1.30 
 1.24 
 1.20 
 1.01 
 
 0.40 
 .45 
 .40 
 .40 
 
 1.10 
 
 .80 
 .80 
 .80 
 .82 
 .80 
 
 .80 
 .80 
 .80 
 .80 
 1.50 
 
 0.90 
 .92 
 .80 
 .60 
 .90 
 
 .50 
 .50 
 .48 
 .45 
 .55 
 
 .57 
 .59 
 .59 
 .60 
 .62 
 
 0.50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 
 L45 
 
 1.28 
 1.01 
 .81 
 1.60 
 1.19 
 
 0.40 
 .40 
 .50 
 .40 
 .50 
 
 .40 
 .41 
 .48 
 .70 
 .65 
 
 .60 
 .70' 
 
 1.31 
 .40 
 
 1.21 
 
 1.10 
 1.25 
 1.00 
 
 .85 
 .64 
 
 1.60 
 
 1.55 
 
 1.10 
 
 .96 
 
 .72 
 
 .50 
 .45 
 .41 
 .37 
 .34 
 
 0.44 
 .57 
 .54 
 .51 
 .65 
 
 .64 
 
 !70 
 .70 
 
 .78 
 
 .99 
 .98 
 .72 
 .70 
 .45 
 
 1.20 
 
 1.00 
 
 .85 
 
 .80 
 
 .60 
 
 .50 
 
 .50 
 
 .49 
 
 1.50 
 
 1.10 
 
 .70 
 .65 
 ..61 
 .54 
 .52 
 
 1.51 
 
 2 
 
 1.48 
 
 3 
 
 1.60 
 
 4 
 
 .39 
 
 5 
 
 .39 
 
 6 
 
 .40 
 
 7 
 
 .41 
 
 8 
 
 .52 
 
 9 
 
 .55 
 
 10 
 
 .49 
 
 11 
 
 .70 
 
 12 
 
 .75 
 
 13 
 
 .59 
 
 14 
 
 .70 
 
 15.. 
 
 .65 
 
48 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Kamenehune ditch near Waimea, Kauai, for 1912 — Continued. 
 
 Day. 
 
 16 
 17 
 
 18. 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 
 Jan. 
 
 0.71 
 .80 
 .81 
 
 .75 
 
 .77 
 
 .90 
 
 .95 
 
 .91 
 
 1.23 
 
 1.10 
 
 1.00 
 1.30 
 
 .90 
 1.00 
 
 .95 
 
 Feb. 
 
 0.80 
 .80 
 .70 
 .70 
 .73 
 
 1.39 
 1.54 
 1.33 
 1.35 
 1.11 
 
 1.10 
 1.20 
 1.40 
 
 Mar. 
 
 1.10 
 1.10 
 1.00 
 .85 
 1.30 
 
 1.10 
 .90 
 .75 
 .65 
 
 1.40 
 
 1.30 
 1.00 
 1.00 
 .85 
 .80 
 1.43 
 
 Apr. 
 
 1.00 
 
 1.31 
 
 1.10 
 
 .91 
 
 .65 
 .75 
 
 1.00 
 1.00 
 
 May. 
 
 1.30 
 
 1.20 
 
 1.20 
 
 .58 
 
 .51 
 
 .50 
 
 .50 
 
 .90 
 
 1.42 
 
 1.58 
 
 .90 
 
 .75 
 
 1.50 
 
 1.40 
 
 .93 
 
 June. 
 
 0.50 
 .50 
 .50 
 .50 
 .55 
 
 .43 
 
 .40 
 
 1.00 
 
 1.10 
 
 1.09 
 
 .97 
 
 .93 
 
 .62 
 
 July. 
 
 1.13 
 
 1.11 
 
 .94 
 
 .58 
 
 .47 
 
 .40 
 .40 
 .35 
 .35 
 .31 
 
 .30 
 .30 
 .40 
 .40 
 .39 
 1.20 
 
 Aug. 
 
 1.00 
 .90 
 .40 
 .40 
 
 .35 
 
 .30 
 
 .30 
 
 1.25 
 
 Sept. 
 
 0.31 
 .37 
 .32 
 .30 
 .30 
 
 .45 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .57 
 
 Oct. 
 
 0.48 
 
 .90 
 
 1.20 
 
 1.00 
 
 40 
 
 1.61 
 1.20 
 1.00 
 .95 
 1.30 
 1.40 
 
 Nov. 
 
 1.60 
 1.40 
 1.25 
 
 .70 
 .70 
 .65 
 .50 
 .40 
 
 .40 
 .40 
 .84 
 .40 
 
 Dec. 
 
 0.95 
 
 .87 
 
 .80 
 
 .98 
 
 1.00 
 
 1.30 
 .79 
 .70 
 
 .75 
 
 .50 
 
 .70 
 .64 
 
 MAKAWELI RIVER BASIN. 
 MAKAWELI RIVER NEAR WAIMEA, KAUAI. 
 
 Location. — About 2 miles northeast of Waimea; reached by wagon road up Maka- 
 
 weli River. 
 Records available. — October 6, 1911 3 to December 31, 1912. 
 Gage. — Vertical staff gage; read daily at noon; datum unchanged. 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made from a wire suspension bridge. 
 Accuracy. — Records good. 
 
 Discharge measurements of Mahaweli River near Waimea, Kauai, in 1912. 
 [Hydrographer, W. V. Hardy.] 
 
 Date. 
 
 Mar. 4. 
 
 July 13 
 13 
 13 
 13 
 13 
 
 Gage 
 height. 
 
 Feet. 
 3.55 
 7.40 
 6.80 
 5.98 
 5.56 
 5.40 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 29.8 
 2,080 
 1,360 
 
 744 
 
 524 
 
 427 
 
 Date. 
 
 July 14 
 
 Sept. 3( 
 
 Dec. 3 . 
 
 4. 
 
 10. 
 
 Gage 
 height. 
 
 Feet. 
 3.90 
 3.18 
 8.35 
 4.38 
 3.36 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 64.1 
 10.2 
 
 2,930 
 171 
 18.8 
 
ISLAND OF KAUAI. 
 
 49 
 
 Daily gage height, in feet, of Makaweli River near Waimea, Kauai, for 1912. 
 [Taguchi Umeichi, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 3.30 
 3.32 
 3.28 
 3.28 
 3.30 
 
 3.28 
 3.20 
 3.30 
 3.22 
 3.28 
 
 3.30 
 3.32 
 3.38 
 3.28 
 3.25 
 
 3.20 
 3.38 
 3.40 
 3.35 
 3.28 
 
 3.25 
 3.22 
 3.22 
 3.28 
 4.50 
 
 4.30 
 
 3.28 
 3.25 
 3.22 
 3.22 
 3.28 
 
 3.30 
 
 3.28 
 3,22 
 3.60 
 3.70 
 
 3.50 
 3.25 
 3.32 
 3.30 
 3.28 
 
 3.55 
 
 3.58 
 3.55 
 3.55 
 3.52 
 
 3.52 
 3.52 
 3.55 
 3.55 
 3.58 
 
 3.52 
 
 4.00 
 5.70 
 4.32 
 4.05 
 
 3.70 
 3.55 
 3.52 
 3.52 
 
 3.35 
 
 3.58 
 4.52 
 4.25 
 4.78 
 
 4.92 
 
 4.20 
 4.28 
 4.42 
 4.58 
 
 5.85 
 5.58 
 5.42 
 5.35 
 5.15 
 
 4.82 
 4.58 
 4.35 
 4.28 
 4.00 
 
 4.10 
 3.82 
 3.75 
 3.72 
 3.85 
 
 3.78 
 3.75 
 3.58 
 3.45 
 3.38 
 3.35 
 
 3.30 
 3.22 
 3.22 
 3.30 
 3.25 
 
 3.42 
 
 5.50 
 3.50 
 5.40 
 3.50 
 
 * 3. 45 
 
 3.40 
 3.38 
 3.32 
 3.30 
 
 3.30 
 3.55 
 3.48 
 3.30 
 3.32 
 
 3.30 
 3.35 
 3.32 
 3.50 
 3.45 
 
 3.40 
 3.38 
 3.38 
 3.35 
 3.32 
 
 3.30 
 3.35 
 3.32 
 3.55 
 3.62 
 
 3.50 
 
 3.48 
 3.45 
 3.52 
 3.42 
 
 3.40 
 3.35 
 3.30 
 3.58 
 3.52 
 
 3.50 
 3.45 
 3.40 
 3.35 
 3.28 
 
 3.60 
 3.52 
 3.40 
 3.25 
 3.22 
 
 3.20 
 
 3.35 
 3.58 
 3.45 
 3.42 
 3.38 
 
 3.30 
 3.28 
 3.22 
 3.55 
 3.40 
 
 3.38 
 3.28 
 3.25 
 3.22 
 3.22 
 
 3.35 
 3.32 
 3.52 
 3.48 
 3.38 
 
 3.35 
 3.32 
 3.32 
 3.35 
 3.32 
 
 3.30 
 
 3.30 
 3.38 
 3.32 
 3.62 
 
 3.48 
 3.45 
 3.42 
 3.38 
 3.35 
 
 3.40 
 3.30 
 3.30 
 3.35 
 3.40 
 
 3.30 
 3.30 
 3.32 
 3.30 
 3.28 
 
 3.25 
 3.20 
 6.50 
 4.55 
 3.58 
 
 3.32 
 3.35 
 3.35 
 3.30 
 3.22 
 
 3.20 
 3.28 
 3.55 
 3.52 
 3.48 
 
 3.35 
 3.35 
 3.32 
 3.38 
 3.35 
 3.30 
 
 3.30 
 
 3.28 
 3.22 
 3.20 
 3.20 
 
 3.48 
 3.30 
 3.30 
 3.35 
 3.32 
 
 3.40 
 3.38 
 3.35 
 3.35 
 3.38 
 
 3.38 
 3.35 
 3.32 
 3.32 
 3.30 
 
 3.48 
 3.35 
 3.35 
 3.30 
 3.30 
 
 4.58 
 4.22 
 4.00 
 3.55 
 3.40 
 3.32 
 
 3.30 
 3.28 
 3.30 
 4.58 
 4.32 
 
 4.10 
 3.80 
 3.55 
 3.30 
 3.38 
 
 3.32 
 3.32 
 3.28 
 3.35 
 3.35 
 
 3.32 
 
 3.38 
 3.35 
 3.30 
 3.30 
 
 3.28 
 3.20 
 3.35 
 3.35 
 3.32 
 
 3.32 
 
 3.30 
 3.30 
 3.25 
 3.12 
 
 3.20 
 3.28 
 3.80 
 3.30 
 3.15 
 
 3.10 
 
 3.08 
 3.08 
 3.05 
 3.02 
 
 3.05 
 3.10 
 3.10 
 3.15 
 3.15 
 
 3.10 
 
 3.45 
 3.22 
 3.35 
 3.28 
 
 3.25 
 3.25 
 3.50 
 3.45 
 3.30 
 
 3.30 
 3.55 
 3.50 
 3.45 
 3.40 
 3.40 
 
 3.35 
 
 3.32 
 3.58 
 3.45 
 3.38 
 
 3.43 
 
 3.45 
 3.70 
 3.60 
 3.38 
 
 3.32 
 3.30 
 3.28 
 3.28 
 3.22 
 
 3.22 
 
 3.28 
 3.25 
 3.22 
 3.88 
 
 3.52 
 
 3.38 
 3.60 
 3.38 
 3.20 
 
 3.20 
 3.35 
 3.32 
 3.38 
 3.35 
 
 5.75 
 
 2 
 
 7.45 
 
 3 
 
 7.40 
 
 4 
 
 4.30 
 
 5 
 
 4.10 
 
 6 
 
 4.00 
 
 7 
 
 3.60 
 
 8 
 
 4.10 
 
 9 
 
 3.30 
 
 10 
 
 3.33 
 
 11 
 
 3.28 
 
 12 
 
 3.20 
 
 13 
 
 3.20 
 
 
 3.10 
 
 15 
 
 3.10 
 
 16 
 
 3.00 
 
 17 
 
 3.00 
 
 18 
 
 3.00 
 
 
 3.00 
 
 20 
 
 4.00 
 
 21 
 
 4.70 
 
 22 
 
 4.90 
 
 23 
 
 4.08 
 
 24 
 
 4.20 
 
 25 
 
 3.50 
 
 26 
 
 3.40 
 
 
 3.38 
 
 28 
 
 3.38 
 
 
 3.32 
 
 30 
 
 3.32 
 
 
 3.15 
 
 
 
 Daily discharge, in second-feet, of Makaweli River near Waimea, Kauai, for 1912. 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec, 
 
 14.0 
 15.2 
 13.2 
 13.2 
 14.0 
 
 13.2 
 
 10.0 
 14.0 
 10.8 
 13.2 
 
 14.0 
 15.2 
 18.8 
 13.2 
 12.0 
 
 10.0 
 
 18.8 
 20.0 
 17.0 
 13.2 
 
 12.0 
 10.8 
 10.8 
 13.2 
 190.0 
 
 143.0 
 13.2 
 12.0 
 10.8 
 10.8 
 13.2 
 
 14.0 
 13.2 
 10.8 
 34.0 
 44.0 
 
 26.0 
 12.0 
 15.2 
 14.0 
 13.2 
 
 30.0 
 32.4 
 30.0 
 30.0 
 27.6 
 
 27.6 
 27.6 
 30.0 
 30.0 
 32.4 
 
 27.6 
 
 84.0 
 595.0 
 148.0 
 
 93.0 
 
 44.0 
 30.0 
 27.6 
 27.6 
 
 17.0 
 
 32.4 
 
 195.0 
 
 132.0 
 
 260.0 
 
 298.0- 
 122.0 
 139.0 
 171.0 
 209.0 
 
 674.0 
 537.0 
 466.0 
 438.0 
 366.0 
 
 270.0 
 209.0 
 154.0 
 139.0 
 84.0 
 
 102.0 
 57.8 
 49.5 
 46.2 
 62.0 
 
 52.8 
 49.5 
 32.4 
 23.0 
 18.8 
 17.0 
 
 14.0 
 10.8 
 10.8 
 14.0 
 12.0 
 
 21.2 
 500.0 
 
 26.0 
 458.0 
 
 26.0 
 
 23.0 
 
 20.0 
 18.8 
 15.2 
 14.0 
 
 14.0 
 30.0 
 24.8 
 14.0 
 15.2 
 
 14.0 
 17.0 
 15.2 
 26.0 
 23.0 
 
 20.0 
 
 18.8 
 18.8 
 17.0 
 15.2 
 
 14.0 
 17.0 
 15.2 
 30.0 
 36.0 
 
 26.0 
 24.8 
 23.0 
 27.6 
 21.2 
 
 20.0 
 17.0 
 14.0 
 32.4 
 27.6 
 
 26.0 
 23.0 
 20.0 
 17.0 
 13.2 
 
 34.0 
 27.6 
 20.0 
 12.0 
 10.8 
 
 10.0 
 17.0 
 32.4 
 23.0 
 21.2 
 18.8 
 
 14.0 
 13.2 
 10.8 
 30.0 
 20.0 
 
 18.8 
 13.2 
 12.0 
 10.8 
 10.8 
 
 17.0 
 15.2 
 27.6 
 24.8 
 18.8 
 
 17.0 
 15.2 
 15.2 
 17.0 
 15.2 
 
 14.0 
 14.0 
 18.8 
 15.2 
 36.0 
 
 24.8 
 23.0 
 21.2 
 18.8 
 17.0 
 
 20.0 
 14.0 
 14.0 
 17.0 
 20.0 
 
 14.0 
 14.0 
 15.2 
 14.0 
 13.2 
 
 12.0 
 
 10.0 
 
 1,110.0 
 
 202.0 
 
 32.4 
 
 15.2 
 17.0 
 17.0 
 14.0 
 10.8 
 
 10.0 
 13.2 
 30.0 
 27.6 
 24.8 
 
 17.0 
 17.0 
 15.2 
 18.8 
 17.0 
 14.0 
 
 14.0 
 13.2 
 10.8 
 10.0 
 10.0 
 
 24.8 
 14.0 
 14.0 
 17.0 
 15.2 
 
 20.0 
 
 18.8 
 17.0 
 17.0 
 18.8 
 
 18.8 
 17.0 
 15.2 
 15.2 
 14.0 
 
 24.8 
 17.0 
 17.0 
 14.0 
 14.0 
 
 209.0 
 126.0 
 84.0 
 30.0 
 20.0 
 15.2 
 
 14.0 
 
 13.2 
 
 14.0 
 
 209.0 
 
 148.0 
 
 102.0 
 55.0 
 30.0 
 14.0 
 18.8 
 
 15.2 
 15.2 
 13.2 
 17.0 
 17.0 
 
 15.2 
 18.8 
 17.0 
 14.0 
 14.0 
 
 13.2 
 10.0 
 17.0 
 17.0 
 15.2 
 
 15.2 
 14.0 
 14.0 
 12.0 
 
 10.0 
 13.2 
 55.0 
 14.0 
 8.0 
 
 6.0 
 5.4 
 5.4 
 4.5 
 3.6 
 
 4.5 
 6.0 
 6.0 
 8.0 
 8.0 
 
 6.0 
 23.0 
 10.8 
 17.0 
 13.2 
 
 12.0 
 12.0 
 26.0 
 23.0 
 14.0 
 
 14.0 
 30.0 
 26.0 
 23.0 
 20.0 
 20.0 
 
 17.0 
 15.2 
 32.4 
 23.0 
 18.8 
 
 21.8 
 23.0 
 44.0 
 34.0 
 18.8 
 
 15.2 
 14.0 
 13.2 
 13.2 
 10.8 
 
 10.8 
 13.2 
 12.0 
 10.8 
 66.2 
 
 27.6 
 18.8 
 34.0 
 18.8 
 10.0 
 
 10.0 
 17.0 
 15.2 
 18.8 
 17.0 
 
 621.0 
 
 2, 020. 
 
 1, 970. 
 
 143.0 
 
 102.0 
 
 84.0 
 34.0 
 102.0 
 14.0 
 15.8 
 
 13.2 
 10.0 
 10.0 
 6.0 
 6.0 
 
 3.0 
 3.0 
 3.0 
 3.0 
 84.0 
 
 239.0 
 292.0 
 
 98.4 
 122.0 
 
 26.0 
 
 20.0 
 18.8 
 18.8 
 15.2 
 15.2 
 8.0 
 
 14694°— wsp 336—14- 
 
50 WATER RESOURCES OP HAWAII, 1912. 
 
 Monthly discharge of Makaweli River near Waimea, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 190.0 
 
 595.0 
 
 674.0 
 
 500.0 
 
 36.0 
 
 36.0 
 
 1, 110. 
 
 209.0 
 
 209.0 
 
 55.0 
 
 66.2 
 
 2,020.0 
 
 10.0 
 10.8 
 17.0 
 10.8 
 10.0 
 10.8 
 10.0 
 10.0 
 10.0 
 
 3.6 
 10.0 
 
 3.0 
 
 23.3 
 54.2 
 
 175.0 
 4§.9 
 21.7 
 18.0 
 58.1 
 28.6 
 30.3 
 14.4 
 20.5 
 
 198.0 
 
 2,020.0 
 
 3.0 
 
 57.8 
 
 1,430 
 3,120 
 
 10,800 
 2,910 
 1,330 
 1,070 
 3,570 
 1,760 
 1,800 
 885 
 1,220 
 
 12, 200 
 
 42, 100 
 
 HALEKUA STREAM NEAR WAIMEA, KAUAI. 
 
 Location. — About 12 miles northeast of Waimea; station reached by saddle horse 
 over trail from Waimea via Gay's mountain house; two days required for round 
 trip; a guide is necessary. 
 
 Records available. — October 11, 1912, to December 31, 1912. 
 
 Gage. — Barrett & Lawrence automatic register. 
 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Measurements are made by wading. 
 
 Cooperation. — Station maintained in cooperation with Hawaiian Sugar Co. 
 
 Discharge measurements of HaleTcua Stream near Waimea, Kauai, in 1912. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Oct. 12 
 Nov. 18 
 
 W. V. Hardy 
 do 
 
 Feet. 
 3.52 
 
 Sec.-ft. 
 0.48 
 1.50 
 
 OLOKELE DITCH AT TUNNEL NO. 12, NEAR MAKAWELI, KAUAI. 
 
 Location. — About 12 miles northeast of Waimea ; about 9 miles, straight-line 
 measurement, northeast of Makaweli; and about 2 miles below intake. 
 
 Records available. — January 1, 1910, to December 31, 1912. 
 
 Gage. — A vertical staff gage; datum unchanged. 
 
 Channel. — Permanent. 
 
 Discharge measurements. — Made from a plank which is thrown across ditch when 
 measurement is taken. 
 
 Accuracy. — Very good. 
 
 Cooperation. — Gage is the property of the Hawaiian Sugar Co., which furnishes gage 
 heights at the end of the year. 
 
 Discharge measurements of Olokele ditch at tunnel No. 12, near Makaweli, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 10 
 
 W. V. Hardy ' 
 
 Feet. 
 2.72 
 3.01 
 2.04 
 
 Sec.-ft. 
 69.1 
 
 
 . . .do 
 
 78.8 
 
 Nov. 28 
 
 . . .do 
 
 45.3 
 
 
 
 
ISLAND OF KAUAI. 
 
 51 
 
 Daily gage height, in feet, ofOlohele ditch at tunnel No. 12, near Mahaweli, Kauai, for 1912. 
 
 [Hawaiian Sugar Co., observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2.40 
 2.40 
 2.60 
 2.40 
 2.50 
 
 2.90 
 2.60 
 3.50 
 3.50 
 2.70 
 
 2.50 
 2.40 
 3.10 
 3.20 
 2.50 
 
 2.40 
 2.40 
 2.30 
 2.30 
 2.30 
 
 2.50 
 2.40 
 2.40 
 2.80 
 2.50 
 
 2.40 
 2.40 
 2.40 
 2.30 
 2.30 
 2.80 
 
 2.40 
 -2.80 
 2.50 
 2.60 
 2.40 
 
 2.30 
 2.30 
 2.30 
 2.30 
 2.51 
 
 2.60 
 2.30 
 2.30 
 2.30 
 2.20 
 
 2.20 
 2.20 
 2.20 
 2.20 
 2.20 
 
 2.40 
 3.50 
 3.50 
 3.50 
 3.00 
 
 2.60 
 2.80 
 2.60 
 2.40 
 
 3.10 
 2.90 
 3.50 
 3.00 
 2.50 
 
 3.00 
 3.22 
 2.60 
 3.50 
 3.20 
 
 3.50 
 3.50 
 3.50 
 3.30 
 2.70 
 
 2.50 
 2.40 
 2.80 
 2.40 
 2.40 
 
 2.50 
 
 2.50 
 2.30 
 2.20 
 3.50 
 
 2.50 
 2.30 
 2.90 
 2.40 
 2.30 
 2.60 
 
 2.40 
 2.50 
 2.30 
 2.60 
 2.40 
 
 2.40 
 3.50 
 3.30 
 3.50 
 3.00 
 
 3.00 
 2.40 
 2.50 
 3.40 
 2.30 
 
 2.50 
 2.40 
 3.20 
 2.40 
 2.80 
 
 2.40 
 2.40 
 2.70 
 2.40 
 2.90 
 
 3.50 
 2.40 
 2.50 
 2.30 
 2.20 
 
 2.20 
 2.40 
 3.50 
 3.50 
 3.50 
 
 2.50 
 2.30 
 3.50 
 2.40 
 2.20 
 
 2.20 
 2.10 
 2.20 
 3.50 
 3.50 
 
 2.50 
 2.40 
 2.20 
 2.10 
 2.30 
 
 2.60 
 3.50 
 3.50 
 3.50 
 2.50 
 
 2.30 
 3.50 
 3.50 
 3.50 
 2.90 
 2.40 
 
 2.30 
 2.20 
 2.10 
 2.40 
 2.30 
 
 2.20 
 2.10 
 2.10 
 2.70 
 2.40 
 
 2.20 
 2.10 
 3.20 
 3.50 
 2.50 
 
 2.90 
 2.20 
 2.90 
 3.50 
 2.50 
 
 3.50 
 3.30 
 3.10 
 3.50 
 2.60 
 
 2.30 
 2.50 
 2.20 
 2.20 
 2.10 
 
 2.10 
 2.20 
 2.10 
 2.50 
 2.10 
 
 2.50 
 3.50 
 2.40 
 2.10 
 2.70 
 
 3.50 
 2.70 
 3.10 
 3.30 
 3.50 
 
 2.50 
 3.50 
 2.60 
 2.40 
 2.20 
 
 2.50 
 2.60 
 3.50 
 3.50 
 2.50 
 
 3.50 
 
 2.40 
 2.20 
 2.30 
 2.50 
 2.20 
 
 2.20 
 2.10 
 2.10 
 2.00 
 2.10 
 
 2.10 
 2.10 
 3.50 
 3.20 
 2.40 
 
 3.20 
 2.40 
 2.50 
 3.50 
 3.30 
 
 2.30 
 2.30 
 2.10 
 2.10 
 2.10 
 
 2.40 
 2.30 
 2.30 
 2.30 
 2.30 
 
 2.30 
 3.50 
 2.90 
 2.40 
 3.50 
 3.40 
 
 2.80 
 3.50 
 3.40 
 3.20 
 2.50 
 
 3.50 
 3.50 
 2.70 
 2.40 
 2.30 
 
 2.20 
 2.30 
 2.20 
 2.20 
 2.10 
 
 2.10 
 2.90 
 2.20 
 2.40 
 2.20 
 
 2.30 
 3.40 
 2.20 
 2.10 
 2.00 
 
 2.00 
 2.00 
 2.00 
 2.20 
 3.50 
 
 2.30 
 2.50 
 3.50 
 2.20 
 2.50 
 
 2.60 
 2.30 
 3.20 
 2.90 
 3.40 
 
 2.20 
 2.20 
 2.10 
 2.10 
 2.10 
 
 2.40 
 2.20 
 2.60 
 3.50 
 2.60 
 
 3.50 
 3.30 
 3.50 
 2.40 
 2.20 
 
 3.50 
 3.30 
 3.50 
 3.10 
 3.40 
 3.00 
 
 2.90 
 2.30 
 2.40 
 2.60 
 3.80 
 
 2.90 
 
 2.90 
 2.30 
 3.80 
 2.70 
 
 2.40 
 2.20 
 2.20 
 2.10 
 2.10 
 
 2.10 
 2.10 
 2.40 
 3.60 
 2.30 
 
 . 3.70 
 3.00 
 2.70 
 2.50 
 2.20 
 
 2.20 
 2.10 
 2.02 
 3.70 
 2.60 
 
 3.80 
 
 2 
 
 3.60 
 
 3 
 
 3.70 
 
 4 
 
 3.00 
 
 5 
 
 3.50 
 
 6 
 
 2.70 
 
 7 
 
 2.60 
 
 8 
 
 3.70 
 
 9 
 
 2.40 
 
 10 
 
 2.60 
 
 11 
 
 2.40 
 
 12 
 
 2.20 
 
 13 
 
 2.10 
 
 
 2.20 
 
 15 
 
 2.30 
 
 16 
 
 2.80 
 
 17 
 
 2.10 
 
 18 
 
 2.20 
 
 19 
 
 2.20 
 
 20 
 
 3.70 
 
 21 
 
 3.00 
 
 22 
 
 3.30 
 
 23 
 
 3.70 
 
 
 3.70 
 
 25.. 
 
 3.70 
 
 26 
 
 3.70 
 
 
 2.90 
 
 28 
 
 3.00 
 
 
 2.50 
 
 30 
 
 3.00 
 
 
 2.40 
 
 
 
 in second-feet, of Olohele ditch at tunnel No. 12, near Mahaweli, Kauai, 
 for 1912. 
 
 Jan. 
 
 Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 90 
 
 57 
 
 61 
 
 57 
 
 94 
 
 90 
 
 75 
 54 
 57 
 64 
 110 
 
 75 
 75 
 54 
 110 
 
 57 
 50 
 50 
 47 
 
 47 
 
 47 
 47 
 57 
 102 
 54 
 
 106 
 79 
 68 
 61 
 50 
 
 50 
 47 
 44 
 106 
 64 
 
 110 
 102 
 106 
 79 
 
 64 
 106 
 57 
 64 
 
 57 
 50 
 47 
 50 
 54 
 
 71 
 47 
 50 
 50 
 106 
 
 79 
 90 
 106 
 106 
 106 
 
 106 
 75 
 79 
 61 
 79 
 57 
 
52 
 
 Monthly discharge ofOlokele ditch at tunnel iVb. 12, near Makaweli, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 110 
 110 
 
 110 
 
 44 
 
 63.9 
 62.0 
 72.7 
 67.5 
 72.0 
 64.2 
 67.8 
 63.2 
 62.7 
 71.2 
 65.8 
 76.8 
 
 67.5 
 
 3,930 
 3,570 
 4,470 
 4,020 
 4,430 
 3,820 
 4,170 
 3,890 
 3,730 
 4,380 
 3,920 
 4,720 
 
 49,000 
 
 OLOKELE DITCH AT WEIR NEAR WAIMEA, EA.UAI. 
 
 Location. — About 8 miles northeast of Waimea and 1 mile east of Camp 9. 
 
 Records available. — January 1 to December 31, 1912. 
 
 Gage. — A vertical staff gage spiked to the right side of ditch. Zero on gage is equal 
 
 to crest of weir. 
 Discharge measurements. — Made from plank over ditch and by a 12-foot weir with 
 
 end contractions. 
 Accuracy. — Conditions and records are good. 
 Cooperation. — Station is the property of and records are furnished by the Hawaiian 
 
 Sugar Co. 
 
 Daily discharge, in second-feet, ofOlohele ditch at weir near Waimea, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 56.6 
 56.6 
 64.4 
 60.1 
 79.6 
 
 82.9 
 64.4 
 74.9 
 74.9 
 81.2 
 
 60.1 
 57.3 
 70.3 
 68.2 
 65.9 
 
 55.8 
 55.8 
 54.5 
 53.1 
 53.1 
 
 61.5 
 55.8 
 54.5 
 81.2 
 61.5 
 
 55.8 
 54.5 
 54.5 
 53.1 
 53.1 
 71.9 
 
 60.1 
 63.0 
 63.0 
 70.3 
 51.7 
 
 49.0 
 
 47.7 
 47.7 
 46.4 
 46.4 
 
 67.4 
 57.3 
 51.7 
 51.0 
 50.4 
 
 50.4 
 50.4 
 50.4 
 50.4 
 50.4 
 
 53.1 
 68.9 
 92.5 
 94.2 
 78.0 
 
 70.3 
 68.9 
 65.9 
 57.3 
 
 58.7 
 82.9 
 74.9 
 87.6 
 61.5 
 
 70.3 
 79.6 
 73.4 
 78.0 
 87.6 
 
 92.5 
 92.5 
 92.5 
 92.5 
 70.3 
 
 64.4 
 57.3 
 65.9 
 58.7 
 54.5 
 
 64.4 
 57.3 
 57.3 
 50.4 
 71.9 
 
 74.9 
 54.5 
 60.1 
 58.7 
 54.5 
 64.4 
 
 63.0 
 64.4 
 54.5 
 51.7 
 67.4 
 
 57.3 
 87.6 
 92.5 
 87.6 
 87.6 
 
 78.0 
 61.5 
 63.0 
 68.9 
 57.3 
 
 54.5 
 61.5 
 80.4 
 64.4 
 55.8 
 
 70.3 
 55.8 
 64.4 
 64.4 
 53.1 
 
 82.9 
 64.4 
 61.5 
 58.7 
 50.4 
 
 47.7 
 49.0 
 58.7 
 76.5 
 89.3 
 
 67.4 
 55.8 
 60.1 
 76.5 
 50.4 
 
 47.7 
 46.4 
 46.4 
 50.4 
 90.9 
 
 84.5 
 54.5 
 50.4 
 47.7 
 51.7 
 
 51.7 
 79.6 
 71.9 
 74.9 
 78.0 
 
 58.7 
 70.3 
 92.5 
 94.2 
 84.5 
 58.7 
 
 53.1 
 50.4 
 
 47.7 
 50.4 
 58.7 
 
 50.4 
 47.7 
 46.4 
 55.8 
 61.5 
 
 46.4 
 47.7 
 50.4 
 89.3 
 65.9 
 
 67.4 
 57.3 
 50.4 
 70.3 
 70.3 
 
 64.4 
 89.3 
 64.4 
 76.5 
 84.5 
 
 55.8 
 60.1 
 53.1 
 47.7 
 46.4 
 
 46.4 
 
 58.7 
 50.4 
 46.4 
 49.0 
 
 76.5 
 64.4 
 76.5 
 50.4 
 60.1 
 
 68.9 
 86.0 
 61.5 
 89.3 
 87.6 
 
 74.9 
 64.4 
 81.2 
 58.7 
 53.1 
 
 53.1 
 70.3 
 65.9 
 63.0 
 70.3 
 
 57.3 
 73.4 
 51.7 
 55.8 
 55.8 
 54.5 
 
 51.7 
 46.4 
 45.1 
 44.4 
 43.8 
 
 50.4 
 49.0 
 80.4 
 76.5 
 74.9 
 
 58.7 
 63.0 
 53.1 
 61.5 
 92.5 
 
 70.3 
 51.0 
 
 47.7 
 46.4 
 45.1 
 
 46.4 
 53.1 
 64.4 
 
 58.7 
 67.4 
 
 51.7 
 78.0 
 89.3 
 67.4 
 74.9 
 91.7 
 
 81.2 
 82.9 
 90.9 
 84.5 
 65.9 
 
 70.3 
 92.5 
 70.3 
 63.0 
 53.1 
 
 50.4 
 55.2 
 54.5 
 
 47.7 
 45.1 
 
 45.1 
 64.4 
 61.5 
 
 47.7 
 51.7 
 
 51.7 
 51.7 
 61.5 
 45.1 
 44.4 
 
 41.2 
 
 42.5 
 42.5 
 49.0 
 62.2 
 
 64.4 
 65.9 
 57.3 
 64.4 
 51.7 
 
 51.7 
 51.7 
 64.4 
 64.4 
 57.3 
 
 56.6 
 51.7 
 47.7 
 46.4 
 49.0 
 
 50.4 
 50.4 
 79.6 
 76.5 
 82.9 
 
 74.9 
 90.9 
 76.5 
 64.4 
 51.7 
 
 73.4 
 91.7 
 67.4 
 89.3 
 61.5 
 76.5 
 
 79.6 
 56.6 
 50.4 
 64.4 
 58.7 
 
 76.5 
 70.3 
 55.8 
 81.2 
 78.0 
 
 58.7 
 53.1 
 49.0 
 46.4 
 45.1 
 
 46.4 
 46.4 
 46.4 
 78.0 
 60.8 
 
 78.0 
 74.9 
 81.2 
 78.0 
 51.7 
 
 46.4 
 45.1 
 43.8 
 58.7 
 76.5 
 
 86.0 
 
 2 
 
 92.5 
 
 3 
 
 81.2 
 
 4 
 
 60.1 
 
 5 
 
 84.5 
 
 6 
 
 73.4 
 
 7 
 
 60.1 
 
 8 
 
 70.3 
 
 9 
 
 70.3 
 
 10 
 
 65.9 
 
 11 
 
 64.4 
 
 12 
 
 51.7 
 
 13 
 
 47.7 
 
 14 
 
 50.4 
 
 15 
 
 50.4 
 
 16 
 
 73.4 
 
 17 
 
 53.1 
 
 18 
 
 46.4 
 
 19 
 
 46.4 
 
 20 
 
 70.3 
 
 21 
 
 76.5 
 
 22 
 
 90.9 
 
 23 
 
 94.2 
 
 24 
 
 95.8 
 
 25 
 
 95.8 
 
 26 
 
 94.2 
 
 27 
 
 81.2 
 
 28 
 
 71.9 
 
 29 
 
 63.0 
 
 30 
 
 58.7 
 
 31 
 
 60.1 
 
 
 
 Note.— Discharge computed from Francis's formula, Q=3,33 (L— 2 H) H* when L=12 feet. 
 
ISLAND OF KAUAI. 53 
 
 Monthly discharge of Olokele ditch at weir near Waimea, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 January 
 
 82.9 
 94.2 
 92.5 
 92.5 
 94.2 
 89.3 
 89.3 
 92.5 
 92.5 
 91.7 
 81.2 
 95.8 
 
 53.1 
 46.4 
 50.4 
 50.4 
 46.4 
 46.4 
 46.4 
 43.8 
 41.2 
 46.4 
 43.8 
 46.4 
 
 62.8 
 59.3 
 69.8 
 66.2 
 65.1 
 59.3 
 63.7 
 61.1 
 59.0 
 64.6 
 61.2 
 70.3 
 
 3,860 
 
 February 
 
 3,420 
 
 March 
 
 4,290 
 
 
 3,940 
 4,000 
 3,530 
 
 May 
 
 
 July 
 
 3,920 
 
 
 3,760 
 
 September 
 
 3,510 
 
 October 
 
 3,970 
 
 November 
 
 3,640 
 
 December 
 
 4,320 
 
 
 
 The year 
 
 95.8 
 
 41.2 
 
 63.6 
 
 46, 000 
 
 
 
 POOWAIOMAHAIHAI DITCH NEAR WAIMEA, KAUAI. 
 
 Location. — About 2 miles northeast of Waimea, 250 feet below intake and 110 feet 
 
 below bridge station on Makaweli River. 
 Records available.— October 27, 1911, to December 31, 1912. 
 Gage.— A vertical staff gage spiked to tree on left bank of ditch; read at noon each 
 
 day. 
 Channel. — Permanent. 
 
 Discharge measurements. — Made from timber bridge 15 feet above gage. 
 Accuracy. — Good . 
 
 Discharge measurements of Poowaiomahaihai ditch near Waimea, Kauai, in 1912. 
 [Hydrographer, W. V. Hardy.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 4 
 
 1.12 
 1.58 
 1.12 
 1.86 
 
 9.17 
 12.4 
 
 5.62 
 14.7 
 
 Dec. 3 
 
 3.05 
 1.36 
 1.21 
 
 47.3 
 
 July 14 
 
 4 
 
 10 
 
 7.23 
 
 Sept. 30 
 
 5.52 
 
 Nov. 30 
 
 
 
 
 
 Daily gage height, in feet, of Poowaiomahaihai ditch near Waimea, Kauai, for 1912. 
 [Taguchi Umeichi, observer.] 
 
 Day. 
 
 1. 
 2. 
 3. 
 4. 
 5. 
 
 6. 
 
 7. 
 8. 
 9. 
 10. 
 
 11. 
 12. 
 13 
 14. 
 15. 
 
 16 
 17 
 
 18. 
 19 
 20 
 
 Jan. 
 
 1.20 
 1.21 
 1.19 
 1.19 
 1.20 
 
 1.18 
 1.17 
 1.20 
 1.21 
 1.30 
 
 1.22 
 1.20 
 1.20 
 1.24 
 1.10 
 
 1.00 
 1.10 
 1.25 
 1.15 
 1.12 
 
 Feb. 
 
 1.00 
 
 1.20 
 1.21 
 
 1.10 
 
 .99 
 
 1.08 
 
 1.00 
 
 1.08 
 1.12 
 1.08 
 1.08 
 
 .98 
 
 Mar. 
 
 0.99 
 1.19 
 1.20 
 1.10 
 1.29 
 
 1.35 
 1.20 
 1.10 
 1.40 
 1.52 
 
 1.78 
 1.65 
 1.60 
 1.53 
 1.50 
 
 1.48 
 1.35 
 1.30 
 1.27 
 1.23 
 
 Apr. 
 
 0.90 
 .80 
 .80 
 .80 
 
 .78 
 
 .90 
 1.50 
 1.00 
 L.40 
 LOO 
 
 .90 
 .90 
 
 1.10 
 
 1.00 
 
 .90 
 
 .90 
 
 May. 
 
 0.90 
 1.00 
 .90 
 1.10 
 1.20 
 
 1.10 
 1.00 
 
 .90 
 1.20 
 
 .90 
 
 .90 
 
 .80 
 
 .70 
 
 1.10 
 
 1.10 
 
 1.00 
 .90 
 .90 
 
 June. 
 
 0.80 
 
 .70 
 
 .70 
 
 1.20 
 
 1.00 
 
 .80 
 .70 
 .70 
 .70 
 .70 
 
 1.20 
 1.10 
 1.00 
 
 .80 
 
 July. 
 
 1.20 
 1.00 
 1.00 
 1.10 
 1.20 
 
 .90 
 .90 
 1.00 
 .90 
 .90 
 
 1.50 
 1.40 
 2.30 
 1.57 
 1.20 
 
 1.10 
 
 1.10 
 
 1.00 
 
 .90 
 
 .80 
 
 Aug. 
 
 1.00 
 .90 
 .80 
 .80 
 
 1.00 
 
 1.20 
 1.00 
 1.10 
 1.10 
 1.20 
 
 1.20 
 1.10 
 1.00 
 1.10 
 1.10 
 
 1.20 
 1.20 
 1.20 
 1.20 
 1.00 
 
 Sept. 
 
 1.00 
 .90 
 1.00 
 1.60 
 1.50 
 
 1.20 
 1.20 
 1.00 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.00 
 1.00 
 
 Oct. 
 
 1.10 
 1.10 
 1.60 
 1.30 
 1.20 
 
 1.10 
 1.10 
 1.10 
 1.00 
 1.00 
 
 1.00 
 1.30 
 1.25 
 1.30 
 1.20 
 
 Nov. 
 
 1.20 
 1.10 
 1.40 
 1.30 
 1.20 
 
 1.42 
 1.30 
 1.60 
 1.50 
 1.20 
 
 1.20 
 1.10 
 1.10 
 1.10 
 1.00 
 
 1.00 
 1.10 
 1.00 
 1.10 
 1.70 
 
 Dec. 
 
 3.10 
 3.40 
 3.22 
 1.40 
 1.30 
 
 1.32 
 1.20 
 1.30 
 
 1.20 
 1.10 
 1.10 
 1.00 
 1.00 
 
 .90 
 .90 
 .90 
 .90 
 1.30 
 
54 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Poowaiomahaihai ditch near Waimea, Kauai, for 1912 — Con. 
 Day. 
 
 21 
 22 
 23 
 21 
 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 1.11 
 
 0.97 
 
 1.19 
 
 0.90 
 
 1.30 
 
 0.70 
 
 0.80 
 
 1.00 
 
 0.90 
 
 1.20 
 
 1.40 
 
 1.10 
 
 1.20 
 
 1.14 
 
 1.00 
 
 1.20 
 
 .70 
 
 .80 
 
 1.30 
 
 .80 
 
 1.20 
 
 1.20 
 
 1.00 
 
 1.40 
 
 1.12 
 
 .90 
 
 1.10 
 
 .90 
 
 1.20 
 
 1.30 
 
 1.10 
 
 1.40 
 
 1.50 
 
 1.10 
 
 1.23 
 
 1.10 
 
 1.10 
 
 .80 
 
 .80 
 
 1.10 
 
 1.20 
 
 1.10 
 
 1.30 
 
 1.20 
 
 1.30 
 
 1.10 
 
 .90 
 
 1.00 
 
 .80 
 
 1.30 
 
 1.00 
 
 1.20 
 
 1.10 
 
 1.20 
 
 1.10 
 
 1.25 
 
 1.09 
 
 .95 
 
 1.00 
 
 .70 
 
 1.10 
 
 .90 
 
 1.50 
 
 1.00 
 
 1.20 
 
 1.10 
 
 1.00 
 
 .98 
 
 .92 
 
 .90 
 
 .80 
 
 1.00 
 
 .90 
 
 1.40 
 
 1.20 
 
 1.60 
 
 1.20 
 
 .98 
 
 .97 
 
 .92 
 
 .90 
 
 1.20 
 
 .80 
 
 .90 
 
 1.40 
 
 1.12 
 
 1.40 
 
 1.20 
 
 .97 
 
 .97 
 
 .83 
 
 .80 
 
 1.00 
 
 1.00 
 
 .90 
 
 1.30 
 
 1.10 
 
 1.30 
 
 1.30 
 
 .97 
 
 
 .81 
 
 .70 
 
 .90 
 
 .90 
 
 .80 
 
 1.20 
 
 1.10 
 
 1.20 
 
 1.58 
 
 1.00 
 
 
 .80 
 
 
 .90 
 
 
 .80 
 
 1.30 
 
 
 1.20 
 
 
 Daily discharge, in second-feet, of 
 
 Poowaiomahaihai ditch near W 
 
 aimea, 
 
 Kauai, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 6.2 
 6.3 
 6.1 
 6.1 
 6.2 
 
 6.0 
 5.9 
 6.2 
 6.3 
 7.3 
 
 6.4 
 6.2 
 6.2 
 6.6 
 5.2 
 
 4.3 
 5.2 
 6.8 
 
 5.7 
 5.4 
 
 5.3 
 5.2 
 4.3 
 5.2 
 7.3 
 
 6.8 
 4.3 
 4.1 
 4.1 
 4.1 
 4.3 
 
 4.3 
 4.1 
 4.1 
 6.2 
 6.3 
 
 5.2 
 4.2 
 5.0 
 4.3 
 4.1 
 
 5.0 
 5.4 
 5.0 
 5.0 
 4.2 
 
 4.1 
 4.1 
 4.2 
 4.1 
 4.2 
 
 4.1 
 6.2 
 8.5 
 6.5 
 5.2 
 
 5.1 
 4.1 
 4.1 
 4.1 
 
 4.2 
 6.1 
 6.2 
 5.2 
 7.2 
 
 7.9 
 6.2 
 5.2 
 
 8.5 
 10.1 
 
 14.2 
 12.0 
 11.2 
 10.2 
 9.8 
 
 9.5 
 7.9 
 7.3 
 7.0 
 6.5 
 
 6.1 
 5.6 
 5.4 
 5.2 
 3.5 
 
 3.9 
 3.7 
 3.7 
 3.0 
 2.9 
 2.8 
 
 3.5 
 2.8 
 2.8 
 
 2.8 
 2.7 
 
 3.5 
 9.8 
 4.3 
 
 8.5 
 4.3 
 
 3.5 
 3.5 
 3.4 
 3.4 
 
 2.8 
 
 2.8 
 5.2 
 4.3 
 3.5 
 3.5 
 
 3.5 
 4.3 
 3.5 
 5.2 
 4.3 
 
 4.3 
 3.5 
 3.5 
 2.8 
 2.3 
 
 3.5 
 4.3 
 3.5 
 5.2 
 6.2 
 
 5.2 
 4.3 
 3.5 
 6.2 
 3.5 
 
 3.5 
 2.8 
 2.3 
 5.2 
 5.2 
 
 4.3 
 3.5 
 3.5 
 2.8 
 2.3 
 
 7.3 
 6.2 
 
 5.2 
 
 2.8 
 2.8 
 
 2.3 
 2.8 
 6.2 
 4.3 
 3.5 
 3.5 
 
 2.8 
 2.3 
 2.3 
 6.2 
 4.3 
 
 2.8 
 2.3 
 2.3 
 2.3 
 2.3 
 
 2.8 
 2.8 
 6.2 
 5.2 
 4.3 
 
 2.8 
 2.8 
 2.8 
 2.8 
 2.8 
 
 2.3 
 2.3 
 3.5 
 
 2.8 
 7.3 
 
 5.2 
 4.3 
 2.8 
 4.3 
 3.5 
 
 6.2 
 4.3 
 4.3 
 5.2 
 6.2 
 
 3.5 
 3.5 
 4.3 
 3.5 
 3.5 
 
 9.8 
 8.5 
 25.0 
 10.8 
 6.2 
 
 5.2 
 5.2 
 4.3 
 3.5 
 2.8 
 
 2.8 
 2.8 
 6.2 
 5.2 
 4.3 
 
 3.5 
 3.5 
 3.5 
 
 3.5 
 
 2.8 
 2.8 
 
 4.3 
 3.5 
 
 2.8 
 2.8 
 4.3 
 
 6.2 
 4.3 
 5.2 
 5.2 
 6.2 
 
 6.2 
 5.2 
 4.3 
 5.2 
 5.2 
 
 6.2 
 6.2 
 6.2 
 6.2 
 4.3 
 
 4.3 
 7.3 
 7.3 
 6.2 
 6.2 
 
 9.8 
 8.5 
 8.5 
 7.3 
 6.2 
 7.3 
 
 4.3 
 
 3.5 
 
 4.3 
 
 11.2 
 
 9.8 
 
 8.5 
 7.3 
 7.3 
 6.2 
 7.3 
 
 6.2 
 6.2 
 4.3 
 5.2 
 5.2 
 
 5.2 
 5.2 
 5.2 
 4.3 
 4.3 
 
 3.5 
 
 2.8 
 5.2 
 5.2 
 5.2 
 
 4.3 
 6.2 
 
 5.4 
 5.2 
 5.2 
 
 5.2 
 5.2 
 11.2 
 7.3 
 6.2 
 
 5.2 
 5.2 
 5.2 
 4.3 
 4.3 
 
 4.3 
 5.2 
 5.2 
 6.2 
 6.2 
 
 4.3 
 7.3 
 6.8 
 7.3 
 6.2 
 
 6.2 
 6.2 
 8.5 
 7.3 
 6.2 
 
 6.2 
 11.2 
 
 8.5 
 7.3 
 6.2 
 6.2 
 
 6.2 
 5.2 
 8.5 
 7.3 
 6.2 
 
 8.8 
 7.3 
 11.2 
 9.8 
 6.2 
 
 6.2 
 5.2 
 5.2 
 5.2 
 4.3 
 
 4.3 
 5.2 
 4.3 
 5.2 
 12.8 
 
 8.5 
 6.2 
 9.8 
 6.2 
 5.2 
 
 5.2 
 6.2 
 
 6.2 
 
 7.3 
 
 10.8 
 
 49.0 
 
 2 
 
 60.0 
 
 3 
 
 52.8 
 
 4 
 
 8.5 
 
 5 
 
 7.3 
 
 6 
 
 7.5 
 
 7 
 
 6.2 
 
 8 
 
 7.3 
 
 9 
 
 6.2 
 
 10 
 
 6.2 
 
 11 
 
 6.2 
 
 12 
 
 5.2 
 
 13 
 
 5.2 
 
 14 
 
 4.3 
 
 15 
 
 4.3 
 
 16 
 
 3.5 
 
 17 
 
 3.5 
 
 18 
 
 3.5 
 
 19 
 
 3.5 
 
 20 
 
 7.3 
 
 21 
 
 36.0 
 
 22 
 
 27.0 
 
 23 
 
 8.5 
 
 24 
 
 9.8 
 
 25 
 
 11.2 
 
 26.. 
 
 7.3 
 
 27 
 
 7.3 
 
 28 
 
 29 
 
 7.3 
 6.2 
 
 30 
 
 6.2 
 
 31 
 
 4.3 
 
 
 
 Monthly discharge of Poowaiomahaihai ditch near Waimea 
 
 , Kauai, 
 
 for 1912. 
 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 
 7.3 
 
 8.5 
 
 14.2 
 
 9.8 
 
 7.3 
 
 7.3 
 
 25.0 
 
 9.8 
 
 11.2 
 
 11.2 
 
 12.8 
 
 60.0 
 
 4.1 
 4.1 
 2.8 
 2.3 
 2.3 
 2.3 
 2.8 
 2.8 
 2.8 
 4.3 
 4.3 
 3.5 
 
 5.66 
 4.86 
 6.72 
 3.94 
 4.12 
 3.45 
 5.38 
 5.77 
 5.64 
 6.40 
 6.87 
 12.50 
 
 348 
 280 
 413 
 234 
 253 
 205 
 331 
 355 
 336 
 394 
 409 
 769 
 
 C. 
 
 
 C. 
 
 
 c. 
 
 
 c. 
 
 
 c. 
 
 
 c. 
 
 July 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 A. 
 
 
 A. 
 
 
 
 
 60.0 
 
 2.3 
 
 5.96 
 
 4,330 
 
 
 
 
ISLAND OF KAUAI. 
 
 55 
 
 HANAPEPE RIVER BASIN. 
 EAST BRANCH OF HANAPEPE RIVER i AT HANAPEPE FALLS, NEAR ELEELE, KAUAI. 
 
 Location. — About 8 miles north of Eleele and a short distance below Hanapepe Falls. 
 Records available. — November 22, 1911, to December 31, 1912. 
 Gage. — Vertical staff; datum unchanged. 
 
 Discharge measurements. — Made by wading on crest of masonry dam; crest 3 feet 
 wide and 75 feet long. 
 
 Daily gage height, in feet, of East Branch of Hanapepe River at Hanapepe Falls, near 
 
 Eleele, Kauai, for 1912. 
 
 
 
 
 
 [S.W. 
 
 Holmer 
 
 , observer.] 
 
 
 
 
 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 
 
 
 
 
 2 
 
 
 
 
 
 
 
 
 
 0.20 
 .05 
 
 
 
 0.85 
 
 3 
 
 
 
 
 
 
 
 
 
 
 
 1.18 
 
 4 
 
 
 
 
 0.02 
 
 0.55 
 
 0.03 
 
 
 
 
 
 
 5 
 
 0.35 
 
 
 
 
 
 
 
 0.16 
 
 .05 
 
 6 
 
 
 
 
 
 
 
 
 .22 
 
 
 .01 
 
 7 
 
 
 
 
 
 
 
 
 0.02 
 
 
 
 
 g 
 
 .10 
 .10 
 
 
 
 .25 
 
 .20 
 .50 
 
 .05 
 
 
 
 
 
 .45 
 .05 
 
 
 9 
 
 
 0.10 
 
 
 
 .28 
 
 
 
 0.5 
 
 10 
 
 
 
 
 
 
 
 11 . 
 
 
 
 1.00 
 .35 
 .60 
 .22 
 .15 
 
 .05 
 
 
 
 0.40 
 
 
 
 
 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 13 
 
 
 
 
 
 .32 
 
 .20 
 
 
 
 
 
 
 14 
 
 .18 
 
 
 
 .13 
 .09 
 
 .50 
 .02 
 
 
 
 
 
 15 
 
 .03 
 
 .34 
 
 .17 
 .42 
 .10 
 
 .05 
 
 
 
 
 
 16 
 
 
 
 .12 
 
 
 
 
 17 
 
 
 
 
 
 
 0.15 
 
 
 
 18 
 
 
 
 
 
 
 
 
 
 .05 
 
 
 19 
 
 
 
 
 
 
 .15 
 
 
 
 .24 
 
 
 20 
 
 
 
 
 .25 
 
 
 
 
 
 
 21 
 
 
 
 
 
 .04 
 
 
 
 
 .38 
 
 """."38" 
 
 .20 
 
 .95 
 
 22 
 
 
 
 
 
 .02 
 .05 
 .22 
 
 
 .01 
 
 
 
 23 
 
 .22 
 
 .16 
 .20 
 
 .20 
 
 0.50 
 
 
 
 
 
 
 
 .70 
 
 24 
 
 
 
 
 .10 
 
 
 
 
 .76 
 
 25 
 
 
 
 .70 
 
 
 
 
 
 
 26 
 
 
 
 
 
 .02 
 
 
 
 .70 
 
 
 .20 
 
 
 
 
 
 .70 
 .05 
 
 
 .05 
 
 
 .10 
 
 28... 
 
 
 
 
 
 
 
 .05 
 
 
 .06 
 
 
 
 
 
 
 
 
 
 30 
 
 
 
 
 
 
 
 .65 
 .13 
 
 
 .02 
 .05 
 
 .20 
 
 .02 
 
 
 
 
 
 
 
 
 .03 
 
 
 
 
 
 
 
 
 
 
 Note 
 heights on week days indicates that all the water was diverted at the dam 
 
 Gage heights represent water flowing over dam; station not visited Sundays, but lack of gage 
 die: 
 
 HANAPEPE RIVER AT KOTTLA, NEAR ELEELE, KAUAI. 
 
 Location. — About 5 miles north of Eleele. 
 
 Records available.— August 18, 1910, to December 31, 1912. 
 
 Drainage area. — 12.63 square miles. 
 
 Gage. — Friez automatic register; datum unchanged. 
 
 Channel. — Fairly permanent. 
 
 Discharge measurements. — Made from cable and car. 
 
 Accuracy. — Records good. 
 
 Discharge measurements of Hanapepe River at Koula, near Eleele, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 6 
 
 W. V. Hardy 
 
 Feet. 
 1.06 
 1.20 
 
 Sec.-ft. 
 17.8 
 
 Dec. 16 
 
 do ..; 
 
 20.9 
 
 
 
 
 i Described in Water-Supply Paper 318, p. 77, as Hanapepe River at Hanapepe Falls, near Eleele 
 Kauai. 
 
56 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Hanapepe River at Koula, near Eleele, Kauai, for 1912. 
 
 [S. W. Holmer, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.10 
 1.12 
 1.18 
 1.25 
 1.67 
 
 1.21 
 1.20 
 1.52 
 1.47 
 1.21 
 
 1.15 
 1.19 
 1.49 
 1.64 
 1.17 
 
 1.15 
 1.10 
 1.09 
 1.07 
 1.14 
 
 1.05 
 1.05 
 1.50 
 1.52 
 1.30 
 
 1.35 
 1.35 
 1.33 
 1.09 
 1.18 
 1.18 
 
 1.05 
 1.05 
 1.05 
 1.07 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.08 
 1.31 
 2.55 
 1.88 
 1.25 
 
 1.13 
 1.02 
 1.00 
 1.06 
 
 1.07 
 1.08 
 1.20 
 1.07 
 1.00 
 
 1.05 
 1.15 
 1.06 
 1.91 
 1.57 
 
 3.00 
 
 2.35 
 2.80 
 1.90 
 1.50 
 
 1.27 
 1.25 
 1.35 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.08 
 1.12 
 1.55 
 
 1.13 
 1.05 
 1.06 
 1.05 
 1.05 
 1.07 
 
 1.05 
 1.00 
 1.00 
 1.20 
 1.10 
 
 1.49 
 2.70 
 1.75 
 2.27 
 , 1.47 
 
 1.35 
 1.15 
 1.11 
 1.20 
 1.08 
 
 1.18 
 1.60 
 1.28 
 1.05 
 1.42 
 
 1.06 
 1.18 
 1.27 
 1.10 
 1.50 
 
 1.31 
 1.15 
 1.10 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.46 
 1.64 
 1.50 
 
 1.14 
 1.07 
 1.36 
 1.07 
 1.06 
 
 1.08 
 1.05 
 1.07 
 1.46 
 1.80 
 
 1.22 
 1.08 
 1.05 
 1.08 
 1.07 
 
 1.14 
 1.34 
 1.37 
 1.55 
 1.24 
 
 1.18 
 1.81 
 
 2.82 
 2.07 
 1.52 
 1.08 
 
 1.15 
 1.10 
 1.11 
 1.36 
 1.38 
 
 1.21 
 1.11 
 1.13 
 1.21 
 1.07 
 
 1.05 
 1.06 
 1.65 
 1.37 
 
 1.28 
 
 1.20 
 1.08 
 1.18 
 1.34 
 1.12 
 
 1.57 
 1.32 
 1.25 
 1.78 
 1.23 
 
 1.17 
 1.22 
 1.11 
 1.09 
 1.05 
 
 1.07 
 1.05 
 1.04- 
 1.02 
 1.18 
 
 1.11 
 1.34 
 1.04 
 1.10 
 1.38 
 
 1.92 
 1.21 
 2.74 
 2.48 
 2.05 
 
 1.52 
 2.44 
 1.58 
 1.36 
 1.20 
 
 1.37 
 1.04 
 1.03 
 1.54 
 1.19 
 
 1.39 
 1.16 
 1.12 
 1.19 
 1.18 
 1.22 
 
 1.19 
 1.07 
 1.09 
 1.23 
 1.21 
 
 1.19 
 1.22 
 1.49 
 1.55 
 1.11 
 
 1.10 
 1.06 
 1.04 
 2.19 
 1.55 
 
 1.19 
 1.10 
 1.05 
 1.07 
 1.07 
 
 1.14 
 1.38 
 1.24 
 1.64 
 1.38 
 
 1.55 
 2.58 
 1.58 
 1.47 
 2.50 
 1.81 
 
 1.82 
 1.81 
 1.71 
 1.40 
 1.28 
 
 2.48 
 1.61 
 1.42 
 1.34 
 
 1.18 
 
 1.24 
 1.30 
 1.19 
 1.17 
 1.14 
 
 1.19 
 1.18 
 1.04 
 1.14 
 1.11 
 
 1.12 
 1.29 
 1.13 
 1.08 
 1.06 
 
 1.04 
 1.03 
 1.07 
 1.15 
 1.19 
 
 1.23 
 1.12 
 1.38 
 1.10 
 1.19 
 
 1.20 
 1.19 
 1.37 
 1.19 
 1.20 
 
 1.13 
 1.17 
 1.12 
 1.13 
 
 1.11 
 
 1.12 
 1.41 
 1.42 
 1.98 
 1.52 
 
 2.21 
 1.68 
 1.57 
 1.21 
 1.59 
 
 2.53 
 1.75 
 1.81 
 1.56 
 1.48 
 1.52 
 
 1.29 
 1.18 
 1.16 
 1.15 
 1.61 
 
 1.26 
 1.20 
 1.96 
 2.03 
 1.31 
 
 1.18 
 1.12 
 1.10 
 1.09 
 1.10 
 
 1.10 
 1.09 
 1.30 
 1.29 
 1.16 
 
 1.36 
 1.51 
 1.69 
 1.25 
 1.17 
 
 1.10 
 1.07 
 1.09 
 1.41 
 1.42 
 
 1 71 
 
 2. 
 
 4 18 
 
 3 
 
 4 70 
 
 4 
 
 2.38 
 
 5 
 
 1.61 
 
 6 
 
 1 39 
 
 7 
 
 1 29 
 
 8 
 
 2.05 
 
 9 
 
 1.50 
 
 10 
 
 1.31 
 
 11 
 
 1.22 
 
 12 
 
 1 10 
 
 13 
 
 1 12 
 
 14 
 
 1.12 
 
 
 1.09 
 
 
 1.29 
 
 17 
 
 1 10 
 
 
 1 12 
 
 19 
 
 1.15 
 
 20 
 
 1.83 
 
 21 
 
 2.79 
 
 22 
 
 2.98 
 
 23 
 
 2 82 
 
 24 
 
 3 81 
 
 
 2.87 
 
 
 1.89 
 
 27 
 
 1 61 
 
 
 1.44 
 1 35 
 
 29 
 
 
 1 29 
 
 31 
 
 1.27 
 
 
 
 Daily discharge, in second-feet, of Hanapepe River at Koula, near Eleele, Kauai, for 1912. 
 
 Day. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28. 
 29. 
 30. 
 31. 
 
 Jan. 
 
 18.0 
 19.0 
 22.0 
 26.5 
 68.1 
 
 23.7 
 
 23.0 
 50.2 
 45.0 
 23.7 
 
 20.5 
 22.5 
 47.0 
 64.2 
 21.5 
 
 20.5 
 18.0 
 17.5 
 16.5 
 20.0 
 
 15.5 
 15.5 
 48.0 
 50.2 
 30.0 
 
 34.0 
 34.0 
 32.4 
 17.5 
 22.0 
 22.0 
 
 Feb. 
 
 15.5 
 15.5 
 15.5 
 16.5 
 13.0 
 
 13.0 
 13.0 
 13.0 
 13.0 
 13.0 
 
 13.0 
 13.0 
 13.0 
 13.0 
 13.0 
 
 13.0 
 13.0 
 13.0 
 13.0 
 13.0 
 
 17.0 
 30.8 
 225.0 
 100.0 
 26.5 
 
 19.5 
 14.0 
 13.0 
 16.0 
 
 Mar 
 
 16.5 
 17.0 
 23.0 
 16.5 
 13.0 
 
 15.5 
 20.5 
 16.0 
 105.0 
 55.7 
 
 320.0 
 186.0 
 277.0 
 103.0 
 48.0 
 
 27.9 
 26.5 
 34.0 
 18.0 
 18.0 
 
 18.0 
 18.0 
 17.0 
 19.0 
 53.5 
 
 19.5 
 15.5 
 16.0 
 15.5 
 15.5 
 16.5 
 
 Apr. 
 
 15.5 
 13.0 
 13.0 
 23.0 
 18.0 
 
 47.0 
 256.0 
 
 79.5 
 170.0 
 
 45.0 
 
 17.0 
 
 22.0 
 59.0 
 28.6 
 15.5 
 40.0 
 
 16.0 
 22.0 
 27.9 
 18.0 
 48.0 
 
 30.8 
 20.5 
 18.0 
 15.5 
 15.5 
 
 May. 
 
 15.5 
 15.5 
 44.0 
 64.2 
 48.0 
 
 20.0 
 16.5 
 34.8 
 16.5 
 16.0 
 
 17.0 
 15.5 
 16.5 
 44.0 
 87.0 
 
 24.4 
 17.0 
 15.5 
 17.0 
 16.5 
 
 20.0 
 33.2 
 35.6 
 53.5 
 25.8 
 
 22.0 
 
 88.6 
 281.0 
 133. 
 50.2 
 17.0 
 
 June. 
 
 20.5 
 18.0 
 18.5 
 34.8 
 36.4 
 
 23.7 
 
 18.5 
 19.5 
 23.7 
 16.5 
 
 15.5 
 16.0 
 65.5 
 35.6 
 
 23.0 
 17.0 
 22.0 
 33.2 
 19.0 
 
 55.7 
 31.6 
 26.5 
 84.0 
 25.1 
 
 21.5 
 
 24.4 
 18.5 
 17.5 
 15.5 
 
 July. 
 
 16.5 
 15.5 
 15.0 
 14.0 
 22.0 
 
 18.5 
 33.2 
 15.0 
 18.0 
 36.4 
 
 106.0 
 23.7 
 264.0 
 211.0 
 129.0 
 
 50.2 
 203.0 
 56.8 
 34.8 
 23.0 
 
 35.6 
 15.0 
 14.5 
 52.4 
 22.5 
 
 37.2 
 21.0 
 19.0' 
 22.5 
 22.0 
 24.4 
 
 Aug. 
 
 22.5 
 16.5 
 17.5 
 25.1 
 23.7 
 
 22.5 
 24.4 
 47.0 
 53.5 
 18.5 
 
 18.0 
 16.0 
 15.0 
 155.0 
 53.5 
 
 22.5 
 
 18.0 
 15.5 
 16.5 
 16.5 
 
 20.0 
 36.4 
 25.8 
 64.2 
 36.4 
 
 53.5 
 231.0 
 56.8 
 45.0 
 215.0 
 
 Sept. 
 
 90.2 
 88.6 
 73.5 
 38.0 
 28.6 
 
 211.0 
 60.3 
 40.0 
 33.2 
 22.0 
 
 25.8 
 30.0 
 22.5 
 21.5 
 20.0 
 
 22.5 
 22.0 
 15.0 
 20.0 
 18.5 
 
 19.0 
 29.3 
 19.5 
 17.0 
 16.0 
 
 15.0 
 14.5 
 16.5 
 20.0 
 22.5 
 
 Oct. 
 
 25.1 
 19.0 
 36.4 
 18.0 
 22.5 
 
 23.0 
 22.5 
 35.6 
 22.5 
 23.0 
 
 19.5 
 21.5 
 19.0 
 19.5 
 18.5 
 
 19.0 
 39.0 
 40.0 
 117.0 
 50.2 
 
 159.0 
 69.4 
 55.7 
 23.7 
 57.9 
 
 221.0 
 79.5 
 88.6 
 54.6 
 46.0 
 50.2 
 
 Nov. 
 
 29.3 
 22.0 
 21.0 
 20.5 
 60.3 
 
 27.2 
 
 23.0 
 113.0 
 125.0 
 
 30.8 
 
 22.0 
 19.0 
 18.0 
 17.5 
 18.0 
 
 18.0 
 17.5 
 30.0 
 29.3 
 21.0 
 
 34.8 
 49.1 
 70.7 
 26.5 
 21.5 
 
 18.0 
 16.5 
 17.5 
 39.0 
 40.2 
 
 Dec. 
 
 73.5 
 581.0 
 701.0 
 191.0 
 
 60.3 
 
 37.2 
 
 29.3 
 129.0 
 48.0 
 30.8 
 
 24.4 
 18.0 
 19.0 
 19.0 
 17.5 
 
 29.3 
 
 18.0 
 19.0 
 20.5 
 91.8 
 
 275.0 
 
 292 
 
 101.0 
 60.3 
 42.0 
 34.0 
 29.3 
 27.9 
 
ISLAND OF KAUAI. 57 
 
 Monthly discharge of Hanapepe River near Eleele, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 
 68.1 
 225.0 
 320.0 
 256.0 
 281.0 
 
 84.0 
 264.0 
 231.0 
 211.0 
 221.0 
 125.0 
 701.0 
 
 15.5 
 13.0 
 13.0 
 13.0 
 15.5 
 15.5 
 14.0 
 15.0 
 14.5 
 18.0 
 16.5 
 17.5 
 
 29.3 
 25.3 
 51.0 
 39.7 
 42.6 
 27.5 
 51.3 
 48.1 
 36.4 
 48.9 
 33-9 
 133.0 
 
 1,800 
 1,460 
 3,140 
 2,360 
 2,620 
 1.640 
 3, 150 
 2,960 
 2.170 
 3,010 
 2,020 
 8,180 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 July , 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 
 
 701.0 
 
 13.0 
 
 47.5 
 
 34, 500 
 
 
 
 
 HANAPEPE DITCH AT HANAPEPE FALLS, NEAR ELEELE, KATJAI. 
 
 Location. — About 8 miles northeast of Eleele, near Hanapepe Falls, and 400 feet 
 
 below the intake. 
 Records available. — November 22, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read onCe daily (at irregular hour), except Sundays; datum 
 
 unchanged. 
 Channel. — Probably permanent. 
 Discharge measurements. — Measurements made from cross timber of flume 4 feet 
 
 above gage. 
 Accuracy. — Records good. 
 
 Discharge measurements of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 6 
 
 W. V. Hardy 
 
 Feet. 
 0.82 
 1.08 
 
 Sec.-ft. 
 10.5 
 
 Nov. 7 
 
 Larrison and Hardy 
 
 15.9 
 
 
 
 
 Daily gage height, in feet, of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai, for 
 
 1912. 
 
 [S. W. Holmer, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 -Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.90 
 .89 
 .89 
 
 "\*86" 
 
 .85 
 .85 
 .85 
 ,90 
 .86 
 
 '"".*84" 
 .83 
 .82 
 
 .81 
 
 .81 
 .83 
 
 '"'.'so" 
 
 .80 
 
 0.90 
 
 .85 
 
 """.'86' 
 .83 
 
 .82 
 
 .83 
 
 .90 
 
 1.33 
 
 ....... 
 
 1.69 
 1.43 
 1.55 
 1.24 
 1.20 
 
 1.17 
 
 "i.*24' 
 1.11 
 1.11 
 
 0.91 
 .88 
 
 .87 
 
 1.38 
 
 .92 
 
 .92 
 
 "i.~37* 
 1.32 
 1.26 
 
 1.23 
 1.14 
 1.06 
 
 '"i.'02' 
 
 1.02 
 1.10 
 1.10 
 .99 
 1.55 
 
 0.96 
 
 .97 
 
 1.20 
 
 1.60 
 
 1.04 
 1.08 
 1.14 
 1.10 
 1.02 
 
 1.00 
 
 "Oo" 
 
 1.45 
 1.44 
 
 1.16 
 1.04 
 1.01 
 
 "\*96" 
 
 1.15 
 
 ""i'08* 
 1.40 
 1.14 
 
 1.07 
 1.05 
 1.05 
 
 ""i.'oo' 
 
 .99 
 1.14 
 1.60 
 1.37 
 1.40 
 
 "i'65' 
 
 1.18 
 1.50 
 1.15 
 
 1.05 
 
 .97 
 .94 
 
 1.00 
 .98 
 .95 
 
 "i.'so' 
 
 1.43 
 1.34 
 1.28 
 
 1.52 
 1.20 
 
 "i'26' 
 
 - 1.17 
 
 1.12 
 1.15 
 1.10 
 1.05 
 
 1.46 
 1.09 
 1.00 
 1.32 
 1.07 
 
 1.28 
 .95 
 
 1.18 
 .98 
 .95 
 
 "lA2 
 1.22 
 1.02 
 1.00 
 
 .94 
 1.07 
 
 ""i.'io' 
 
 .92 
 
 .94 
 1.42 
 1.00 
 1.50 
 
 1.27 
 1.16 
 
 "".'95" 
 1.48 
 
 1.21 
 1.06 
 1.62 
 1.43 
 
 1.14 
 1.08 
 1.02 
 1.00 
 .99 
 
 .95 
 
 '"i."42" 
 1.10 
 1.02 
 
 
 2.... 5 
 
 3 
 
 1.10 
 1.10 
 1.07 
 1.35 
 
 1.13 
 
 1.82 
 1.37 
 
 4 
 
 
 5 
 
 1.20 
 .91 
 
 ""."92.' 
 
 1.14 
 1.22 
 
 1.60 
 1.16 
 1.30 
 
 "i."20" 
 
 1.17 
 1.24 
 1.14 
 1.12 
 1.27 
 
 1.23 
 
 1.09 
 1.39 
 1.37 
 1.54 
 1.15 
 
 "i"05* 
 
 1.04 
 1.62 
 1.40 
 
 1.20 
 1.01 
 
 '"htt 
 
 1.10 
 
 1.40 
 
 6. .. 
 
 7 
 
 1.35 
 1.32 
 
 8 
 
 1.25 
 1.25 
 1.18 
 
 1.10 
 1.10 
 1.10 
 .70 
 1.05 
 
 1.02 
 1.01 
 1.00 
 .98 
 1.15 
 
 
 9 
 
 10 
 
 1.42 
 1.33 
 
 11 
 
 1.20 
 
 12. 
 
 1.16 
 
 13 
 
 1.29 
 
 14 
 
 15 
 
 1.09 
 
 16 
 
 1.10 
 
 17 
 
 1.02 
 
 18 
 
 1.00 
 
 19.... 
 
 .98 
 
 20 
 
 1.28 
 
58 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai, 
 
 for 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 
 0.90 
 1.20 
 1.50 
 1.27 
 
 1.00 
 .91 
 
 .88 
 .87 
 
 1.11 
 
 1.05 
 
 .98 
 
 "\.2b 
 
 1.04 
 .96 
 .95 
 .93 
 .92 
 .94 
 
 "i'22' 
 1.37 
 
 1.05 
 1.67 
 
 1.32 
 1.15 
 
 "*i."6i" 
 
 .97 
 
 1.00 
 1.37 
 1.43 
 1.50 
 1.22 
 
 ""i'56' 
 1.43 
 1.28 
 1.28 
 1.20 
 
 1.42 
 1.25 
 
 "i.'33' 
 1.12 
 
 1.07 
 1.07 
 1.02 
 1.02 
 .97 
 
 1.10 
 
 1.30 
 1.10 
 
 1.38 
 1.10 
 
 "i.'05* 
 1.18 
 1.03 
 
 1.10 
 1.40 
 1.08 
 1.22 
 
 1.21 
 1.54 
 1.42 
 1.22 
 1.90 
 1.48 
 
 1.05 
 
 "".'99" 
 .96 
 .94 
 
 .92 
 
 .92 
 
 1.00 
 
 "l.'28" 
 
 1.60 
 1.38 
 1.30 
 1.13 
 1.11 
 
 1.68 
 
 "i.*43* 
 1.33 
 1.41 
 1.43 
 
 1.12 
 1.58 
 1.49 
 
 "i.'04" 
 
 1.00 
 
 .96 
 
 .94 
 
 1.15 
 
 1.50 
 
 1.84 
 
 22 
 
 0.95 
 
 1.34 
 
 .55 
 
 .14 
 
 .14 
 .14 
 
 
 23 
 
 1.40 
 
 24 
 
 1.45 
 
 25 
 
 
 26 
 
 1.28 
 
 27 
 
 1.22 
 
 28 
 
 1.22 
 
 29 
 
 .88 
 .86 
 .90 
 
 
 30 
 
 1.18 
 
 31 
 
 1.20 
 
 
 
 Daily discharge, in second-feet, of Hanapepe ditch at Hanapepe Falls, near Eleele,. Kauai, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 16.0 
 160 
 16.0 
 15.4 
 22.0 
 
 16.9 
 18.6 
 20.0 
 20.0 
 18.4 
 
 16.0 
 16.0 
 16.0 
 8.3 
 15.0 
 
 14.4 
 14.2 
 14.0 
 13.6 
 
 17.5 
 
 15.2 
 13.0 
 21.8 
 57.5 
 .9 
 
 .9 
 .9 
 10.4 
 11.6 
 11.2 
 12.0 
 
 12.0 
 11.8 
 11.8 
 11.5 
 11.2 
 
 11.0 
 11.0 
 11.0 
 12.0 
 11.2 
 
 11.0 
 10.8 
 10.6 
 10.4 
 10.2 
 
 10.2 
 10.6 
 10.3 
 10.0 
 10.0 
 
 12.0 
 19.0 
 25.0 
 20.4 
 17.2 
 
 14.0 
 12.2 
 11.6 
 11.4 
 
 12.0 
 11.0 
 11.1 
 11.2 
 10.6 
 
 10.4 
 10.6 
 12.0 
 21.6 
 
 25.7 
 
 29.8 
 23.6 
 26.5 
 19.8 
 19.0 
 
 18.1 
 19.4 
 19.8 
 16.3 
 16.3 
 
 16.3 
 15.0 
 13.6 
 16.8 
 20.0 
 
 14.8 
 13.2 
 13.0 
 12.6 
 12.4 
 12.8 
 
 12.2 
 11.6 
 11.4 
 22.6 
 12.4 
 
 12.4 
 17.4 
 22.4 
 21.4 
 20.2 
 
 19.6 
 17.2 
 15.2 
 14.8 
 14.4 
 
 14.4 
 16.0 
 16.0 
 13.8 
 26.5 
 
 23.0 
 19.4 
 22.4 
 15.0 
 29.4 
 
 21.4 
 17.5 
 15.8 
 14.2 
 13.4 
 
 13.2 
 13.4 
 19.0 
 28.0 
 21.4 
 
 14.8 
 15.6 
 17.2 
 16.0 
 14.4 
 
 14.0 
 16.5 
 19.0 
 24.0 
 23.8 
 
 17.8 
 14.8 
 14.2 
 13.7 
 13.2 
 
 14.0 
 22.4 
 23.6 
 25.0 
 19.4 
 
 22.2 
 
 25.0 
 23.6 
 20.6 
 20.6 
 19.0 
 
 17.5 
 16.6 
 15.6 
 23.0 
 17.2 
 
 15.4 
 15.0 
 15.0 
 14.5 
 14.0 
 
 13.8 
 17.2 
 28.0 
 22.4 
 23.0 
 
 19.0 
 15.0 
 18.4 
 25.0 
 17.5 
 
 23.4 
 20.0 
 20.8 
 21.6 
 16.6 
 
 15.4 
 15.4 
 14.4 
 14.4 
 13.4 
 
 15.0 
 13.4 
 12.8 
 15.9 
 19.0 
 12.2 
 12.3 
 12.4 
 17.2 
 19.4 
 
 *28.0 
 17.8 
 21.0 
 20.0 
 19.0 
 
 16.1 
 19.8 
 17.2 
 16.6 
 20.4 
 
 19.0 
 17.5 
 16.0 
 21.0 
 16.0 
 
 22.6 
 16.0 
 15.5 
 15.0 
 18.4 
 14.6 
 
 14.0 
 13.6 
 13.0 
 16.3 
 19.6 
 
 15.8 
 22.8 
 22.4 
 26.2 
 ' 17.5 
 
 16.2 
 15.0 
 14.8 
 28.4 
 23.0 
 
 19.0 
 14.2 
 15.6 
 16.9 
 16.0 
 
 16.0 
 23.0 
 15.6 
 19.4 
 19.3 
 
 19.2 
 26.2 
 23.4 
 19.4 
 34.0 
 24.6 
 
 24.8. 
 25.0 
 23.6 
 21.8 
 20.6 
 
 25.6 
 19.0 
 19.0 
 19.0 
 18.1 
 
 16.6 
 17.5 
 16.0 
 15.0 
 19.6 
 
 24.2 
 15.8 
 14.0 
 21.4 
 15.4 
 
 15.0 
 14.4 
 13.8 
 13.2 
 12.8 
 
 12.4 
 12.4 
 14.0 
 17.3 
 20.6 
 
 20.6 
 13.0 
 18.4 
 13.6 
 13.0 
 
 14.8 
 16.6 
 19.4 
 14.4 
 14.0 
 
 12.8 
 15.4 
 15.7 
 16.0 
 12.4 
 
 12.8 
 23.4 
 14.0 
 25.0 
 26.5 
 
 28.0 
 22.6 
 21.0 
 16.9 
 16.3 
 
 29.6 
 26.6 
 23.6 
 21.6 
 23-2 
 23.6 
 
 20.4 
 17.8 
 15.4 
 13.0 
 24.6 
 
 19.2 
 15.2 
 28.4 
 23.6 
 20.4 
 
 17.2 
 15.6 
 14.4 
 14.0 
 13.8 
 
 13.0 
 18.2 
 23.4 
 16.0 
 14.4 
 
 16.6 
 27.4 
 24.8 
 19.8 
 14.8 
 
 14.0 
 13.2 
 12.8 
 17.5 
 25.0 
 
 28.7 
 
 2 
 
 32.4 
 
 3 
 
 22.4 
 
 4 
 
 22.7 
 
 5 
 
 23.0 
 
 6 
 
 22.0 
 
 7 
 
 21.4 
 
 8 
 
 22.4 
 
 9 
 
 23.4 
 
 10 
 
 21.6 
 
 11 
 
 19.0 
 
 12 
 
 17.8 
 
 13 
 
 20.8 
 
 14 
 
 15.8 
 
 15 
 
 15.9 
 
 16 
 
 16.0 
 
 17 
 
 14.4 
 
 18 
 
 14.0 
 
 19 
 
 13.6 
 
 20 
 
 20.6 
 
 21 
 
 32.8 
 
 22 
 
 27.9 
 
 23 
 
 23.0 
 
 24 
 
 24.0 
 
 25 
 
 22.3 
 
 26 
 
 20.6 
 
 27 
 
 19.4 
 
 28 
 
 19.4 
 
 29 
 
 18.9 
 
 30 
 
 18.4 
 
 31 
 
 19.0 
 
 
 
 Note.— Discharge interpolated for days for which gage heights are missing. 
 Monthly discharge of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 57.5 
 25.0 
 29.8 
 29.4 
 28.0 
 28.0 
 28.0 
 34.0 
 25.6 
 29.6 
 28.4 
 32.8 
 
 0.9 
 10.0 
 10.4 
 11.4 
 13.2 
 13.4 
 12.2 
 13.0 
 12.4 
 12.4 
 12.8 
 13.6 
 
 15.5 
 12.5 
 16.3 
 17.4 
 18.7 
 18.0 
 17.3 
 19.4 
 17.9 
 18.9 
 18.1 
 21.1 
 
 953 
 719 
 1,000 
 1,040 
 1,150 
 1,070 
 1,060 
 1,190 
 1,070 
 1,160 
 1,080 
 1,300 
 
 B. 
 
 February 
 
 B. 
 
 March 
 
 B. 
 
 April 
 
 B. 
 
 May 
 
 B. 
 
 June 
 
 B. 
 
 July 
 
 B. 
 
 August 
 
 B. 
 
 
 B. 
 
 October 
 
 B. 
 
 November 
 
 B. 
 
 December 
 
 B. 
 
 
 
 The year 
 
 57.5 
 
 .9 
 
 17.6 
 
 12,800 
 
 
 
 
ISLAND OF KAUAI. 
 
 59 
 
 HANAPEPE DITCH AT KOTTLA, NEAR ELEELE, KAUAI. 
 
 Location. — About 4 miles north of Eleele, and 4 miles below intake. 
 
 Records available. — January 1, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read once daily; datum unchanged. 
 
 Channel. — Permanent. 
 
 Discharge measurements. — Made from cross timber of flume. 
 
 Accuracy. — Good . 
 
 Cooperation. — Station maintained in cooperation with Hawaiian Sugar Co. 
 
 Discharge measurements of Hanapepe ditch at Koula, near Eleele, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 5 
 
 W.V.Hardy 
 
 Feet. 
 2.56 
 2.78 
 
 Sec. -ft. 
 40.0 
 
 Nov. 7 
 
 Larrison and Hardy 
 
 41.9 
 
 
 
 
 Daily gage height, in feet, of Hanapepe ditch at Koula, near Eleele, Kauai, for 1912. 
 
 [S. W. Holmer, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 3.40 
 3.40 
 3.45 
 3.35 
 3.70 
 
 3.70 
 3.70 
 3.70 
 3.70 
 3.60 
 
 3.45 
 3.40 
 3.70 
 
 3.10 
 3.10 
 3.05 
 3.00 
 3.00 
 
 2.95 
 2.95 
 2: 95 
 2.95 
 3.20 
 
 3.00 
 2.90 
 2.90 
 2.90 
 2.88 
 
 2.88 
 2.92 
 2.90 
 2.88 
 2.80 
 
 3.05 
 3.70 
 3.70 
 3.70 
 
 3.35 
 3.20 
 3.15 
 3.02 
 
 3.10 
 3.10 
 
 "3." 25' 
 3.00 
 
 3.10 
 
 2.85 
 2.60 
 3.10 
 3.10 
 
 3.10 
 3.10 
 3.10 
 3.10 
 3.10 
 
 3.10 
 3.10 
 3.10 
 3.20 
 2.95 
 
 2.92 
 2.80 
 2.60 
 
 "*3."i6" 
 
 2.80 
 2.74 
 2.73 
 2.60 
 2.63 
 2.74 
 
 2.63 
 2.61 
 2.90 
 2.65 
 2.80 
 
 2.70 
 3.10 
 3.10 
 3.10 
 3.10 
 
 3.10 
 3.05 
 2.90 
 
 "*2." 84* 
 
 2.82 
 2.10 
 2.10 
 2.94 
 3.10 
 
 2.94 
 3.10 
 3.10 
 2.92 
 3.10 
 
 3.10 
 3.06 
 
 "2.'80" 
 
 2.70 
 
 2.90 
 2.72 
 3.10 
 3.10 
 
 3.08 
 2.92 
 3.10 
 3.00 
 2.80 
 
 2.79 
 
 "2. 90" 
 3.10 
 3.10 
 
 3.10 
 2.96 
 2.60 
 
 "2*72* 
 
 2.74 
 3.10 
 3.10 
 3.10 
 3.10 
 
 3.00 
 3.10 
 3.10 
 3.10 
 3.10 
 3.10 
 
 3.00 
 
 "2. 84" 
 
 3.04 
 3.06 
 
 3.10 
 
 2.88 
 2.88 
 3.10 
 2.88 
 
 2.78 
 2.68 
 3.10 
 3.10 
 3.10 
 
 3.10 
 2.77 
 3.10 
 3.10 
 3.00 
 
 3.10 
 3.10 
 
 "3.10 
 
 3.10 
 
 3.00 
 3.00 
 
 2.84 
 2.77 
 
 2.77 
 
 ■ 2.80 
 2.77 
 2.70 
 2.80 
 2.95 
 
 2.70 
 3.06 
 2.86 
 2.78 
 3.10 
 
 3.10 
 3.10 
 3.10 
 3.10 
 3.10 
 
 3.10 
 3.10 
 3.10 
 3.10 
 3.10 
 
 3.10 
 3.10 
 3.10 
 3.10 
 3.06 
 
 3.10 
 3.02 
 
 "2. 88' 
 3.08 
 2.85 
 
 2.80 
 1.74 
 1.68 
 
 ""i'io" 
 
 3.10 
 3.10 
 3.10 
 3.10 
 3.00 
 
 3.10 
 2.06 
 2.94 
 3.10 
 3.10 
 
 3.08 
 2.93 
 
 ' '2. 80* 
 2.74 
 
 2.67 
 3.10 
 2.84 
 3.10 
 3.10 
 
 3.10 
 3.10 
 2.78 
 3.08 
 3.10 
 
 3.10 
 3.10 
 3.10 
 3.10 
 3.08 
 
 3.10 
 3.10 
 
 "i'io" 
 3.00 
 
 2.92 
 2.92 
 2.92 
 2.77 
 2.73 
 
 2.70 
 3.10 
 2.73 
 2.96 
 2.80 
 
 2.76 
 3.10 
 2.70 
 2.60 
 2.52 
 
 2.48 
 2.48 
 2.45 
 2.55 
 3.00 
 
 3.00 
 
 2.72 
 3.10 
 2.62 
 2.70 
 
 "2. 80* 
 2.90 
 3.08 
 3.00 
 
 2.55 
 
 2.52 
 2.52 
 2.51 
 2.51 
 
 2.50 
 
 2.58 
 2.85 
 3.10 
 3.10 
 
 3.10 
 3.10 
 3.10 
 2.90 
 2.75 
 
 3.10 
 3.10 
 3.10 
 3.10 
 3.10 
 3.10 
 
 3.10 
 2.80 
 
 "*2." 78" 
 3.10 
 
 3.00 
 3.00 
 2.80 
 3.10 
 
 2.98 
 2.78 
 2.70 
 2.65 
 2.59 
 
 2.50 
 
 "2. 70* 
 3.10 
 2.62 
 
 3.10 
 2.96 
 3.10 
 3.00 
 2.75 
 
 2.60 
 2.55 
 2.55 
 3.08 
 3.10 
 
 3.10 
 
 2 
 
 3.10 
 
 3 
 
 3.10 
 
 4 
 
 3.10 
 
 5 
 
 3.10 
 
 6 
 
 3.10 
 
 7 
 
 
 8 
 
 3.10 
 
 9 
 
 3.10 
 
 10 
 
 3.10 
 
 11 
 
 3.10 
 
 12 
 
 2.94 
 
 13 
 
 14 
 
 2.84 
 2.80 
 
 15 
 
 3.30 
 
 3.25 
 3.20 
 3.18 
 3.15 
 3.40 
 
 3.20 
 3.18 
 3.15 
 1.90 
 2.45 
 
 2.40 
 
 2.40 
 2.20 
 3.00 
 2.98 
 3.20 
 
 
 16 
 
 2.70 
 
 17 
 
 2.70 
 
 18 
 
 2.60 
 
 19 
 
 2.64 
 
 20 
 
 3.10 
 
 21 
 
 3.10 
 
 22 
 
 
 23 
 
 3.10 
 
 24 .. 
 
 3.10 
 
 25 
 
 3.10 
 
 26 
 
 3.10 
 
 27 
 
 3.10 
 
 28 . 
 
 3.10 
 
 29 
 
 
 30 
 
 3.10 
 
 31 
 
 3.10 
 
 
 
 
 
 Note. — No reading on days for which gage heights are missing. 
 
60 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, of Hanapepe ditch at Koula, near Eleele, Kauai, for 1912, 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 59.3 
 59.3 
 60.6 
 58.0 
 65.4 
 
 65.4 
 65.4 
 65.4 
 65.4 
 62.7 
 
 60.6 
 59.3 
 65.4 
 61.0 
 56.7 
 
 55.4 
 54.1 
 53.6 
 52.8 
 59.3 
 
 54.1 
 53.6 
 52.8 
 23.2 
 35.4 
 
 34.2 
 34.2 
 29.5 
 49.0 
 48.5 
 54.1 
 
 51.5 
 51.5 
 50.2 
 49.0 
 49.0 
 
 47.8 
 47.8 
 47.8 
 47.8 
 54.1 
 
 49.0 
 46.5 
 46.5 
 46.5 
 46.0 
 
 46.0 
 47.0 
 46.5 
 46.0 
 44.0 
 
 50.2 
 65.4 
 65.4 
 65.4 
 61.7 
 
 58.0 
 54.1 
 52.8 
 49.5 
 
 51.5 
 51.5 
 53.4 
 55.4 
 49.0 
 
 51.5 
 45.2 
 39.0 
 51.5 
 51.5 
 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 
 51.5 
 51.5 
 51.5 
 54.1 
 
 47.8 
 
 47.0 
 44.0 
 39.0 
 45.2 
 51.5 
 
 44.0 
 42.5 
 42.2 
 39.0 
 39.8 
 42.5 
 
 39.8 
 39.2 
 46.5 
 40.2 
 44.0 
 
 41.5 
 51.5 
 51.5 
 51.5 
 51.5 
 
 51.5 
 50.2 
 46.5 
 45.8 
 45.0 
 
 44.5 
 27.3 
 27.3 
 47.5 
 51.5 
 
 47.5 
 51.5 
 51.5 
 47.0 
 51.5 
 
 51.5 
 50.5 
 47.2 
 44.0 
 41.5 
 
 46.5 
 42.0 
 51.5 
 51.5 
 50.2 
 
 51.0 
 
 47.0 
 51.5 
 49.0 
 44.0 
 
 43.8 
 45.2 
 46.5 
 51.5 
 51.5 
 
 51.5 
 48.0 
 39.0 
 40.5 
 42.0 
 
 42.5 
 51.5 
 51.5 
 51.5 
 51.5 
 
 49.0 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 
 49.0 
 47.0 
 45.0 
 50.0 
 50.5 
 
 51.5 
 46.0 
 46.0 
 51.5 
 46.0 
 
 43.5 
 41.0 
 51.5 
 51.5 
 51.5 
 
 51.5 
 43.2 
 51.5 
 51.5 
 49.0 
 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 
 49.0 
 49.0 
 45.0 
 43.2 
 43.2 
 
 44.0 
 43.2 
 41.5 
 44.0 
 47.8 
 
 41.5 
 50.5 
 45.5 
 43.5 
 51.5 
 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 
 51.5 
 51.5 
 51.5 
 51.5 
 50.5 
 
 51.5 
 49.5 
 47.8 
 46.0 
 51.0 
 45.2 
 
 44.0 
 20.2 
 19.0 
 35.2 
 51.5 
 
 51.5 
 51.5 
 51.5 
 51.5 
 49.0 
 
 51.5 
 26.5 
 47.5 
 51.5 
 51.5 
 
 51.0 
 47.2 
 45.6 
 44.0 
 42.5 
 
 40.8 
 51.5 
 45.0 
 51.5 
 51.5 
 
 51.5 
 51 5 
 43.5 
 51.0 
 51.5 
 51.5 
 
 51.5 
 51.5 
 51.5 
 51.5 
 51.0 
 
 51.5 
 51.5 
 39.4 
 27.3 
 49.0 
 
 47.0 
 47.0 
 47.0 
 43.2 
 42.2 
 
 41.5 
 51.5 
 42.2 
 48.0 
 44.0 
 
 43.0 
 51.5 
 41.5 
 39.0 
 37.1 
 
 36.1 
 36.1 
 35.4 
 37.8 
 49.0 
 
 49.0 
 42.0 
 51.5 
 39.5 
 41.5 
 
 42.8 
 44.0 
 46.5 
 51.0 
 49.0 
 
 37.8 
 37.1 
 37.1 
 36.8 
 36.8 
 
 36.6 
 38.5 
 45.2 
 51.5 
 51.5 
 
 51.5 
 51.5 
 51.5 
 46.5 
 42.8 
 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 51,5 
 
 51.5 
 44.0 
 43.8 
 43.5 
 51.5 
 
 49.0 
 49.0 
 44.0 
 51.5 
 50.0 
 
 48.5 
 43.5 
 41.5 
 40.2 
 38.8 
 
 36.6 
 39.0 
 41.5 
 51.5 
 39.5 
 
 51.5 
 48.0 
 51.5 
 49.0 
 
 42.8 
 
 39.0 
 37.8 
 37.8 
 51.0 
 51.5 
 
 51.5 
 
 2 
 
 51.5 
 
 3 
 
 51.5 
 
 4 
 
 51.5 
 
 5 
 
 51.5 
 
 6 
 
 51.5 
 
 7 
 
 51.5 
 
 8 
 
 51.5 
 
 9 
 
 51.5 
 
 10 
 
 51.5 
 
 11 
 
 51.5 
 
 12 
 
 47.5 
 
 13 
 
 45.0 
 
 14 
 
 44.0 
 
 15 
 
 42.8 
 
 16 
 
 41.5 
 
 17 
 
 41.5 
 
 18 
 
 39.0 
 
 19 
 
 40.0 
 
 20 
 
 51.5 
 
 21 
 
 51.5 
 
 22 
 
 51.5 
 
 23 
 
 51.5 
 
 24 
 
 51.5 
 
 25 
 
 51.5 
 
 26 
 
 51.5 
 
 27 
 
 51.5 
 
 28 
 
 51.5 
 
 29 
 
 51.5 
 
 30 
 
 51.5 
 
 31 
 
 51.5 
 
 
 
 Note.— Discharge interpolated for days for which gage heights are missing. 
 
 Monthly discharge of Hanapepe ditch at Koula, near Eleele, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 65.4 
 65.4 
 55.4 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 51.5 
 
 23.2 
 44.0 
 39.0 
 27.3 
 39.0 
 41.0 
 41.5 
 19.0 
 27.3 
 36.6 
 36.6 
 39.0 
 
 54.0 
 51.1 
 
 48.1 
 45.9 
 48.3 
 48.5 
 48.9 
 46.0 
 44.5 
 45.8 
 45.3 
 49.2 
 
 3,320 
 2,940 
 2,960 
 2,730 
 2,970 
 2,890 
 3,010 
 2,830. 
 2,650 
 2,820 
 2,700 
 3,030 
 
 A. 
 
 February 
 
 A. 
 
 March 
 
 A. 
 
 April 
 
 A. 
 
 May 
 
 A. 
 
 June 
 
 A. 
 
 July 
 
 A. 
 
 August 
 
 A. 
 
 
 A. 
 
 October 
 
 A. 
 
 
 A. 
 
 December. 
 
 A. 
 
 
 
 The year 
 
 65.4 
 
 19.0 
 
 48.0 
 
 34,800 
 
 
 
 
 HANAPEPE DITCH AT WEIR NEAR HANAPEPE.i KATTAI. 
 
 Location. — About 2\ miles northeast of Hanapepe, below the last siphon crossing 
 
 Hanapepe River. 
 Records available. — January, 1910, to December 31, 1912. 
 Gage. — Staff gage spiked to right bank of ditch; read once daily; zero on gage equals 
 
 crest of weir. 
 
 Channel. — Permanent. 
 
 i Described in Water-Supply Paper 318, p. 85, as near Makaweli. 
 
ISLAND OF KAUAI. 
 
 61 
 
 Discharge measurements. — Measured by a 12-foot sharp-crested weir with end 
 
 contraction and from a plank across ditch. 
 Accuracy. — Records good. 
 Cooperation. — Station is the property of the Hawaiian Sugar Co. and records are 
 
 furnished at end of calendar year. 
 
 Daily discharge, in second-feet, of Hanapepe ditch at weir near Hanapepe, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 42.5 
 
 42.5 
 42.5 
 42.5 
 42.5 
 
 45.1 
 45.1 
 45.1 
 46.4 
 46.4 
 
 46.4 
 43.8 
 43.8 
 12.4 
 12.4 
 
 40.0 
 21.8 
 40.0 
 38.8 
 38.8 
 
 41.2 
 40.0 
 37.5 
 37.5 
 12.4 
 
 26.0 
 26.0 
 26.0 
 28.2 
 35.2 
 37.5 
 
 37.5 
 37.5 
 37.5 
 37.5 
 36.3 
 
 35.2 
 35.2 
 35.2 
 35.2 
 35.2 
 
 37.5 
 35.2 
 35.2 
 34.0 
 34.0 
 
 34.0 
 34.0 
 34.0 
 32.8 
 32.8 
 
 34.0 
 36.3 
 45.1 
 
 47.7 
 46.4 
 
 45.1 
 41.2 
 38.8 
 37.5 
 
 34.0 
 37.5 
 37.5 
 41.2 
 37.5 
 
 36.3 
 37.5 
 
 38.8 
 40.0 
 45.1 
 
 46.4 
 47.7 
 47.7 
 47.7 
 46.4 
 
 46.4 
 47.7 
 47.7 
 47.7 
 42.5 
 
 41.2 
 40.0 
 38.8 
 37.5 
 40.0 
 
 43.8 
 37.5 
 37.5 
 37.5 
 37.5 
 37.5 
 
 37.5 
 36.3 
 35.8 
 35.2 
 40.0 
 
 38.8 
 42.5 
 46.4 
 46.4 
 47.7 
 
 47.7 
 46.4 
 44.4 
 42.5 
 42.5 
 
 38.8 
 41.2 
 46.4 
 45.1 
 40.0 
 
 45.1 
 40.0 
 42.5 
 43.8 
 38.8 
 
 47.7 
 47.7 
 45.1 
 41.2 
 42.5 
 
 40.0 
 40.0 
 41.2 
 45.8 
 49.0 
 
 49.0 
 45.1 
 43.8 
 46.4 
 41.2 
 
 40.0 
 37.5 
 35.2 
 35.2 
 45.1 
 
 46.4 
 43.8 
 39.4 
 35.2 
 35.8 
 
 35.2 
 40.0 
 42.5 
 45.1 
 45.1 
 
 43.8 
 41.2 
 46.4 
 46.4 
 42.5 
 44.4 
 
 46.4 
 42.5 
 40.0 
 40.0 
 43.8 
 
 43.8 
 43.8 
 38.8 
 40.0 
 42.5 
 
 37.' 5 
 35.2 
 37.5 
 45.1 
 45.1 
 
 43.8 
 40.0 
 37.5 
 43.8 
 45.1 
 
 43.8 
 46.4 
 45.1 
 45.1 
 45.1 
 
 45.1 
 41.2 
 40.0 
 37.5 
 35.2 
 
 35.2 
 35.2 
 35.2 
 35.2 
 35.2 
 
 37.5 
 35.2 
 41.2 
 36.3 
 37.5 
 
 42.5 
 45.1 
 46.4 
 49.0 
 
 47.7 
 
 46.4 
 46.4 
 46.4 
 46.4 
 46-4 
 
 46.4 
 46.4 
 46.4 
 46.4 
 46.4 
 
 46.4 
 46.4 
 42.5 
 42.5 
 40.6 
 42.5 
 
 40.6 
 38.8 
 36.3 
 34.0 
 37.5 
 
 45.1 
 43.8 
 46.4 
 46.4 
 46.4 
 
 45.8 
 45.1 
 40.6 
 40.6 
 46.4 
 
 46.4 
 43.8 
 37.5 
 35.2 
 34.6 
 
 32.8 
 37.5 
 43.8 
 41.2 
 42.5 
 
 45.1 
 45.1 
 43.8 
 36.3 
 
 45.8 
 45.8 
 
 44.4 
 45.1 
 44.4 
 45.1 
 45.1 
 
 46.4 
 46.4 
 45.1 
 45.1 
 44.4 
 
 41.2 
 41.2 
 42.5 
 40.0 
 36.3 
 
 36.3 
 
 38.8 
 40.0 
 36.3 
 37.5 
 
 37.5 
 32.8 
 37.5 
 32.8 
 30.4 
 
 29.3 
 
 28.2 
 28.2 
 30.4 
 35.2 
 
 37.5 
 37.5 
 29.8 
 37.5 
 32.8 
 
 34.0 
 
 35.8 
 38.8 
 42.5 
 38.8 
 
 37.5 
 35.2 
 35-2 
 32.8 
 34.0 
 
 30.4 
 34.0 
 41.2 
 41.2 
 45.1 
 
 46.4 
 47.7 
 47.7 
 46.4 
 42.5 
 
 43.8 
 46.4 
 46.4 
 46.4 
 45.8 
 46.4 
 
 45.8 
 45.1 
 40.6 
 40.6 
 40.0 
 
 46.4 
 
 45.8 
 42.5 
 46.4 
 49.0 
 
 49.0 
 
 43.8 
 38.8 
 37.5 
 35.8 
 
 34.6 
 
 32.8 
 32.8 
 41.2 
 37.5 
 
 40.0 
 40.6 
 43.8 
 43.8 
 42.5 
 
 39.4 
 35.8 
 35.2 
 36.3 
 42.5 
 
 43.8 
 
 2 
 
 45.1 
 
 3 
 
 47.7 
 
 4 
 
 10.8 
 
 5 
 
 10.8 
 
 6.. 
 
 49.0 
 
 7 
 
 46.4 
 
 8 
 
 46.4 
 
 9... 
 
 46.4 
 
 10 
 
 46.4 
 
 11 
 
 46.4 
 
 12 
 
 41.2 
 
 13 
 
 43.8 
 
 14. 
 
 43.8 
 
 15 
 
 43.8 
 
 16 
 
 43.8 
 
 17 .'. 
 
 43.8 
 
 18 
 
 40.6 
 
 19 
 
 40.0 
 
 20 
 
 42.5 
 
 21 
 
 45.1 
 
 22 
 
 45.1 
 
 23 
 
 42.5 
 
 24 
 
 25 
 
 42.5 
 47.7 
 
 26 
 
 35.2 
 
 27 
 
 45.1 
 
 28 
 
 45.8 
 
 29 
 
 45.8 
 
 30 
 
 45.1 
 
 31 
 
 45.1 
 
 
 
 Monthly discharge of Hanapepe ditch at weir near Hanapepe, Kauai, for 1912. 
 
 Month. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 46.4 
 47.7 
 47.7 
 47.7 
 49.0 
 46.4 
 49.0 
 46.4 
 46.4 
 47.7 
 49.0 
 49.0 
 
 49.0 
 
 Minimum. 
 
 12.4 
 32.8 
 34.0 
 35.2 
 35.2 
 35.2 
 35.2 
 32.8 
 28.2 
 29.8 
 32.8 
 10.8 
 
 10.8 
 
 36.3 
 37.2 
 41.4 
 42.5 
 42.2 
 41.9 
 42.6 
 41.7 
 38.8 
 39.9 
 40.9 
 42.2 
 
 40.6 
 
 Run-off 
 (total in 
 acre-feet). 
 
 2,230 
 2,140 
 2,550 
 2,530 
 2,590 
 2,490 
 2,620 
 2,560 
 2,310 
 2,450 
 2,430 
 2,590 
 
 29,500 
 
62 
 
 HANAPEPE RIVER AT HANAPEPE FALLS, NEAR ELEELE, KATTALi 
 
 Location. — About 8 miles north of Eleele and just above confluence with Hanapepe 
 
 River. 
 Records available. — November 21, 1911, to December 31, 1912. 
 Drainage area. — 6.55 square miles. 
 Gage. — Vertical staff; datum unchanged. 
 Channel. — Permanent. 
 Discharge measurements. — Made from crest of dam. Dam is 75 feet long, 3 feet 
 
 wide, and height is 5 feet on lower side. 
 
 Daily gage height, in feet, of Hanapepe River at Hanapepe Falls, near Eleele, Kauai, 
 
 for 1912. 
 
 [S. W. Holmer, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 
 
 0.12 
 
 
 
 2 
 
 
 
 
 
 
 
 
 
 0.44 
 .42 
 .24 
 .12 
 
 .72 
 .02 
 
 *"\"02" 
 
 
 1.47 
 
 3. . 
 
 
 
 
 
 0.12 
 .65 
 
 
 
 
 
 
 2.45 
 
 4 
 
 
 
 
 
 
 
 
 
 
 
 5 
 
 0.50 
 
 
 
 
 
 0.24 
 
 
 
 0.80 
 .05 
 
 .27 
 
 6 
 
 
 
 
 
 
 .17 
 
 7 
 
 
 
 
 
 
 
 
 0.16 
 .10 
 .52 
 
 .12 
 
 8 
 
 .20 
 .20 
 
 
 
 0.35 
 .36 
 .20 
 
 .15 
 
 
 
 .03 
 
 .12 
 .32 
 
 
 9 
 
 
 0.28 
 
 
 
 .34 
 
 10 
 
 
 
 .08 
 
 .65 
 .02 
 .60 
 
 """.'58" 
 
 .17 
 .68 
 .27 
 .07 
 
 .17 
 
 11 
 
 
 
 .77 
 .72 
 1.12 
 .40 
 .25 
 
 .02 
 
 
 
 
 
 
 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 13 
 
 
 
 
 
 0.70 
 .12 
 .20 
 
 
 
 
 
 
 14 
 
 .45 
 
 
 
 .12 
 
 .27 
 
 .68 
 .27 
 
 
 
 
 
 15 
 
 
 
 
 
 16 
 
 
 
 .10 
 
 
 
 
 17 
 
 
 
 
 
 
 .36 
 
 
 
 18 
 
 
 
 .05 
 
 
 
 .02 
 
 .12 
 
 
 
 .27 
 
 
 19 
 
 
 
 
 
 
 
 .64 
 
 
 20 
 
 
 
 
 .25 
 
 
 
 
 
 .22 
 
 21 
 
 
 
 
 
 .42 
 
 .08 
 
 
 
 
 1.00 
 .12 
 .08 
 
 """."is" 
 
 .75 
 
 1.45 
 
 22 
 
 
 0. 20 
 
 1.00 
 
 .30 
 
 
 .50 
 .10 
 
 .09 
 
 .18 
 .52 
 
 
 
 
 
 23 
 
 .75 
 .30 
 .15 
 
 .14 
 .14 
 
 
 
 
 1.60 
 
 24 
 
 .38 
 
 .58 
 
 
 
 1.35 
 
 25 
 
 .12 
 
 .70 
 .18 
 
 
 
 
 
 
 26 
 
 .50 
 
 
 .35 
 
 .19 
 .80 
 .30 
 
 
 .63 
 
 
 .42 
 
 27 . 
 
 
 
 .28 
 
 28 
 
 
 
 
 1.25 
 .62 
 .14 
 
 
 
 
 .24 
 
 .12 
 .20 
 
 .18 
 
 
 .17 
 
 29 
 
 
 
 
 
 
 
 
 30 
 
 
 
 
 
 
 
 1.30 
 
 .05 
 
 .48 
 
 .08 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Note.— Gage heights show days when water was flowing over dam. Station not visited Sundays, but 
 lack of gage heights on week days indicates that all the water was diverted at the dam. 
 
 HILOA DITCH AT HANAPEPE FALLS, NEAR ELEELE, E^UAI. 
 
 Location. — About 8 miles north of Eleele and 335 feet below intake. 
 
 Records available. — November 22, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read at irregular hour once each day except Sundays; datum 
 
 unchanged. 
 Channel. — Permanent. 
 Discharge measurements. — Made from plank across ditch at gage. 
 
 1 Described in Water-Supply Paper 318, p. 86, as " Hiloa Stream at Hanapepe Falls, near Eleele, Kauai.' 
 
ISLAND OF KAUAI. 63 
 
 Discharge measurements of Hiloa ditch at Hanapepe Falls, near Eleele, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 6 
 
 W. V. Hardy 
 
 Feet. 
 1.86 
 1.82 
 
 Sec.-ft. 
 35.7 
 
 Nov 7 
 
 
 35.5 
 
 
 
 
 Daily 
 
 height, in feet, of Hiloa ditch at Hanapepe Falls, near Eleele, Kauai, for 1912. 
 [S. W. Holmer, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.60 
 1.58 
 1.55 
 
 ""i.'so" 
 
 1.49 
 1.49 
 1.49 
 1.51 
 1.65 
 
 '"i."48" 
 1.47 
 1.46 
 1.46 
 
 1.45 
 1.48 
 
 "i'.te 
 1.43 
 
 1.50 
 2.04 
 2.37 
 2.00 
 
 1.76 
 1.65 
 1.59 
 1.55 
 
 1.90 
 1.59 
 
 "i'76' 
 
 1.55 
 
 1.83 
 1.64 
 1.60 
 2.37 
 
 2.65 
 2.09 
 2.19 
 2.12 
 2.05 
 
 2.02 
 
 "2." 05* 
 1.80 
 1.80 
 
 1.75 
 1.78 
 1.62 
 
 "*2."i6" 
 
 1.68 
 1.58 
 1.57 
 1.54 
 1.50 
 1.72 
 
 1.50 
 1.50 
 1.47 
 1.90 
 
 1.58 
 
 1.56 
 
 "2. 18* 
 2.13 
 2.04 
 
 2.00 
 .1.86 
 1.70 
 
 *"i."64" 
 
 1.66 
 2.05 
 2.00 
 1.66 
 2.27 
 
 "*2."l8" 
 2.18 
 1.67 
 2.52 
 
 1.97 
 
 1.78 
 
 *"i."58' 
 1.53 
 
 1.52 
 1.53 
 2.14 
 
 2.48 
 
 1.77 
 1.75 
 2.20 
 1.80 
 1.58 
 
 1.59 
 
 "l."66' 
 2.16 
 2.20 
 
 1.96 
 1.67 
 1.59 
 
 ""i."53" 
 
 1.74 
 2.15 
 2.22 
 2.34 
 2.00 
 
 "2. 30* 
 1.98 
 1.74 
 2.10 
 2,02 
 
 1.86 
 
 "i.'76' 
 2.00 
 1.88 
 
 1.78 
 1.66 
 1.68 
 
 '"1*66" 
 
 1.63 
 1.62 
 2.50 
 2.17 
 2.24 
 
 ""i."65* 
 2.08 
 2.18 
 1.92 
 
 2.35 
 2.14 
 
 "2.'32" 
 2.02 
 
 1.75 
 1.85 
 1.64 
 1.62 
 1.55 
 
 1.90 
 1.65 
 
 1.54 
 
 1.64 
 1.60 
 1.55 
 
 "*2.' 07* 
 2.02 
 1.92 
 1.94 
 
 1.80 
 2.03 
 
 "¥. 03" 
 1.85 
 
 1.74 
 1.80 
 1.75 
 1.67 
 
 2.09 
 1.85 
 1.60 
 1.80 
 1.70 
 
 1.63 
 
 """..'59" 
 1.54 
 1.50 
 
 1.48 
 1.47 
 1.54 
 
 "*2."l6" 
 
 2.15 
 1.56 
 2.00 
 1.57 
 1.60 
 
 "Y.'lY 
 2.08 
 1.71 
 
 1.78 
 
 1.55 
 1.62 
 
 *'i."68' 
 1.62 
 
 1.57 
 
 2.28 
 
 . 1.82 
 
 2.45 
 
 2.30 
 2.15 
 2.10 
 1.81 
 
 1.77 
 
 2.45 
 
 "% 22" 
 2.12 
 2.19 
 2.18 
 
 2.02 
 1.79 
 
 ""i.*67* 
 2.50 
 
 2.12 
 1.81 
 2.22 
 2.24 
 
 1.80 
 1.68 
 1.60 
 1.56 
 1.53 
 
 1.50 
 
 "2.'32' 
 1.72 
 1.62 
 
 1.76 
 2.22 
 2.49 
 
 "*i.*60* 
 
 1.52 
 1.48 
 1.46 
 1.65 
 2.20 
 
 
 2 
 
 1.82 
 1.80 
 1.74 
 2.35 
 
 1.95 
 
 2.78 
 
 3 
 
 2.10 
 
 4 
 
 
 5.. 
 
 2.22 
 
 1.58 
 
 "i.'60* 
 1.62 
 2.12 
 
 2.48 
 2.11 
 2.30 
 
 "*2.*i2' 
 
 2.17 
 2.42 
 2.07 
 2.05 
 2.05 
 
 "2. 66' 
 
 1.99 
 2.40 
 1.98 
 
 1.94 
 
 1.87 
 
 ""i~69' 
 1.84 
 1.64 
 
 1.80 
 
 1.76 
 2.20 
 2.20 
 2.45 
 1.86 
 
 "i."63" 
 1.64 
 2.52 
 1.95 
 
 1.88 
 1.68 
 
 '"i.'62' 
 1.60 
 
 1.60 
 2.02 
 1.62 
 2.00 
 
 1.95 
 1.97 
 2.07 
 2.04 
 2.10 
 2.05 
 
 2.10 
 
 6 
 
 2.06 
 
 7 
 
 2.02 
 
 8 
 
 2.15 
 2.15 
 2.02 
 
 1.80 
 1.79 
 2.01 
 1.48 
 
 1.78 
 
 1.70 
 1.66 
 1.63 
 1.62 
 2.12 
 
 
 9 
 
 2.14 
 
 10 
 
 2.04 
 
 11 
 
 1.90 
 
 12 
 
 1.86 
 
 13 
 
 1.86 
 
 14 
 
 1.71 
 
 15 
 
 
 16 
 
 1.73 
 
 17 
 
 1.65 
 
 18 
 
 1.62 
 
 19 
 
 1.70 
 
 20 
 
 2.18 
 
 21 
 
 2.74 
 
 22 
 
 1.59 
 2.58 
 1.06 
 1.35 
 
 1.35 
 1.35 
 
 
 23 
 
 2.80 
 
 24 
 
 2.35 
 
 25...: 
 
 
 26 
 
 2.10 
 
 27 
 
 2.00 
 
 28 
 
 2.05 
 
 29 
 
 1.58 
 1.56 
 1.70 
 
 
 30..... 
 
 1.97 
 
 31 
 
 2.06 
 
 
 
 HTTLEIA RIVER BASIN. 
 HULEIA RIVER NEAR LIHUE, KATJAI. 
 
 Location. — Three hundred feet above stone bridge where wagon road from Lihue to 
 the Rice plantation crosses stream and about 4 miles southwest of Lihue. 
 
 Records available. — May 8, 1912, to December 31, 1912. 
 
 Gage. — Vertical low- water staff gage; inclined high- water gage; read once daily, 
 about 9 a.m.; datum unchanged. 
 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made by wading. 
 
 Cooperation. — Station is maintained in cooperation with Charles Rice. 
 
64 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements of Huleia River near Lihue, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 12 
 May 8 
 Oct. 30 
 Nov. 13 
 
 W.V.Hardy 
 
 do 
 
 do 
 
 Larrison and Hardy 
 
 Feet. 
 6.21 
 6.31 
 6.45 
 6.25 
 
 Sec.-ft. 
 5.57 
 7.45 
 10.2 
 6.26 
 
 Daily gage height, in feet, of Huleia River near Lihue, Kauai, for 1912. 
 [Win. Kaiawe, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 6.30 
 6.30 
 6.30 
 6.40 
 6.50 
 
 6.42 
 6.36 
 6.31 
 6.30 
 6.30 
 
 6.31 
 6.31 
 6.30 
 6.31 
 6.31 
 
 6.50 
 6.30 
 6.30 
 6.30 
 6.30 
 
 6.30 
 
 6.29 
 6.27 
 6.25 
 6.25 
 
 6.25 
 6.25 
 6.25 
 6.25 
 6.25 
 
 6.25 
 
 6.24 
 6.22 
 6.21 
 6.20 
 
 6. 20 
 6.20 
 6.20 
 6.20 
 6.32 
 
 6.40 
 6.31 
 6.29 
 7.30 
 6.95 
 
 6.31 
 6.40 
 6.31 
 6.30 
 6.30 
 
 6.30 
 6.30 
 6.29 
 6.29 
 6.30 
 
 6.30 
 6.30 
 6.29 
 6.30 
 6.30 
 6.30 
 
 6.29 
 6.25 
 6.25 
 6.24 
 6.24 
 
 6.29 
 6.25 
 6.22 
 6.20 
 6.21 
 
 6.20 
 6.20 
 6.20 
 6.30 
 6.41 
 
 6.26 
 
 6.25 
 6.22 
 6.22 
 6.22 
 
 6.22 
 6.24 
 6.22 
 6.30 
 6.29 
 
 6.29 
 7.55 
 6.30 
 6.29 
 6.30 
 6.31 
 
 6.30 
 6.25 
 6.30 
 6.30 
 6.30 
 
 7.70 
 6.38 
 6.30 
 6.30 
 6.30 
 
 6.25 
 
 6.22 
 6.21 
 6.20 
 6.20 
 
 6.20 
 6.20 
 6.20 
 6.25 
 6.21 
 
 6.20 
 6.20 
 6.20 
 6.20 
 6.20 
 
 6.20 
 6.20 
 6.20 
 6.20 
 6.20 
 
 6.22 
 6.20 
 6.20 
 6.20 
 6.21 
 
 6.20 
 6.20 
 6.23 
 6.29 
 6.30 
 
 6.31 
 6.31 
 6.22 
 6.22 
 6.20 
 
 6.20 
 
 6.20 
 6.20 
 6.25 
 6.30 
 
 7.10 
 6.40 
 6.30 
 6.30 
 6.29 
 
 6.90 
 6.35 
 6.30 
 6.40 
 6.42 
 6.37 
 
 6.31 
 6.31 
 6.30 
 6.30 
 6.30 
 
 6.30 
 6.30 
 6.30 
 7.30 
 6.35 
 
 6.35 
 6.33 
 6.25 
 6.22 
 6.22 
 
 6.21 
 6.21 
 6.29 
 6.24 
 6.21 
 
 6.25 
 6.30 
 6.35 
 6.31 
 6.30 
 
 6.26 
 6.21 
 6.21 
 6.80 
 6.35 
 
 6.40 
 
 2 
 
 
 6.21 
 
 
 
 
 8.10 
 
 3 
 
 
 
 
 
 8.50 
 
 4 
 
 
 
 
 
 
 7.60 
 
 5. . 
 
 
 
 
 
 
 7.30 
 
 6 
 
 
 
 
 
 
 7.10 
 
 7 
 
 
 
 
 
 6.31 
 6.30 
 6.30 
 6.30 
 
 6.30 
 6.30 
 6.30 
 6.30 
 6.40 
 
 6.35 
 6.31 
 6.30 
 6.30 
 6.29 
 
 6.28 
 6.26 
 6.30 
 6.31 
 6.30 
 
 6.30 
 
 6.30 
 6.35 
 6.37 
 6.32 
 6.31 
 
 7.10 
 
 8 
 
 
 
 
 
 7.10 
 
 9 
 
 
 
 
 
 6.90 
 
 10 
 
 
 
 
 
 6.81 
 
 11 
 
 
 
 
 
 6.75 
 
 12 
 
 
 
 
 
 6.75 
 
 13 
 
 
 
 
 
 6.70 
 
 14 
 
 
 
 
 
 6.65 
 
 15 
 
 
 
 
 
 6.63 
 
 16 
 
 
 
 
 
 6.60 
 
 17 
 
 
 
 
 
 6.60 
 
 18 
 
 
 
 
 
 6.59 
 
 19 
 
 
 
 
 
 6.55 
 
 20 
 
 
 
 
 
 6.60 
 
 21 
 
 
 
 
 
 6.60 
 
 22 
 
 
 
 
 
 6.55 
 
 23 
 
 
 
 
 
 7.60 
 
 24 
 
 
 
 
 
 8.10 
 
 25 
 
 
 
 
 
 7.90 
 
 26 
 
 
 
 
 
 7.75 
 
 27 
 
 
 
 
 
 7.00 
 
 28 
 
 
 
 
 
 6.65 
 
 29 
 
 
 
 
 
 6.60 
 
 30 
 
 
 
 
 
 6.60 
 
 31 
 
 
 
 
 
 6.60 
 
 
 
 
 
 
 
 HANAMAULU RIVER BASIN. 
 HANAMATTLXT RIVER AT KAPAIA, NE AR LIHTJE, KAUAI. 
 
 Location. — At wagon-road bridge about 600 feet north of the village of Kapaia and 
 
 1 mile north of Lihue. 
 Records available. — September 4, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 9 a. m. and 5 p.m.; datum unchanged. 
 Channel. — Permanent . 
 Discharge measurements. — Made from lower side of bridge during high water and 
 
 by wading at low water. 
 Accuracy. — Records good. 
 
 Discharge measurements of Hanamaulu River at Kapaia, near Lihue, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 28 
 
 W.V.Hardy 
 
 Feet. 
 4.95 
 5.80 
 
 Sec.-ft. 
 6.47 
 
 Mar. 15 
 
 
 35.9 
 
 
 
 
ISLAND OF KAUAI. 
 
 65 
 
 Daily gage height, in feet, of Hanamaulu River at Kapaia, near Lihue, Kauai, for 1912. 
 
 [J. K. Gandall, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 5.2 
 5.2 
 5.2 
 5.1 
 5.1 
 
 5.0 
 
 4.9 
 
 4.8 
 4.8 
 
 ""b.2 
 
 5.1 
 5.1 
 4.9 
 4.9 
 4.9 
 
 "TT 
 5.3 
 4.9 
 4.9 
 
 4.9 
 4.9 
 
 "TT 
 
 4.9 
 
 4.9 
 4.9 
 5.3 
 5.3 
 
 5.3 
 5.3 
 4.9 
 4.9 
 
 4.9 
 4.9 
 
 "TT 
 5.5 
 
 5.5 
 5.5 
 5.5 
 
 5.7 
 
 5.5 
 5.7 
 
 5.7 
 5.8 
 5.8 
 
 5.8 
 
 "TT 
 5.3 
 
 5.2 
 
 5.2 
 5.5 
 5.5 
 
 "TT 
 
 5.4 
 5.3 
 5.1 
 5.0 
 5.0 
 
 5.1 
 5.2 
 5.1 
 5.1 
 
 5.1 
 
 5.2 
 
 "TT" 
 5.0 
 
 5.6 
 
 5.4 
 5.0 
 
 5.0 
 
 "TT" 
 
 5.0 
 
 7.5 
 
 6.15 
 
 5.7 
 
 5.5 
 
 "TT" 
 
 5.2 
 5.1 
 5.3 
 
 5.3 
 5.3 
 
 "TT' 
 5.3 
 
 5.6 
 5.1 
 5.1 
 5.1 
 
 5.0 
 5.0 
 5.0 
 5.0 
 5.0 
 
 5.0 
 
 ""To" 
 
 5.0 
 5.1 
 
 5.1 
 
 5.1 
 5.1 
 
 "TT 
 
 5.0 
 5.1 
 5.1 
 5.1 
 5.1 
 
 "To" 
 
 5.0 
 5.6 
 
 5.7 
 5.7 
 
 5.7 
 
 "TT 
 
 5.7 
 5.6 
 
 5.3 
 5.2 
 5.5 
 
 "*"5*i" 
 
 5.1 
 5.1 
 5.1 
 5.0 
 5.1 
 
 "TT 
 5.4 
 5.3 
 5.2 
 
 5.2 
 5.1 
 
 "TT 
 5.1 
 
 5.1 
 
 5.0 
 5.0 
 5.0 
 
 5.0 
 5.0 
 5.0 
 5.0 
 5.0 
 
 5.0 
 
 "TT 
 5.3 
 
 5.0 
 
 5.0 
 5.0 
 5.0 
 
 "TT 
 
 5.1 
 5.2 
 5.3 
 5.2 
 5.2 
 
 "TY 
 
 5.1 
 5.0 
 5\0 
 
 5.0 
 5.0 
 
 "To" 
 
 5.0 
 5.7 
 
 5.5 
 5.1 
 5.1 
 
 "TT" 
 
 5.1 
 4.9 
 4.9 
 4.9 
 
 4.8 
 
 "4.* 8** 
 4.9 
 4.9 
 4.9 
 
 4.9 
 
 4.8 
 
 "TT* 
 4.8 
 
 4.8 
 4.8 
 4.85 
 4.8 
 
 4.8 
 4.8 
 4.8 
 4.8 
 5.0 
 4.9 
 
 "TT 
 4.9 
 
 4.8 
 4.8 
 
 4.9 
 5.0 
 
 ""TT 
 4.8 
 
 4.9 
 4.9 
 4.9 
 4.9 
 
 4.8 
 4.8 
 4.9 
 5.0 
 5.0 
 
 5.0 
 
 "To" 
 
 5.0 
 5.0 
 
 5.0 
 5.0 
 5.0 
 
 "TT 
 
 4.9 
 4.9 
 4.9 
 5.0 
 5.0 
 
 "TT 
 
 5.0 
 5.0 
 4.9 
 
 4.9 
 4.9 
 
 "TT 
 
 4.8 
 
 4.8 
 5.0 
 4.9 
 4.9 
 
 4.8 
 4.8 
 4.9 
 5.0 
 5.0 
 
 5.0 
 
 4.7 
 4.7 
 
 
 2 
 
 
 3 
 
 
 4 
 
 5.8 
 5.8 
 
 5.0 
 5.0 
 5.0 
 
 4.8 
 
 
 5 
 
 
 6. 
 
 
 7 
 
 
 8 
 
 5.2 
 5.2 
 
 5.1 
 
 5.0 
 5.0 
 5.0 
 
 
 9 
 
 
 10 
 
 
 11 
 
 4.9 
 5.0 
 4.9 
 4.7 
 4.7 
 
 4.8 
 
 "TT 
 4.8 
 4.8 
 
 4.8 
 
 
 12 
 
 
 13 
 
 
 14 
 
 
 
 5.2 
 
 5.1 
 5.1 
 4.9 
 4.9 
 4.9 
 
 
 16 
 
 
 17 
 
 5.38 
 
 
 
 19 
 
 
 20 
 
 
 
 5.7 
 
 22 
 
 4.8 
 4.8 
 5.6 
 5.6 
 
 5.3 
 
 
 23 
 
 
 5.7 
 
 24 
 
 5.7 
 
 25 
 
 5.8 
 
 
 5.7 
 
 27 
 
 5.65 
 
 28 
 
 4.7 
 4.7 
 4.7 
 4.7 
 
 
 5.65 
 
 29 
 
 5.5 
 5.4 
 
 5.4 
 
 
 30 
 
 
 5.6 
 
 31 
 
 5.5 
 
 
 
 
 
 
 Daily discharge, in second-feet, of Hanamaulu River at Kapaia, near Lihue, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 11.3 
 11.3 
 11.3 
 9.0 
 9.0 
 
 7.1 
 9.2 
 11.3 
 11.3 
 9.0 
 
 7.1 
 7.1 
 7.1 
 9.2 
 11.3 
 
 9.0 
 9.0 
 5.6 
 5.6 
 5.6 
 
 5.0 
 
 4.3 
 
 4.3 
 
 25.1 
 
 25.1 
 
 14.0 
 14.0 
 17.4 
 20.9 
 17.2 
 17.2 
 
 5.6 
 4.3 
 4.3 
 7.8 
 11.3 
 
 9.0 
 9.0 
 5.6 
 5.6 
 5.6 
 
 13.2 
 20.9 
 1*.0 
 5.6 
 5.6 
 
 5.6 
 5.6 
 11.4 
 17.2 
 5.6 
 
 5.6 
 5.6 
 14.0 
 14.0 
 14.0 
 
 14.0 
 14.0 
 5.6 
 5.6 
 
 5.6 
 5.6 
 11.4 
 17.2 
 20.9 
 
 20.9 
 20.9 
 20.9 
 29.9 
 25.4 
 
 20.9 
 29.9 
 29.9 
 35.2 
 35.2 
 
 35.2 
 24.6 
 14.0 
 14.0 
 11.3 
 
 11.3 
 20.9 
 20.9 
 23.0 
 25.1 
 
 17.2 
 14.0 
 9.0 
 7.1 
 7.1 
 8.0 
 
 9.0 
 11.3 
 9.0 
 9.0 
 9.0 
 
 11.3 
 11.3 
 11.3 
 7.1 
 25.1 
 
 17.2 
 7.1 
 7.1 
 8.0 
 9.0 
 
 7.1 
 160.0 
 57.6 
 29.9 
 20.9 
 
 17.4 
 14.0 
 11.3 
 9.0 
 14.0 
 
 14.0 
 14.0 
 19.6 
 25.1 
 14.0 
 
 25.1 
 9.0 
 9.0 
 9.0 
 
 8.0 
 
 7.1 
 7.1 
 7.1 
 7.1 
 7.1 
 
 7.1 
 7.1 
 7.1 
 7.1 
 9.0 
 
 9.0 
 9.0 
 9.0 
 9.0 
 9.0 
 
 7.1 
 9.0 
 9.0 
 9.0 
 9.0 
 
 8.0 
 
 7.1 
 
 7.1 
 
 25.1 
 
 29.9 
 
 29.9 
 
 29.9 
 32.6 
 35.2 
 29.9 
 25.1 
 
 14.0 
 11.3 
 20.9 
 15.0 
 9.0 
 
 9.0 
 9.0 
 9.0 
 7.1 
 9.0 
 
 17.0 
 25.1 
 17.2 
 14.0 
 11.3 
 
 11.3 
 9.0 
 9.0 
 9.0 
 9.0 
 
 9.0 
 7.1 
 7.1 
 7.1 
 7.1 
 
 7.1 
 7.1 
 7.1 
 7.1 
 7.1 
 
 7.1 
 7.1 
 7.1 
 14.0 
 7.1 
 
 7.1 
 
 7.1 
 
 7.1 
 
 21.2 
 
 35.2 
 
 9.0 
 11.3 
 14.0 
 11.3 
 11.3 
 
 11.3 
 11.3 
 9.0 
 7.1 
 7.1 
 
 7.1 
 7.1 
 7.1 
 7.1 
 7.1 
 29.9 
 
 20.9 
 9.0 
 9.0 
 9.0 
 9.0 
 
 9.0 
 5.6 
 5.6 
 5.6 
 4.3 
 
 4.3 
 4.3 
 5.6 
 5.6 
 5.6 
 
 5.6 
 4.3 
 4.3 
 4.3 
 4.3 
 
 4.3 
 4.3 
 5.0 
 4.3 
 4.3 
 
 4.3 
 4.3 
 4.3 
 
 4.3 
 7.1 
 5.6 
 
 7.3 
 9.0 
 5.6 
 4.3 
 4.3 
 
 5.6 
 7.1 
 6.4 
 5.6 
 
 4.3 
 
 5.6 
 5.6 
 5.6 
 5.6 
 5.0 
 
 4.3 
 4.3 
 5.6 
 7.1 
 7.1 
 
 7.1 
 7.1 
 7.1 
 7.1 
 7.1 
 
 7.1 
 7.1 
 7.1 
 6.4 
 5.6 
 
 5.6 
 5.6 
 5.6 
 7.1 
 7.1 
 
 7.1 
 7.1 
 7.1 
 7.1 
 5.6 
 
 5.6 
 5.6 
 5.6 
 5.6 
 4.3 
 
 4.3 
 7.1 
 5.6 
 5.6 
 5.0 
 
 4.3 
 4.3 
 5.6 
 7.1 
 7.1 
 
 7.1 
 5.2 
 3.2 
 3.2 
 3.2 
 3.2 
 
 3.2 
 3.2 
 19.2 
 35.2 
 35.2 
 
 7.1 
 7.1 
 7.1 
 4.3 
 5.0 
 
 5.6 
 7.1 
 5.6 
 3.2 
 3.2 
 
 4.3 
 4.3 
 4.3 
 4.3 
 4.3 
 
 4.3 
 
 
 
 2 
 
 
 3 
 
 
 4 
 
 
 5 
 
 
 6 
 
 
 7 
 
 
 8 
 
 
 9 
 
 
 10 
 
 
 11 
 
 
 12 
 
 
 13 
 
 
 14 
 
 
 15 
 
 
 16 
 
 
 17 
 
 16.6 
 
 18 
 
 
 19 
 
 
 20 
 
 
 21 
 
 29.9 
 
 22 
 
 29.9 
 
 23 
 
 29.9 
 
 24 
 
 29.9 
 
 25 
 
 35.2 
 
 26 
 
 29.9 
 
 27 
 
 27.5 
 
 28 
 
 27.5 
 
 29 
 
 26.3 
 
 30 
 
 25.1 
 
 31 
 
 20.9 
 
 
 
 14694°— wsp 336—14- 
 
66 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of Hanamaulu River at Kapaia, near Lihue, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 1-21 
 
 December 17 and 21-31. 
 
 The period 
 
 25.1 
 
 17.2 
 
 35.2 
 
 160.0 
 
 29.0 
 
 35.2 
 
 35.2 
 
 20.9 
 
 9.0 
 
 7.1 
 
 4.3 
 4.3 
 5.6 
 7.1 
 7.1 
 7.1 
 7.1 
 4.3 
 4.3 
 3.2 
 
 11.00 
 9.14 
 19.10 
 19.70 
 10.60 
 14.50 
 10.40 
 6.04 
 6.14 
 5.57 
 8.43 
 27.40 
 
 676 
 526 
 1,170 
 1,170 
 652 
 863 
 640 
 371 
 365 
 342 
 351 
 652 
 
 7,780 
 
 WAILUA RIVER BASIN. 
 
 SOUTH FORK OF WAILUA RIVER ABOVE WAIEHU FALLS, NEAR LIHUE, KAUAI. 
 
 Location. — About 7 miles northeast of Lihue, and 1 mile above Waiehu Falls. 
 
 Records available. — December 10, 1911, to December 31, 1912. 
 
 Drainage area. — 22.40 square miles. 
 
 Gage. — Friez automatic register. 
 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made from cable and car. 
 
 Accuracy. — Records good. 
 
 Discharge measurements of South Fork of Wailua River above Waiehu Falls, near Lihue, 
 
 Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 18 
 
 W. V. Hardy 
 
 Feet. 
 3.18 
 4.93 
 3.76 
 3.46 
 
 Sec.-ft. 
 10.8 
 
 Mar. 12 
 
 do 
 
 521 
 
 Oct. 29 
 
 do 
 
 112 
 
 Nov. 13 
 
 do 
 
 38.6 
 
 
 
 
 Daily gage height, in feet, of South Fork of Wailua River above Waiehu Falls, near Lihue, 
 
 Kauai, for 1912. 
 
 [Gus Schilling, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 3.80 
 3.83 
 3.84 
 3.84 
 4.02 
 
 3.76 
 3.76 
 3.92 
 3.96 
 3.88 
 
 3. §8 
 3.78 
 3.66 
 3.94 
 3.76 
 
 3.48 
 3.44 
 3.42 
 3.38 
 3.34 
 
 3.30 
 3.33 
 3.34 
 3.38 
 3.38 
 
 3.25 
 3.13 
 3.10 
 3.09 
 3.09 
 
 3.52 
 3.46 
 3.50 
 3.60 
 3.36 
 
 3.38 
 3.47 
 3.56 
 4.62 
 4.40 
 
 5.10 
 4.85 
 6.08 
 4.64 
 4.20 
 
 3.48 
 3.42 
 3.40 
 3.60 
 3.58 
 
 3.95 
 4.90 
 4.09 
 4.27 
 4.00 
 
 3.84 
 3.72 
 3.63 
 3.66 
 3.55 
 
 3.55 
 3.55 
 3.64 
 3.61 
 3.65 
 
 3.40 
 3.39 
 3.60 
 3.50 
 3.51 
 
 3.52 
 3.42 
 3.58 
 3.74 
 4.08 
 
 3.57 
 3.52 
 3.57 
 3.70 
 3.71 
 
 3.60 
 3.52 
 3.65 
 3.87 
 3.54 
 
 3.47 
 3.44 
 3.95 
 3.75 
 3.64 
 
 3.32 
 3.29 
 3.24 
 3.39 
 3.55 
 
 3.36 
 3.55 
 3.49 
 3.41 
 3.84 
 
 4.14 
 
 3.85' 
 
 4.66 
 
 6.26 
 
 5.00 
 
 3.63 
 3.48 
 3.40 
 3.55 
 3.60 
 
 3.58 
 3.54 
 3.53 
 3.50 
 3.46 
 
 3.52 
 3.66 
 3.89 
 4.03 
 3.78 
 
 3.82 
 
 3.88 
 3.90 
 3.90 
 3.88 
 
 4.25 
 3.90 
 3.93 
 3.83 
 3.72 
 
 3.72 
 
 3.64 
 3.53 
 
 
 3.66 
 3.60 
 3.60 
 3.58 
 3.98 
 
 3.71 
 3.66 
 4.30 
 4.20 
 3.67 
 
 3.59 
 3.53 
 3.46 
 3.43 
 3.40 
 
 4.08 
 
 2 
 
 6.53 
 
 3 
 
 6.75 
 
 4. 
 
 4.78 
 
 5 
 
 4.22 
 
 6 
 
 4.01 
 
 7 
 
 3.93 
 
 8 
 
 4.68 
 
 9 
 
 4.12 
 
 10 
 
 3.91 
 
 11 
 
 3.87 
 
 12 
 
 3.79 
 
 13 
 
 3.74 
 
 14 
 
 3.40 1 
 
 3.47 1 
 
 3.65 
 
 15 
 
 3.60 
 
ISLAND OF KAUAI. 
 
 67 
 
 Daily gage height, in feet, of South Fork of Wailua River above Waiehu Falls, near Lihue, 
 Kauai, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 3.70 
 3.70 
 3.68 
 3.68 
 3.60 
 
 3.55 
 3.60 
 3.82 
 3.61 
 3.52 
 
 3.45 
 3.48 
 3.50 
 3.44 
 3.43 
 3.51 
 
 3.11 
 3.21 
 3.31 
 3.31 
 3.34 
 
 3.38 
 3.58 
 4.73 
 3.96 
 3.66 
 
 3.56 
 3.55 
 3.52 
 3.47 
 
 3.98 
 3.86 
 3.80 
 3.90 
 3.74 
 
 3.70 
 
 3.70 
 3.68 
 3.65 
 3.99 
 
 3.76 
 3.94 
 3.98 
 3.20 
 3:50 
 3.50 
 
 3.78 
 5.62 
 4.26 
 3.98 
 4.00 
 
 3.80 
 3.81 
 3.80 
 3.60 
 3.75 
 
 3.66 
 3.52 
 3.53 
 3.60 
 3.57 
 
 3.62 
 3.51 
 3.42 
 3.32 
 3.25 
 
 3.29 
 3.53 
 3.48 
 3.58 
 3.45 
 
 3.45 
 
 3.98 
 4.92 
 4.32 
 3.78 
 3.64 
 
 
 5.16 
 4.08 
 4.73 
 4.08 
 3.92 
 
 3.67 
 
 3.60 
 3.58 
 3.55 
 3.52 
 
 3.45 
 3.52 
 3.48 
 3.47 
 3.50 
 
 3.48 
 4.24 
 3.55 
 3.42 
 3.94 
 3.80 
 
 3.54 
 3.55 
 3.55 
 3.50 
 3.50 
 
 3.40 
 3.40 
 3.40 
 3,40 
 3.35 
 
 3.30 
 3.25 
 3.20 
 3.20 
 3.20 
 
 "*3." 80* 
 
 3.86 
 3.75 
 
 3.32 
 3.32 
 3.40 
 3.47 
 3.39 
 
 3.51 
 3.80 
 4.15 
 3.83 
 3.69 
 
 3.66 
 3.64 
 3.61 
 3.93 
 3.96 
 
 3.67 
 
 17 
 
 3.53 
 
 18 
 
 3.47 
 
 19 
 
 3.54 
 
 20 : 
 
 4.17 
 
 21 
 
 4.58 
 
 22 
 
 
 
 5.73 
 
 23 
 
 
 
 5.85 
 
 24 . ... 
 
 
 
 7.05 
 
 25 
 
 
 
 6.05 
 
 26 
 
 
 
 4.80 
 
 27.. 
 
 "*3."3i" 
 
 3.30 
 
 3.55 
 3.58 
 3.68 
 4.06 
 3.76 
 
 4.05 
 
 28 
 
 3.70 
 
 29 
 
 3.62 
 
 30 
 
 3.60 
 
 31 
 
 3.59 
 
 
 
 Note.— Gage heights for September affected by flow of water in float-well, but results are fair. Gage 
 heights Oct. 1-28 not published because unreliable. 
 
 Daily discharge, in second-feet, of South Fork of Wailua River above Waiehu Falls, near 
 
 Lihue, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 115.0 
 123.0 
 126.0 
 126.0 
 177.0 
 
 105.0 
 105.0 
 148.0 
 159.0 
 137.0 
 
 137.0 
 110.0 
 81.2 
 154.0 
 105.0 
 
 90.0 
 90.0 
 85.6 
 85.6 
 68.0 
 
 59.0 
 68.0 
 
 120:0 
 
 70.2 
 53.6 
 
 42.5 
 47.0 
 50.0 
 41.0 
 39.5 
 51.8 
 
 47.0 
 41.0 
 38.0 
 32.6 
 27.8 
 
 23.0 
 
 26.6 
 27.8 
 32.6 
 32.6 
 
 18.0 
 7.4 
 5.0 
 4.5 
 4.5 
 
 5.8 
 14.0 
 24.2 
 24.2 
 27.8. 
 
 32.6 
 64.4 
 442.0 
 157.0 
 81.2 
 
 60.8 
 59.0 
 53.6 
 45.5 
 
 53.6 
 44.0 
 50.0 
 68.0 
 30.2 
 
 32.6 
 
 45.5 
 
 60.8 
 
 398.0 
 
 311.0 
 
 590.0 
 490.0 
 990.0 
 406.0 
 237.0 
 
 165.0 
 131.0 
 115.0 
 142.0 
 100.0 
 
 90.0 
 90.0 
 85.6 
 79.0 
 168.0 
 
 105.0 
 154.0 
 165.0 
 13.0 
 50.0 
 50.0 
 
 47.0 
 
 38.0 
 35.0 
 68.0 
 64.4 
 
 156.0 
 510.0 
 200.0 
 262.0 
 171.0 
 
 126.0 
 95.0 
 74.6 
 81.2 
 59.0 
 
 110.0 
 798.0 
 259.0 
 165.0 
 171.0 
 
 115.0 
 118.0 
 115.0 
 68.0 
 102.0 
 
 81.2 
 53.6 
 55.4 
 68.0 
 62.6 
 
 59.0 
 59.0 
 
 76.8 
 70.2 
 79.0 
 
 35.0 
 
 33.8 
 68.0 
 50.0 
 51.8 
 
 53.6 
 38.0 
 64.4 
 100.0 
 197.0 
 
 72.4 
 51.8 
 38.0 
 25.4 
 18.0 
 
 22.0 
 
 55.4 
 47.0 
 64.4 
 42.5 
 
 42.5 
 165.0 
 518.0 
 281.0 
 110.0 
 
 76.8 
 
 62.6 
 53.6 
 62.6 
 90.0 
 92.5 
 
 68.0 
 53.6 
 79.0 
 134.0 
 57.2 
 
 45.5 
 41.0 
 156.0 
 102.0 
 76.8 
 
 73.0 
 69.2 
 65.4 
 61.7 
 57.9 
 
 54.1 
 50.3 
 46.7 
 42.9 
 39.2 
 
 35.4 
 31.7 
 28.0 
 24.2 
 23.0 
 
 25.4 
 22.0 
 17.0 
 33.8 
 59.0 
 
 30.2 
 59.0 
 
 48.5 
 36.5 
 126.0 
 
 217.0 
 128.0 
 414.0 
 1,080.0 
 550.0 
 
 614.0 
 197.0 
 442.0 
 197.0 
 148.0 
 
 135.0 
 123.0 
 110.0 
 97.2 
 84.5 
 
 71.8 
 59.0 
 64.4 
 85.6 
 190.0 
 105.0 
 
 74.6 
 47.0 
 35.0 
 59.0 
 68.0 
 
 64.4 
 
 57.2 
 55.4 
 50.0 
 44.0 
 
 53.6 
 
 81.2 
 139.0 
 181.0 
 110.0 
 
 83.4 
 68.0 
 64.4 
 59.0 
 53.6 
 
 42.5 
 53.6 
 47.0 
 45.5 
 50.0 
 
 47.0 
 251.0 
 59.0 
 38.0 
 154.0 
 115.0 
 
 120.0 
 137.0 
 142.0 
 142.0 
 137.0 
 
 255.0 
 142.0 
 151.0 
 123.0 
 95.0 
 
 95.0 
 
 76.8 
 55.4 
 35.0 
 46.0 
 
 57.2 
 59.0 
 59.0 
 50.0 
 50.0 
 
 35.0 
 35.0 
 35.0 
 35.0 
 29.0 
 
 23.0 
 
 18.0 
 13.0 
 13.0 
 13.0 
 
 *ii5."6" 
 
 131.0 
 102.0 
 
 81.2 
 
 68.0 
 68.0 
 64.4 
 165.0 
 
 92.5 
 
 81.2 
 
 273.0 
 
 237.0 
 
 83.4 
 
 66.2 
 55.4 
 44.0 
 39.5 
 35.0 
 
 25.4 
 25.4 
 35.0 
 45.5 
 33.8 
 
 51.8 
 115.0 
 220.0 
 123.0 
 
 87.8 
 
 81.2 
 
 76.8 
 
 70.2 
 
 151.0 
 
 159.0 
 
 197.0 
 
 2 
 
 1,220:0 
 
 1,320.0 
 462.0 
 
 3 
 
 4 
 
 5 
 
 244.0 
 
 6 
 
 174.0 
 
 7 
 
 151.0 
 
 8 
 
 422.0 
 
 9 
 
 210.0 
 
 10 
 
 145.0 
 
 11 
 
 134.0 
 
 12 
 
 112.0 
 
 13 
 
 100.0 
 
 14 
 
 79.0 
 
 15 
 
 68.0 
 
 16 
 
 83.4 
 
 17 
 
 55.4 
 
 18 
 
 45.5 
 
 19 
 
 57.2 
 
 20 
 
 227.0 
 
 21 
 
 382.0 
 
 22 
 
 842.0 
 
 23 
 
 890.0 
 
 24 
 
 1,500.0 
 
 25 
 
 975.0 
 
 26 
 
 470.0 
 
 27 
 
 187 
 
 28 
 
 90 
 
 29 
 
 72.4 
 
 30 
 
 68.0 
 
 31 
 
 66.2 
 
 
 
 Note. — Discharge interpolated for days for which gage heights are missing from June 16-28. 
 
68 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of South Fork of Wailua River above Waiehu Falls, near Lihue, Kauai, 
 
 for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January . . . 
 February. . 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September. 
 
 October 
 
 November. 
 December. 
 
 177.0 
 442.0 
 990.0 
 798.0 
 518.0 
 156.0 
 ,080.0 
 251.0 
 255.0 
 
 39.5 
 4.5 
 13.0 
 35.0 
 18.0 
 23.0 
 17.0 
 35.0 
 13.0 
 
 95.8 
 
 50.4 
 
 178.0 
 
 144.0 
 
 86.0 
 
 62.6 
 
 180.0 
 
 75.8 
 
 75.9 
 
 5,890 
 2,900 
 
 10,900 
 8,570 
 5,290 
 3,720 
 
 11, 100 
 4,660 
 4,520 
 
 273.0 
 ,500.0 
 
 25.4 
 45.5 
 
 91.8 
 356.0 
 
 5,460 
 21,900 
 
 The period . 
 
 84,900 
 
 Note.— No record Oct. 1-2 
 
 LIHUE DITCH NEAR LIHUE, KAUAI. 
 
 Location. — About 5 miles northwest of Lihue, at point where Kauai Electric Co.'s 
 
 power line crosses the ditch. 
 Records available.— July 1, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read once each day, at 6 a. m.; datum unchanged. 
 Channel. — Probably permanent. 
 
 Discharge measurements. — Made by wading at various sections near gage. 
 Accuracy. — Records good. 
 
 Discharge measurements of Lihue ditch near Lihue, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 10 
 
 W. V. Hardy 
 
 Feet. 
 1.12 
 1.54 
 
 Sec.-ft. 
 7.57 
 
 Nov. 13 
 
 
 8.96 
 
 
 
 
 Daily gage height, in feet, of Lihue ditch near Lihue, Kauai, for 1912. 
 [Mori, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.0 
 1.0 
 
 .9 
 
 .9 
 
 .9 
 
 .9 
 
 .9 
 
 .9 
 1.0 
 1.0 
 
 1.0 
 .95 
 .95 
 
 .85 
 .85 
 
 .85 
 .85 
 .85 
 .85 
 .85 
 
 1.4 
 1.4 
 1.4 
 1.4 
 1.4 
 
 1.4 
 1.1 
 1.1 
 1.1 
 1.1 
 
 1.25 
 
 1.3 
 
 1.3 
 
 1.3 
 
 1.3 
 
 0,9 
 1.1 
 1.05 
 1.1 
 
 1.0 
 1.0 
 1.0 
 1.2 
 1.2 
 
 1.2 
 
 1.2 
 
 .6 
 
 .6 
 
 .6 
 
 1.4 
 1.4 
 1.5 
 1.5 
 1.5 
 
 1.5 
 
 1.45 
 
 1.5 
 
 1.5 
 
 1.4 
 
 1.4 
 1.4 
 1.4 
 1.5 
 1.5 
 
 1.5 
 1.4 
 1.4 
 1.4 
 1.4 
 
 1.6 
 
 1.55 
 
 1.55 
 
 1.6 
 
 1.6 
 
 1.5 
 1.5 
 1.5 
 1.6 
 1.6 
 
 1.55 
 1.5 
 1.5 
 1.6 
 1.6 
 
 1.5 
 1.5 
 1.5 
 1.5 
 1.5 
 
 1.55 
 
 1.55 
 
 1.5 
 
 1.5 
 
 1.5 
 
 1.5 
 1.6 
 1.6 
 1.6 
 1.6 
 
 1.6 
 1.6 
 1.6 
 1.6 
 
 1.5 
 
 1.65 
 
 1.6 
 
 1.6 
 
 1.6 
 
 1.5 
 1.5 
 1.5 
 1.5 
 1.55 
 
 1.6 
 1.6 
 1.6 
 1.6 
 1.6 
 
 1.6 
 
 1.6 
 
 1.6 
 
 1.65 
 
 1.6 
 
 1.6 
 1.6 
 1.6 
 1.6 
 1.6 
 
 1.65 
 
 1.65 
 
 1.6 
 
 1.6 
 
 1.6 
 
 1.6 
 
 1.6 
 
 1.6 
 
 1.55 
 
 1.5 
 
 1.5 
 
 1.45 
 
 1.45 
 
 1.45 
 
 1.45 
 
 1.45 
 1.45 
 1.45 
 1.45 
 1.5 
 
 1.55 
 1.50 
 1.60 
 1.55 
 1.60 
 
 1.60 
 1.60 
 1.60 
 1.55 
 1.70 
 
 1.70 
 1.65 
 1.65 
 1.65 
 1.65 
 
 1.65 
 1.65 
 1.65 
 1.70 
 1.65 
 
 1.55 
 1.60 
 1.60 
 1.60 
 1.70 
 
 1.70 
 1.65 
 1.65 
 1.66 
 1.65 
 
 1.62 
 1.50 
 1.52 
 1.50 
 1.50 
 
 1.45 
 
 1.45 
 1.50 
 1.55 
 1.60 
 
 1.55 
 
 2 : 
 
 
 1.60 
 
 3 
 
 
 1.60 
 
 4 
 
 
 .70 
 
 5 
 
 
 
 6 
 
 0.9 
 .9 
 .9 
 .9 
 .9 
 
 .9 
 .9 
 .9 
 .9 
 .9 
 
 .9 
 .9 
 .9 
 .9 
 1.1 
 
 
 7 
 
 
 8 
 
 
 9 
 
 
 10 
 
 
 11 
 
 
 12 
 
 
 13 
 
 
 14 
 
 
 15 
 
 
 16 
 
 
 17 
 
 1.49 
 
 18 
 
 1.49 
 
 19 
 
 1.55 
 
 20 
 
 1.70 
 
ISLAND OF KAUAI. 
 
 69 
 
 Daily gage height, in feet, of Lihue ditch near Lihue, Kauai, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 1.1 
 1.1 
 1.4 
 1.4 
 1.4 
 
 1.2 
 1.2 
 1.2 
 1.2 
 1.2 
 1.2 
 
 0.85 
 
 1.1 
 
 1.1 
 
 1.2 
 
 1.2 
 
 1.2 
 1.2 
 1.2 
 
 1.4 
 
 " "6.'9" 
 .9 
 .9 
 
 .9 
 .9 
 .9 
 .9 
 .9 
 .9 
 
 0.6 
 .6 
 .6 
 
 1.4 
 
 1.4 
 
 1.4 
 
 1.35 
 
 1.35 
 
 1.4 
 
 1.4 
 
 1.5 
 1.5 
 1.5 
 1.5 
 1.5 
 
 1.5 
 1.5 
 1.6 
 1.6 
 1.6 
 1.6 
 
 1.55 
 
 1.6 
 
 1.6 
 
 1.5 
 
 1.55 
 
 1.5 
 
 1.5 
 
 1.5 
 
 1.55 
 
 1.55 
 
 1.55 
 
 1.55 
 
 1.55 
 
 1.6 
 
 1.6 
 
 1.55 
 
 1.6 
 
 1.6 
 
 1.6 
 
 1.6 
 
 1.65 
 
 1.65 
 
 1.65 
 
 1.5 
 1.5 
 1.5 
 1.5 
 1.4 
 
 1.4 
 
 1.4 
 
 1.4 
 
 1.55 
 
 1.6 
 
 1.65 
 1.65 
 1.65 
 1.60 
 1.60 
 
 1.70 
 1.70 
 .95 
 1.65 
 1.50 
 1.50 
 
 1.63 
 1.65 
 1.36 
 1.36 
 1.36 
 
 "i.45' 
 
 1.50 
 
 22 
 
 1 
 
 1 
 1 
 
 1 
 
 1 
 1 
 1 
 1 
 1 
 
 6 
 6 
 6 
 
 55 
 
 55 
 
 55 
 
 55 
 
 5 
 
 5 
 
 1.60 
 
 23 
 
 1.45 
 
 24 
 
 1.55 
 
 25 
 
 1.35 
 
 26 
 
 1.30 
 
 27 
 
 1.30 
 
 28 
 
 1.30 
 
 29 
 
 1.30 
 
 30 
 
 1.30 
 
 31 
 
 1.25 
 
 
 
 
 Note.— Ditch dry Jan. 1-5, Mar. 16-22, Apr. 5-10, July 15, Nov. 26-29, and Dec. 5-16. 
 
 Daily discharge, in second-feet, of Lihue ditch near Lihue, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 5.8 
 5.8 
 5.1 
 5.1 
 5.1 
 
 5.1 
 5.1 
 5.1 
 5.8 
 5.8 
 
 5.8 
 5.4 
 5.4 
 4.8 
 4.8 
 
 4.8 
 4.8 
 4.8 
 
 4.8 
 4.8 
 
 4.8 
 6.5 
 6.5 
 
 7.2 
 7.2 
 
 7.2 
 7.2 
 
 7.2 
 8.8 
 
 8.8 
 8.8 
 8.8 
 8.8 
 8.8 
 
 8.8 
 6.5 
 6.5 
 6.5 
 6.5 
 
 7.6 
 8.0 
 8.0 
 8.0 
 8.0 
 
 "5.Y 
 
 5.1 
 5.1 
 
 5.1 
 5.1 
 5.1 
 5.1 
 5.1 
 5.1 
 
 5.1 
 6.5 
 6.2 
 6.5 
 
 5.8 
 5.8 
 5.8 
 7.2 
 7.2 
 
 7.2 
 7.2 
 3.1 
 3.1 
 3.1 
 
 3.1 
 3.1 
 3.1 
 
 8.8 
 8.8 
 
 8.8 
 8.4 
 8.4 
 8.8 
 8.8 
 
 8.8 
 8.8 
 9.6 
 9.6 
 9.6 
 
 9.6 
 9.2 
 9.6 
 9.6 
 
 8.8 
 
 8.8 
 8.8 
 8.8 
 9.6 
 9.6 
 
 9.6 
 8.8 
 8.8 
 8.8 
 
 8.8 
 
 9.6 
 9.6 
 9.6 
 9.6 
 9.6 
 
 9.6 
 9.6 
 10.4 
 10.4 
 10.4 
 10.4 
 
 10.4 
 10.0 
 10.0 
 10.4 
 10.4 
 
 9.6 
 
 9.6 
 
 9.6 
 
 10.4 
 
 10.4 
 
 10.0 
 
 9.6 
 
 9.6 
 
 10.4 
 
 10.4 
 
 9.6 
 9.6 
 9.6 
 9.6 
 9.6 
 
 10.0 
 10.4 
 10.4 
 10.4 
 10.0 
 
 10.0 
 
 10.0 
 
 10.0 
 
 9.6 
 
 9.6 
 
 10.0 
 10.0 
 9.6 
 9.6 
 9.6 
 
 9.6 
 10.4 
 10.4 
 10.4 
 10.4 
 
 10.4 
 10.4 
 10.4 
 10.4 
 
 9.6 
 10.8 
 10.4 
 10.4 
 10.4 
 
 10.4 
 10.4 
 
 9.6 
 10.0 
 
 9.6 
 
 9.6 
 9.6 
 10.0 
 10.0 
 10.0 
 10.0 
 
 9.6 
 9.6 
 9.6 
 9.6 
 10.0 
 
 10.4 
 10.4 
 10.4 
 10.4 
 10.4 
 
 10.4 
 10.4 
 10.4 
 10.8 
 10.4 
 
 10.4 
 10.4 
 10.4 
 10.4 
 10.4 
 
 10.0 
 
 10.4 
 10.4 
 10.0 
 10.4 
 
 10.4 
 10.4 
 10.4 
 10.8 
 10.8 
 10.8 
 
 10.8 
 10.8 
 10.4 
 10.4 
 10.4 
 
 10.4 
 10.4 
 10.4 
 10.0 
 9.6 
 
 9.6 
 9.2 
 9.2 
 9.2 
 9.2 
 
 9.2 
 9.2 
 9.2 
 9.2 
 9.6 
 
 9.6 
 9.6 
 9.6 
 
 9.6 
 
 8.8 
 
 8.8 
 8.8 
 8.8 
 10.0 
 10.4 
 
 10.0 
 9.6 
 10.4 
 10.0 
 10.4 
 
 10.4 
 10.4 
 10.4 
 10.0 
 11.2 
 
 11.2 
 10.8 
 10.8 
 10.8 
 10.8 
 
 10.8 
 10.8 
 10.8 
 11.2 
 10.8 
 
 10.8 
 10.8 
 10.8 
 10.4 
 10.4 
 
 11.2 
 
 11.2 
 
 5.4 
 
 10.8 
 
 9.6 
 
 9.6 
 
 10.0 
 10.4 
 10.4 
 10.4 
 11.2 
 
 11.2 
 10.8 
 10.8 
 10.9 
 10.8 
 
 10.6 
 9.6 
 9.8 
 9.6 
 9.6 
 
 9.2 
 
 9.2 
 
 9.6 
 
 10.0 
 
 10.4 
 
 10.6 
 
 10.8 
 8.5 
 
 8.5 
 8.5 
 
 ""§.2 
 
 10.0 
 
 2 
 
 
 10.4 
 
 3 
 
 
 10.4 
 
 4 
 
 
 3.7 
 
 5 
 
 
 
 6 
 
 5.1 
 5.1 
 5.1 
 5.1 
 5.1 
 
 5.1 
 5.1 
 5.1 
 5.1 
 5.1 
 
 5.1 
 5.1 
 5.1 
 5.1 
 6.5 
 
 6.5 
 6.5 
 8.8 
 
 8.8 
 8.8 
 
 7.2 
 7.2 
 7.2 
 7.2 
 7.2 
 7.2 
 
 
 7 
 
 
 8 
 
 
 9 
 
 
 10 
 
 
 11 
 
 
 12 
 
 
 13 
 
 
 14 
 
 
 15 
 
 
 16 
 
 
 17 
 
 9.5 
 
 18 
 
 9.5 
 
 19 
 
 10.0 
 
 20 
 
 11.2 
 
 21 
 
 9.6 
 
 22 
 
 10.4 
 
 23 
 
 9.2 
 
 24 
 
 10.0 
 
 25 
 
 8.4 
 
 26 
 
 8.0 
 
 27 
 
 8.0 
 
 28 
 
 8.0 
 
 29 
 
 8.0 
 
 30 
 
 8.0 
 
 31 
 
 7.6 
 
 
 
 Note.— Ditch dry Jan. 1-5, Mar. 16-22, Apr. 5-10, July 15, Nov. 26-29, and Dec. 5-16. 
 Monthly discharge of Lihue ditch near Lihue, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 6-31 
 
 February 
 
 March 1-15, 23-31... 
 
 April 1-4, 11-30 
 
 May 
 
 June 
 
 July 1-14, 16 -31 
 
 August 
 
 September 
 
 October 
 
 November 1-25, 30. . 
 December 1-4, 17-31 
 
 The year 
 
 8.8 
 
 8.8 
 10.4 
 10.4 
 10.8 
 10.8 
 10.8 
 11.2 
 11.2 
 11.2 
 
 5.1 
 4.8 
 5.1 
 3.1 
 8.8 
 9.6 
 9.6 
 9.6 
 8.8 
 5.4 
 8.5 
 3.7 
 
 6.17 
 
 5.74 
 
 6.85 
 
 6.25 
 
 9.43 
 
 9.97 
 
 10.10 
 
 10.30 
 
 9.68 
 
 10.40 
 
 10.00 
 
 8.94 
 
 318 
 330 
 326 
 297 
 580 
 593 
 601 
 633 
 576 
 640 
 517 
 337 
 
 11.2 
 
 3.1 
 
 8.76 
 
 5,750 
 
 Note.— Ditch dry Jan. 1-5, Mar. 16-22, Apr. 5-10, July 15, Nov. 26-29, Dec. 5-16. 
 Mean for month is mean of actual number of days when ditch carried water. Mean for year is mean of 
 actual number of days when ditch carried water. 
 
70 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 HANAMAULU DITCH AT SIPHON NEAR LIHUE, KATJAI. 
 
 Location. — About 6 miles northwest of Lihue, in flume 180 feet above point at which 
 the Kauai Electric Co.'s power line crosses the South Fork of Wailua River. 
 
 Records available. — July 1, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read once daily at 6 a. m. September 30, 1911, a gage was 
 installed on left side of flume, 18 feet from its upper end. 
 
 Channel. — Wooden flume. 
 
 Discharge measurements. — Made in flume. 
 
 Accuracy. — Records good. 
 
 Discharge measurements o/Hanamaulu ditch at siphon near Lihue, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 10 
 
 W. V. Hardy 
 
 Feet. 
 0.80 
 1.52 
 2.28 
 
 Sec.-ft. 
 6.22 
 
 Do .. 
 
 do. ..... . 
 
 20.8 
 
 Nov. 13 
 
 
 38.8 
 
 
 
 
 Daily gage height, in feet, of Hanamaulu ditch at siphon near Lihue, Kauai, for 1912. 
 
 [Mori, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 .70 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.85 
 
 1.85 
 1.80 
 1.80 
 1.80 
 2.10 
 
 2.10 
 2.10 
 2.10 
 2.30 
 2.30 
 2.20 
 
 2.50 
 2.50 
 2.50 
 2.50 
 2.45 
 
 2.50 
 2.50 
 2.45 
 2.50 
 2.40 
 
 2.40 
 2.40 
 2.40 
 2.40 
 2.40 
 
 2.40 
 2.40 
 2.35 
 2.35 
 2.35 
 
 2.35 
 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.50 
 2.20 
 2.20 
 2.40 
 
 2.40 
 2.40 
 2.50 
 2.40 
 2.40 
 
 2.40 
 2.30 
 2.30 
 2.30 
 1.30 
 
 1.35 
 1.30 
 1.30 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.30 
 1.30 
 1.30 
 
 1.30 
 2.00 
 2.00 
 2.00 
 2.00 
 
 1.80 
 1.80 
 1.80 
 1.80 
 1.80 
 1.80 
 
 1.80 
 1.80 
 1.80 
 1.85 
 2.15 
 
 2.15 
 2.30 
 2.25 
 2.15 
 2.15 
 
 2.10 
 
 2.05 
 2.10 
 2.10 
 2.10 
 
 2.15 
 2.25 
 1.40 
 1.40 
 1.40 
 
 1.40 
 1.40 
 1.40 
 2.25 
 2.25 
 
 2.20 
 2.20 
 2.20 
 2.20 
 2.20 
 
 2.20 
 2.20 
 2.50 
 2.50 
 2.50 
 
 2.50 
 
 2.45 
 2.50 
 2.50 
 2.40 
 
 2.40 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.50 
 2.50 
 2.45 
 2.40 
 2.40 
 
 2.50 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.55 
 2.55 
 2.55 
 2,55 
 2.50 
 2.50 
 
 2.50 
 2.40 
 2.40 
 2.40 
 2.40 
 
 2.40 
 2.40 
 2.40 
 2.40 
 2.40 
 
 2.40 
 2.40 
 2.40 
 2.40 
 2.40 
 
 2.40 
 2.45 
 2.30 
 2.30 
 2.30 
 
 2.45 
 2.45 
 2.45 
 2.45 
 2.40 
 
 2.40 
 2.40 
 2.40 
 2.40 
 2.40 
 
 2.40 
 2.40 
 2.30 
 2.30 
 2.30 
 
 2.35 
 
 2..40 
 2.40 
 2.45 
 2.45 
 
 2.45 
 2.45 
 2.45 
 2.45 
 2.45 
 
 2.20 
 2.45 
 2.45 
 2.45 
 2.45 
 
 2.45 
 2.40 
 2.40 
 2.40 
 2.40 
 
 2.40 
 2.45 
 2.45 
 2.40 
 2.45 
 2.45 
 
 2.40 
 2.40 
 2.25 
 2.25 
 2.40 
 
 2.45 
 
 2.45 
 2.45 
 2.50 
 2.50 
 
 2.50 
 
 2.40 
 2.35 
 2.35 
 2.50 
 
 2.40 
 2.45 
 2.40 
 2.40 
 2.35 
 
 2.35 
 
 2.40 
 2.40 
 2.40 
 2.45 
 
 2.45 
 2.45 
 2.45 
 2.45 
 2.45 
 2.45 
 
 2.45 
 2.45 
 2.45 
 2.45 
 2.45 
 
 2.45 
 2.45 
 2.45 
 2.40 
 2.30 
 
 2.30 
 
 2.25 
 2.25 
 2.25 
 2.25 
 
 2.45 
 2.40 
 2.40 
 2.40 
 2.45 
 
 2.45 
 2.45 
 2.40 
 2.40 
 2.40 
 
 2.40 
 2.40 
 2.40 
 2.40 
 2.45 
 
 2.45 
 
 2.40 
 2.45 
 2.45 
 2.45 
 
 2.45 
 2.45 
 2.45 
 2.45 
 2.45 
 
 2.50 
 2.45 
 2.45 
 2.35 
 2.35 
 
 2.35 
 
 2.45 
 2.45 
 2.45 
 2.45 
 
 2.45 
 2.45 
 2.45 
 2.40 
 2.40 
 
 2.45 
 2.45 
 2.45 
 2.43 
 2.45 
 2.45 
 
 2.30 
 2.15 
 2.15 
 2.25 
 2.45 
 
 2.45 
 2.40 
 2.45 
 2.45 
 2.45 
 
 2.43 
 
 2.25 
 2.26 
 2.25 
 2.25 
 
 2.25 
 
 2.25 
 2.25 
 2.30 
 2.45 
 
 2.45 
 2.40 
 1.30 
 1.30 
 1.30 
 
 (a) 
 
 (a) 
 
 2.40 
 
 2.45 
 
 2.30 
 
 2.25 
 
 2 
 
 2.30 
 
 3 
 
 2.30 
 
 4 
 
 1.30 
 
 5 
 
 .90 
 
 6 
 
 7 
 
 .90 
 .90 
 
 8 
 
 1.00 
 
 9 
 
 .90 
 
 10 
 
 .90 
 
 11 
 
 .90 
 
 12 
 
 .90 
 
 13 
 
 2.05 
 
 14 
 
 2.00 
 
 15 
 
 2.00 
 
 16 
 
 2.00 
 
 17 
 
 2.05 
 
 18 
 
 2.05 
 
 19 
 
 2.25 
 
 20 
 
 2.45 
 
 21 
 
 2.30 
 
 22 
 
 2.30 
 
 23 
 
 2.30 
 
 24 
 
 2.40 
 
 25 
 
 2.30 
 
 26 
 
 2.25 
 
 27 
 
 2.25 
 
 28 
 
 2.25 
 
 29 
 
 2.25 
 
 30 
 
 2.20 
 
 31 
 
 2.20 
 
 
 
 Ditch dry Nov. 26-27. 
 
ISLAND OF KAUAI. 71 
 
 Daily discharge, in second-feet, of Hanamaulu ditch at siphon near Lihue, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 11.0 
 11.0 
 11.0 
 11.0 
 11.0 
 
 11.0 
 11.0 
 11.0 
 11.0 
 11.0 
 
 5.0 
 11.0 
 11.0 
 11.0 
 11.0 
 
 11.0 
 11.0 
 11.0 
 11.0 
 28.0 
 
 28.0 
 27.0 
 27.0 
 27.0 
 34.0 
 
 34.0 
 34.0 
 34.0 
 39.0 
 39.0 
 37.0 
 
 44.0 
 44.0 
 44.0 
 44.0 
 43.0 
 
 44.0 
 44.0 
 43.0 
 44.0 
 42.0 
 
 42.0 
 42.0 
 42.0 
 42.0 
 42.0 
 
 42.0 
 42.0 
 40.5 
 40.5 
 40.5 
 
 40.5 
 44.0 
 44.0 
 44.0 
 44.0 
 
 44.0 
 37.0 
 37.0 
 42.0 
 
 42.0 
 42.0 
 44.0 
 42.0 
 42.0 
 
 42.0 
 39.0 
 39.0 
 39.0 
 15.0 
 
 16.0 
 
 15.0 
 
 15.0 
 
 9.2 
 
 9.2 
 
 9.2 
 
 9.2 
 
 15.0 
 
 15.0 
 
 15.0 
 
 15.0 
 32.0 
 32.0 
 32.0 
 32.0 
 
 27.0 
 27.0 
 27.0 
 27.0 
 27.0 
 27.0 
 
 27.0 
 27.0 
 27.0 
 28.0 
 35.5 
 
 35.5 
 39.0 
 38.0 
 35.5 
 35.5 
 
 34.0 
 33.0 
 34.0 
 34.0 
 34.0 
 
 35.5 
 38.0 
 17.0 
 17.0 
 17.0 
 
 17.0 
 17.0 
 17.0 
 38.0 
 38.0 
 
 37.0 
 37.0 
 37.0 
 37.0 
 37.0 
 
 37.0 
 37.0 
 44.0 
 44.0 
 44.0 
 
 44.0 
 43.0 
 44.0 
 44.0 
 42.0 
 
 42.0 
 
 44.0 
 44.0 
 44.0 
 44.0 
 
 44.0 
 44.0 
 43.0 
 42.0 
 42.0 
 
 44.0 
 44.0 
 44.0 
 44.0 
 44.0 
 
 45.0 
 45.0 
 45.0 
 45.0 
 44.0 
 44.0 
 
 44.0 
 42.0 
 42.0 
 42.0 
 42.0 
 
 42.0 
 42.0 
 42.0 
 42.0 
 42.0 
 
 42.0 
 
 42.0 
 42.0 
 42.0 
 42.0 
 
 42.0 
 43.0 
 39.0 
 39.0 
 39.0 
 
 43.0 
 43.0 
 43.0 
 43.0 
 42.0 
 
 42.0 
 42.0 
 42.0 
 42.0 
 42.0 
 
 42.0 
 42.0 
 39.0 
 39.0 
 39.0 
 
 40.5 
 42.0 
 42.0 
 43.0 
 43.0 
 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 
 37.0 
 43.0 
 43.0 
 43.0 
 43.0 
 
 43.0 
 42.0 
 42.0 
 42.0 
 42.0 
 
 42.0 
 43.0 
 43.0 
 42.0 
 43.0 
 43.0 
 
 42.0 
 42.0 
 38.0 
 38.0 
 42.0 
 
 43.0 
 43.0 
 43.0 
 44.0 
 44.0 
 
 44.0 
 42.0 
 40.5 
 40.5 
 44.0 
 
 42.0 
 43.0 
 42.0 
 42.0 
 40.5 
 
 40.5 
 42.0 
 42.0 
 42.0 
 43.0 
 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 
 43.0 
 43.0 
 43.0 
 42.0 
 39.0 
 
 39.0 
 38.0 
 38.0 
 38.0 
 38.0 
 
 43.0 
 42.0 
 42.0 
 42.0 
 43.0 
 
 43.0 
 43.0 
 42.0 
 42.0 
 42.0 
 
 42.0 
 
 42.0 
 42.0 
 42.0 
 43.0 
 
 43.0 
 42.0 
 43.0 
 43.0 
 43.0 
 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 
 44.0 
 43.0 
 43.0 
 40.5 
 40.5 
 
 40.5 
 43.0 
 43.0 
 43.0 
 43.0 
 
 43.0 
 43.0 
 43.0 
 42.0 
 42.0 
 
 43.0 
 43.0 
 43.0 
 42.6 
 43.0 
 43.0 
 
 39.0 
 35.5 
 35.5 
 38.0 
 43.0 
 
 43.0 
 42.0 
 43.0 
 43.0 
 43.0 
 
 42.6 
 38.0 
 38.2 
 38.0 
 38.0 
 
 38.0 
 38.0 
 38.0 
 39.0 
 43.0 
 
 43.0 
 42.0 
 15.0 
 15.0 
 15.0 
 
 Dry. 
 
 Dry. 
 42.0 
 43.0 
 39.0 
 
 38.0 
 
 2 
 
 39.0 
 
 3 
 
 39.0 
 
 4 
 
 15.0 
 
 5 
 
 7.6 
 
 6 
 
 7.6 
 
 7 
 
 7.6 
 
 8 
 
 9.2 
 
 9 
 
 7.6 
 
 10 
 
 7.6 
 
 11 
 
 7.6 
 
 12 
 
 7.6 
 
 13 
 
 33.0 
 
 14 
 
 32.0 
 
 15 
 
 32.0 
 
 16 
 
 32.0 
 
 17 
 
 33.0 
 
 18 
 
 33.0 
 
 19 
 
 38.0 
 
 20 
 
 43.0 
 
 21 
 
 39.0 
 
 22 
 
 39.0 
 
 23 
 
 39.0 
 
 24 
 
 42.0 
 
 25 
 
 39.0 
 
 26 
 
 38.0 
 
 27 
 
 38.0 
 
 28 
 
 38.0 
 
 29 
 
 38.0 
 
 30 
 
 37.0 
 
 31 
 
 37.0 
 
 
 
 Monthly discharge of Hanamaulu ditch at siphon near Lihue, Kauai, for 1912. 
 
 Month. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November a 
 
 December 
 
 The period 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 39.0 
 44.0 
 44.0 
 39.0 
 45.0 
 44.0 
 43.0 
 44.0 
 43.0 
 44.0 
 43.0 
 43.0 
 
 45.0 
 
 Minimum. 
 
 5.0 
 37.0 
 
 9.2 
 17.0 
 37.0 
 39.0 
 37.0 
 38.0 
 38.0 
 40.5 
 15.0 
 
 7.6 
 
 5.0 
 
 Mean. 
 
 19.1 
 42.3 
 26.4 
 31.1 
 43.4 
 41.9 
 42.0 
 42.2 
 41.7 
 42.7 
 37.5 
 28.8 
 
 &36.5 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1,170 
 2,430 
 1,620 
 1,850 
 2,670 
 2,490 
 2,580 
 2,590 
 2,480 
 2,630 
 2,080 
 1,770 
 
 26,400 
 
 Accu- 
 racy. 
 
 a Ditch dry Nov. 26-27. & Mean for year is mean for 364 days when ditch carried water. 
 
 NORTH FORK OF WAILXJA RIVER NEAR LIHUE, KAUAI. 
 
 Location. — About 8 miles northwest of Lihue, and 2 miles above the Kaholalele Falls. 
 Records available.— August 1, 1910, to October 28, 1910; December 28, 1910, to 
 
 December 31, 1912. 
 Drainage area. — 14.63 square miles. 
 Gage. — Friez automatic register; datum unchanged. 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made from a footbridge and wire suspension bridge. 
 Accuracy. — Record good. 
 
72 WATER RESOURCES OF HAW An, 1912. 
 
 Discharge measurements of North Fork of Wailua River near Lihue, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 18 
 
 W. V. Hardy 
 
 Feel. 
 0.45 
 2.40 
 .62 
 
 Sec.-ft. 
 19.4 
 
 Mar. 11 
 
 do 
 
 358 
 
 July 31 
 
 do 
 
 43.0 
 
 
 
 Daily gage height, in feet, of North Fork of Wailua River near Lihue, Kauai, for 1912. 
 
 [Mori, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.85 
 
 .86 
 
 .87 
 
 1.08 
 
 1.04 
 
 .98 
 
 .97 
 
 1.16 
 
 1.19 
 
 1.03 
 
 .96 
 .95 
 .96 
 1.23 
 .97 
 
 .90 
 .89 
 .88 
 .86 
 .86 
 
 .84 
 .81 
 .83 
 
 .78 
 
 .77 
 
 .76 
 .76 
 .74 
 .75 
 .75 
 .75 
 
 0.75 
 
 .75 
 .75 
 .60 
 .57 
 
 .59 
 .59 
 .54 
 
 .48 
 .47 
 
 .47 
 .46 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 
 .46 
 
 1.40 
 
 .80 
 
 .77 
 
 .77 
 .74 
 .73 
 .72 
 
 0.82 
 .69 
 .94 
 .70 
 .64 
 
 .65 
 
 .70 
 
 .72 
 
 1.66 
 
 1.66 
 
 1.98 
 1.90 
 2.95 
 1.82 
 1.44 
 
 1.20 
 
 1.16 
 
 1.08 
 
 .92 
 
 .92 
 
 .87 
 1.05 
 
 .90 
 1.14 
 1.64 
 
 1.00 
 .90 
 .86 
 .82 
 .84 
 .84 
 
 0.81 
 
 .78 
 .77 
 .95 
 .92 
 
 1.14 
 1.92 
 1.21 
 1.35 
 1.01 
 
 .92 
 .86 
 1.01 
 .98 
 .84 
 
 1.08 
 3.04 
 1.56 
 1.23 
 1.30 
 
 1.14 
 1.12 
 1.06 
 .93 
 1.01 
 
 .95 
 .85 
 .81 
 .80 
 .80 
 
 0.79 
 .79 
 .88 
 .92 
 .81 
 
 .78 
 .78 
 .84 
 .76 
 .76 
 
 .66 
 .60 
 .60 
 .82 
 .92 
 
 .61 
 .60 
 .60 
 .60 
 .60 
 
 .62 
 .65 
 .65 
 .72 
 ■ fe> 
 
 .60 
 .86 
 1.66 
 1.15 
 .72 
 .62 
 
 0.62 
 .65 
 .73 
 
 .84 
 .68 
 
 .66 
 .65 
 .68 
 .68 
 .68 
 
 ' .68 
 .68 
 .92 
 .72 
 .70 
 
 .70 
 .70 
 .70 
 .75 
 .70 
 
 .76 
 .70 
 .50 
 .82 
 .50 
 
 1.20 
 .90 
 
 .57 
 .50 
 .50 
 
 0.50 
 .52 
 
 .54 
 .56 
 
 .58 
 
 .60 
 .82 
 .61 
 .62 
 1.02 
 
 1.40 
 .82 
 1.74 
 2.93 
 2.00 
 
 1.28 
 1.96 
 1.20 
 1.01 
 1.00 
 
 1.06 
 .96 
 .91 
 
 1.04 
 .81 
 
 .96 
 .74 
 .65 
 .65 
 .72 
 .63 
 
 0.57 
 .50 
 .50 
 .49 
 .64 
 
 .70 
 .76 
 .82 
 .81 
 .60 
 
 .54 
 .50 
 .50 
 1.45 
 .89 
 
 .66 
 .60 
 .52 
 .50 
 .49 
 
 .50 
 .76 
 .59 
 .68 
 .60 
 
 .80 
 1.59 
 
 .81 
 
 .84 
 1.27 
 
 .92 
 
 0.93 
 .99 
 
 .88 
 .72 
 .60 
 
 1.25 
 .76 
 
 .68 
 .62 
 .58 
 
 .64 
 .58 
 .52 
 .49 
 .47 
 
 .57 
 .54 
 .47 
 .50 
 .51 
 
 .52 
 .76 
 .52 
 .47 
 .44 
 
 .42 
 .42 
 .44 
 .46 
 .53 
 
 0.76 
 .48 
 .82 
 .82 
 .80 
 
 .58 
 .70 
 .94 
 .68 
 .74 
 
 1.01 
 .83 
 .62 
 .61 
 .56 
 
 .57 
 
 .67 
 
 .69 
 
 1.06 
 
 1.06 
 
 1.17 
 .97 
 
 .88 
 .67 
 .84 
 
 1.32 
 
 .88 
 .97 
 .81 
 .77 
 .73 
 
 0.62 
 
 .58 
 .58 
 .56 
 
 ""."63" 
 1.12 
 
 1.08 
 
 .77 
 
 .68 
 .61 
 .55 
 .52 
 
 .58 
 
 .52 
 
 "i.'io" 
 
 1.37 
 .98 
 
 .85 
 
 .76 
 .63 
 .70 
 1.28 
 .98 
 
 1.42 
 
 2 
 
 3.12 
 
 3 
 
 3.52 
 
 4 
 
 2.33 
 
 5 
 
 1.67 
 
 6 
 
 1.32 
 
 7 
 
 1.19 
 
 8 
 
 1.81 
 
 9 
 
 1.25 
 
 10 
 
 1.09 
 
 11 
 
 .93 
 
 12 
 
 .86 
 
 13 
 
 .83 
 
 14 
 
 .77 
 
 15 
 
 .78 
 
 16 . .. 
 
 .82 
 
 17 
 
 .61 
 
 18 
 
 .60 
 
 19 
 
 1.10 
 
 20 
 
 1.06 
 
 21 
 
 1.36 
 
 22 
 
 1.63 
 
 23 
 
 1.77 
 
 24 
 
 3.14 
 
 25 
 
 1.92 
 
 26 
 
 1.44 
 
 27 
 
 1.17 
 
 28 
 
 1.03 
 
 29 
 
 .90 
 
 30 
 
 .86 
 
 31 
 
 .85 
 
 
 
 Note.— Low water gage heights previous to July 25 may be high by 0.1 to 0.3 on account of mud in float 
 well. No record Nov. 17-21. 
 
 Daily discharge, in second-feet, of North Fork of Wailua River near Lihue, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 54.5 
 55.6 
 56.7 
 82.4 
 77.2 
 
 69.6 
 68.4 
 93.4 
 97.6 
 75.9 
 
 67.2 
 66.0 
 67.2 
 104.0 
 68.4 
 
 44.0 
 44.0 
 44.0 
 30.0 
 27.9 
 
 29.3 
 29.3 
 25.8 
 21.8 
 21.2 
 
 21.2 
 20.6 
 20.0 
 20.0 
 20.0 
 
 51.2 
 38.1 
 64.8 
 39.0 
 33.6 
 
 34.5 
 
 39.0 
 
 41.0 
 
 179.0 
 
 179.0 
 
 255.0 
 234.0 
 571.0 
 215.0 
 137.0 
 
 50.1 
 47.0 
 46.0 
 66.0 
 62.4 
 
 90.6 
 239.0 
 100.0 
 123.0 
 
 73.3 
 
 62.4 
 55.6 
 73.3 
 69.6 
 53.4 
 
 48.0 
 48.0 
 57.8 
 62.4 
 50.1 
 
 47.0 
 
 47.0 
 53.4 
 45.0 
 45.0 
 
 35.4 
 30.0 
 30.0 
 51.2 
 62.4 
 
 31.8 
 34.5 
 42.0 
 53.4 
 37.2 
 
 35.4 
 34.5 
 37.2 
 37.2 
 37.2 
 
 37.2 
 37.2 
 62.4 
 41.0 
 39.0 
 
 23.0 
 24.4 
 25.8 
 27.2 
 28.6 
 
 30.0 
 51.2 
 30.9 
 31.8 
 74.6 
 
 130.0 
 51.2 
 196.0 
 563.0 
 260.0 
 
 27.9 
 23.0 
 23.0 
 22.4 
 33.6 
 
 39.0 
 45.0 
 51.2 
 50.1 
 30.0 
 
 25.8 
 23.0 
 23.0 
 138.0 
 58.9 
 
 63.6 
 
 70.8 
 57.8 
 41.8 
 30.0 
 
 106.0 
 45.0 
 37.2 
 31.8 
 28.6 
 
 33.6 
 28.6 
 24.4 
 22.4 
 21.2 
 
 45.0 
 21.8 
 51.2 
 51.2 
 49.0 
 
 28.6 
 39.0 
 64.8 
 37.2 
 43.0 
 
 73.3 
 52.3 
 31.8 
 30.9 
 27.2 
 
 31.8 
 28.6 
 28.6 
 27.2 
 29.0 
 
 30.9 
 32.7 
 
 87.8 
 82.4 
 46.0 
 
 37.2 
 30.9 
 26.5 
 24.4 
 28.6 
 
 133.0 
 
 2 
 
 638.0 
 
 3 
 
 809.0 
 
 4 
 
 356.0 
 
 5 
 
 181.0 
 
 6 
 
 117.0 
 
 7 
 
 97.6 
 
 8 
 
 212.0 
 
 9 
 
 106.0 
 
 10 
 
 83.7 
 
 11 
 
 63.6 
 
 12 
 
 55.6 
 
 13 
 
 52.3 
 
 14 
 
 46.0 
 
 15 
 
 47.0 
 
ISLAND OF KAUAI. 
 
 73 
 
 Daily discharge, in second-feet, of North Fork of Wailua River, near Lihue, Kauai, for 
 
 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 60.0 
 58.9 
 57.8 
 55.6 
 55.6 
 
 53.4 
 50.1 
 52.3 
 47.0 
 46.0 
 
 45.0 
 45.0 
 43.0 
 44.0 
 44.0 
 44.0 
 
 20.0 
 20.0 
 20.0 
 20.0 
 20.0 
 
 20.0 
 20.6 
 130.0 
 49.0 
 46.0 
 
 46.0 
 43.0 
 42.0 
 41.0 
 
 99^0 
 93.4 
 82.4 
 62.4 
 62.4 
 
 56.7 
 78.5 
 60.0 
 90.6 
 174.0 
 
 72.0 
 60.0 
 55.6 
 51.2 
 53.4 
 53.4 
 
 82.4 
 606.0 
 158.0 
 104.0 
 114.0 
 
 90.6 
 87.8 
 79.8 
 63.6 
 73.3 
 
 66.0 
 54.5 
 50.1 
 49.0 
 49.0 
 
 30.9 
 30.0 
 30.0 
 30.0 
 30.0 
 
 31.8 
 34.5 
 34.5 
 41.0 
 30.0 
 
 30.0 
 55.6 
 179.0 
 92.0 
 41.0 
 31.8 
 
 39.0 
 39.0 
 39.0 
 44.0 
 39.0 
 
 45.0 
 39.0 
 23.0 
 51.2 
 23.0 
 
 99.0 
 60.0 
 27.9 
 23.0 
 23.0 
 
 111.0 
 
 250.0 
 
 99.0 
 
 73.3 
 
 72.0 
 
 79.8 
 67.2 
 61.2 
 77.2 
 50.1 
 
 67.2 
 43.0 
 34.5 
 34.5 
 41.0 
 32.7 
 
 35.4 
 30.0 
 24.4 
 23.0 
 22.4 
 
 23.0 
 45.0 
 29.3 
 37.2 
 30.0 
 
 49.0 
 164.0 
 
 50.1 
 
 53.4 
 110.0 
 
 62.4 
 
 27.9 
 25.8 
 21.2 
 23.0 
 23.7 
 
 24.4 
 45.0 
 24.4 
 21.2 
 19.4 
 
 18.2 
 18.2 
 19.4 
 20.6 
 25.1 
 
 27.9 
 36.3 
 38.1 
 79.8 
 79.8 
 
 94.8 
 68.4 
 57.8 
 36.3 
 53.4 
 
 117.0 
 57.8 
 68.4 
 50.1 
 46.0 
 42.0 
 
 24.4 
 
 "*85.'6" 
 125.0 
 
 54^5 
 
 45.0 
 32.7 
 39.0 
 111.0 
 
 51.2 
 
 17 
 
 30.9 
 
 18 
 
 30.0 
 
 19 
 
 85.0 
 
 20 
 
 79.8 
 
 21 
 
 124.0 
 
 22 
 
 172.0 
 
 23 
 
 203.0 
 
 24 
 
 647.0 
 
 25 
 
 239.0 
 
 26 
 
 137 
 
 27 
 
 94.8 
 
 28 
 
 75 9 
 
 29 
 
 60 
 
 30 
 
 55.6 
 
 31 
 
 54.5 
 
 
 
 Monthly discharge of North Fork of Wailua River near Lihue, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 Minimum. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March , 
 
 April.. 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November a 
 
 December 
 
 The period 
 
 104 
 130 
 571 
 606 
 179 
 t 99 
 563 
 164 
 106 
 117 
 125 
 
 43.0 
 20.0 
 33.6 
 46.0 
 30.0 
 23.0 
 23.0 
 22.4 
 18.2 
 21.8 
 24.4 
 30.0 
 
 61.5 
 33.0 
 
 107.0 
 79.8 
 47.3 
 40.4 
 88.4 
 45.2 
 33.3 
 51.6 
 49.1 
 
 166.0 
 
 3,780 
 1,900 
 6,580 
 4,750 
 2,910 
 2,400 
 5,440 
 2,780 
 1,980 
 3,170 
 2,440 
 10,200 
 
 18.2 
 
 6 67.5 
 
 48,300 
 
 a No record Nov. 17-21. Mean for November is mean of 25 days. 
 b Mean for the year is mean of 361 days. 
 
 UHAU IOLE STREAM AT 750-FOOT ELEVATION NEAR LIHUE, KAUAI. 
 
 Location. — About 11 miles northwest of Lihue, 3 miles from boundary of forest 
 
 reserve, and 400 feet below falls. 
 Records available.— From July 28, 1912, to December 31, 1912. 
 Drainage area. — 1.21 square miles. 
 
 Gage. — A vertical staff gage; read once a week; datum unchanged. 
 Channel. — Practically permanent. 
 Discharge measurements. — Made by wading. 
 
 Discharge measurements of TJhau Iole Stream at 750-foot elevation near Lihue, Kauai, in 
 
 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 May 5 
 
 W. V. Hardy 
 
 Feet. 
 
 a 5. 20 
 4.73 
 5.15 
 4.96 
 
 Sec.-ft. 
 3.83 
 
 July 28 
 Oct. 20 
 
 do 
 
 .....do 
 
 5.91 
 17.3 
 
 Do... 
 
 do . 
 
 11.2 
 
 
 
 
 a Gage height of no value, as water level was disturbed in cleaning channel to make good measuring section. 
 
74 
 
 Daily gage 
 
 in feet, of Uhau Iole Stream at 750-foot elevation near Lihue, Kauai, 
 for 1912. 
 
 [S. Takabayasbi, observer.] 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 
 
 4.65 
 
 
 
 5.12 
 
 16 
 
 
 
 
 
 
 2. 
 
 
 
 
 17 
 
 
 
 
 4.68 
 
 
 3 
 
 
 
 
 4.70 
 
 
 18 
 
 19 
 
 4.63 
 
 
 
 
 4 
 
 4.69 
 
 
 
 
 
 
 
 5 
 
 
 
 
 
 20 
 
 
 
 5.18 
 
 
 
 6 
 
 
 
 4.63 
 
 
 
 21 
 
 
 
 
 
 7 
 
 
 
 
 
 22 
 
 
 4.65 
 
 
 
 4.85 
 
 8. 
 
 
 4.70 
 
 
 
 5.36 
 
 23 
 
 
 
 
 
 9. 
 
 
 
 
 24 
 
 
 
 
 4.71 
 
 
 10 
 
 
 
 
 4.71 
 
 
 25 
 
 26 
 
 4.62 
 
 
 
 
 11. 
 
 4.70 
 
 
 
 
 - 
 
 
 
 12. 
 
 
 
 4.70 
 
 
 27 
 
 
 
 4.74 
 
 
 
 13. 
 
 
 
 4.70 
 
 28 
 
 
 
 
 
 14.... 
 
 
 
 
 
 29 
 
 
 4.61 
 
 
 
 4.98 
 
 15 
 
 
 4.63- 
 
 
 
 4.84 
 
 30 
 
 
 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 EAST BRANCH OF NORTH FORK OF WAILTJA RIVER NEAR LIHUE, KAUAI. 
 
 Location. — About 8 miles northwest of Lihue, 600 feet above gaging station on the 
 North Wailua, and 400 feet above the confluence of the north and east branches 
 of North Wailua River. 
 
 Records available. — July 27, 1912, to December 31, 1912. 
 
 Gage. — Inclined staff gage; read once a day, about lp.m.; datum unchanged. 
 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made by wading. 
 
 Discharge measurements of East Branch of North Fork of Wailua River at 300-foot 
 elevation near Lihue, Kauai, in 1912. 
 
 Date. 
 
 Hydrograpber. 
 
 Gage 
 beigbt. 
 
 Dis- 
 cbarge. 
 
 July 31 
 Oct. 21 
 
 W. V. Hardy. 
 do 
 
 Feet. 
 6.35 
 6.70 
 
 Sec.-ft. 
 28.0 
 60.4 
 
 Daily gage height, in feet, of East Branch of North Fork of Wailua River at 300-foot 
 elevation near Lihue, Kauai, for 1912. 
 
 [Mori and Takabayasbi, observers.] 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct.' 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 6.32 
 
 6.40 
 6 50 
 6.45 
 6.40 
 6.40 
 
 6.60 
 6.45 
 6.38 
 6.40 
 6.33 
 
 6.30 
 6.30 
 
 "6."28" 
 6.26 
 
 6 50 
 
 6.80 
 6.80 
 6.32 
 6.30 
 
 6.27 
 
 6.28 
 6.45 
 6.35 
 6.32 
 
 6.90 
 6.45 
 6.37 
 6.35 
 6.32 
 
 6.42 
 6.35 
 6.32 
 
 '6."56" 
 
 6.50 
 6.45 
 6.47 
 6.65 
 6.88 
 
 6.42 
 6.32 
 6.32 
 6.30 
 6.32 
 
 6.70 
 
 "~6.' 15 
 6.13 
 
 6.90 
 6.72 
 6.71 
 6.63 
 6.62 
 
 ""6." 59 
 6.52 
 6.50 
 6.38 
 
 16 
 
 
 6.45 
 6.40 
 6.31 
 6.35 
 6.32 
 
 6.30 
 6.30 
 6.30 
 6.28 
 6.32 
 
 6.40 
 6.60 
 6.40 
 6.40 
 6.50 
 6.45 
 
 6.25 
 6.25 
 6.25 
 6.25 
 6.30 
 
 6.28 
 6.29 
 6.25 
 6.23 
 6.22 
 
 6.20 
 6.20 
 6.21 
 6.23 
 6.25 
 
 6.30 
 6.40 
 6.35 
 6.52 
 6.40 
 
 6.70 
 6.50 
 6.45 
 6.42 
 6.41 
 
 6.48 
 6.42 
 6.46 
 6.48 
 6.49 
 6.48 
 
 6.32 
 6.29 
 6.33 
 6.48 
 6.40 
 
 "6.'68" 
 6.76 
 6.37 
 
 6.40 
 
 2 
 
 
 17 
 
 
 6.40 
 
 3 
 
 
 6.30 
 6.28 
 ©.27 
 
 6.40 
 6.45 
 6.40 
 6.40 
 6.32 
 
 6.30 
 6.30 
 6.30 
 
 18 
 
 
 6.40 
 
 4 
 
 
 19 
 
 
 6.38 
 
 5 
 
 
 20 
 
 
 6.62 
 
 6 
 
 
 21 
 
 
 6.15 
 
 7 
 
 
 22 
 
 
 7.23 
 
 8 
 
 
 23 
 
 
 6.72 
 
 9 
 
 
 24 
 
 
 
 10 
 
 
 25 
 
 
 
 11... 
 
 
 26 
 
 
 6.32 
 6.30 
 
 "6." 65" 
 
 6.64 
 
 12 
 
 
 27 
 
 6.' 35 
 6.35 
 6.35 
 6.44 
 6.34 
 
 6.60 
 
 13.. 
 
 
 28 
 
 6.58 
 
 14 
 
 
 29 
 
 6.30 
 
 15 
 
 
 6.40 
 
 30 
 
 6.45 
 
 
 
 31 
 
 6.45 
 
 
 
 
ISLAND OF KAUAI. 
 
 75 
 
 EEAHUA STREAM AT 750-FOOT ELEVATION NEAR LIHITE, KAUAI. 
 
 Location. — About 12 miles north of Lihue, 4 miles from edge of forest reserve, and at 
 
 confluence with stream from the east. 
 Records available.— July 29, 1912, to December .31, 1912. 
 Gage. — Vertical staff; read once a week. 
 Channel.— Permanent. 
 Discharge measurements. — Made by wading at about 20 feet below confluence of 
 
 streams and about 35 feet below gage. 
 
 Discharge measurements ofKedhua Stream at 750-foot elevation near Lihue, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 May 5 
 July 29 
 Oct. 22 
 
 W. V. Hardy. 
 
 do 
 
 do 
 
 Feet. 
 
 5.20 
 a 5. 19 
 
 5.32 
 
 Sec-feet. 
 10.8 
 12.3 
 13.6 
 
 a New datum established since previous measurement of May 5. 
 
 Daily gage height, in feet, of Keahua Stream at 750-foot elevation near Lihue, Kauai, for 
 
 1912. 
 
 
 
 
 
 [S. Takabayashi, observer.] 
 
 
 
 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 5.29 
 
 
 
 5.52 
 
 16 
 
 
 
 
 
 
 2 
 
 
 
 
 17 
 
 
 
 
 5.11 
 
 
 3 
 
 
 
 
 5.21 
 
 
 18 
 
 19 
 
 5.12 
 
 
 
 
 4 
 
 5.11 
 
 
 
 
 
 
 
 5 
 
 
 
 
 
 20. 
 
 
 
 
 
 
 6 
 
 
 
 5.11 
 
 
 
 21 
 
 
 
 
 
 
 7 
 
 
 
 
 
 22 
 
 
 5.14 
 
 5.32 
 
 
 5.41 
 
 8 
 
 
 5.27 
 
 
 
 5.50 
 
 23 
 
 
 
 9 
 
 
 
 
 24 
 
 
 
 
 5.13 
 
 
 10 
 
 
 
 
 5.20 
 
 
 25 
 
 26 
 
 5.23 
 
 
 
 
 11 
 
 5.12 
 
 
 
 
 
 
 
 12 
 
 
 
 5.18 
 
 
 27 
 
 
 
 5.13 
 
 
 
 13 
 
 
 
 5.13 
 
 28 
 
 
 
 
 
 14... 
 
 
 
 
 
 29... 
 
 
 5.09 
 
 
 
 5.12 
 
 15 
 
 
 5.11 
 
 
 
 5.10 
 
 30 
 
 
 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 KAWI STREAM AT 750-FOOT ELEVATION NEAR LIHUE, KAUAI. 
 
 Location. — About 8 miles north of Lihue, 3 miles from boundary of forest reserve, 
 
 and 600 feet above confluence of stream from the east. 
 Records available. — July 30 to December 31, 1912. 
 Drainage area. — 0.71 square miles. 
 
 Gage. — Vertical staff gage; read once a week; datum unchanged. 
 Channel. — Permanent. 
 Discharge measurements. — Made by wading. 
 
 Discharge measurements of Kawi Stream at 750-foot elevation near Lihue, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Apr. 29 
 July 30 
 Oct. 22 
 Nov. 12 
 
 W.V.Hardy 
 
 do 
 
 do 
 
 Larrison and Hardy. 
 
 Feet. 
 5.00 
 
 a 1.92 
 1.92 
 1.80 
 
 Sec-feet. 
 2.01 
 1.80 
 2.10 
 1.48 
 
 a New datum established since previous measurement. 
 
76 
 
 WATER RESOURCES OF HAW An, 1912. 
 
 Daily gage height, in feet, of Kawi Stream at 750-foot elevation near Lihue, Kauai, for 1912. 
 
 [S. Takabayashi, observer.] 
 
 J Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 . Dec. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.89 
 
 
 
 2.03 
 
 16 
 
 
 
 
 
 
 2 
 
 
 
 
 17 
 
 
 
 
 1.82 
 
 
 3 
 
 
 
 
 1.79 
 
 
 18 
 
 19 
 
 1.88 
 
 
 
 
 4 
 
 1.88 
 
 
 
 
 
 
 
 5 
 
 
 
 
 
 20 
 
 
 
 
 
 
 6 
 
 
 
 1.80 
 
 
 
 21.. 
 
 
 
 
 
 
 7 
 
 
 
 
 
 22 
 
 
 1.92 
 
 1.92 
 
 
 2.02 
 
 8....... 
 
 
 1.88 
 
 
 
 1.99 
 
 23 
 
 
 
 9 ... 
 
 
 
 
 24 
 
 
 
 
 1.83 
 
 
 10 
 
 
 
 
 1.84 
 
 
 25 
 
 26 
 
 1.98 
 
 
 
 
 11 
 
 1.89 
 
 
 
 
 
 
 
 12 
 
 
 
 1.80 
 
 
 27.. 
 
 
 
 1.90 
 
 
 
 13 
 
 
 
 1.90 
 
 28 
 
 
 
 
 
 14 
 
 
 
 
 
 29 
 
 
 1.82 
 
 
 
 i.si 
 
 15 
 
 
 1.72 
 
 
 
 1.81 
 
 30 
 
 
 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 KANAHA DITCH AT INTAKE, NEAR LIHTTE. KAUAI. 
 
 Location. — About 9 miles northwest of Lihue and about 500 feet above the point 
 where the Kauai Electric Co.'s power line crosses the ditch and the North Fork 
 of Wailua River. 
 
 Records available. — August 6, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read once each day, at 8 a.m.; datum unchanged. 
 
 Discharge measurements. — Made in flume 100 feet above gage. 
 
 Discharge measurements of Kanaka ditch at intake, near Lihue, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 11 
 
 W. V. Hardy 
 
 Feet. 
 3.02 
 2.84 
 2.78 
 3.14 
 
 Sec.-ft. 
 33.4 
 
 July 29 
 31 
 
 do 
 
 29.0 
 
 . . .do 
 
 27.7 
 
 Oct. 
 
 do 
 
 32.4 
 
 
 
 
 Daily gage height, in feet, of Kanaha ditch at intake, near Lihue, Kauai, for 1912. 
 
 [Mori, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 j 
 
 2.50 
 2.50 
 
 2.30 
 2.25 
 2.25 
 2.25 
 2.25 
 
 2.20 
 2.20 
 2.20 
 2.60 
 2.50 
 
 2.50 
 2.50 
 2.50 
 2.40 
 2.40 
 
 2.60 
 2.60 
 2.80 
 2.70 
 2.60 
 
 2.60 
 2.75 
 2.70 
 2.80 
 2.80 
 
 3.00 
 3.00 
 3.00 
 2.90 
 2.80 
 
 2.60 
 2.55 
 2.50 
 2.60 
 2.80 
 
 2.70 
 2.90 
 2.90 
 2.90 
 2.80 
 
 2.70 
 2.70 
 2.60 
 2.60 
 2.60 
 
 2.75 
 
 2.70 
 2.80 
 3.10 
 2.90 
 
 2.80 
 2.70 
 2.90 
 2.80 
 2.7b 
 
 2.65 
 2.60 
 2.60 
 2.80 
 2.80 
 
 2.75 
 2.70 
 2.70 
 2.70 
 2.70 
 
 2.80 
 2.80 
 2.80 
 2.80 
 2.75 
 
 2.75 
 2.75 
 2.80 
 2.80 
 2.80 
 
 2.80 
 2.75 
 2.80 
 2.75 
 2.75 
 
 2.80 
 3.00 
 3.10 
 2.80 
 3.10 
 
 3.10 
 3.10 
 3.10 
 3.20 
 3.00 
 
 2.70 
 2.90 
 2.90 
 2.90 
 2.90 
 
 3.50 
 3.00 
 3.10 
 3.10 
 3.10 
 
 3.10 
 3.10 
 3.10 
 3.20 
 •3.00 
 
 3.20 
 3.20 
 3.10 
 3.10 
 3.10 
 
 3.20 
 3.10 
 3.10 
 3.10 
 3.10 
 
 3.10 
 2.90 
 
 "2. 90* 
 3.00 
 
 3.00 
 2.90 
 3.00 
 3.00 
 3.15 
 
 3.05 
 3.05 
 3.10 
 3.05 
 3.05 
 
 3.10 
 3.10 
 3.05 
 3.00 
 3.00 
 
 2.90 
 3.00 
 3.00 
 3.00 
 3.20 
 
 3.20 
 3.10 
 3.10 
 3.20 
 3.15 
 
 3.05 
 2.95 
 2.90 
 2.90 
 3.10 
 
 3.05 
 
 2 
 
 3.2 
 
 3 
 
 3.1 
 
 4 
 
 
 1.6 
 
 5 
 
 
 1.6 
 
 6 
 
 
 1.6 
 
 7 
 
 
 1.5 
 
 8 
 
 
 1.6 
 
 9 
 
 
 1.60 
 
 10 
 
 
 2.40 
 
 11 
 
 
 2.40 
 
 12 
 
 
 2.40 
 
 13 
 
 
 2.40 
 
 14 
 
 
 2.30 
 
 15 
 
 
 2.30 
 
ISLAND OP KAUAI. 77 
 
 Daily gage height, infeet,o/Kanaha ditch at intake, near Lihue, Kauai, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 
 2.40 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.40 
 2.60 
 2.60 
 2.60 
 2.80 
 
 2.80 
 2.80 
 2.60 
 2.60 
 
 2.70 
 2.70 
 2.65 
 2.60 
 2.60 
 
 2.80 
 2.75 
 2.80 
 2.40 
 2.50 
 
 2.50 
 2.50 
 2.40 
 2.40 
 2.60 
 2 SO 
 
 2.70 
 3.00 
 2.40 
 2.30 
 2.30 
 
 2.00 
 2.00 
 2.00 
 2.60 
 2.80 
 
 2.50 
 2.70 
 2.70 
 2.80 
 2.80 
 
 2.80 
 2.80 
 2.80 
 2.75 
 2.75 
 
 2.80 
 2.80 
 2.80 
 2.85 
 2.85 
 
 2.85 
 2.85 
 3.00 
 3.00 
 2.90 
 2.80 
 
 2.80 
 2.80 
 2.70 
 2.70 
 2.70 
 
 2.80 
 2.90 
 2.90 
 2.80 
 2.70 
 
 2.70 
 2.90 
 2.80 
 2.70 
 2.70 
 
 2.80 
 3.10 
 3.50 
 3.00 
 3.00 
 
 3.00 
 2.80 
 2.80 
 3.00 
 2.90 
 
 3.00 
 3.00 
 3.00 
 3.50 
 3.10 
 2.80 
 
 3.10 
 3.50 
 3.00 
 3.00 
 3.00 
 
 3.00 
 3.50 
 3.50 
 3.50 
 3.20 
 
 3.10 
 3.10 
 3.10 
 3.10 
 3.20 
 3.20 
 
 3.05 
 2.90 
 2.80 
 2.80 
 3.00 
 
 3.00 
 3.05 
 3.00 
 2.90 
 2.75 
 
 2.75 
 2.75 
 2.70 
 3.00 
 3.05 
 
 2.90 
 3.15 
 3.10 
 3.15 
 3.15 
 
 3.14 
 3.15 
 3.15 
 3.10 
 3.10 
 
 3.20 
 3.15 
 3.15 
 3.10 
 3.00 
 3.05 
 
 2.85 
 2.83 
 3.05 
 3.10 
 3.15 
 
 ""3*20" 
 
 1.60 
 1.60 
 1.65 
 3.10 
 2.90 
 
 2.30 
 
 17 
 
 
 2.70 
 
 18 
 
 
 2.70 
 
 19 
 
 
 2.90 
 
 20 
 
 
 3.00 
 
 21 
 
 
 2.80 
 
 22 
 
 2.30 
 2.40 
 2.40 
 2.40 
 
 2.30 
 
 2.30 
 
 2.20 
 
 2.90 
 
 23 
 
 2.85 
 
 24 
 
 2.90 
 
 25 
 
 2.80 
 
 26 
 
 2.70 
 
 
 2.70 
 
 28 
 
 2.50 
 
 
 2.40 
 
 30 
 
 2.40 
 
 
 2.40 
 
 
 
 KONOHIKI STREAM BASIN. 
 KONOHIKI STREAM AT MAKAKTJALELE MAUKA WEIR, NEAR KAPAA, KAUAI. 
 
 Location. — About 3 miles west of Kapaa. 
 Records available. — April 1, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once each day; datum unchanged. 
 Discharge measurements. — Made with 3-foot sharp-crested weir. 
 Cooperation. — Station maintained by the Makee Sugar Co. 
 
 Daily discharge, in second-feet, of Konohiki Stream at Makakualele mauka weir, near 
 
 Kapaa, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 2. 
 3. 
 4. 
 5. 
 
 6, 
 7 
 8. 
 9. 
 10, 
 
 11. 
 12. 
 13. 
 14. 
 15. 
 
 16, 
 17. 
 18. 
 19. 
 20 
 
 21. 
 22, 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 1.17 
 1.03 
 1.03 
 1.03 
 1.03 
 
 1.03 
 1.03 
 1.03 
 1.17 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.03 
 1.03 
 1.03 
 
 .83 
 .83 
 .83 
 
 89 
 
 .83 
 .83 
 
 .83 
 .83 
 
 .83 
 .83 
 .83 
 .83 
 .83 
 
 .76 
 3.53 
 2.82 
 1.81 
 1.56 
 
 1.48 
 1.25 
 1.17 
 1.17 
 1.17 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.03 
 1.03 
 1.03 
 1.03 
 1.03 
 
 1.03 
 .96 
 .96 
 .96 
 
 .96 
 1.10 
 
 .96 
 1.03 
 
 1.03 
 1.03 
 
 89 
 
 0.83 
 
 .83 
 .83 
 
 .83 
 
 1.25 
 
 .96 
 
 .83 
 
 2.72 
 
 1.32 
 
 1.17 
 
 1.10 
 
 .96 
 
 .89 
 
 .83 
 
 .83 
 .83 
 .83 
 .83 
 .83 
 
 .83 
 
 .83 
 
 0.83 
 .83 
 .83 
 .83 
 .83 
 
 .83 
 .83 
 .83 
 
 .83 
 
 .83 
 .83 
 .83 
 .83 
 
 .83 
 .83 
 .83 
 .83 
 .83 
 
 .76 
 .76 
 .76 
 
 0.76 
 .76 
 .76 
 .70 
 .70 
 
 .76 
 .76 
 .70 
 .70 
 .70 
 
 .70 
 .70 
 .70 
 .70 
 
 .70 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .58 
 
 0.58 
 .58 
 .58 
 .58 
 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 .58 
 .58 
 .64 
 .83 
 
 .76 
 .70 
 .64 
 .58 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 0.58 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .64 
 
 .58 
 .58 
 .58 
 .52 
 .52 
 
 .52 
 .52 
 .52 
 .52 
 .52 
 
 .52 
 .58 
 .52 
 .52 
 .52 
 
 .52 
 .52 
 .52 
 .52 
 .52 
 
 0.52 
 1.81 
 2.07 
 1.98 
 1.40 
 
 1.17 
 .96 
 .96 
 
 1.17 
 
 .83 
 .83 
 .76 
 .76 
 
 .76 
 .76 
 .70 
 .70 
 .70 
 
 .76 
 .76 
 .76 
 .70 
 .70 
 
 .70 
 .70 
 
 .64 
 .64 
 
 Note.— Discharge computed from Francis's formula: Q=3.33 LH T when L=3 feet. 
 
78 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of Konohiki Stream at Makakualele mauka weir, near Kapaa, Kauai, 
 
 for 1912. 
 
 Month. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 1.17 
 
 .96 
 
 1.72 
 
 3.53 
 
 1.10 
 
 1.25 
 
 2.72 
 
 .89 
 
 .76 
 
 .83 
 
 .64 
 
 2.07 
 
 3.53 
 
 .83 
 .83 
 .76 
 .89 
 .76 
 .83 
 .76 
 .58 
 .58 
 .52 
 .52 
 
 ,52 
 
 1.02 
 .85 
 .97 
 
 1.17 
 .97 
 
 Run-off 
 (total in 
 acre-feet). 
 
 62.7 
 48.9 
 59.6 
 
 51.2 
 58.4 
 51.0 
 40.5 
 36.9 
 32.7 
 56.6 
 
 KONOHIKI STREAM AT MAKAKUALELE MAKAI WEIR, NEAR KAPAA, KAXTAI. 
 
 Location. — About 2\ miles west of Kapaa. 
 Records available. — January 1, 1912, to December 31, 1912. 
 Gage. — Vertical staff; read once each day; datum unchanged. 
 Discharge measurements. — Made with 3-foot sharp-crested weir. 
 Cooperation. — Station maintained by the Makee Sugar Co. 
 
 Daily discharge 
 
 e, m secona- 
 
 of Konohiki Stream at Makakualele makai weir, near 
 Kapaa, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 7.15 
 
 2.62 
 
 4.64 
 
 5.24 
 
 2.53 
 
 0.32 
 
 0.58 
 
 0.58 
 
 0.58 
 
 0.58 
 
 0.58 
 
 9.10 
 
 3.75 
 
 4.64 
 
 5.24 
 
 2.07 
 
 .32 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 7.83 
 
 5.36 
 
 3.02 
 
 3.53 
 
 1.64 
 
 .32 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 9.10 
 
 3.75 
 
 3.02 
 
 3.75 
 
 1.10 
 
 .32 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 8.53 
 
 5.36 
 
 4.89 
 
 4.07 
 
 .89 
 
 .32 
 
 .32 
 
 .58 
 
 .89 
 
 .58 
 
 .32 
 
 6.75 
 
 4.64 
 
 4.64 
 
 3.53 
 
 .89 
 
 .32 
 
 .32 
 
 .58 
 
 .89 
 
 .58 
 
 .58 
 
 6.75 
 
 2.72 
 
 4.64 
 
 3.53 
 
 .58 
 
 .32 
 
 .32 
 
 .58 
 
 .89 
 
 .58 
 
 .58 
 
 6.88 
 
 2.53 
 
 5.24 
 
 3.53 
 
 .58 
 
 .32 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 3.53 
 
 3.22 
 
 5.24 
 
 3.53 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 3.32 
 
 1.98 
 
 5.24 
 
 3.53 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 7.42 
 
 2.25 
 
 6.49 
 
 3.53 
 
 .32 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 8.25 
 
 3.12 
 
 5.24 
 
 3.53 
 
 .32 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 9.99 
 
 3.53 
 
 1.81 
 
 3.53 
 
 .32 
 
 .58 
 
 .32 
 
 .89 
 
 .58 
 
 .58 
 
 .32 
 
 9.99 
 
 2.72 
 
 2.07 
 
 3.53 
 
 .58 
 
 .58 
 
 .32 
 
 .89 
 
 .58 
 
 .58 
 
 .32 
 
 7.83 
 
 3.32 
 
 1.64 
 
 3.53 
 
 .58 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 7.69 
 
 3.53 
 
 2.07 
 
 3.53 
 
 .58 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 6.62 
 
 2.72 
 
 5.24 
 
 7.83 
 
 .58 
 
 .58 
 
 .32 
 
 .32 
 
 .58 
 
 .58 
 
 .32 
 
 4.64 
 
 1.89 
 
 5.24 
 
 7.83 
 
 .58 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 4.07 
 
 3.02 
 
 4.64 
 
 5.24 
 
 .58 
 
 .32 
 
 .32 
 
 .58 
 
 .58 
 
 .70 
 
 .32 
 
 3.64 
 
 2.43 
 
 5.24 
 
 3.53 
 
 .58 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 1.03 
 
 .32 
 
 3. 75 
 
 3.12 
 
 6.10 
 
 3.53 
 
 .58 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 1.03 
 
 .23 
 
 7.15 
 
 3.53 
 
 5.85 
 
 3.53 
 
 .58 
 
 .58* 
 
 .32 
 
 .58 
 
 .58 
 
 1.03 
 
 .19 
 
 7.42 
 
 2.53 
 
 4.07 
 
 3.53 
 
 .32 
 
 .58 
 
 .32 
 
 .89 
 
 .58 
 
 1.03 
 
 .11 
 
 3.02 
 
 3.53 
 
 4.07 
 
 3.53 
 
 .32 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 3.64 
 
 3.53 
 
 4.64 
 
 3.75 
 
 .58 
 
 .58 
 
 .32 
 
 .58, 
 
 .58 
 
 .70 
 
 .58 
 
 4.76 
 
 3.53 
 
 4.30 
 
 3.53 
 
 .32 
 
 .70 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 4.64 
 
 3.64 
 
 5.48 
 
 4.07 
 
 .32 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 3.64 
 
 2.92 
 
 5.24 
 
 3.53 
 
 .58 
 
 .58 
 
 .32 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 4.76 
 
 3.02 
 
 5.24 
 
 3.53 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 3. 53 
 
 
 5.24 
 
 3.53 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .58 
 
 .32 
 
 .58 
 
 3.64 
 
 
 5.24 
 
 
 .58 
 
 
 .58 
 
 . .58 
 
 
 .89 
 
 
 Dec. 
 
 1.25 
 1.25 
 
 7.83 
 8.53 
 3.02 
 
 1.25 
 1.25 
 1.25 
 1.25 
 
 1.25 
 1.25 
 1.25 
 1.25 
 
 .58 
 .58 
 .58 
 .32 
 
 .32 
 .32 
 
 .32 
 .58 
 .58 
 
 .58 
 .32 
 .32 
 .32 
 .32 
 .32 
 
 Note,— Discharge computed from Francis's formula: Q=3.33 LH 7 when L=3 feet, 
 
ISLAND OF KAUAI. 
 
 79 
 
 Monthly discharge of Konohihi Stream at Makakualele, maJcai weir, near Kapaa, Kauai, 
 
 for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 5.36 
 6.49 
 7.83 
 2.53 
 .70 
 .58 
 
 1.03 
 
 .58 
 
 8.53 
 
 3.02 
 
 1.89 
 
 1.64 
 
 3.53 
 
 .32 
 
 .32 
 
 .32 
 
 .32 
 
 .58 
 
 .32 
 
 .11 
 
 .32 
 
 6.10 
 3.24 
 
 375 
 
 186 
 278 
 240 
 
 42. 
 
 31. 
 
 22.8 
 36.9 
 36.3 
 40.0 
 22.6 
 82.4 
 
 9.99 
 
 11 
 
 1.92 
 
 1,390 
 
 Note. — Maximum and minimum discharge are mean for the day. 
 
 KAEHULUA STREAM BASIN. 
 NORTH FORE OF KAEHTJLTJA STREAM AT KAINAHOLA WEIR, NEAR KAPAA, KAUAI. 
 
 Location. — About 2 miles northwest of Kapaa. 
 
 Records available. — April 1, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read once each day; datum unchanged. 
 
 Discharge measurements. — Made with a 3-foot sharp-crested weir. 
 
 Cooperation. — Station maintained by the Makee Sugar Co. 
 
 Daily discharge, in second-feet, of North Fork of Kaehulua Stream at Kainahola weir, near 
 
 Kapaa, Kauai, for 1912. 
 
 Day. 
 
 1.. 
 
 2.. 
 3.. 
 4.. 
 5- 
 
 6.. 
 
 7.. 
 8. 
 9. 
 10. 
 
 11. 
 12. 
 13. 
 14. 
 15. 
 
 16. 
 17. 
 18. 
 19. 
 20. 
 
 21. 
 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec 
 
 .83 
 .83 
 .83 
 .83 
 
 .83 
 
 .83 
 .83 
 .83 
 .83 
 
 v 76 
 f76 
 .76 
 .76 
 .76 
 
 .76 
 .76 
 .76 
 .76 
 .70 
 
 .70 
 .70 
 .70 
 .70 
 .70 
 
 .70 
 .70 
 .70 
 .70 
 .70 
 .70 
 
 0.70 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 
 0.64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .70 
 .83 
 
 .96 
 
 .83 
 
 0.76 
 .76 
 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 
 3.02 
 
 1.72 
 
 .83 
 
 .76 
 
 .76 
 .76 
 .70 
 .70 
 .70 
 
 .70 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 
 0.70 
 .64 
 .64 
 .70 
 .70 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .58 
 .58 
 .64 
 .64 
 .64 
 
 0.64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 
 2.62 
 .83 
 .76 
 
 1.72 
 .83 
 
 .70 
 .70 
 .70 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 0.64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 
 .64 
 
 1.17 
 
 1.17 
 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 0.58 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 -.58 
 .58 
 .58 
 .58 
 
 .52 
 .52 
 .52 
 .52 
 .52 
 
 .52 
 .52 
 .52 
 .52 
 .52 
 
 .52 
 .52 
 .52 
 .52 
 .52 
 
 0.52 
 .52 
 .52 
 .52 
 .52 
 
 .52 
 .52 
 .52 
 .52 
 .52 
 
 .52 
 .52 
 .52 
 .52 
 .52 
 
 .52 
 .52 
 .52 
 .52 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 0.58 
 .58 
 .58 
 .58 
 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 .58 
 .52 
 .52 
 .52 
 
 .52 
 .52 
 .52 
 .52 
 
 .47 
 
 .47 
 .52 
 .47 
 .47 
 .47 
 
 0.47 
 
 1.10 
 
 2.34 
 
 .96 
 
 .83 
 
 .70 
 .70 
 .70 
 .64 
 .70 
 
 .70 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .64 
 
 .70 
 .83 
 .70 
 .64 
 .64 
 
 .64 
 
 .64 
 .64 
 
 Note.— Discharge computed from Francis's formula: Q=3.33 LH T when L=3 feet. 
 
80 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of North Fork of Kaehulua Stream at Kainahola weir, near Kapaa, 
 
 Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November- % .. 
 December 
 
 The year 
 
 0.83 
 .70 
 .96 
 
 3.02 
 .76 
 .70 
 
 2.62 
 
 1.17 
 .58 
 .58 
 .58 
 
 2.34 
 
 3.02 
 
 0.70 
 .64 
 .64 
 .64 
 .64 
 .68 
 .64 
 .58 
 .52 
 .52 
 .47 
 .47 
 
 .47 
 
 0.76 
 .64 
 .75 
 .79 
 .65 
 .64 
 .76 
 .67 
 .55 
 .54 
 .55 
 .74 
 
 .67 
 
 46.7 
 36.8 
 46.1 
 47.0 
 40.0 
 38.1 
 46.7 
 41.2 
 32.7 
 33.2 
 32.7 
 45.5 
 
 487 
 
 KAEHULUA STREAM AT KUHINOA WEIR, NEAR KAPAA, KAUAI. 
 
 Location. — About 1^ miles northwest of Kapaa. 
 Records available. — May 1, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once each day; datum unchanged. 
 Discharge measurements. — Made with 6.5-foot sharp-crested weir. 
 Cooperation. — Station is maintained by Makee Sugar Co. 
 
 Daily discharge, in second-feet, of Kaehulua Stream at Kuhinoa Weir, near Kapaa, Kauai, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.52 
 2.08 
 1.65 
 2.23 
 1.26 
 
 1.26 
 1.39 
 1.65 
 1.26 
 1.39 
 
 2.23 
 1.65 
 1.39 
 1.13 
 1.79 
 
 1.39 
 1.52 
 1.26 
 1.13 
 1.79 
 
 1.52 
 1.65 
 2.39 
 3.21 
 2.55 
 
 1.52 
 1.65 
 1.52 
 2.23 
 1.93 
 1.93 
 
 1.26 
 1.13 
 1.39 
 1.79 
 1.26 
 
 2.39 
 2.87 
 1.01 
 1.52 
 1.39 
 
 1.52 
 2.23 
 3.04 
 1.39 
 m 1.39 
 
 2.23 
 1.39 
 1.65 
 1.26 
 1.01 
 
 1.13 
 1.39 
 2.23 
 1.52 
 1.79 
 
 1.39 
 
 1.52 
 1.39 
 1.39 
 
 1.65 
 1.39 
 1.26 
 1.26 
 1.26 
 
 1.52 
 
 6.98 
 2.55 
 2.71 
 14.10 
 
 17.00 
 11. 30 
 22.30 
 20.70 
 9.32 
 
 7.65 
 2.71 
 2.71 
 2.71 
 2.71 
 
 2.71 
 3.56 
 1.93 
 1.93 
 1.93 
 
 1.93 
 1.93 
 1.93 
 1.93 
 1.26 
 10.60 
 
 10.60 
 4.48 
 2.71 
 2.71 
 2.71 
 
 1.93 
 
 1.93 
 1.93 
 6.53 
 2.71 
 
 2.71 
 2.71 
 2.71 
 2.71 
 
 2.71 
 
 2.71 
 
 35.90 
 
 25.70 
 
 5.90 
 
 2.71 
 
 2.71 
 2.71 
 2.71 
 2.71 
 2.71 
 
 .68 
 .68 
 .68 
 .68 
 
 .68 
 
 0.68 
 .68 
 .68 
 .90 
 
 .68 
 
 .68 
 
 .90 
 
 1.26 
 
 1.26 
 
 1.26 
 
 .68 
 1.26 
 1.26 
 1.93 
 1.93 
 
 2.23 
 1.93 
 1.93 
 1.93 
 1.93 
 
 1.93 
 
 1.26 
 1.93 
 1.26 
 1.26 
 
 1.93 
 1.93 
 .90 
 11.30 
 1.93 
 1.93 
 
 0.68 
 1.26 
 1.26 
 1.26 
 .68 
 
 1.26 
 1.26 
 1.26 
 1.26 
 1.26 
 
 1.26 
 1.26 
 1.26 
 1.93 
 1.26 
 
 .68 
 
 .68 
 
 1.26 
 
 1.26 
 
 1.26 
 
 1.26 
 1.93 
 2.71 
 2.71 
 2.71 
 
 3.04 
 2.71 
 2.71 
 2.71 
 1.93 
 
 3.56 
 1.93 
 2.71 
 2.71 
 2.71 
 
 3.56 
 2.71 
 2.71 
 3.56 
 3.56 
 
 2.71 
 1.93 
 2.71 
 2.71 
 1.93 
 
 2.23 
 1.93 
 1.93 
 1.26 
 1.93 
 
 1.26 
 1.26 
 2.23 
 2.71 
 1.26 
 
 1.26 
 2.23 
 2.23 
 1.93 
 1.93 
 1.26 
 
 0.68 
 1.26 
 .68 
 1.93 
 1.93 
 
 1.93 
 
 1.26 
 1.93 
 1.26 
 1.93 
 
 1.93 
 1.26 
 2.71 
 2.71 
 1.93 
 
 1.26 
 1.26 
 1.93 
 1.93 
 1.93 
 
 1.93 
 1.26 
 2.71 
 1.93 
 1.93 
 
 1.93 
 1.93 
 1.93 
 2.23 
 1.93 
 1.93 
 
 2.71 
 1.93 
 1.93 
 2.23 
 1.93 
 
 2.23 
 1.26 
 1.93 
 1.93 
 1.93 
 
 1.93 
 2.71 
 1.93 
 1.93 
 1.93 
 
 1.93 
 1.93 
 1.93 
 1.93 
 1.26 
 
 1.26 
 1.26 
 1.26 
 1.26 
 1.26 
 
 1.26 
 1.26 
 2.71 
 1.26 
 1.26 
 
 0.24 
 .24 
 .17 
 .17 
 .24 
 
 .24 
 .24 
 .24 
 .24 
 .24 
 
 .49 
 .32 
 .68 
 .68 
 
 .68 
 
 .68 
 
 .68 
 
 1.26 
 
 1.26 
 
 1.52 
 
 1.52 
 1.52 
 1.52 
 .68 
 1.26 
 
 1.26 
 1.26 
 1.26 
 1.26 
 .58 
 .68 
 
 0.24 
 .24 
 .24 
 .24 
 
 .24 
 
 .24 
 .24 
 .17 
 1.26 
 .24 
 
 .24 
 .24 
 .68 
 .68 
 .90 
 
 .68 
 .24 
 .24 
 
 .17 
 .68 
 
 .68 
 .68 
 .68 
 .24 
 .24 
 
 .06 
 .06 
 .17 
 .06 
 .06 
 
 0.68 
 
 2 
 
 .68 
 
 3 
 
 8.83 
 
 4 
 
 18.50 
 
 5 
 
 .17 
 
 6 
 
 .06 
 
 7 
 
 .68 
 
 8 
 
 .06 
 
 9 
 
 .06 
 
 10 
 
 .40 
 
 11 
 
 .40 
 
 12 
 
 .24 
 
 13 
 
 .68 
 
 14 
 
 .24 
 
 15 
 
 .17 
 
 16 
 
 .17 
 
 17 
 
 .32 
 
 18 
 
 .24 
 
 19 
 
 .24 
 
 20 
 
 .17 
 
 21 
 
 .68 
 
 22 
 
 .68 
 
 23 
 
 .68 
 
 24 
 
 .68- 
 
 25 
 
 .06 
 
 26 
 
 .06 
 
 27 
 
 .06 
 
 28 
 
 .17 
 
 29 
 
 .24 
 
 30 
 
 .24 
 
 31 
 
 .17 
 
 
 
 Note.— Discharge computed from Francis's formula: Q=3.33 LH* when L=6.5 feet. 
 
ISLAND OF KAUAI. 81 
 
 Monthly discharge ofKaehulua Stream at Kukinoa weir, near Kapaa, Kauai, for 1912 . 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 January 
 
 February . 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 3.21 
 3.04 
 22.30 
 35.90 
 11.30 
 3.04 
 3.56 
 2.71 
 2.71 
 1.52 
 1.26 
 18.50 
 
 1.13 
 
 1.01 
 1.26 
 
 1.26 
 .68 
 
 1.26 
 .17 
 .06 
 .06 
 
 1.71 
 1.62 
 5.34 
 4.72 
 1.73 
 1.60 
 2.27 
 1.78 
 1.78 
 .75 
 .37 
 1.18 
 
 105.0 
 
 93.2 
 
 328.0 
 
 281.0 
 
 106.0 
 
 95.2 
 
 140.0 
 
 109.0 
 
 106.0 
 
 46.1 
 
 22.0 
 
 72.6 
 
 35.90 
 
 .06 
 
 2.07 
 
 1,500 
 
 Note. — Maximum and minimum discharge are mean for the day. 
 SOUTH FORK OF KAEHT7LUA STREAM AT WAINAMUAMU WEIR, NEAR KAPAA, KATTAL 
 
 Location. — About 2\ miles northwest of Kapaa. 
 Records available. — April 1, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once each day; datum unchanged. 
 Discharge measurements. — Made with a 3-foot sharp-crested weir. 
 Cooperation. — Station maintained by the Makee Sugar Co. 
 
 Daily discharge, in second-feet, of South Fork of Kaehulua Stream at Wainamuamu weir, 
 near Kapaa, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 0.58 
 
 0.42 
 
 0.42 
 
 0.52 
 
 0.70 
 
 0.52 
 
 0.47 
 
 0.42 
 
 0.42 
 
 0.42 
 
 0.42 
 
 .52 
 
 .42 
 
 .36 
 
 .52 
 
 .70 
 
 .52 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .58 
 
 .42 
 
 .42 
 
 .52 
 
 .70 
 
 .52 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .42 
 
 .36 
 
 .52 
 
 .64 
 
 .52 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .42 
 
 .36 
 
 .47 
 
 .64 
 
 .52 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .42 
 
 .42 
 
 .47 
 
 .64 
 
 .47 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .42 
 
 .36 
 
 .64 
 
 .58 
 
 .47 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .36 
 
 .58 
 
 .58 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .58 
 
 .58 
 
 .58 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .58 
 
 .36 
 
 .58 
 
 .58 
 
 .52 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .58 
 
 .58 
 
 .47 
 
 .47 
 
 1.25 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .47 
 
 .58 
 
 .52 
 
 .47 
 
 .70 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .36 
 
 .58 
 
 .52 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .36 
 
 .58 
 
 .52 
 
 .47 
 
 .58 
 
 .52 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .36 
 
 .58 
 
 .52 
 
 .47 
 
 .70 
 
 .52 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .36 
 
 .58 
 
 .47 
 
 .47 
 
 .52 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .36 
 
 3.53 
 
 .47 
 
 .47 
 
 .52 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .52 
 
 .36 
 
 .36 
 
 3.53 
 
 .47 
 
 .47 
 
 .52 
 
 .42 
 
 ' .42 
 
 .42 
 
 .42 
 
 .47 
 
 .36 
 
 .36 
 
 3.22 
 
 .47 
 
 .47 
 
 .52 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .47 
 
 .36 
 
 .36 
 
 2.92 
 
 .47 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .64 
 
 .42 
 
 .47 
 
 .36 
 
 .36 
 
 2.72 
 
 .47 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .64 
 
 .42 
 
 .47 
 
 .36 
 
 .36 
 
 5.00 
 
 .47 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .64 
 
 .42 
 
 .47 
 
 .42 
 
 .36 
 
 5.00 
 
 .47 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .47 
 
 .42 
 
 .47 
 
 .42 
 
 .36 
 
 5.00 
 
 .52 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .47 
 
 .36 
 
 .36 
 
 5.00 
 
 .47 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .47 
 
 .36 
 
 .36 
 
 5.00 
 
 .47 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .47 
 
 .36 
 
 .42 
 
 5.00 
 
 .47 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .47 
 
 .36 
 
 .42 
 
 4.64 
 
 .52 
 
 .64 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .47 
 
 .36 
 
 .83 
 
 3.02 
 
 .70 
 
 .52 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .36 
 
 .42 
 
 
 .76 
 
 .76 
 
 .64 
 
 .47 
 
 .42 
 
 .42 
 
 .42 
 
 .42 
 
 .36 
 
 .42 
 
 
 .76 
 
 
 .47 
 
 
 .42 
 
 .42 
 
 
 .42 
 
 
 Dec. 
 
 1. 
 
 2. 
 3. 
 4. 
 5. 
 
 6. 
 
 7. 
 8. 
 9. 
 10. 
 
 11. 
 12. 
 13. 
 14, 
 15. 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 0.36 
 .47 
 .52 
 
 1.40 
 .64 
 
 1.10 
 1.10 
 1.10 
 
 .58 
 .58 
 
 .52 
 
 .47 
 .47 
 
 .47 
 .47 
 .47 
 .47 
 .47 
 
 .52 
 .52 
 .52 
 .52 
 .47 
 
 .47 
 .47 
 .47 
 .47 
 .47 
 .47 
 
 Note.— Discharge computed from Francis's formula: Q==3. 
 14694°— wsp 336—14 6 
 
 LH* when L=3 feet. 
 
82 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of South Fork of Kaehulua Stream at Wainamuamu weir, near Kapaa, 
 
 Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 0.58 
 .42 
 .83 
 
 5.00 
 .70 
 .64 
 
 1.25 
 .52 
 .42 
 .64 
 .42 
 
 1.40 
 
 5.00 
 
 0.42 
 .36 
 .36 
 .47 
 .47 
 .47 
 .42 
 .42 
 .42 
 .42 
 .36 
 .36 
 
 .36 
 
 0.50 
 .38 
 .44 
 
 2.11 
 .54 
 .49 
 .51 
 .43 
 .42 
 .44 
 .42 
 .58 
 
 SO. 7 
 21.9 
 27.1 
 126.0 
 33.2 
 29.2 
 31.4 
 26.4 
 25.0 
 27.1 
 25.0 
 35.7 
 
 439 
 
 EAPAA RIVER BASIN. 
 EAPAA RIVER AT KAPAHI, NEAR EAPAA, KAUAI. 
 
 Location. — About one-half mile above the intake of the Kapaa ditch, 5 miles north- 
 west of Kapaa, and 4 miles west of Kealia. , 
 
 Records available.— July 23, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff gage spiked to left bank of stream; read twice daily, about 7 
 a. m. and 2 p.m.; datum unchanged. 
 
 Channel. — Fairly permanent. 
 
 Discharge measurements. — Made from a wire suspension bridge. 
 
 Accuracy. — Records good. 
 
 Cooperation. — Station maintained in cooperation with the Makee Sugar Co. 
 
 The following discharge measurement was made by W. V. Hardy: 
 February 16, 1912: Gage height, 1.42 feet; discharge, 11.8 second-feet. 
 
 Daily gage height, in feet, of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912. 
 
 [S. Okimoto, observer.] 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 1 
 
 2 
 3 
 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 1.61 
 1.62 
 1.63 
 1.58 
 1.76 
 
 1.60 
 1.61 
 1.82 
 1.88 
 1.78 
 
 1.59 
 1.55 
 1.79 
 2.09 
 1.66 
 
 1.60 
 1.55 
 1.53 
 1.50 
 1.50 
 
 1.46 
 1.46 
 1.46 
 1.45 
 1.44 
 
 1.44 
 1.44 
 1.44 
 1.48 
 1.45 
 
 1.45 
 1.44 
 1.44 
 1.44 
 1.44 
 
 1.44 
 1.44 
 1.44 
 1.43 
 1.43 
 
 1.58 
 1.70 
 1.56 
 2.58 
 2.80 
 
 2.62 
 2.11 
 2.92 
 2.00 
 1 85 
 
 1.68 
 1.55 
 1.68 
 1.66 
 1.79 
 
 1.63 
 1.52 
 1.56 
 1.74 
 1.80 
 
 1.86 
 2.45 
 1.86 
 2.14 
 1.74 
 
 1.70 
 1.68 
 1.70 
 1.85 
 1.64 
 
 1.65 
 6.22 
 2.38 
 1.76 
 1.86 
 
 1.48 
 1.46 
 1.48 
 1.62 
 1.52 
 
 1.51 
 1.48 
 1.58 
 1.48 
 1.46 
 
 1.45 
 1.46 
 1.50 
 1.95 
 1.85 
 
 1.54 
 1.56 
 1.48 
 1.45 
 1.45 
 
 1.50 
 1.48 
 1.47 
 1.84 
 1.56 
 
 1.48 
 1.46 
 1.62 
 1.58 
 1.50 
 
 1.46 
 1.45 
 1.70 
 1.50 
 1.50 
 
 1.54 
 1.48 
 1.50 
 1.59 
 1.49 
 
 1.44 
 1.44 
 1.43 
 1.43 
 1.48 
 
 1.53 
 1.81 
 1.53 
 
 1.54 
 2.82 
 
 2.65 
 1.79 
 1.86 
 3.92 
 2.21 
 
 1.85 
 2.24 
 1.74 
 1.54 
 -1.56 
 
 1.46 
 1.45 
 1.44 
 
 48 
 
 1.72 
 1.65 
 1.60 
 1.74 
 1.54 
 
 1.57 
 1.49 
 1.56 
 2.56 
 1.78 
 
 1.60 
 1.66 
 1.53 
 1.50 
 1.48 
 
 1.58 
 1.63 
 1.54 
 1.54 
 1.50 
 
 2.05 
 1.57 
 1.52 
 1.49 
 1.48 
 
 1.46 
 1.45 
 1.45 
 1.42 
 1.40 
 
 1.48 
 1.58 
 1.44 
 1.51 
 1.48 
 
 1.72 
 1.47 
 1.82 
 1.48 
 1.50 
 
 1.50 
 
 1.56 
 1.52 
 1.59 
 1.86 
 2.06 
 
 76 
 
 1.50 
 1.48 
 1.77 
 1.73 
 1.52 
 
 1.52 
 1.47 
 1.44 
 1.44 
 1.64 
 
 1.50 
 1.44 
 1.57 
 1.52 
 1.56 
 
 1.86 
 2.52 
 3.30 
 3.75 
 1.75 
 
 82 
 
 1.58 
 1.52 
 1.50 
 1.50 
 1.48 
 
 1.62 
 1.49 
 1.48 
 1.56 
 1.62, 
 
ISLAND OF KAUAI. 
 
 83 
 
 Daily gage height, in feet, of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912 — 
 
 Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 1.49 
 
 1.48 
 1.48 
 1.48 
 1.48 
 
 1.47 
 1.47 
 1.49 
 1.48 
 1.47 
 1.46 
 
 1.44 
 1.74 
 2.00 
 1.66 
 1.58 
 
 1.58 
 1.58 
 1.51 
 1.49 
 
 1.66 
 
 1.68 
 1.64 
 1.66 
 2.80 
 
 1.84 
 1.64 
 1.70 
 1.66 
 1.60 
 1.72 
 
 1.74 
 1.68 
 1.61 
 1.56 
 1.58 
 
 1.66 
 1.56 
 1.55 
 1.51 
 1.48 
 
 1.46 
 1.58 
 1.70 
 1.82 
 1.56 
 
 1.50 
 1.98 
 2.90 
 2.24 
 1.63 
 1.52 
 
 1.55 
 1.48 
 1.45 
 1.45 
 1.45 
 
 1.44 
 1.57 
 1.52 
 1.48 
 1.44 
 
 1.57 
 1.56 
 1.59 
 2.16 
 1.56 
 
 1.74 
 1.54 
 1.53 
 1.54 
 1.52 
 1.48 
 
 1.51 
 1.60 
 1.52 
 1.47 
 1.48 
 
 1.59 
 1.94 
 1.57 
 1.52 
 
 1.88 
 1.66 
 
 1.50 
 
 1.48 
 1.45 
 1.43 
 1.42 
 
 1.41 
 1.41 
 1.44 
 1.54 
 1.57 
 
 1.91 
 1.60 
 1.62 
 1.55 
 1.57 
 
 2.18 
 1.66 
 1.56 
 1.54 
 1.66 
 1.50 
 
 1.79 
 2.20 
 1.80 
 1.53 
 1.45 
 
 1.48 
 1.45 
 1.44 
 1.90 
 1.70 
 
 2.32 
 
 22 
 
 1.78 
 
 23 
 
 1.68 
 
 24 
 
 2.38 
 
 25 
 
 1.82 
 
 26 
 
 1.82 
 
 27 
 
 1.58 
 
 28 
 
 1.54 
 
 29 
 
 1.50 
 
 30 
 
 1.48 
 
 31 
 
 1.49 
 
 
 
 Daily discharge, in second-feet, of Kapaa River at Kapahi, 
 
 near Kapaa, 
 
 Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 j 
 
 18.4 
 18.8 
 19.2 
 17.2 
 25.0 
 
 18.0 
 
 18.4 
 28.0 
 31.0 
 26.0 
 
 17.6 
 16.0 
 26.5 
 44.3 
 20.4 
 
 18.0 
 16.0 
 15.2 
 14.0 
 14.0 
 
 13.7 
 13.4 
 13.4 
 13.4 
 13.4 
 
 13.1 
 13.1 
 13.7 
 13.4 
 13.1 
 12.8 
 
 12.8 
 12.8 
 12.8 
 12.5 
 12.2 
 
 12.2 
 12.2 
 12.2 
 13.4 
 12.5 
 
 12.5 
 12.2 
 12.2 
 12.2 
 12.2 
 
 12.2 
 12.2 
 12.2 
 11.9 
 11.9 
 
 12.2 
 24.0 
 38.0 
 20.4 
 17.2 
 
 17.2 
 17.2 
 14.4 
 13.7 
 
 42.2 
 17.2 
 46.4 
 20.4 
 17.2 
 
 17.2 
 22.0 
 16.4 
 86.0 
 109.0 
 
 90.0 
 45.7 
 123.0 
 38.0 
 29.5 
 
 21.2 
 
 16.0 
 21.2 
 20.4 
 26.5 
 
 20.4 
 21.2 
 1».6 
 26.4 
 109.0 
 
 29.0 
 19.6 
 22.0 
 20.4 
 18.0 
 23.0 
 
 19.2 
 14.8 
 16.4 
 24.0 
 27.0 
 
 30.0 
 73.5 
 30.0 
 47.8 
 24.0 
 
 22.0 
 21.2 
 22.0 
 29.5 
 19.6 
 
 20.0 
 619.0 
 67.2 
 25.0 
 30.0 
 
 24.0 
 21.2 
 18.4 
 16.4 
 17.2 
 
 20.4 
 16.4 
 16.0 
 14.4 
 13.4 
 
 13.4 
 
 12.8 
 13.4 
 18.8 
 14.8 
 
 14.4 
 
 13.4 
 17.2 
 13.4 
 12.8 
 
 12.5 
 
 12.8 
 14.0 
 35.0 
 29.5 
 
 15.6 
 16.4 
 13.4 
 12.5 
 12.5 
 
 12.8 
 17.2 
 22.0 
 28.0 
 16.4 
 
 14.0 
 
 36.8 
 121.0 
 55.2 
 19.2 
 14.8 
 
 14.0 
 13.4 
 13.1 
 29.0 
 16.4 
 
 13.4 
 
 12.8 
 18.8 
 17.2 
 14.0 
 
 12.8 
 12.5 
 22.0 
 14.0 
 14.0 
 
 15.6 
 13.4 
 14.0 
 17.6 
 13.7 
 
 16.0 
 13.4 
 12.5 
 12.5 
 12.5 
 
 12.2 
 
 16.8 
 14.8 
 13.4 
 12.2 
 
 12.2 
 12.2 
 11.9 
 11.9 
 13.4 
 
 15.2 
 27.5 
 15.2 
 15.6 
 111.0 
 
 93.0 
 26.5 
 30.0 
 261.0 
 52.8 
 
 29.5 
 55.2 
 24.0 
 15.6 
 16.4 
 
 16.8 
 16.4 
 17.6 
 49.2 
 16.4 
 
 24.0 
 15.6 
 15.2 
 15.6 
 14.8 
 13.4 
 
 12.8 
 12.5 
 12.2 
 13.4 
 31.5 
 
 23.0 
 20.0 
 18.0 
 24.0 
 15.6 
 
 16.8 
 13.7 
 16.4 
 84.0 
 26.0 
 
 18.0 
 20.4 
 15.2 
 14.0 
 13.4 
 
 14.4 
 18.0 
 14.8 
 13.1 
 13.4 
 
 17.6 
 34.4 
 16.8 
 14.8 
 31.0 
 20.4 
 
 17.2 
 19.2 
 15.6 
 15.6 
 14.0 
 
 41.5 
 16.8 
 14.8 
 13.7 
 13.4 
 
 12.8 
 12.5 
 12.5 
 11.6 
 11.0 
 
 13.4 
 17.2 
 12.2 
 14.4 
 13.4 
 
 14.0 
 13.4 
 12.5 
 11.9 
 11.6 
 
 11.3 
 11.3 
 12.2 
 15.6 
 16.8 
 
 23.0 
 13.1 
 28.0 
 13.4 
 14.0 
 
 14.0 
 16.8 
 26.0 
 17.2 
 16.4 
 
 24.5 
 16.4 
 16.8 
 17.2 
 14.0 
 
 16.4 
 14.8 
 17.6 
 30.0 
 42.2 
 
 32.6 
 18.0 
 18.8 
 16.0 
 16.8 
 
 50.6 
 20.4 
 16.4 
 15.6 
 20.4 
 14.0 
 
 13.7 
 13.1 
 12.8 
 12.8 
 25.0 
 
 14.0 
 
 13.4 
 25.5 
 23.5 
 14.8 
 
 14.8 
 13.1 
 12.2 
 12.2 
 19.6 
 
 14.0 
 12.2 
 16.8 
 14.8 
 16.4 
 
 26.5 
 52.0 
 27.0 
 15.2 
 12.5 
 
 13.4 
 12.5 
 12.2 
 32.0 
 22.0 
 
 30.0 
 
 2 
 
 80.0 
 
 
 171.0 
 
 4 
 
 236.0 
 
 5 
 
 24.5 
 
 6 
 
 21.6 
 
 7 
 
 20.4 
 
 8 
 
 28.0 
 
 9 
 
 35.0 
 
 10 
 
 21.6 
 
 11 
 
 17.2 
 
 12...., 
 
 14.8 
 
 13 
 
 14.0 
 
 14 
 
 14.0 
 
 15 
 
 13.4 
 
 16 
 
 14.8 
 
 17 
 
 13.7 
 
 18 
 
 13.4 
 
 19 
 
 16.4 
 
 20..... 
 
 18.8 
 
 21. 
 
 61.8 
 
 22 
 
 26.0 
 
 23 
 
 21.2 
 
 24 
 
 67.2 
 
 25 
 
 28.0 
 
 26 
 
 28.0 
 
 27 
 
 17.2 
 
 28 
 
 15.6 
 
 29 
 
 14.0 
 
 30.. 
 
 13.4 
 
 31 
 
 13.7 
 
 
 
 Monthly discharge of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October. ; 
 
 November 
 
 December 
 
 The year 
 
 44. 
 
 123, 
 
 619, 
 
 121 
 29. 
 
 261, 
 84. 
 41.5 
 50.6 
 52.0 
 
 236.0 
 
 619.0 
 
 12.8 
 11.9 
 16.0 
 13.4 
 12.5 
 12.2 
 11.9 
 12.2 
 11.0 
 13.1 
 12.2 
 13.4 
 
 11.0 
 
 18.3 
 14.5 
 37.0 
 45.3 
 21.8 
 14.9 
 34.4 
 20.3 
 14.8 
 20.4 
 18.0 
 36.3 
 
 24.7 
 
 1,130 
 
 834 
 
 2,280 
 
 2,700 
 
 1,340 
 
 887 
 
 2,120 
 
 1,250 
 
 881 
 
 1,250 
 
 1,070 
 
 2,230 
 
 18,000 
 
84 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 AKTTLIKULI SPRING AT WEIR NEAR KAPAA, ELMJAI. 
 
 Location. — About 5 miles west of Kealia. 
 
 Records available. — April 1, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read once each day; datum unchanged. 
 
 Discharge measurements. — Made with a 3-foot sharp-crested weir. 
 
 Cooperation. — Station maintained by the Makee Sugar Co. 
 
 Daily discharge, in second-feet, of Akulikuli Spring at weir near Kapaa, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 2.07 
 
 1.81 
 
 1.89 
 
 1.98 
 
 1.98 
 
 1.17 
 
 1.89 
 
 1.32 
 
 1.17 
 
 0.96 
 
 1.03 
 
 2.07 
 
 1.72 
 
 1.89 
 
 1.98 
 
 1.98 
 
 1.10 
 
 1.89 
 
 1.32 
 
 1.10 
 
 .96 
 
 1.03 
 
 1.98 
 
 1.72 
 
 1.98 
 
 1.98 
 
 1.98 
 
 1.10 
 
 1.89 
 
 1.32 
 
 1.10 
 
 .96 
 
 1.03 
 
 1.89 
 
 1.72 
 
 1.98 
 
 1.98 
 
 2.16 
 
 1.10 
 
 1.89 
 
 1.32 
 
 1.03 
 
 .96 
 
 1.03 
 
 1.89 
 
 1.98 
 
 1.98 
 
 1.98 
 
 2.16 
 
 1.10 
 
 1.89 
 
 1.32 
 
 1.10 
 
 .96 
 
 1.03 
 
 1.89 
 
 1.98 
 
 1.98 
 
 1.98 
 
 1.98 
 
 1.03 
 
 1.89 
 
 1.25 
 
 1.10 
 
 .96 
 
 1.03 
 
 1.89 
 
 1.89 
 
 1.81 
 
 2.16 
 
 1.98 
 
 1.03 
 
 1.89 
 
 1.25 
 
 1.10 
 
 .96 
 
 1.03 
 
 1.89 
 
 1.89 
 
 1.81 
 
 2.07 
 
 1.98 
 
 1.03 
 
 1.89 
 
 1.25 
 
 1.03 
 
 .96 
 
 1.03 
 
 1.81 
 
 1.89 
 
 2.07 
 
 2.53 
 
 1.98 
 
 1.03 
 
 1.89 
 
 1.17 
 
 1.03 
 
 .96 
 
 1.03 
 
 1.81 
 
 1.89 
 
 3.12 
 
 2.43 
 
 1.98 
 
 1.03 
 
 1.89 
 
 1.17 
 
 1.03 
 
 .96 
 
 1.03 
 
 1.81 
 
 1.89 
 
 3.22 
 
 2.16 
 
 1.98 
 
 1.03 
 
 2.43 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.81 
 
 1.89 
 
 2.62 
 
 2.16 
 
 1.98 
 
 1.03 
 
 2.43 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.81 
 
 1.89 
 
 3.02 
 
 2.16 
 
 1.98 
 
 1.03 
 
 2.25 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.81 
 
 1.89 
 
 2.53 
 
 2.16 
 
 1.81 
 
 1.03 
 
 3.32 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.89 
 
 1.89 
 
 2.34 
 
 2.16 
 
 1.03 
 
 1.03 
 
 2.53 
 
 1.32 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.89 
 
 1.89 
 
 2.16 
 
 2.16 
 
 1.03 
 
 1.03 
 
 2.16 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.89 
 
 1.89 
 
 2.16 
 
 4.07 
 
 1.03 
 
 1.03 
 
 2.16 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.89 
 
 1.89 
 
 1.98 
 
 2.53 
 
 1.03 
 
 1.03 
 
 2.16 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.89 
 
 1.89 
 
 1.98 
 
 2.07 
 
 1.03 
 
 1.03 
 
 2.07 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.89 
 
 1.89 
 
 1.98 
 
 2.62 
 
 1.03 
 
 1.03 
 
 2.07 
 
 1.17 
 
 1.03 
 
 1.17 
 
 1.03 
 
 1.89 
 
 1.89 
 
 1.98 
 
 2.53 
 
 1.03 
 
 1.25 
 
 2.07 
 
 1.17 
 
 1.03 
 
 1.10 
 
 1.10 
 
 1.89 
 
 1.89 
 
 1.98 
 
 2.34 
 
 1.03 
 
 1.25 
 
 2.07 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.10 
 
 1.89 
 
 1.89 
 
 1.98 
 
 2.25 
 
 1.03 
 
 1.25 
 
 2.07 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.10 
 
 1.89 
 
 1.89 
 
 1.98 
 
 2.25 
 
 1.03 
 
 1.25 
 
 2.16 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.10 
 
 1.81 
 
 1.89 
 
 2.34 
 
 2.16 
 
 1.03 
 
 1.25 
 
 2.16 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.81 
 
 1.89 
 
 2.62 
 
 2.16 
 
 1.03 
 
 1.17 
 
 1.32 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.81 
 
 1.89 
 
 2.43 
 
 1.98 
 
 1.10 
 
 1.25 
 
 1.32 
 
 1.25 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.81 
 
 1.89 
 
 2.16 
 
 1.98 
 
 1.48 
 
 1.17 
 
 1.32 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.81 
 
 1.89 
 
 2.07 
 
 1.98 
 
 2.07 
 
 1.98 
 
 1.32 
 
 1.17 
 
 1.03 
 
 1.03 
 
 1.03 
 
 1.81 
 
 
 2.07 
 
 1.98 
 
 1.17 
 
 1.89 
 
 1.32 
 
 1.17 
 
 .96 
 
 1.03 
 
 1.03 
 
 1.81 
 
 
 
 1.98 
 
 
 
 1.10 
 
 
 
 1.32 
 
 1.17 
 
 
 1.03 
 
 
 Dec. 
 
 1.. 
 2.. 
 3.. 
 4.. 
 5.. 
 
 6.. 
 7.. 
 8.. 
 9.. 
 10.. 
 
 11.. 
 12.. 
 13.. 
 14.. 
 15.. 
 
 16.. 
 17.. 
 18.. 
 19.. 
 20.. 
 
 21.. 
 22.. 
 23.. 
 24.. 
 25.. 
 
 26.. 
 27.. 
 28.. 
 29.. 
 30.. 
 31.. 
 
 1.03 
 1.25 
 2.92 
 2.53 
 2.43 
 
 1.40 
 
 1.25 
 
 1.56 
 1.03 
 1.03 
 1.03 
 
 1.03 
 1.03 
 1.03 
 1.03 
 1.03 
 
 1.64 
 1.25 
 1.10 
 1.03 
 1.03 
 
 1.03 
 1.03 
 1.03 
 1.03 
 1.03 
 1.03 
 
 Note.— Discharge computed from Francis's formula: Q,=3.33 LBP when L=3.0 feet. 
 
 Monthly discharge of Akulikuli Spring at weir near Kapaa, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 January., 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 2.07 
 1.98 
 3.22 
 4.07 
 2.16 
 1.98 
 3.32 
 1.32 
 1.17 
 1.17 
 1.10 
 2.92 
 
 4.07 
 
 1.81 
 1.72 
 1.81 
 1.98 
 1.03 
 1.03 
 1.32 
 1.17 
 
 1.03 
 1.03 
 
 1.87 
 1.88 
 2.20 
 2.23 
 1.53 
 1.16 
 1.97 
 1.21 
 1.04 
 1.01 
 1.04 
 1.29 
 
 1.53 
 
 115.0 
 108.0 
 135.0 
 133.0 
 94.1 
 69.0 
 121.0 
 74.4 
 61.9 
 62.1 
 61.9 
 79.3 
 
 1,110 
 
ISLAND OF KAUAI. 
 
 85 
 
 KAPAHI DITCH AT KAPAHI, NEAR KAPAA, KAUAI. 
 
 Location. — About 4 miles west of Kealia and 600 feet below the diversion dam in 
 
 Kapaa River. 
 Records available. — April 15, 1909, to December 31, 1912. 
 Gage. — Watson clock register; datum unchanged. 
 Discharge measurements. — There is a 20-foot sharp-crested weir immediately 
 
 below the gage, but meter measurements give a different rating from the weir 
 
 formula. 
 Accuracy. — Records good. 
 Cooperation. — Station maintained in cooperation with the Makee Sugar Co. 
 
 The following discharge measurement was made by W. V. Hardy: 
 February 16, 1912: Gage height, 0.31 foot; discharge, 10.6 second-feet. 
 
 Daily gage height, in feet, of Kapahi ditch at Kapahi, near Kapaa, Kauai, for 1912. 
 
 [K. Okimoto, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.26 
 
 2 
 
 .35 
 
 3 
 
 .39 
 
 4 
 
 .39 
 
 5 
 
 .39 
 
 6 
 
 .39 
 
 7 
 
 .39 
 
 8 
 
 .39 
 
 9 
 
 .39 
 
 10 
 
 .39 
 
 11 
 
 .40 
 
 12 
 
 .39 
 
 13 
 
 .44 
 
 14 
 
 .47 
 
 15 
 
 .45 
 
 16 
 
 .42 
 
 17 
 
 .39 
 
 18 
 
 .37 
 
 19 
 
 .37 
 
 20 
 
 
 21. 
 
 
 22 
 
 
 23 
 
 
 24 
 
 
 25 
 
 
 26 
 
 
 27 
 
 
 28 
 
 .35 
 
 29 
 
 .35 
 
 30 
 
 .34 
 
 31 
 
 .33 
 
 0.33 
 
 0.59 
 .42 
 .85 
 .48 
 .39 
 
 0.42 
 .41 
 .38 
 .40 
 .43 
 
 .43 
 .44 
 .43 
 .44 
 .43 
 
 .43 
 
 .42 
 .42 
 .43 
 .42 
 
 .41 
 .52 
 .35 
 .27 
 
 .27 
 
 .26 
 .26 
 .26 
 .30 
 .41 
 
 .41 
 .40 
 .39 
 .37 
 .34 
 
 0.33 
 .33 
 .34 
 .43 
 .40 
 
 .37 
 .35 
 .41 
 .35 
 .33 
 
 .33 
 .36 
 .39 
 .54 
 .67 
 
 .40 
 .39 
 .35 
 .33 
 .33 
 
 .45 
 .42 
 .55 
 .38 
 
 .35 
 
 .65 
 .85 
 .46 
 .44 
 .36 
 
 0.35 
 .35 
 .36 
 .52 
 .42 
 
 .35 
 .34 
 .37 
 .41 
 .36 
 
 .33 
 .33 
 .47 
 .36 
 .37 
 
 32 
 
 0.32 
 .32 
 .32 
 .32 
 
 0.33 
 .32 
 .31 
 .34 
 .61 
 
 .52 
 .43 
 .41 
 .46 
 .42 
 
 .40 
 .36 
 .34 
 .36 
 .43 
 
 .36 
 .35 
 .36 
 .36 
 .38 
 
 .97 
 .60 
 .43 
 .45 
 .34 
 
 ,57 
 
 0.42 
 .46 
 
 .38 
 .35 
 
 .36 
 .35 
 .33 
 
 .32 
 .32 
 .32 
 .31 
 .11 
 
 .18 
 .41 
 .33 
 .36 
 .34 
 
 .35 
 .33 
 .32 
 .31 
 .30 
 
 .30 
 .29 
 .32 
 .37 
 .41 
 
 0.43 
 .34 
 .53 
 .37 
 
 .38 
 
 .37 
 .43 
 .47 
 .43 
 .40 
 
 .48- 
 .40 
 .38 
 .36 
 .42 
 
 .45 
 
 .58 
 .45 
 .42 
 .37 
 .55 
 
 .65 
 .43 
 .41 
 
 .38 
 .42 
 
 0.34 
 .32 
 .32 
 .32 
 
 0.78 
 .57 
 .46 
 .11 
 .04 
 
 .04 
 .05 
 .38 
 .29 
 .40 
 
 Daily discharge, in second-feet, of Kapahi ditch at Kapahi, near Kapaa, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 8.0 
 13.0 
 15.5 
 15.5 
 15.5 
 
 15.5 
 15.5 
 15.5 
 15.5 
 15.5 
 
 11.8 
 11.8 
 11.8 
 11.8 
 11.2 
 
 11.2 
 11.2 
 11.2 
 11.8 
 11.8 
 
 33.5 
 17.6 
 71.0 
 22.4 
 15.5 
 
 15.5 
 23.2 
 22.4 
 27.0 
 16.2 
 
 17.6 
 16.9 
 14.8 
 16.2 
 18.4 
 
 18.4 
 19.2 
 18.4 
 19.2 
 18.4 
 
 11.8 
 11.8 
 12.4 
 18.4 
 16.2 
 
 14.2 
 13.0 
 16.9 
 13.0 
 11.8 
 
 13.0 
 13.0 
 13.6 
 26.0 
 17.6 
 
 13.0 
 12.4 
 14.2 
 16.9 
 13.6 
 
 11.2 
 11.2 
 11.2 
 11.2 
 11.8 
 
 13.6 
 30.0 
 14.8 
 15.5 
 82.0 
 
 11.8 
 11.2 
 10.6 
 12.4 
 36.0 
 
 26.0 
 18.4 
 16.9 
 20.8 
 17.6 
 
 17.6 
 20.8 
 16.2 
 14.8 
 13.0 
 
 45.0 
 16.2 
 13.6 
 13.0 
 11.8 
 
 18.4 
 12.4 
 27.0 
 14.2 
 14.8 
 
 14.2 
 18.4 
 21.6 
 18.4 
 16.2 
 
 12.4 
 11.2 
 11.2 
 11.2 
 20.8 
 
 12.4 
 11.8 
 26.0 
 24.0 
 13.0 
 
 60.0 
 31.0 
 20.8 
 2.0 
 .6 
 
 .6 
 
 2 
 
 3 
 
 4 
 
 5 
 
 6 
 
 7 
 
 8 
 
 .8 
 
 9 
 
 14.8 
 
 10.... 
 
 9.5 
 16.2 
 
 
86 
 
 WATEE KESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, of Kapahi ditch at Kapahi, near Kapaa, Kauai, for 
 
 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 11 
 
 16.2 
 15. 5 
 19.2 
 21.6 
 20.0 
 
 17.6 
 15.5 
 14.2 
 14.2 
 14.2 
 
 14.2 
 14.2 
 13.6 
 13.6 
 13.6 
 
 13.0 
 13.0 
 13.0 
 13.0 
 12.4 
 11.8 
 
 11.2 
 11.2 
 11.2 
 11.2 
 11.2 
 
 10.6 
 10.6 
 10.6 
 10.6 
 10.6 
 
 11.2 
 18.4 
 42.5 
 25.0 
 16.2 
 
 22.4 
 16.9 
 13.6 
 13.6 
 
 12.4 
 j 9.0 
 12.4 
 12.4 
 11.8 
 
 11.8 
 11.8 
 16.2 
 17.6 
 18.4 
 
 18.4 
 17.6 
 17.6 
 17.6 
 20.0 
 
 17.6 
 17.6 
 17.6 
 16.9 
 16.9 
 17.6 
 
 18.4 
 17.6 
 17.6 
 18.4 
 17.6 
 
 16.9 
 26.0 
 13.0 
 8.5 
 
 8.5 
 
 8.0 
 8.0 
 8.0 
 10.0 
 16.9 
 
 16.9 
 16.2 
 15.5 
 14.2 
 12.4 
 
 11.8 
 13.6 
 15.5 
 28.0 
 43.5 
 
 16.2 
 15.5 
 13.0 
 11.8 
 11.8 
 
 13.6 
 20.0 
 17.6 
 29.0 
 14.8 
 
 13.0 
 41.0 
 71.0 
 20.8 
 19.2 
 13.6 
 
 11.8 
 11.8 
 21.6 
 13.6 
 14.2 
 
 "ii.2" 
 
 45.0 
 27.0 
 38.5 
 43.5 
 20.0 
 
 24.0 
 30.0 
 26.0 
 20.0 
 16.9 
 
 16.9 
 17.6 
 
 18.4 
 25.0 
 16.2 
 
 26.0 
 15.5 
 13.6 
 14.2 
 16.2 
 14.2 
 
 16.2 
 13.6 
 12.4 
 13.6 
 18.4 
 
 13.6 
 13.0 
 13.6 
 13.6 
 14.8 
 
 90.0 
 35.0 
 18.4 
 20.0 
 12. 4 
 
 "aifo" 
 
 20.8 
 
 11.2 
 11.2 
 11.2 
 10.6 
 2.0 
 
 4.2 
 16.9 
 11.8 
 13.6 
 12.4 
 
 13.0 
 11.8 
 11.2 
 10.6 
 10.0 
 
 10.0 
 9.5 
 11.2 
 14.2 
 16.9 
 
 22.4 
 16.2 
 14.8 
 13.6 
 17.6 
 
 20.0 
 
 "63.'6" 
 
 32.5 
 20.0 
 17.6 
 14.2 
 29.0 
 
 41.0 
 18.4 
 16.9 
 14.8 
 17.6 
 13.6 
 
 12.4 
 11.8 
 10.6 
 10.0 
 20.0 
 
 13.0 
 10.6 
 13.6 
 14.2 
 19.2 
 
 43.5 
 
 68.0 
 32.5 
 18.4 
 14.8 
 
 12.4 
 11.8 
 11.2 
 27.0 
 31.0 
 
 16.2 
 
 12 
 
 15.5 
 
 13 
 
 9.0 
 
 14 
 
 7.5 
 
 15 
 
 7.5 
 
 16 
 
 10.6 
 
 17 
 
 12.4 
 
 18 
 
 11.8 
 
 19 
 
 16.2 
 
 20 
 
 17.6 
 
 21...'. 
 
 38.5 
 
 22 
 
 17.6 
 
 23 
 
 14.8 
 
 24 
 
 17.6 
 
 25 
 
 17.6 
 
 26.. 
 
 17.6 
 
 27 
 
 16.9 
 
 28 
 
 14.8 
 
 29 
 
 13.0 
 
 30 
 
 13.0 
 
 31 
 
 13.0 
 
 
 
 Note. — The five discharge measurements made in 1911 and 1912 give a very well-denned curve that 
 has a different slope from the curve of weir formula Q=3.33 LHf when L=20 feet. Daily discharge 
 for 1912 determined from curve derived from meter measurements. Discharge interpolated for days for 
 which gage heights are missing, Jan. 20 to 27 and Feb. 2 to 6. 
 
 Monthly discharge of Kapahi ditch at Kapahi, near Kapaa, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 21.6 
 42.5 
 71.0 
 26.0 
 71.0 
 26.0 
 82.0 
 90.0 
 45.0 
 63.0 
 68.0 
 60.0 
 
 8.0 
 10.6 
 
 9.0 
 
 8.0 
 11.8 
 11.2 
 11.2 
 10.6 
 
 2.0 
 
 12.4 
 
 10.0 
 
 .6 
 
 14.8 
 13.9 
 19.1 
 15.5 
 19.2 
 14.8 
 22.5 
 20.4 
 13.5 
 20.7 
 18.7 
 15.3 
 
 910 
 
 800 
 1,170 
 
 922 
 1,180 
 
 471 
 1,380 
 1,090 
 
 803 
 1,150 
 1,110 
 
 941 
 
 B. 
 
 February 
 
 B. 
 
 March 
 
 A. 
 
 April 
 
 A. 
 
 May. 
 
 A. 
 
 June 1-15, 30 
 
 A. 
 
 July 
 
 A. 
 
 August 1-25, 30-31 
 
 A. 
 
 September 
 
 A. 
 
 October 1-16, 20-31 
 
 A. 
 
 November 
 
 A. 
 
 December 
 
 A. 
 
 
 
 The period 
 
 
 
 
 11,900 
 
 
 
 
 
 
 
 Note.— No record obtained June 16-29, Aug. 26-29, and Oct. 17-19. Mean for June is mean of 16 days. 
 Mean for August is mean of 27 days. Mean for October is mean of 27 days. 
 
 KANEHA DITCH AT WEIR NEAR KEALIA, KAUAI. 
 
 Location. — About 5 miles northwest of Kealia, a short distance below the outlet from 
 
 the Kaneha reservoir. 
 Records available. — January 1, 1909, to December 31, 1912. 
 Gage. — Staff gage; read once a day; datum unchanged; record from Watson clock 
 
 register established in 1910 believed unreliable. 
 Discharge measurements. — Made with 20-foot sharp-crested weir. 
 Accuracy. — Fair. 
 Cooperation. — Estimates of daily discharge in million gallons furnished by Makee 
 
 Sugar Co. 
 
ISLAND OF KAUAI. 87 
 
 Daily discharge, in million gallons, of Kaneha ditch at weir near Kealia, Kauai, for 19 IS. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 7.09 
 7.09 
 7.09 
 3.86 
 3.86 
 
 3.86 
 3.86 
 10.90 
 3.86 
 1.36 
 
 1.36 
 1.36 
 3.86 
 7.09 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 3.86 
 1.36 
 1„36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 
 10.90 
 5.39 
 
 10.90 
 
 10.90 
 5.39 
 5.39 
 5.39 
 
 15.40 
 2.50 
 
 10.90 
 3.86 
 1.36 
 
 1.36 
 
 7.09 
 
 7.09 
 
 7.09 
 
 30.90 
 
 30.90 
 10.90 
 30.90 
 7.09 
 15.40 
 
 3.86 
 3.86 
 7.09 
 3.86 
 3.86 
 
 3.86 
 
 3.86 
 
 3.86 
 
 30.90 
 
 30.90 
 
 10.90 
 
 3.86 
 3.86 
 3.86 
 
 1.36 
 1.36 
 1.36 
 1.36 
 25.30 
 
 8.94 
 25.30 
 15.40 
 3.86 
 3.86 
 
 3.86 
 3.86 
 15.40 
 3.86 
 3.86 
 
 3.86 
 3.86 
 10.90 
 7.09 
 3.86 
 
 3.86 
 3.86 
 3.86 
 3.86 
 3.86 
 
 3.86 
 3.86 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 
 7.09 
 3.86 
 15.40 
 7.09 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 
 7.09 
 15.40 
 3.86 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 15.40 
 1.36 
 1.36 
 
 1.36 
 1.36 
 
 3.86 
 3.86 
 
 10.90 
 
 10.90 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 
 20.10 
 
 1.36 
 
 3.86 
 
 25.30 
 
 43.20 
 10.90 
 10.90 
 56.70 
 10.90 
 
 10.90 
 7.09 
 3.86 
 3.86 
 3.86 
 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 10.90 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 20.10 
 3.86 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 3.86 
 7.09 
 1.36 
 3.86 
 1.36 
 
 1.36 
 
 10.90 
 3.86 
 7.09 
 7.09 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 10.90 
 1.36 
 
 36 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 
 7.09 
 7.09 
 1.36 
 1.36 
 1.36 
 
 1.36 
 1.36 
 1.36 
 8.94 
 8.94 
 
 1.36 
 3.86 
 5.39 
 
 8.94 
 3.86 
 10.90 
 5.39 
 5.39 
 
 5.39 
 5.39 
 10.90 
 7.09 
 5.39 
 
 7.09 
 7.09 
 7.09 
 7.09 
 5.39 
 
 7.09 
 5.39 
 7.09 
 20.10 
 15.40 
 
 20.10 
 7.09 
 7.09 
 5.39 
 
 20.10 
 
 8.94 
 5.39 
 5.39 
 5.39 
 7.09 
 5.39 
 
 5.39 
 5.39 
 5.39 
 5.39 
 5.39 
 
 5.39 
 5.39 
 10.90 
 5.39 
 5.39 
 
 5.39 
 5.39 
 5.39 
 5.39 
 5.39 
 
 5.39 
 5.39 
 5.39 
 
 10.90 
 20.10 
 8.94 
 5.39 
 5.39 
 
 5.39 
 5.39 
 5.39 
 13.00 
 13.00 
 
 20.10 
 30.90 
 37.00 
 20.10 
 10.90 
 
 7.09 
 7.09 
 7.09 
 10.90 
 7.09 
 
 7.09 
 7.09 
 7.09 
 7.09 
 7.09 
 
 20.10 
 10.90 
 3.86 
 3.86 
 3.86 
 
 20.10 
 15.40 
 7.09 
 10.90 
 15.40 
 
 10.90 
 3.86 
 1.36 
 1.36 
 1.36 
 1.36 
 
 Note.— Daily discharge, in million gallons, furnished by Makee Sugar Co. Discharge computed from 
 formula for a 20-foot sharp-crested weir without end contractions. Current-meter measurements show the 
 discharge obtained from formula to be too high by 10 to 12 per cent. 
 
 Monthly discharge of Kaneha ditch at weir near Kealia, Kauai, for 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Run-off 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 January 
 
 10.90 
 10.90 
 30.90 
 25.30 
 15.40 
 15.40 
 56.70 
 20.10 
 10.90 
 20.10 
 20. 10 
 37.00 
 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 1.36 
 3.86 
 3.86 
 1.36 
 
 2.97 
 2.90 
 9.96 
 5.99 
 2.98 
 3.21 
 8.20 
 3.54 
 2.95 
 8.22 
 6.77 
 10. 50 
 
 92.12 
 
 February 
 
 84.18 
 
 March 
 
 308. 85 
 
 April 
 
 179. 61 
 
 May 
 
 92.43 
 
 June.. 
 
 96.42 
 
 July 
 
 254. 14 
 
 August 
 
 109. 67 
 
 September 
 
 88.49 
 
 October 
 
 254. 82 
 
 November 
 
 203. 14 
 
 December 
 
 325. 38 
 
 
 
 The year 
 
 56.70 
 
 1.36 
 
 5.71 
 
 2,089.25 
 
 
 ANAHOLA RIVER BASIN. 
 ANAHOLA RIVER AT 1,140-FOOT ELEVATION NEAR KEALIA, KAUAI. 
 
 Location. — About 8 miles northwest of Kealia, Kauai, and 60 feet above the lower 
 
 falls. 
 Records available.— March 28 to December 31, 1912. 
 Gage. — Inclined staff; read at irregular intervals; datum unchanged. 
 Channel. — Rock; probably permanent. 
 Discharge measurements. — Made by wading. 
 
88 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 Discharge measurements of Anahola River at 1,140-foot elevation, near Kealia, Kauai, in 
 
 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 28 
 
 Apr. 21" 
 
 24 
 
 28 
 
 W.V.Hardy 
 
 do 
 
 .....do 
 
 do 
 
 Feet. 
 9.88 
 
 10.00 
 9.87 
 9.82 
 
 Sec.-ft. 
 5.95 
 7.67 
 5.59 
 4.49 
 
 May 1 
 June 26 
 Oct. 24 
 Nov. 11 
 
 W. V. Hardy 
 
 do 
 
 do 
 
 Larrison and Hardy 
 
 Feet. 
 9.72 
 9.56 
 9.79 
 9.74 
 
 Sec.-ft. 
 2.82 
 1.72 
 3.54 
 3.41 
 
 
 
 
 a Measurement made about 5 feet below gage. 
 
 Note.— All measurements made at same section about one-quarter mile above gage unless otherwise 
 noted. 
 
 Daily gage height, in feet, of Anahola River at 1,140-foot elevation, near Kealia, Kauai, 
 
 for 1912. 
 
 [Shiraki, observer.] 
 
 Day. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Nov. 
 
 Day. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Nov. 
 
 1 
 
 
 
 9.72 
 9.72 
 9.72 
 
 '9." 75* 
 
 9.62 
 9.62 
 9.70 
 
 
 17... 
 
 
 
 
 
 
 
 2 
 
 
 
 18 
 
 
 
 
 9.65 
 
 
 
 3.. 
 
 
 
 19 
 
 
 
 9.71 
 
 
 
 4 
 
 
 
 20 
 
 
 
 9.62 
 
 
 
 5... 
 
 
 
 9.78 
 
 9.72 
 
 
 
 21 
 
 
 9.99 
 
 9.72 
 
 
 
 
 
 
 
 
 
 6 
 
 22 
 
 
 9.60 
 "9." 52" 
 
 9.56 
 9.65 
 9.60 
 9.65 
 
 
 
 7 
 
 
 
 9.89 
 
 9.70 
 
 
 
 23 
 
 
 
 9.89 
 "9.'90" 
 
 9.80 
 10.22 
 9.88 
 
 11.15 
 10.35 
 
 
 8 
 
 
 
 
 
 24 
 
 
 9.87 
 9.96 
 
 
 9 
 
 
 
 
 
 9.90 
 11.00 
 
 10.75 
 10.00 
 
 "9.75 
 9.65 
 9.70 
 10.00 
 
 9.72 
 
 25. 
 
 
 
 10 
 
 
 
 9.69 
 
 9.70 
 
 26 
 
 
 
 
 
 
 
 11 
 
 27 
 
 
 
 10.00 
 10.15 
 
 
 12 
 
 
 
 9.67 
 
 i6.'30" 
 
 28 
 
 
 9.82 
 
 
 13 
 
 
 
 29 
 
 
 
 
 14 
 
 
 
 9.72 
 
 30 
 
 
 
 
 9.85 
 9.85 
 
 
 15. 
 
 
 
 9.72 
 
 
 31 
 
 
 
 9.83 
 
 
 
 16. 
 
 
 
 9.83 
 
 
 
 
 
 
 
 
 
 
 
 Note.— Miscellaneous gage readings obtained when observer was in vicinity of station. 
 
 ANAHOLA RIVER ABOVE DAM AT KIOKALA, NEAR KEALIA, KATXAI. 
 
 Location. — About one-fourth mile above the dam at Kiokala and 6 miles northwest 
 of Kealia. 
 
 Records available. — August 22, 1910 to December 31, 1912. 
 
 Gage. — Inclined staff installed August 22, 1910; datum unchanged. Friez automatic 
 gage was carried away by a flood November 2, 1910, and the station relocated at 
 the dam at Kiokala on December 15, 1910, where it was maintained until Decem- 
 ber 28, 1912, when equipment was moved back to its first site about one-fourth 
 mile above the dam, and Friez automatic register was installed. 
 
 Channel. — Bed of stream rocky and permanent. 
 
 Discharge measurements. — By wading and from footbridge. 
 
 Cooperation. — Station maintained in cooperation with the Makee Sugar Co. 
 
 Discharge measurements of Anahola River above dam at Kiokala near Kealia, Kauai, in 
 
 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Apr. 24 
 May 2 
 
 W.V.Hardy 
 
 do 
 
 Feet. 
 
 1.05 
 .90 
 .81 
 
 1.10 
 
 Sec.-ft. 
 17.1 
 11.9 
 8.72 
 19.6 
 
 Dec. 22 
 25 
 28 
 
 W.V.Hardy...... 
 
 do 
 
 Feet. 
 1.38 
 1.17 
 .98 
 
 Sec.-ft. 
 37.7 
 23.0 
 
 do 
 
 do 
 
 13.3 
 
 Dec. 22 
 
 do 
 
 
 
ISLAND OF KAUAI. 
 The following gage readings were made during the year: 
 
 89 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Sept. 
 
 Dec. 
 
 Day. 
 
 Gage 
 height. 
 
 Day. 
 
 Gage 
 height. 
 
 Day. 
 
 Gage 
 height. 
 
 Day. 
 
 Gage 
 height. 
 
 Day. 
 
 Gage 
 height. 
 
 Day. 
 
 Gage 
 height. 
 
 25 
 
 27 
 
 1.10 
 1.00 
 
 4 
 
 10 
 
 18 
 
 25 
 
 28 
 
 0.95 
 .86 
 .92 
 .91 
 
 1.59 
 
 1 
 
 8 
 
 15 
 
 22 
 
 0.90 
 
 .84 
 .81 
 .79 
 
 10 
 
 13 
 
 15 
 
 1.90 
 
 2.09 
 1.41 
 
 19 
 
 1.30 
 
 22 
 
 23 
 
 24 
 
 25 
 
 26 
 
 27 
 
 28 
 
 29 
 
 30 
 
 1.24 
 
 1.08 
 
 1.51 
 
 1.34 
 
 1.24 
 
 1.02 
 
 .96 
 
 .94 
 
 .92 
 
 ANAHOLA DITCH AT KIOKALA, NEAR KEALIA, KAUAI. 
 
 Location. — About 6 miles northwest of Kealia. 
 
 Records available.— May 10, 1909, to December 31, 1912. 
 
 Gage. — Watson clock register; datum unchanged. 
 
 Discharge measurements. — 10-foot sharp-crested weir, iron crest. 
 
 Accuracy. — Records good. 
 
 Cooperation. — Station maintained in cooperation with the Makee Sugar Co. 
 
 Daily discharge, in second-feet, of Andhola ditch at Kiolcala, near Kealia, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 7.5 
 7.5 
 7.5 
 8.7 
 9.7 
 
 6.3 
 3.7 
 1.9 
 .5 
 5.5 
 
 5.5 
 5.5 
 5.7 
 6.6 
 8.1 
 
 7.8 
 8.1 
 7.2 
 6.9 
 8.7 
 
 6.3 
 5.5 
 5.5 
 5.7 
 5.2 
 
 4.9 
 4.4 
 6.6 
 3.9 
 0.0 
 0.0 
 
 5.5 
 6.3 
 
 7.8 
 6.6 
 5.7 
 
 5.5 
 5.5 
 5.2 
 5.2 
 4.9 
 
 5.7 
 4.9 
 4.7 
 
 4.7 
 4.4 
 
 4.4 
 4.2 
 4.7 
 5.5 
 4.2 
 
 4.7 
 7.5 
 14.3 
 13.2 
 10.4 
 
 10.7 
 9.0 
 6.6 
 6.3 
 
 12.5 
 7.8 
 14.3 
 10.4 
 
 7.2 
 
 7.2 
 10.4 
 11.1 
 17.9 
 
 18.7 
 
 17.9 
 16.3 
 20.0 
 20.0 
 15.5 
 
 14.3 
 13.2 
 14.3 
 11.4 
 14.0 
 
 11.8 
 10.4 
 10.4 
 14.0 
 19.1 
 
 15.9 
 14.7 
 13.6 
 12.1 
 11.1 
 11.1 
 
 10.7 
 9.4 
 8.7 
 12.5 
 16.3 
 
 15.9 
 18.3 
 16.3 
 16.3 
 14.3 
 
 13.2 
 12.8 
 13.2 
 15.1 
 13.2 
 
 13.6 
 
 10.7 
 10.7 
 10.4 
 9.4 
 8.4 
 
 7.8 
 7.8 
 7.8 
 8.4 
 
 8.7 
 
 7.8 
 7.5 
 10.7 
 6.9 
 6.0 
 
 5.7 
 8.4 
 7.2 
 13.2 
 15.9 
 
 11.4 
 11.8 
 8.1 
 7.2 
 6.6 
 
 6.3 
 9.4 
 7.8 
 12.5 
 8.1 
 
 6.3 
 9.4 
 16.7 
 14.7 
 10.1 
 8.1 
 
 7.-2 
 6.3 
 6.0 
 6.3 
 5.5 
 
 4.9 
 4.7 
 4.7 
 5.2 
 6.0 
 
 4.7 
 4.9 
 
 7.5 
 6.0 
 4.4 
 
 4.4 
 4.2 
 3.9 
 4.2 
 3.9 
 
 3.4 
 
 '"*4.*2" 
 
 2.8 
 
 2.3 
 1.6 
 2.8 
 2.8 
 .9 
 
 6.3 
 11.8 
 7.2 
 9.7 
 22.0 
 
 22.0 
 
 16.7 
 18.7 
 25.0 
 22.0 
 
 19.1 
 21.0 
 17.5 
 14.7 
 12.5 
 
 11.4 
 
 10.7 
 10.7 
 13.6 
 9.4 
 
 12.5 
 9.4 
 
 8.4 
 
 8.7 
 14.0 
 
 8.7 
 
 7.2 
 6.3 
 6.0 
 
 7.8 
 17.5 
 
 15.1 
 10.1 
 10.1 
 10.4 
 8.1 
 
 7.5 
 7.5 
 6.6 
 16.7 
 18.3 
 
 12.8 
 10.1 
 
 8.4 
 7.5 
 7.8 
 
 9.0 
 15.9 
 12.1 
 9.4 
 9.7 
 
 7.8 
 16.7 
 9.7 
 8.1 
 14.3 
 10.1 
 
 11.8 
 10.4 
 10.4 
 8.1 
 7.2 
 
 15.1 
 10.7 
 9.0 
 
 8.7 
 9.4 
 
 7.2 
 6.3 
 5.7 
 5.5 
 4.9 
 
 6.0 
 11.1 
 6.3 
 6.9 
 6.3 
 
 5.7 
 5.7 
 4.9 
 4.4 
 4.2 
 
 3.9 
 3.7 
 3.9 
 5.7 
 6.0 
 
 6.6 
 4.9 
 8.7 
 5.2 
 5.2 
 
 4.9 
 6.9 
 10.1 
 11.1 
 11.1 
 
 10.7 
 9.7 
 8.1 
 
 11.1 
 7.5 
 
 8.7 
 6.0 
 7.5 
 18.7 
 12.5 
 
 14.0 
 9.7 
 8.1 
 7.2 
 9.0 
 
 15.5 
 10.7 
 8.1 
 8.7 
 10.7 
 9.4 
 
 6.9 
 6.0 
 7.2 
 6.0 
 10.4 
 
 7.2 
 6.3 
 9.4 
 15.1 
 7.5 
 
 6.3 
 5.7 
 5.2 
 4.7 
 9.4 
 
 6.6 
 4.9 
 6.0 
 6.6 
 5.2 
 
 12.1 
 16.7 
 16.7 
 10.7 
 
 7.8 
 
 6.9 
 6.0 
 6.9 
 14.7 
 16.3 
 
 17.9 
 
 2 
 
 17.5 
 
 3 
 
 16.7 
 
 4 
 
 16.7 
 
 5 
 
 14.7 
 
 6 
 
 6.6 
 
 7 
 
 14.7 
 
 8 
 
 16.7 
 
 9 
 
 16.3 
 
 10 -.. 
 
 14.7 
 
 11 
 
 13.2 
 
 12 
 
 11.8 
 
 13 
 
 11.1 
 
 14 
 
 9.7 
 
 15 
 
 9.0 
 
 16 
 
 10 7 
 
 17 
 
 15.9 
 
 18 
 
 12 1 
 
 19 
 
 12 5 
 
 20 
 
 12 5 
 
 21 
 
 13.2 
 
 22 
 
 13.6 
 
 23 
 
 12.8 
 
 24 
 
 14 3 
 
 25 
 
 14 3 
 
 26 
 
 13.6 
 
 27.: 
 
 11.8 
 
 28 
 
 10 7 
 
 29 
 
 9.7 
 
 30 
 
 9.4 
 
 31 
 
 9 
 
 
 
 Note. — Discharge computed from Francis's formula: Q=3.33 LH T when L=10 feet. Comparative 
 measurements made in 1911 show a seepage loss in ditch between intake and weir. To find discharge at 
 intake multiply discharge given by factor 1.55. 
 
90 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of Andhola ditch atKiohala, near Kealia, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 January 
 
 February 
 
 March 
 
 April a 
 
 May 
 
 June& 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The period 
 
 9.7 
 14.3 
 20.0 
 18.3 
 16.7 
 
 7.5 
 25.0 
 18.3 
 15.1 
 18.7 
 16.7 
 17.9 
 
 0.0 
 4.2 
 7.2 
 8.4 
 5.7 
 2.8 
 .9 
 6.0 
 3.7 
 4.9 
 4.7 
 
 5.71 
 6.49 
 
 13.5 
 
 12.8 
 9.17 
 5.01 
 1.21 
 
 10.5 
 7.17 
 9.24 
 8.58 
 
 13.0 
 
 351.0 
 373.0 
 830.0 
 534.0 
 564.0 
 229.0 
 744.0 
 646.0 
 427.0 
 568.0 
 511.0 
 799.0 
 
 25.0 
 
 C9.06 
 
 ,580 
 
 a Ditch was dry Apr. 17-25. Mean for April is the mean of 21 days when ditch carried water, 
 ft No record June 22-28; clock register out of order. Mean for June is the mean of 23 days. 
 c Mean for year is mean for 350 days. 
 
 KALIHIWAI RIVER BASIN. 
 KALIHIWAI RIVER NEAR KILATJEA, KA.TJAI. 
 
 Location. — About 2 miles southwest of Kilauea, at an elevation of about 600 feet, 
 about 5 miles above mouth of river and one-half mile below Hoopouli Falls, and 
 is reached by saddle horse on trail from Princeville plantation. 
 
 Records available. — August 21 to December 31, 1912. 
 
 Gage. — A vertical staff gage; read once each day; hour of reading irregular. 
 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made by wading. 
 
 Cooperation. — Station maintained in cooperation with the Princeville plantation. 
 
 The following discharge measurement was made by W. V. Hardy: 
 August 21, 1912: Gage height, 6.22 feet; discharge, 33.9 second-feet. 
 
 Daily gage height, in feet, of Kalihiwai River near Kilauea, Kauai, for 1912. 
 
 [Kakimoto, observer.] 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 6.20 
 6.25 
 6.20 
 6.20 
 6.20 
 
 6.40 
 6.25 
 6.20 
 6.20 
 6.20 
 
 6.20 
 6.20 
 6.15 
 6.10 
 6.10 
 
 6.00 
 5.95 
 5.92 
 5.85 
 5.85 
 
 5.92 
 5.98 
 6.70 
 6.30 
 6.10 
 
 6.00 
 6.00 
 6.00 
 5.95 
 5.90 
 
 6.10 
 6.00 
 6.00 
 5.98 
 6.10 
 
 6.25 
 6.00 
 6.00 
 6.25 
 6.00 
 
 6.00 
 5.98 
 5.98 
 5.95 
 6.10 
 
 6.18 
 6.30 
 6.6 
 11.70 
 7.10 
 
 6.6 
 
 6.4 
 
 6.4 
 
 6.35 
 
 6.35 
 
 6.32 
 6.30 
 6.30 
 6.40 
 6.35 
 
 16 
 
 
 6.10 
 
 6.08 
 6.08 
 6.50 
 6.50 
 
 6.00 
 5.92 
 5.90 
 5.95 
 5.85 
 
 5.80 
 5.80 
 5.80 
 5.80 
 5.90 
 
 6.10 
 6.00 
 6.05 
 6.20 
 6.40 
 
 6.60 
 6.10 
 6.20 
 6.30 
 6.25 
 
 6.27 
 6.25 
 6.20 
 6.18 
 6.15 
 6.13 
 
 6.00 
 6.00 
 6.20 
 6.10 
 6.75 
 
 6.20 
 6.18 
 6.10 
 6.15 
 6.10 
 
 6.10 
 6.05 
 6.15 
 6.20 
 6.10 
 
 6.30 
 
 2 
 
 
 17 
 
 
 6.33 
 
 3 
 
 
 18 
 
 
 6.38 
 
 4 
 
 
 19 
 
 
 6.35 
 
 5 
 
 
 20 
 
 
 6.30 
 
 6 
 
 
 21 
 
 22 
 
 23 
 
 24 
 
 25 
 
 26 
 
 27 
 
 28 
 
 29 
 
 30 
 
 31 
 
 6.20 
 6.80 
 6.30 
 6.20 
 6.20 
 
 6.20 
 6.70 
 6.30 
 6.35 
 6.30 
 6.25 
 
 6.30 
 
 7 
 
 
 6.30 
 
 8 
 
 
 6.45 
 
 9 
 
 
 6.40 
 
 10 
 
 
 6.40 
 
 11 
 
 
 6.38 
 
 12 
 
 
 6.35 
 
 13 
 
 
 6.30 
 
 14 
 
 
 6.28 
 
 ]5 
 
 
 6 27 
 
 
 
 6.20 
 
ISLAND OF KAUAI. 
 
 91 
 
 HANALEI RIVER BASIN. 
 HANALEI RIVER NEAR HANALEI, KAUAI. 
 
 Location.— About 5 miles up the river from Hanalei. 
 Records available. — December 28, 1911, to December 31, 1912. 
 Gage. — Staff gage; read once daily; datum unchanged. 
 Channel. — Bowlders; probably permanent. 
 Discharge measurements. — Cable and car. 
 
 Discharge measurements of Hanalei River near Hanalei, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 20 
 
 W. V. Hardy 
 
 Feet. 
 6.39 
 7.42 
 
 Sec.-ft. 
 86.7 
 
 Aug. 14 
 
 do L 
 
 665 
 
 
 
 
 Daily gage height, in feet, of Hanalei River near Hanalei, Kauai, for 1912. 
 
 [Sam Opio, observer.] 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 
 8 
 
 9 
 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 6.50 
 6.55 
 6.55 
 6.50 
 
 6.50 
 6.60 
 6.60 
 6.70 
 6.50 
 
 6.40 
 6.40 
 6.40 
 6.70 
 6.50 
 
 6.50 
 6.50 
 6.50 
 6.50 
 6.50 
 
 6.50 
 6.50 
 6.50 
 6.50 
 
 6.50 
 6.50 
 6.50 
 6.50 
 6.50 
 6.50 
 
 6.5 
 6.5 
 6.5 
 6.4 
 6.4 
 
 6.5 
 6.5 
 6.5 
 6.5 
 6.5 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.5 
 
 6.5 
 6.5 
 6.5 
 6.5 
 6.5 
 
 6.5 
 6.5 
 6.5 
 
 6.5 
 6.5 
 6.5 
 6.5 
 
 6.5 
 6.5 
 
 6.6 
 6.7 
 6.7 
 6.7 
 6.9 
 
 6.8 
 6.7 
 6.6 
 6.7 
 
 6.7 
 6.7 
 6.7 
 6.5 
 6.5 
 
 6.5 
 6.5 
 6.5 
 7.0 
 7.3 
 
 6.5 
 6.5 
 6.5 
 
 6.5 
 6.5 
 6.5 
 6.6 
 
 7.8 
 7.8 
 7.8 
 7.8 
 
 7.6 
 7.6 
 7.6 
 7.5 
 7.5 
 
 7.9 
 
 7.8 
 7.7 
 
 6.9 
 6.7 
 6.7 
 6.7 
 6.7 
 
 6.7 
 6.7 
 6.7 
 6.7 
 6.7 
 
 6.6 
 6.6 
 
 6.5 
 6.6 
 6.6 
 
 6.5 
 6.6 
 6.4 
 
 6.4 
 6.5 
 6.5 
 6.5 
 6.5 
 
 6.5 
 6.8 
 6.8 
 6.7 
 6.5 
 6.5 
 
 6.5 
 6.5 
 6.4 
 6.4 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.4 
 6.4 
 6.5 
 6.4 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.5 
 6.4 
 6.4 
 6.4 
 6.5 
 
 6.5 
 6.5 
 6.4 
 6.4 
 
 6.5 
 6.5 
 6.5 
 6.5 
 6.5 
 
 6.5 
 6.4 
 6.4 
 6.4 
 
 6.5 
 . 6.5 
 6.4 
 6.4 
 6.4 
 
 6.5 
 6.5 
 6.4 
 6.4 
 6.5 
 6.5 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.4 
 
 6.4 
 6.4 
 7.8 
 6.5 
 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.4 
 7.0 
 6.6 
 6.5 
 6.4 
 
 6.5 
 
 8.1 
 6.6 
 6.5 
 6.6 
 6.5 
 
 6.5 
 6.6 
 6.6 
 6.5 
 
 6.5 
 6.4 
 6.4 
 
 6.4 
 6.4 
 
 6.5 
 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.3 
 7.2 
 6.5 
 6.4 
 
 6.4 
 6.3 
 6.3 
 6.3. 
 
 6.4 
 
 6.4 
 6.4 
 6.4 
 
 6.9 
 6.7 
 6.4 
 6.4 
 6.4 
 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.5 
 
 6.5 
 
 6.5 
 
 6.5 
 
 6.5 
 
 6.4 
 6.4 
 6.4 
 6.5 
 
 6.4 
 6.4 
 6.5 
 6.4 
 6.5 
 
 6.6 
 
 6.8 
 6.5 
 6.4 
 6.4 
 
 6.4 
 6.4 
 6.4 
 6.4 
 6.4 
 
 6.7 
 6.9 
 7.3 
 6.5 
 6.4 
 
 6.4 
 6.5 
 6.6 
 6.5 
 
 6.5 
 6.5 
 6.5 
 6.5 
 
 6.5 
 6.5 
 6.5 
 6.5 
 6.5 
 
 6.6 
 
 6.8 
 6.7 
 
 6.5 
 6.5 
 6.5 
 6.5 
 6.5 
 
92 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, of Hanalei River near Hanalei, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 171 
 127 
 149 
 149 
 127 
 
 127 
 171 
 171 
 220 
 127 
 
 88 
 88 
 88 
 220 
 127 
 
 127 
 127 
 127 
 127 
 127 
 
 127 
 127 
 127 
 127 
 171 
 
 127 
 ■ 127 
 127 
 127 
 127 
 127 
 
 127 
 127 
 127 
 
 88 
 88 
 
 127 
 127 
 127 
 127 
 127 
 
 88 
 88 
 88 
 88 
 127 
 
 127 
 127 
 127 
 127 
 127 
 
 127 
 127 
 127 
 171 
 171 
 
 127 
 127 
 127 
 127 
 
 127 
 127 
 171 
 171 
 171 
 
 171 
 220 
 220 
 220 
 330 
 
 330 
 273 
 220 
 171 
 220 
 
 220 
 220 
 220 
 127 
 127 
 
 127 
 127 
 127 
 389 
 582 
 
 220 
 171 
 171 
 127 
 127 
 127 
 
 127 
 127 
 127 
 171 
 171 
 
 171 
 930 
 930 
 930 
 930 
 
 790 
 790 
 790 
 720 
 720 
 
 171 
 
 1,530 
 
 1,000 
 
 930 
 
 860 
 
 330 
 
 220 
 220 
 220 
 220 
 
 220 
 
 220 
 220 
 220 
 220 
 
 220 
 171 
 171 
 171 
 171 
 
 127 
 171 
 171 
 171 
 171 
 
 171 
 
 88 
 
 88 
 
 171 
 
 273 
 
 171 
 171 
 127 
 171 
 
 88 
 
 88 
 127 
 127 
 127 
 127 
 
 127 
 273 
 273 
 220 
 127 
 127 
 
 127 
 127 
 
 88 
 88 
 88 
 
 88 
 88 
 88 
 88 
 88 
 
 88 
 88 
 88 
 88 
 88 
 
 88 
 88 
 88 
 88 
 88 
 
 88 
 88 
 127 
 88 
 88 
 
 88 
 88 
 88 
 88 
 88 
 
 127 
 88 
 88 
 88 
 
 127 
 
 127 
 1-27 
 88 
 88 
 171 
 
 127 
 127 
 -127 
 127 
 127 
 
 88 
 127 
 88 
 88 
 88 
 
 127 
 127 
 
 88 
 88 
 88 
 
 127 
 127 
 88 
 88 
 127 
 127 
 
 88 
 88 
 88 
 88 
 88 
 
 88 
 88 
 88 
 88 
 88 
 
 88 
 88 
 88 
 930 
 127 
 
 88 
 88 
 88 
 88 
 88 
 
 88 
 389 
 171 
 127 
 
 88 
 
 127 
 1,150 
 171 
 127 
 171 
 127 
 
 127 
 171 
 
 171 
 127- 
 171 
 
 1,530 
 171 
 
 127 
 
 88 
 88 
 
 88 
 88 
 88 
 88 
 88 
 
 127 
 88 
 88 
 88 
 88 
 
 88 
 88 
 
 88 
 88 
 88 
 
 88 
 88 
 88 
 88 
 88 
 
 88 
 88 
 88 
 88 
 88 
 
 55 
 
 55 
 
 515 
 
 127 
 
 88 
 
 88 
 55 
 55 
 55 
 55 
 
 88 
 88 
 88 
 88 
 330 
 
 330 
 
 220 
 
 88 
 88 
 88 
 
 171 
 88 
 171 
 127 
 127 
 88 
 
 88 
 88 
 88 
 88 
 127 
 
 127 
 127 
 171 
 171 
 127 
 
 127 
 88 
 88 
 88 
 
 127 
 
 88 
 88 
 
 127 
 88 
 
 127 
 
 171 
 273 
 127 
 
 88 
 
 88 
 
 88 
 88 
 88 
 88 
 88 
 
 220 
 
 2 
 
 330 
 
 3 
 
 582 
 
 4 
 
 127 
 
 5 
 
 88 
 
 6 
 
 88 
 
 7 
 
 127 
 
 8 
 
 171 
 
 9 
 
 127 
 
 10 -. 
 
 171 
 
 11 
 
 171 
 
 12 
 
 127 
 
 13 
 
 127 
 
 14 
 
 127 
 
 15 
 
 127 
 
 16 
 
 127 
 
 17 
 
 127 
 
 18 
 
 127 
 
 19 
 
 127 
 
 20 
 
 127 
 
 21 
 
 171 
 
 22 
 
 273 
 
 23 
 
 220 
 
 24 
 
 330 
 
 25 
 
 171 
 
 26 
 
 171 
 
 27 : . . . 
 
 127 
 
 28 
 
 127 
 
 29 
 
 127 
 
 30 
 
 127 
 
 31 
 
 127 
 
 
 
 Monthly discharge of Hanalei River near Hanalei, Kauai, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 Minimum. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 220 
 
 171 
 
 582 
 
 1,530 
 
 273 
 
 127 
 
 171 
 
 1,150 
 
 1,530 
 
 515 
 
 273 
 
 582 
 
 1,530 
 
 55 
 
 136.0 
 122.0 
 205.0 
 508.0 
 161.0 
 91.9 
 111.0 
 173.0 
 152.0 
 124.0 
 114.0 
 171.0 
 
 55 
 
 172.0 
 
 8,360 
 7,020 
 
 12,600 
 
 30,200 
 9,900 
 5,470 
 6,820 
 
 10,600 
 9,040 
 7,620 
 6,780 
 
 10,500 
 
 125,000 
 
 CHINA DITCH NEAR HANALEI, KAUAI. 
 
 Location. — About one-fourth mile below the point of diversion from Hanalei River 
 
 and nearly opposite Sam Opio's house. 
 Records available. — December 28, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once each day, about 10 a. m.; datum unchanged. 
 Channel. — Probably permanent. 
 Discharge measurements. — Made from footbridge. 
 
ISLAND OF KAUAI. 93 
 
 Discharge measurements of China ditch near Hanalei, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 20 
 
 W. V. Hardy. 
 
 Feet. 
 3.50 
 4.00 
 
 Sec.-ft. 
 15.4 
 
 Aug. 14 
 
 ..do 
 
 33.0 
 
 
 
 Daily gage height, in feet, of China ditch near Hanalei, Kauai, for 1912. 
 [Sam Opio, observer.] 
 
 Day. 
 
 21.. 
 22.. 
 23.. 
 24.. 
 25.. 
 
 Jan. 
 
 3.4 
 
 3.3 
 
 3.35 
 
 3.3 
 
 3.3 
 
 3.3 
 3.4 
 3.4 
 3.6 
 3.5 
 
 3.4 
 3.4 
 3.5 
 3.6 
 3.4 
 
 3.4 
 3.4 
 3.4 
 3.4 
 3.4 
 
 3.4 
 3.4 
 3.4 
 3.4 
 3.5 
 
 3.4 
 3.4 
 3.4 
 3.4 
 3.4 
 3.4 
 
 Feb. 
 
 3.4 
 3.4 
 3.4 
 3.3 
 3.3 
 
 3.4 
 3.4 
 3.4 
 
 3.4 
 
 3.4 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.5 
 3.5 
 3.5 
 3.5 
 3.5 
 
 2.5 
 3.5 
 3.5 
 3.6 
 3.6 
 
 3.4 
 
 3.4 
 3.5 
 3.6 
 
 Mar. 
 
 3.6 
 3.5 
 3.6 
 3.5 
 3.5 
 
 3.3 
 
 3.4 
 3.4 
 3.4 
 2.9 
 
 2.9 
 
 2.8 
 2.7 
 2.7 
 2.8 
 
 2.8 
 2.8 
 2.9 
 2.9 
 3.0 
 
 3.0 
 3.0 
 3.0 
 3.0 
 3.2 
 
 2.9 
 
 2.8 
 2.8 
 2.7 
 2.7 
 2.7 
 
 Apr. 
 
 6 
 
 7 
 7 
 
 7 
 
 5 
 
 3.5 
 
 3.4 
 
 3.4 
 
 3.4 
 3.4 
 3.4 
 3.3 
 3.3 
 
 2.8 
 5.1 
 
 4.9 
 4.8 
 4.6 
 
 May. 
 
 3.1 
 3.1 
 
 3.2 
 
 3.6 
 3.5 
 3.5 
 3.3 
 
 June. 
 
 0.33 
 .33 
 .32 
 .32 
 .32 
 
 .32 
 .32 
 .32 
 .32 
 .32 
 
 .32 
 .32 
 .32 
 .32 
 .32 
 
 .32 
 .32 
 .32 
 .33 
 .32 
 
 .32 
 .32 
 .33 
 .32 
 .32 
 
 .32 
 .32 
 .32 
 .32 
 .32 
 
 July. 
 
 3.3 
 3.2 
 3.2 
 3.2 
 3.3 
 
 3.3 
 3.4 
 3.4 
 3.4 
 3.5 
 
 JSA 
 
 3.4 
 3.4 
 3.5 
 3.5 
 
 3.4 
 3.4 
 3.4 
 3.4 
 3.4 
 
 3.3 
 3.3 
 3.2 
 3.2 
 3.3 
 
 3.3 
 3.3 
 3.2 
 3.2 
 3.3 
 3.3 
 
 Aug. 
 
 3.2 
 3.2 
 3.2 
 4.6 
 3.4 
 
 3.2 
 
 3.2 
 3.2 
 3.2 
 3.2 
 
 3.2 
 
 4.2 
 3.6 
 3.4 
 3.3 
 
 3.4 
 4.8 
 3.6 
 3.4 
 3.5 
 3.4 
 
 Sept. 
 
 5.1 
 3.6 
 3.2 
 3.2 
 3.2 
 
 3.2 
 
 3.2 
 3.2 
 3.2 
 3.2 
 
 3.6 
 
 4.0 
 4.0 
 4.0 
 
 3.9 
 3.9 
 3.9 
 3.8 
 
 3.8 
 3.8 
 4.0 
 4.0 
 4.0 
 
 Oct. 
 
 4.0 
 4.0 
 4.0 
 4.0 
 4.0 
 
 3.9 
 3.9 
 
 5.8 
 4.2 
 4.0 
 
 4.0 
 3.9 
 3.9 
 3.9 
 3.9 
 
 4.0 
 4.0 
 4.0 
 4.0 
 4.9 
 
 4.9 
 4.3 
 4.0 
 4.0 
 4.0 
 
 4.5 
 
 4.0 
 4.5 
 4.3 
 4.3 
 4.0 
 
 Nov. 
 
 4.0 
 4.0 
 4.0 
 4.0 
 4.2 
 
 4.2 
 4.2 
 4.3 
 4.3 
 4.1 
 
 4.3 
 
 4.6 
 
 Dec. 
 
 5.9 
 4.2 
 4.1 
 
 4.1 
 4.2 
 3.6 
 3.2 
 3.3 
 
 3. 
 3. 
 
 3. 
 3. 
 3. 
 3. 
 3.1 
 
 3.2 
 
 3.5 
 3.4 
 3.7 
 3.2 
 
 3.2 
 3.2 
 3.2 
 3.2 
 3.2 
 3.2 
 
 KTJNA DITCH NEAR HANALEI, KAOAI. 
 
 Location. — About 4 miles up the river from Hanalei and 500 feet below the intake. 
 
 Records available. — January 17 to December 31, 1912. 
 
 Gage. — Vertical staff; read once daily, in the morning; datum unchanged. 
 
 Channel. — Probably permanent. 
 
 Discharge measurements. — Made from a footbridge. 
 
 Accuracy. — Records fair. 
 
 Discharge measurements of Kuna ditch near Hanalei, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 17 
 
 W. V.Hardy 
 
 Feet. 
 3.83 
 4.40 
 5.12 
 
 Sec.-ft. 
 10.9 
 
 Feb. 20 
 
 do 
 
 18.5 
 
 Aug. 19 
 
 .....do 
 
 32.5 
 
 
 
 
94 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Kuna ditch near Hanalei, Kauai, for 1912. 
 [W. K. Samuel, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 3.8 
 3.8 
 3.8 
 3.7 
 3.7 
 
 3.8 
 3.8 
 3.8 
 3.8 
 3.8 
 
 4.4 
 4.4 
 4.4 
 4.4 
 4.4 
 
 4.4 
 4.4 
 4.4 
 4.4 
 4.4 
 
 4.4 
 4.4 
 4.4 
 4.0 
 4.0 
 
 4.5 
 4.5 
 4.5 
 4.5 
 
 4.5 
 4.5 
 4.6 
 4.6 
 4.6 
 
 4.6 
 
 4.7 
 4.7 
 4.7 
 4.8 
 
 4.8 
 4.7 
 4.7 
 4.6 
 
 4.7 
 
 4.7 
 4.7 
 4.8 
 4.8 
 4.9 
 
 4.9 
 4.9 
 4.9 
 5.1 
 5.3 
 
 4.8 
 4.7 
 4.7 
 4.6 
 4.6 
 4.6 
 
 4.5 
 4.5 
 4.5 
 4.6 
 4.6 
 
 4.6 
 4.9 
 4.9 
 
 4.8 
 
 4.8 
 
 4.7 
 4.7 
 4.7 
 4.6 
 4.6 
 
 4.4 
 5.6 
 5.3 
 5.2 
 5.0 
 
 4.9 
 4.6 
 4.7 
 
 4.7 
 4.7 
 
 4.7 
 4.7 
 4.7 
 4.7 
 4.7 
 
 4.7 
 4.6 
 4.6 
 4.6 
 4.6 
 
 4.6 
 4.6 
 4.6 
 4.6 
 4.6 
 
 4.6 
 4.5 
 4.5 
 4.6 
 
 4.8 
 
 4.6 
 4.6 
 4.5 
 4.5 
 4.5 
 
 4.5 
 4.6 
 4.6 
 4.6 
 4.6 
 
 4.6 
 4.9 
 4.9 
 4.7 
 4.6 
 4.5 
 
 4.5 
 4.5 
 4.5 
 .4.5 
 4.5 
 
 4.5 
 4.5 
 4.4 
 4.4 
 4.4 
 
 4.4 
 4.4 
 4.4 
 4.4 
 4.4 
 
 4.4 
 4.4 
 4.4 
 4.5 
 4.4 
 
 4.4 
 4.4 
 4.5 
 4.4 
 4.4 
 
 4.4 
 4.4 
 4.4 
 4.4 
 4.4 
 
 5.5 
 5.3 
 5.3 
 5.3 
 
 5.4 
 
 5.4 
 5.4 
 5.3 
 5.3 
 
 5.4 
 
 5.3 
 5.3 
 5.3 
 5.5 
 5.5 
 
 5.4 
 5.3 
 5.3 
 5.3 
 5.3 
 
 5.3 
 5.3 
 5.3 
 5.3 
 5.3 
 
 5.4 
 5.4 
 5.4 
 5.4 
 5.4 
 5.3 
 
 5.3 
 5.3 
 5.1 
 5.1 
 5.1 
 
 5.1 
 5.1 
 5.1 
 5.1 
 5.1 
 
 5.1 
 5.1 
 5.1 
 5.8 
 5.3 
 
 5.2 
 5.2 
 5.1 
 5.1 
 5.1 
 
 5.1 
 5.8 
 5.2 
 5.2 
 
 5.2 
 
 5.4 
 5.8 
 5.5 
 5.4 
 5.5 
 5.4 
 
 5.3 
 5.5 
 5.5 
 5.5 
 5.5 
 
 5.8 
 5.3 
 5.3 
 5.3 
 5.3 
 
 5.3 
 5.3 
 5.3 
 5.3 
 5.3 
 
 5.5 
 5.3 
 5.3 
 
 5.2 
 5.2 
 
 5.2 
 5.0 
 5.0 
 5.0 
 4.9 
 
 4.9 
 4.9 
 
 4.8 
 4.8 
 4.8 
 
 4.7 
 4.7 
 4.7 
 4.7 
 4.7 
 
 4.7 
 4.7 
 5.5 
 5.1 
 4.8 
 
 4.8 
 4.7 
 4.7 
 4.7 
 4.7 
 
 4.8 
 4.8 
 4.8 
 4.8 
 5.8 
 
 5.8 
 5.6 
 4.8 
 
 4.8 
 4.8 
 
 5.1 
 4.8 
 5.1 
 5.0 
 5.0 
 4.8 
 
 4.8 
 4.8 
 4.8 
 4.8 
 5.0 
 
 5.0 
 5.0 
 
 5.1 
 5.1 
 5.4 
 
 5.4 
 5.3 
 5.3 
 5.3 
 5.5 
 
 5.4 
 5.4 
 5.5 
 5.4 
 5.5 
 
 5.6 
 5.8 
 5.5 
 5.4 
 5.4 
 
 5.4 
 5.4 
 5.3 
 5.3 
 5.3 
 
 5.6 
 
 2 
 
 
 5.8 
 
 3 
 
 
 6.2 
 
 4 
 
 
 5.5 
 
 5 
 
 
 5.4 
 
 6. . 
 
 
 5.4 
 
 7.... 
 
 
 5.5 
 
 8 
 
 
 4.2 
 
 9 
 
 
 4.1 
 
 10 
 
 
 4.2 
 
 11 
 
 
 4.2 
 
 12 
 
 
 4.1 
 
 13 
 
 
 4.1 
 
 14 
 
 
 4.1 
 
 15 
 
 
 4.1 
 
 16 
 
 
 4.1 
 
 17 
 
 3.8 
 3.8 
 3.8 
 3.8 
 
 3.8 
 3.8 
 3.8 
 3.8 
 3.9 
 
 3.8 
 3.8 
 3.8 
 3.8 
 3.8 
 3.8 
 
 4.1 
 
 
 4.1 
 
 19 
 
 4.1 
 
 
 4.1 
 
 21 
 
 4.2 
 
 22 
 
 4.5 
 
 23 
 
 4.4 
 
 24 
 
 4.7 
 
 25 
 
 4.2 
 
 26 
 
 3.2 
 
 27 
 
 3.2 
 
 28 
 
 3.2 
 
 29 
 
 3.2 
 
 30 
 
 3.2 
 
 31 
 
 3.2 
 
 
 
 Daily discharge, in second-feet, of Kuna ditch near Hanalei, Kauai, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 10.4 
 10.4 
 10.4 
 10.4 
 
 10.4 
 10.4 
 10.4 
 10.4 
 11.5 
 
 10.4 
 10.4 
 10.4 
 10.4 
 10.4 
 10.4 
 
 10.4 
 10.4 
 10.4 
 9.3 
 9.3 
 
 10.4 
 10.4 
 10.4 
 10.4 
 10.4 
 
 18.4 
 18.4 
 18.4 
 18.4 
 18.4 
 
 18.4 
 18.4 
 18.4 
 18.4 
 18.4 
 
 18.4 
 18.4 
 18.4 
 12.7 
 12.7 
 
 20.0 
 20.0 
 20.0 
 20.0 
 
 20.0 
 20.0 
 22.0 
 22.0 
 22.0 
 
 22.0 
 24.0 
 24.0 
 24.0 
 26.0 
 
 26.0 
 24.0 
 24.0 
 22.0 
 24.0 
 
 24.0 
 24.0 
 26.0 
 26.0 
 28.0 
 
 28.0 
 28.0 
 28.0 
 32.0 
 37.0 
 
 26.0 
 24.0 
 24.0 
 22.0 
 22.0 
 22.0 
 
 20.0 
 20.0 
 20.0 
 22.0 
 22.0 
 
 22.0 
 28.0 
 28.0 
 26.0 
 26.0 
 
 24.0 
 24.0 
 24.0 
 22.0 
 22.0 
 
 18.4 
 44.0 
 37.0 
 35.0 
 30.0 
 
 28.0 
 22.0 
 24.0 
 
 24. 
 24. 
 
 24. 
 24. 
 24. 
 24. 
 24.0 
 
 24.0 
 22.0 
 22.0 
 22.0 
 22.0 
 
 22.0 
 22.0 
 22.0 
 22.0 
 22.0 
 
 22.0 
 20.0 
 20.0 
 22.0 
 26.0 
 
 22.0 
 22.0 
 20.0 
 20.0 
 20.0 
 
 20.0 
 22.0 
 22.0 
 22.0 
 22.0 
 
 22.0 
 28.0 
 28.0 
 24.0 
 22.0 
 20.0 
 
 20.0 
 20.0 
 20.0 
 20.0 
 20.0 
 
 20.0 
 20.0 
 18.4 
 18.4 
 18.4 
 
 18.4 
 18.4 
 18.4 
 18.4 
 18.4 
 
 18.4 
 18.4 
 18.4 
 20.0 
 18.4 
 
 18.4 
 18.4 
 20.0 
 18.4 
 18.4 
 
 18.4 
 18.4 
 18.4 
 18.4 
 18.4 
 
 42.0 
 37.0 
 37.0 
 37.0 
 39.0 
 
 39.0 
 39.0 
 37.0 
 37.0 
 39.0 
 
 37.0 
 37.0 
 37.0 
 42.0 
 42.0 
 
 39.0 
 37.0 
 37.0 
 37.0 
 37.0 
 
 37.0 
 37.0 
 37.0 
 37.0 
 37.0 
 
 39..0 
 39.0 
 39.0 
 39.0 
 39.0 
 37.0 
 
 37.0 
 37.0 
 32.0 
 32.0 
 32.0 
 
 32.0 
 32.0 
 32.0 
 32.0 
 32.0 
 
 32.0 
 32.0 
 32.0 
 49.0 
 37.0 
 
 35,0 
 35.0 
 32.0 
 32.0 
 32.0 
 
 32.0 
 49.0 
 35.0 
 35.0 
 35.0 
 
 39.0 
 49.0 
 42.0 
 39.0 
 42.0 
 39.0 
 
 37.0 
 42.0 
 42.0 
 42.0 
 42.0 
 
 49.0 
 37.0 
 37.0 
 37.0 
 37.0 
 
 37.0 
 37.0 
 37.0 
 37.0 
 37.0 
 
 42.0 
 37.0 
 37.0 
 35.0 
 35.0 
 
 35.0 
 30.0 
 30.0 
 30.0 
 28.0 
 
 28.0 
 28.0 
 26.0 
 26.0 
 26.0 
 
 24.0 
 24.0 
 24.0 
 24.0 
 24.0 
 
 24.0 
 24.0 
 42.0 
 32.0 
 26.0 
 
 26.0 
 24.0 
 24.0 
 24.0 
 24.0 
 
 26.0 
 26.0 
 26.0 
 26.0 
 49.0 
 
 49.0 
 44.0 
 26.0 
 26.0 
 26.0 
 
 32.0 
 26.0 
 32.0 
 30.0 
 30.0 
 26.0 
 
 26.0 
 26.0 
 26.0 
 26.0 
 30.0 
 
 30.0 
 30.0 
 32.0 
 32.0 
 39.0 
 
 39.0 
 37.0 
 37.0 
 37.0 
 42.0 
 
 39.0 
 39.0 
 42.0 
 39.0 
 42.0 
 
 44.0 
 49.0 
 42.0 
 39.0 
 39.0 
 
 39.0 
 39.0 
 37.0 
 37.0 
 37.0 
 
ISLAND OF KAUAI. 
 
 Monthly discharge of Kuna ditch near Hanalei, Kauai, for 1912. 
 
 95 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 17-31 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September . . . 
 
 October 
 
 November 
 
 December 
 
 11.5 
 20.0 
 37.0 
 44.0 
 28.0 
 20.0 
 42.0 
 49.0 
 49.0 
 49.0 
 49.0 
 60.0 
 
 10.4 
 9.3 
 20.0 
 18.4 
 20.0 
 
 18.4 
 37.0 
 32.0 
 26.0 
 24.0 
 26.0 
 5.0 
 
 a 10. 5 
 15.4 
 24.7 
 25.2 
 22.2 
 18.9 
 38.1 
 35.9 
 35.3 
 28.7 
 36.4 
 20.1 
 
 The period . 
 
 &26.7 
 
 312 
 886 
 1,520 
 1,500 
 1,360 
 1,120 
 2,340 
 2,210 
 2,100 
 1,760 
 2,170 
 1,240 
 
 18,500 
 
 a Mean for January is mean for 15 days. 
 
 b Mean for year is mean for 351 days. 
 
 LUMAHAI RIVER BASIN. 
 LTTMAHAI RIVER NEAR WAINIHA, KATTAI. 
 
 Location. — About 4£ miles west of Hanalei and 300 feet below the point at which 
 
 the Kauai Electric Co.'s power line crosses the river. 
 Records available. — March 24 to December 31, 1912. 
 Gage. — Staff; datum unchanged. 
 Channel. — Rocky; probably permanent. 
 Discharge measurements. — Made from wire suspension bridge. 
 
 Discharge measurements of Lumahai River near Wainiha, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 18 
 
 W.V.Hardy 
 
 Feet. 
 
 Sec.-ft. 
 74.7 
 
 Mar. 26 
 
 do 
 
 7.99 
 a8.08 
 
 154 
 
 Aug. 16 
 
 d(K : 
 
 107 
 
 
 
 
 a Dam was built about 125 feet below the gage during April, 1912. 
 Note.— Gage heights unreliable, not published. 
 
 WAINIHA RIVER BASIN. 
 
 WAINIHA RIVER NEAR WAINIHA, KAUAI. 
 
 Location. — About 2 miles south of Wainiha and just northeast of the Kauai Electric 
 Co . ' s power house . 
 
 Records available. — East Channel, February 25 to December 31, 1912. West 
 Channel, December 30, 1911, to December 31, 1912. 
 
 Gage. — Inclined timber gages on both channels; read twice daily, 7 a. m. and 5 p. m. 
 
 Channels. — There are two large channels, the East Channel and the West Channel, 
 and two gages have to be maintained to obtain the total flow of the river at this 
 point; both channels rocky and probably permanent. The natives build fish 
 dams at the point where the river divides above the stations, and these shift the 
 water from one channel to the other. 
 
 Discharge measurements. — Made from wire suspension bridges over each channel. 
 
 Cooperation. — Stations maintained in cooperation with the Kauai Electric Co. 
 
96 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements of East Channel of Wainiha River near Wainiha, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 19 
 
 W. V. Hardy 
 
 Feet. 
 6.44 
 8.90 
 6.89 
 
 Sec-ft. 
 6.6 
 
 25 
 
 
 364 
 
 Aug. 23 
 
 do 
 
 18.5 
 
 
 
 Daily gage height, in feet, of East Channelof Wainiha River near Wainiha, Kauai, for 1912 
 
 [Kauai Electric Co., observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 7.95 
 7.75 
 7.95 
 7.55 
 7.65 
 
 7.70 
 7.45 
 7.70 
 8.25 
 8.85 
 
 9.85 
 8.55 
 8.05 
 7.75 
 7.40 
 
 7.20 
 6.95 
 6.80 
 6.45 
 7.10 
 
 7.00 
 6.70 
 6.55 
 7.10 
 9.15 
 
 7.25 
 7.00 
 7.20 
 6.90 
 6.85 
 6.85 
 
 7.10 
 6.90 
 6.75 
 7.15 
 7.15 
 
 7.95 
 
 8.85 
 9.20 
 8.80 
 7.75 
 
 7.55 
 7.65 
 7.35 
 7.20 
 7.25 
 
 6.95 
 7.35 
 7.00 
 6.65 
 6.45 
 
 6.50 
 6.60 
 6.65 
 6.70 
 6.75 
 
 6.80 
 6.65 
 6.60 
 6.65 
 6.50 
 
 6.65 
 6.70 
 6.85 
 6.90 
 7.05 
 
 7.00 
 7.10 
 7.20 
 6.80 
 6.70 
 
 6.70 
 6.70 
 6.80 
 8.15 
 
 7.75 
 
 7.10 
 7.05 
 6.95 
 6.80 
 6.80 
 
 6.85 
 7.15 
 6.90 
 7.00 
 6.85 
 
 6.80 
 7.00 
 8.85 
 7.90 
 7.10 
 6.90 
 
 6.80 
 6.80 
 6.80 
 6.90 
 6.80 
 
 6.80 
 6.80 
 6.80 
 6.90 
 6.80 
 
 6.80 
 6.80 
 6.90 
 6.80 
 6.85 
 
 6.90 
 6.80 
 6.90 
 6.95 
 7.00 
 
 7.00 
 6.85 
 6.85 
 6.95 
 6.80 
 
 6.80 
 6.80 
 6.70 
 6.70 
 6.70 
 
 6.75 
 6.70 
 6.70 
 6.70 
 6.85 
 
 6.95 
 7.25 
 6.75 
 7.08 
 8.12 
 
 8.20 
 7.40 
 8.70 
 7.55 
 7.30 
 
 6.88 
 8.05 
 6.82 
 6.75 
 6.75 
 
 6.85 
 6.75 
 6.75 
 6.85 
 6.70 
 
 6.95 
 6.75 
 6.60 
 6.65 
 6.75 
 6.70 
 
 6.60 
 6.58 
 6.50 
 6.55 
 6.80 
 
 6.95 
 7.05 
 7.20 
 7.10 
 6.65 
 
 6.80 
 6.75 
 6.95 
 8.75 
 7.20 
 
 6.80 
 6.65 
 6.60 
 6.60 
 6.60 
 
 6.90 
 7.05 
 6.85 
 6.80 
 6.68 
 
 6.70 
 
 7.80 
 7.65 
 7.65 
 8.15 
 7.95 
 
 7.40 
 7.30 
 7.20 
 6.90 
 6.75 
 
 8.80 
 7.35 
 6.90 
 6.90 
 6.70 
 
 6.70 
 6.68 
 6.50 
 6.42 
 6.50 
 
 6.50 
 6.70 
 6.58 
 6.50 
 6.50 
 
 6.55 
 6.85 
 6.65 
 6.62 
 6.55 
 
 6.50 
 6.50 
 6.65 
 6.70 
 6.70 
 
 6.85 
 6.80 
 7.30 
 6.65 
 6.80 
 
 6.75 
 6.75 
 6.82 
 6.85 
 7.00 
 
 6.70 
 6.70 
 6.80 
 6.80 
 6.70 
 
 6.85 
 7.22 
 7.05 
 7.38 
 7.40 
 
 8.05 
 7.30 
 7.10 
 6.80 
 6.85 
 
 8.70 
 7.20 
 7.20 
 6.90 
 7.00 
 7.15 
 
 6.80 
 6.60 
 6.70 
 6.65 
 6.65 
 
 6.60 
 6.70 
 7.80 
 8.30 
 6.90 
 
 6.75 
 6.60 
 6.60 
 6.60 
 6.85 
 
 6.75 
 6.70 
 6.75 
 7.05 
 6.85 
 
 8.30 
 8.35 
 8.00 
 6.95 
 6.75 
 
 6.70 
 
 6.65 
 6.70 
 8.15 
 8.30 
 
 8.55 
 
 2 
 
 
 
 10.05 
 
 3 
 
 
 
 11.35 
 
 4 
 
 
 
 8.35 
 
 5 
 
 
 
 7.20 
 
 6 
 
 
 
 7.05 
 
 7 
 
 
 
 6.85 
 
 8 
 
 
 
 6.95 
 
 9 
 
 
 
 6.95 
 
 10 
 
 
 
 6.70 
 
 11 
 
 
 
 6.65 
 
 12 
 
 
 
 6.60 
 
 13 
 
 
 
 6.70 
 
 14 
 
 
 
 6.65 
 
 15 
 
 
 
 6.70 
 
 16 
 
 
 
 6.85 
 
 17 
 
 
 
 6.70 
 
 18 
 
 
 
 6.70 
 
 19 
 
 
 
 6.75 
 
 20 
 
 
 
 7.05 
 
 21 
 
 
 
 6.95 
 
 22 
 
 
 
 7.05 
 
 23 
 
 
 
 7.70 
 
 24 
 
 
 
 8.50 
 
 25 
 
 
 6.70 
 
 6.60 
 6.80 
 6.75 
 6.85 
 
 8.25 
 
 26 '.. 
 
 
 8.00 
 
 27 
 
 
 6.90 
 
 28 
 
 
 6.85 
 
 29 
 
 
 6.70 
 
 30 
 
 
 6.70 
 
 31 
 
 
 
 6.70 
 
 
 
 
 
 Discharge measurements of West Channelof Wainiha River near Wainiha, Kauai, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 19 
 
 W. V. Hardy 
 
 Feet. 
 5.60 
 6.55 
 5.74 
 
 Sec-ft. 
 143 
 
 24 
 
 do 
 
 578 
 
 Aug. 23 
 
 do 
 
 162 
 
 
 
ISLAND OF KAUAI. 
 
 97 
 
 Daily gage height, in feet, of West Channel of Wainiha River near Wainiha, Kauai, for 1913, 
 
 [Kauai Electric Co., observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 5.40 
 5.50 
 5.60 
 5.50 
 5.60 
 
 5.50 
 5.50 
 5.70 
 5.60 
 5.55 
 
 5.40 
 5.50 
 5.70 
 5.60 
 5.50 
 
 5.40 
 5.40 
 5.40 
 5.40 
 5.40 
 
 5.40 
 5.40 
 5.45 
 5.70 
 5.55 
 
 5.45 
 5.60 
 5.50 
 5.50 
 5.55 
 6.60 
 
 5.45 
 5.75 
 5.80 
 5.75 
 5.60 
 
 5.50 
 5.50 
 5.55 
 5.60 
 5.60 
 
 5.65' 
 
 5.55 
 
 5.55 
 
 5.55 
 
 5.55 
 
 5.50 
 5.50 
 5.65 
 5.60 
 5.65 
 
 5.95 
 6.10 
 6.20 
 6.10 
 6.90 
 
 5.85 
 5.95 
 5.75 
 5.80 
 
 6.20 
 5.95 
 6.15 
 5.90 
 5.90 
 
 6.15 
 5.90 
 6.00 
 6.35 
 6.75 
 
 6.90 
 6.30 
 6.00 
 5.90 
 5.75 
 
 5.75 
 5.75 
 5.65 
 5.55 
 5.95 
 
 6.00 
 5.75 
 6.65 
 5.90 
 6.55 
 
 5.95 
 
 5.80 
 5.90 
 6.80 
 5.80 
 5.85 
 
 5.95 
 5.80 
 5.65 
 5.90 
 6.00 
 
 6.30 
 6.55 
 6.70 
 6.65 
 6.15 
 
 5.90 
 6.00 
 5.85 
 5.90 
 5.95 
 
 5.85 
 6.20 
 6.95 
 5.65 
 5.65 
 
 5.55 
 6.55 
 5.55 
 5.60 
 5.65 
 
 5.75 
 5.90 
 5.70 
 5.75 
 5.65 
 
 5.60 
 5.60 
 5.62 
 5.65 
 5.75 
 
 5.60 
 5.60 
 5.70 
 5.60 
 5.50 
 
 5.50 
 5.50 
 5.85 
 6.25 
 6.00 
 
 5.65 
 5.65 
 5.55 
 5.60 
 5.60 
 
 5.65 
 5.75 
 5.65 
 5.75 
 5.65 
 
 5.60 
 5.80 
 6.30 
 6.00 
 5.60 
 5.60 
 
 5.60 
 5.55 
 5.50 
 5.60 
 6.55 
 
 6.50 
 5.50 
 5.50 
 5.60 
 5.50 
 
 5.50 
 5.50 
 5.60 
 5.50 
 5.55 
 
 5.55 
 5.50 
 5.70 
 5.75 
 5.70 
 
 5.65 
 5.55 
 5.65 
 5.70 
 5.55 
 
 5.50 
 5.58 
 5.50 
 5.50 
 5.50 
 
 5.55 
 5.50 
 5.50 
 5.50 
 5.60 
 
 5.70 
 
 5.80 
 5.65 
 5.70 
 6.15 
 
 6.05 
 5.70 
 6.15 
 5.95 
 5.85 
 
 5.70 
 6.05 
 5.65 
 6. CO 
 5.55 
 
 5.60 
 5.60 
 5.60 
 5.65 
 5.60 
 
 5.75 
 6.60 
 5.50 
 5.55 
 5.55 
 5.50 
 
 5.50 
 5.50 
 5.50 
 5.40 
 5.70 
 
 5.75 
 5.80 
 5.95 
 5.90 
 5.60 
 
 5.65 
 5.55 
 5.70 
 6.45 
 6.00 
 
 5.70 
 6.55 
 5.50 
 5.50 
 5.50 
 
 5.70 
 5.80 
 5.70 
 5.65 
 5.70 
 
 5.60 
 6.30 
 5.90 
 5.75 
 6.40 
 6.00 
 
 6.10 
 6.05 
 5.95 
 5.80 
 5.65 
 
 6.55 
 
 5.95 
 
 5.80 
 
 5.7 
 
 5.55 
 
 5.5 
 
 5.5 
 
 5.45 
 
 5.40 
 
 5.50 
 
 5.50 
 
 5.60 
 
 5.5 
 
 5.5 
 
 5.5 
 
 5.5 
 
 5.70 
 
 5.52 
 
 5.45 
 
 5.45 
 
 5.40 
 5.40 
 5.60 
 5.60 
 5.50 
 
 5.58 
 5.55 
 6.00 
 5.50 
 5.65 
 
 5.62 
 5.55 
 5.60 
 5.68 
 5.70 
 
 5.50 
 5.55 
 5.55 
 5.55 
 5.50 
 
 5.60 
 5.85 
 5.70 
 6.10 
 6.15 
 
 6.35 
 5.95 
 5.80 
 5.65 
 5.70 
 
 6.40 
 
 5.85 
 5.95 
 5.70 
 5.70 
 5.85 
 
 5.65 
 5.55 
 5.60 
 5.55 
 5.50 
 
 5.50 
 
 5.55 
 5.95 
 6.30 
 5.85 
 
 5.65 
 5.50 
 5.50 
 5.50 
 5.85 
 
 5.70 
 5.60 
 5.75 
 5.95 
 5.75 
 
 6.25 
 6.25 
 5.90 
 6.70 
 5.65 
 
 5.60 
 5.50 
 5.50 
 6.05 
 6.20 
 
 6.50 
 
 2 
 
 6.95 
 
 8 
 
 7.70 
 
 4 
 
 6.30 
 
 5 
 
 5.90 
 
 6 
 
 5.95 
 
 7 
 
 5.75 
 
 8 
 
 5.80 
 
 9 
 
 5.80 
 
 10 
 
 5.60 
 
 11 
 
 5.60 
 
 12 
 
 5.50 
 
 13 
 
 5.60 
 
 14 
 
 5.60 
 
 15 
 
 5.60 
 
 16 
 
 5.75 
 
 17 
 
 5.60 
 
 18 
 
 5.60 
 
 19 
 
 6.78 
 
 20 
 
 6.20 
 
 
 5.80 
 
 22 
 
 6.95 
 
 23 
 
 6.35 
 
 24 
 
 6.30 
 
 25 
 
 6.05 
 
 26 
 
 5.85 
 
 27 
 
 5.62 
 
 28 
 
 5.60 
 
 29 
 
 5.60 
 
 30 
 
 5.60 
 
 81 
 
 5.60 
 
 
 
 WAINIHA CANAL AT INTAKE, NEAR WAINIHA, KAUAI. 
 
 Location. — At 700-foot elevation, just below the point of diversion and about 4 miles 
 
 above the Kauai Electric Co.'s power house. 
 Records available. — August 1, 1910, to December 31, 1912. 
 Channel. — Probably permanent. 
 Cooperation. — Gage heights furnished by Kauai Electric Co. 
 
 The following discharge measurement was made by W. V. Hardy: 
 I March 20, 1912: Gage height, 4.14 feet; discharge, 80.0 second-feet. 
 
 Daily gage height, in feet, of Wainiha canal at intake, near Wainiha, Kauai, for 1912. 
 
 [Kauai Electric Co., observer.] 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 1.50 
 4.10 
 4.35 
 4.10 
 
 3.50 
 3.50 
 3.50 
 4.00 
 4.00 
 
 2.50 
 3.40 
 3.40 
 3.40 
 3.50 
 
 3.90 
 3.50 
 3.40 
 3.40 
 
 4.00 
 4.00 
 4.70 
 4.70 
 4.70 
 
 4.70 
 4.70 
 4.70 
 4.70 
 4.70 
 
 4.70 
 4.70 
 4.70 
 4.70 
 4.70 
 
 4.70 
 4.70 
 4.60 
 4.55 
 4.70 
 
 4.70 
 4.70 
 4.70 
 4.70 
 4.70 
 
 4.70 
 4.70 
 4.70 
 4.70 
 4.70 
 
 3.55 
 3.55 
 4.70 
 4.70 
 4.65 
 
 4.15 
 4.10 
 4.70 
 4.10 
 3.85 
 
 3.60 
 3.50 
 3.75 
 4.70 
 4.70 
 
 4.05 
 4.05 
 3.70 
 3.90 
 3.70 
 
 3.60 
 3.45 
 3.40 
 4.45 
 4.10 
 
 3.60 
 3.90 
 4.35 
 4.70 
 4.50 
 
 3.75 
 3.75 
 3.50 
 3.75 
 4.20 
 
 4.35 
 4.70 
 3.90 
 3.65 
 4.70 
 
 4..70 
 4.70 
 4.50 
 4.70 
 4.70 
 
 3.65 
 3.45 
 3.35 
 3.30 
 
 4.20 
 
 4.40 
 4.20 
 4.70 
 4.70 
 440 
 
 4.60 
 4.50 
 4.60 
 4.70 
 4,70 
 
 4.70 
 4.70 
 4.70 
 4.70 
 2.55 
 
 4.70 
 4.70 
 4.70 
 4.70 
 
 3.80 
 3.90 
 3.65 
 3.55 
 3.45 
 
 4.20 
 3.70 
 4.50 
 3.C5 
 4.15 
 
 3.65 
 4.20 
 4.60 
 4.40 
 4.40 
 
 4.00 
 3.60 
 3.40 
 3.65 
 3.50 
 
 4.60 
 4.05 
 4.40 
 4.15 
 4.60 
 
 4.40 
 4.35 
 4.30 
 3.80 
 4.70 
 
 4.35 
 4.00 
 3.75 
 3.55 
 
 4.10 
 
 4.70 
 4.70 
 0.00 
 0.00 
 0.00 
 
 1.50 
 1.50 
 2.60 
 4.50 
 4.50 
 
 4.10 
 3.70 
 3.60 
 3.60 
 3.90 
 
 14694°— wsp 336—14- 
 
98 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Wainiha canal at intake near Wainiha, Kauai, for 1912 — 
 
 Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 
 3.30 
 3.30 
 3.30 
 3.40 
 3.30 
 
 4.00 
 4.00 
 4.00 
 4.00 
 4.00 
 
 4.00 
 4.00 
 4.00 
 4.00 
 
 4.70 
 2.50 
 2.80 
 4.00 
 4.00 
 
 4.00 
 4.25 
 4.00 
 4.50 
 4.60 
 
 4.70 
 4.70 
 4.70 
 4.70 
 4.70 
 4.70 
 
 4.70 
 4.70 
 4.70 
 4.70 
 4.60 
 
 4.45 
 4.45 
 4.40 
 4.20 
 4.40 
 
 4.70 
 4.40 
 4.50 
 3.90 
 3.65 
 ...... 
 
 4.70 
 4.50 
 4.10 
 3.95 
 4.35 
 
 4.40 
 4.70 
 4.70 
 4.70 
 4.65 
 
 4.50 
 4.70 
 4.60 
 3.50 
 4.70 
 4.30 
 
 4.60 
 4.00 
 4.80 
 4.70 
 4.35 
 
 4.70 
 4.40 
 4.50 
 4.70 
 4.25 
 
 4.00 
 4.15 
 3.70 
 3.45 
 3.40 
 
 4.70 
 4.70 
 4.50 
 4.00 
 3.90 
 
 4.20 
 4.50 
 4.50 
 4.70 
 4.40 
 
 4.30 
 3.90 
 3.80 
 4.00 
 4.40 
 3.80 
 
 4.60 
 4.10 
 3.80 
 3.60 
 3.55 
 
 4.70 
 
 4.50 
 4.40 
 4.50 
 4.20 
 
 4.20 
 4.70 
 4.70 
 4.70 
 4.70 
 4.70 
 
 4.05 
 4.13 
 3.50 
 3.50 
 3.45 
 
 8.75 
 4.10 
 3.50 
 3.20 
 3.20 
 
 3.20 
 3.20 
 3.80 
 4.15 
 4.10 
 
 4.00 
 4.10 
 4.50 
 4.70 
 4.70 
 
 4.70 
 
 4.70 
 4.70 
 4.35 
 4.40 
 
 4.70 
 4.70 
 4.70 
 4.60 
 4.60 
 4.70 
 
 4.40 
 3.90 
 4.40 
 4.70 
 4.65 
 
 4.70 
 4.70 
 4.70 
 4.70 
 4.70 
 
 3.80 
 3.65 
 3.55 
 4.70 
 4.70 
 
 4.10 
 
 17 
 
 
 3.50 
 
 18 
 
 
 3.40 
 
 19 
 
 
 3.40 
 
 20 
 
 
 4.70 
 
 21 
 
 
 4.50 
 
 22 
 
 
 4.70 
 
 23 
 
 
 4.70 
 
 24 
 
 
 4.70 
 
 25 
 
 
 2.00 
 
 26 
 
 
 4.70 
 
 27 
 
 
 0.00 
 
 28 
 
 
 0.00 
 
 29 
 
 
 1.60 
 
 
 
 4.00 
 
 31 
 
 
 
 4.00 
 
 
 
 
 
 Note.— Power plant was partly closed for repairs Jan. 5-31. 
 
 MISCELLANEOUS MEASUREMENTS ON KAUAI IN 1912. 
 [By W. V. Hardy.J 
 
 Date. 
 
 Stream. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 27 
 
 29 
 
 Mar. 20 
 
 Feb. 11 
 
 12 
 
 12 
 
 12 
 
 12 
 
 12 
 
 12 
 
 Jan. 19 
 
 20 
 
 20 
 
 21 
 
 Feb. 11 
 
 11 
 
 11 
 
 Apr. 4 
 
 Dec. 13 
 
 May 5 
 
 July 31 
 
 Jan. 22 
 
 31 
 
 Feb. 19 
 
 19 
 
 Aug. 21 
 
 21 
 
 Feb. 12 
 
 Nov. 18 
 
 Feb. 28 
 
 Jan. 22 
 
 31 
 
 Feb. 12 
 
 Jan. 31 
 
 22 
 
 Dec. 3 
 
 Feb. 11 
 
 11 
 
 11 
 
 11 
 
 11 
 
 July 3 
 
 Aug. 7 
 
 Oct. 7 
 
 Wainiha canal at Tunnel No. 18, near Wainiha. . 
 
 ....do 
 
 ....do 
 
 Wilcox ditch above county road near Koloa 
 
 Huleia River below county road near Lihue 
 
 Hakenanahu Stream above county road, Lihue. . 
 
 Kamooloa ditch below county road, Lihue 
 
 Hooleinakaunualihua ditch below county road. . 
 Hooleinakaunualihua Stream below county road . 
 
 Puhi Stream below county road near Lihue 
 
 Kahiliholo Stream below stone dam. Kilauea 
 
 Kilauea River below confluence, Kilauea. 
 
 Waiule ditch, intake, above reservoir, Kilauea 
 
 Kalihiwai intake ditch above reservoir, Kilauea 
 
 Lawai Stream, west, Homestead, Kauai 
 
 Lawai Stream, east, Lawai, Kauai 
 
 Lawai ditch ? Lawai 
 
 Hanapepe ditch, Hanapepe weir, Makaueli 
 
 Manuahi Stream above Hanapepe River 
 
 Uhau lole Stream 400 feet below falls 
 
 North Wailua River above mouth of East Branch.. 
 
 Kiaiakua Stream below county road, Hanalei 
 
 Kiaiakua ditch below county road, Hanalei 
 
 Kalihiwai River, 1J miles above mouth 
 
 West Branch Kalihiwai just above confluence 
 
 Kalihiwai River below Kaapua Falls 
 
 Kalihiwai River above Kaapua Falls 
 
 Halehaku Stream below county road, Lihue 
 
 North Fork Halekua Stream trail crossing, Waimea. 
 
 East Branch Kapaia Stream below county road 
 
 Kaua ditch below county road, Hanalei 
 
 Moloaa Stream below county road, Kilauea 
 
 Nawiliwili Stream above county road, Lihue 
 
 Papaa Stream above county road, Kilauea 
 
 Poakumu Stream above county road, Kilauea 
 
 Waimea River at bridge at Waimea 
 
 Omuu Stream above old county road, Koloa 
 
 Eleele ditch above county road, Eleeie 
 
 Poeloelo Stream above old county road, Koloa 
 
 Waihohonu Stream below old county road, Koloa. . . 
 
 Wahiaua Stream below county road, Eleele 
 
 Kauaikanana Stream near Waimea 
 
 do 
 
 ....do 
 
 Feet. 
 3.40 
 3.70 
 4.14 
 
 HI 
 
 Sec-feet. 
 
 67.3 
 
 77.4 
 
 91.4 
 
 6.07 
 
 2.11 
 
 .20 
 
 8.33 
 
 3.72 
 
 1.77 
 
 .75 
 
 9.20 
 
 8.83 
 
 3.85 
 
 1.17 
 
 1.64 
 
 .10 
 
 .26 
 
 4.07 
 
 3.43 
 
 4.79 
 
 15.00 
 
 .28 
 
 1.06 
 
 21.3 
 
 1.84 
 
 638.4 
 
 628.3 
 
 1.96 
 
 .69 
 
 1.81 
 
 1.27 
 
 2.11 
 
 1.46 
 
 .75 
 
 1.27 
 
 9,780.00 
 
 .27 
 
 2.25 
 
 .08 
 
 .13 
 
 .50 
 
 a Head in inches on 12-foot sharp-crested weir. 
 
 6 River fluctuating. 
 
ISLAND OF KAUAI. 
 
 99 
 
 PUMPED WATER ON KAUAI. 
 
 Several small pumping plants on Kauai are used to pump under- 
 ground water for irrigation at very dry times or to lift fresh, water 
 to higher elevations. At only one place, however, is pumped water 
 from underground sources depended upon as a regular irrigation 
 supply. 
 
 The McBryde Sugar Co. has five electric plants with seven pumps 
 and two steam plants with two pumps which are used for pumping 
 underground water from Hanapepe and Lawai valleys. 
 
 During 1912 the quantity of water pumped daily by this company 
 averaged 25,600,000 gallons, or 39.6 second-feet. A large part of 
 this water is lifted more than 400 feet. 
 
 DITCH SEEPAGE AND LOSSES ON KAUAI. 
 
 The following investigations of ditch seepage and losses have been 
 made during the year at the request of plantation and power company 
 
 officials: 
 
 Ditch and canal loss or gain, 1912. 
 
 Wainiha canal (Kauai Electric Co.). 
 
 Date and hour. 
 
 Jan. 27: 
 
 9 a. m 
 
 10 a. m 
 
 11 a. m 
 
 11.40 a.m. . 
 
 Jan. 29: 
 
 11.10 a. m.. 
 
 Noon 
 
 3.15 p.m... 
 4.15 p.m... 
 
 Location. 
 
 6,000 feet below intake 
 
 6,225 feet below intake 
 
 6,490 feet below intake 
 
 6,815 feet below intake 
 
 7,115 feet below intake 
 
 7,440 feet below intake 
 
 4,500 feet above forebay 
 
 3,865 feet above forebay 
 
 Stone Dam ditch (near Kilauea). 
 
 450 feet below intake at Stone Dam 
 Added to above by inflow from mill supply ditch 3,500 feet 
 below Stone Dam intake. 
 
 Total 
 At bridge 5,500 feet below Stone Dam intake 
 
 Waiuli ditch (near Kilauea). 
 
 300 feet below reservoir 
 
 Discharge of lateral ditch diverting at point 4,500 feet below 
 reservoir. 
 
 Without loss or gain there should be remaining in ditch below 
 
 diversior. 
 Discharge at wasteway 
 
 Without loss or gain there should be remaining in ditch below 
 wasteway. 
 
 Below wasteway at point about 16,000 feet below reservoir 
 
 At bridge on Kilauea-Kolako road 
 
 Discharge. 
 
 Second-feet. 
 67.3 
 66.6 
 64.3 
 63.2 
 
 60.2 
 77.4 
 75.8 
 
 Loss or 
 gain. 
 
 Second-feet. 
 
 -0.7 
 -2.3 
 -1.1 
 
 -2.4 
 -1.6 
 
 Jan. 19: 
 
 2.45 p.m... 
 4p.m 
 
 4.45 p.m. 
 
 Jan. 20: 
 lp.m... 
 2 p.m... 
 
 2.30 p. m 
 
 3p.m... 
 4p.m... 
 
 12.1 
 4.2 
 
 7.9 
 0.7 
 
 7.2 
 
 8.4 
 6.6 
 
 +1.2 
 
 -1.8 
 
100 
 
 Ditch and canal loss or gain, 1912 — Continued. 
 WaluU Intake ditch (near Kilauea). 
 
 Date and hour. 
 
 Location. 
 
 Discharge. 
 
 Loss or 
 gain. 
 
 Jan. 21: 
 8 a.m. 
 
 9.30 a.m... 
 
 60 feet below headgate 
 
 Surface drainage into ditch between points of measurements . 
 
 Total 
 
 About 7,000 feet below headgate 
 
 Second-feet. 
 
 3.7 
 
 .2 
 
 3.6 
 
 Second-feet. 
 
 -0.3 
 
 Hanapepe ditch (near Eleele). 
 
 Mar. 6: 
 
 10 a. m 
 
 Flume No. 6, J mile below intake 
 
 43.6 
 .6 
 
 
 
 Surface drainage added to canal between flumes No. 6 and 
 No. 25. 
 
 Total 
 
 
 
 44.2 
 39.4 
 
 44.1 
 42.1 
 
 
 
 Flume No. 25, 3| miles below intake 
 
 —4.8 
 
 Mar. 7: 
 
 4p.m 
 
 4.50 p.m... 
 
 Flume No. 35 
 
 
 "Flump. Nn. Sfi, 9.p(\() fp.p.t hp.lnw flump. Nn. 35 . . 
 
 —2.0 
 
 
 
 Note. — These measurements were made to determine leakage at flume No. 36. 
 
 ISLAND OF OAHTJ. 
 
 PALOLO STREAM BASIN. 
 WAIOMAO STREAM AT 900-FOOT ELEVATION * NEAR HONOLULU, OAHTL 
 
 Location. — About 3 miles above Pukele in the Palolo Valley and about 9 miles from 
 Honolulu. 
 
 Records available.— October 10, 1911, to December 31, 1912. 
 
 Gage. — Watson weekly clock register above 3-foot sharp-crested weir; datum uncer- 
 tain on account of leaks under weir. 
 
 Channel. — One channel at all stages; shifting. 
 
 Discharge measurements. — By wading. 
 
 Diversions. — None above station; proposed to divert all of low-water discharge by 
 pipe line for Honolulu water supply in 1913. 
 
 Accuracy. — Records poor, owing to uncertainty regarding leakage around and under 
 the weir. 
 
 Discharge measurements of Waiomao Stream at 900-foot elevation, near Honolulu, Oahu, 
 
 in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 May 15 
 21 
 21 
 21 
 21 
 
 Pierce and Hardy. . 
 
 W.V.Hardy 
 
 do 
 
 do 
 
 do 
 
 Feet. 
 0.01 
 .34 
 .30 
 .25 
 .20 
 
 Sec.-ft. 
 0.39 
 2.87 
 2.70 
 2.09 
 1.64 
 
 June 17 
 July 29 
 Oct. 4 
 Nov. 25 
 Dec. 20 
 
 W. B. Hardy 
 
 C. H. Pierce 
 
 G. K. Larrison 
 
 Larrison and Dort. . 
 G. K. Larrison 
 
 Feet. 
 0.11 
 .07 
 .07 
 .22 
 .24 
 
 Sec.-ft. 
 
 0.82 
 
 .44 
 
 a. 42 
 
 61.42 
 
 1.38 
 
 a Discharge of stream proper, 0.37 second-foot; small diversion immediately above station estimated 
 at 0.05; total discharge 0.42. 
 b Small loss through rocks at edge of measuring section. 
 
 1 950-foot elevation in Water-Supply Paper 318, p. 149. 
 
ISLAND OF OAHU. 
 
 101 
 
 Daily gage height, in feet, of Waiomao Stream at 900-foot elevation, near Honolulu, Oahu, 
 
 for 1912. 
 [Ramon Suvaco, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.30 
 
 
 
 0.12 
 .10 
 .10 
 .13 
 
 .18 
 
 .12 
 .11 
 .10 
 .14 
 .16 
 
 .24 
 .18 
 .17 
 .16 
 .23 
 
 .24 
 .17 
 .13 
 .12 
 .11 
 
 .12 
 .11 
 .10 
 
 .09 
 .09 
 
 .07 
 .07 
 .06 
 .06 
 .05 
 
 0.05 
 .05 
 .05 
 .05 
 .10 
 
 .10 
 .10 
 .09 
 .09 
 .09 
 
 .08 
 .09 
 .10 
 .13 
 .12 
 
 .12 
 .12 
 .12 
 .15 
 .10 
 
 .17 
 .14 
 .11 
 .32 
 .16 
 
 .25 
 .50 
 .35 
 .24 
 .19 
 .16 
 
 0.14 
 .14 
 .12 
 .25 
 
 .18 
 
 .14 
 .14 
 .13 
 .13 
 
 .12 
 .11 
 .12 
 .11 
 .10 
 
 .09 
 .09 
 .09 
 .09 
 .09 
 
 .09 
 .09 
 .09 
 .09 
 .09 
 
 0.08 
 .08 
 .08 
 .08 
 .12 
 
 .11 
 .10 
 .11 
 .32 
 
 .55 
 
 .35 
 .24 
 .22 
 .19 
 
 .18 
 
 .19 
 .18 
 .15 
 .14 
 .13 
 
 .12 
 .12 
 .11 
 .10 
 .10 
 
 .09 
 .08 
 .08 
 .07 
 .07 
 .07 
 
 0.07 
 .10 
 .22 
 .32 
 .20 
 
 .25 
 .14 
 .11 
 .23 
 .22 
 
 .50 
 .27 
 .19 
 .12 
 .12 
 
 .12 
 .11 
 .10 
 .09 
 
 .08 
 
 .23 
 .30 
 .19 
 .16 
 .23 
 .19 
 
 0.14 
 .13 
 .11 
 .10 
 .10 
 
 .10 
 .10 
 .09 
 .08 
 .08 
 
 .07 
 .07 
 .06 
 .08 
 .06 
 
 .06 
 .06 
 .06 
 .06 
 .06 
 
 .06 
 .06 
 .06 
 .06 
 .06 
 
 .07 
 .08 
 .09 
 .09 
 .10 
 
 0.09 
 .08 
 .08 
 .08 
 .07 
 
 .06 
 ""."itf" 
 
 ""io" 
 
 .09 
 .13 
 .10 
 .08 
 .26 
 
 .58 
 .33 
 .27 
 .19 
 .15 
 .14 
 
 0.11 
 .09 
 .07 
 .08 
 .07 
 
 .06 
 .06 
 .13 
 .18 
 .10 
 
 .08 
 .07 
 .06 
 .06 
 .30 
 
 .12 
 .10 
 .09 
 .09 
 .08 
 
 .27 
 .28 
 .37 
 .22 
 .19 
 
 .15 
 .14 
 .48 
 .50 
 
 .42 
 
 0.62 
 
 2 
 
 
 
 .49 
 
 3 
 
 
 
 0.14 
 .13 
 .12 
 
 .85 
 
 4 
 
 
 
 .45 
 
 5 
 
 
 
 .30 
 
 6 
 
 
 
 .25 
 
 7 
 
 
 
 
 .29 
 
 8 
 
 
 
 
 .30 
 
 9 
 
 .17 
 .17 
 
 .15 
 .14 
 .26 
 .35 
 
 0.10 
 .14 
 
 .16 
 .12 
 .15 
 .11 
 .10 
 
 .10 
 
 '.09 
 
 .09 
 
 .14 
 
 .90 
 
 .57 
 .34 
 
 ""76" 
 
 .88 
 .52 
 .68 
 .42 
 .28 
 
 .44 
 
 .26 
 .22 
 .19 
 
 .17 
 .14 
 .12 
 .11 
 .13 
 
 .11 
 
 .10 
 
 .11 
 .10 
 
 .26 
 
 10 
 
 .18 
 
 11 
 
 .14 
 
 12 . 
 
 .12 
 
 13 
 
 .18 
 
 14 
 
 .12 
 
 15 
 
 .12 
 
 16 
 
 
 .10 
 
 
 
 .09 
 
 18 
 
 
 .12 
 
 
 
 .40 
 
 20 
 
 
 .25 
 
 21 
 
 .12 
 
 .23 
 
 
 .24 
 
 23 
 
 
 .18 
 
 24 
 
 
 .15 
 
 25 
 
 
 .13 
 
 26 
 
 
 .12 
 
 
 
 
 .09 
 
 28 
 
 
 
 .09 
 
 
 
 
 .08 
 
 30 
 
 
 
 .09 
 
 
 
 
 .10 
 
 
 
 
 
 Discharge, in second-feet, of Waiomao Stream at 900-foot elevation, near Honolulu, Oahu. 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.64 
 
 
 
 0.50 
 .40 
 .40 
 .55 
 
 .85 
 
 .50 
 .45 
 .40 
 .60 
 .75 
 
 1.17 
 .76 
 .70 
 .64 
 
 1.10 
 
 1.17 
 
 .80 
 .55 
 .50 
 
 .45 
 
 .50 
 .45 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .55 
 .50 
 
 .50 
 .50 
 .50 
 .65 
 .66 
 
 1.29 
 
 1.02 
 
 .75 
 
 2.84 
 
 . 1.20 
 
 2.09 
 4.88 
 3.17 
 1.99 
 1.49 
 1.20 
 
 1.02 
 1.02 
 .84 
 2.09 
 1.39 
 
 1.02 
 1.02 
 .93 
 .93 
 .93 
 
 .93 
 .93 
 
 .84 
 .84 
 
 .84 
 
 .84 
 .75 
 .84 
 .75 
 .66 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 .58 
 .58 
 .58 
 .58 
 
 0.50 
 .50 
 .50 
 .50 
 
 .84 
 
 .75 
 .66 
 .75 
 
 2.84 
 5.48 
 
 3.17 
 
 1.99 
 1.79 
 1.49 
 1.39 
 
 1.49 
 1.39 
 1.11 
 1.02 
 .93 
 
 .84 
 .84 
 .75 
 .66 
 .66 
 
 .58 
 .50 
 .50 
 .43 
 .43 
 .43 
 
 0.43 
 
 .66 
 
 . 1.79 
 
 2.84 
 
 1.59 
 
 1.69 
 1.79 
 1.89 
 1.99 
 1.99 
 
 2.09 
 1.02 
 .75 
 1.89 
 1.79 
 
 4.88 
 2.29 
 1.49 
 
 .84 
 .84 
 
 .84 
 .75 
 .66 
 .58 
 .50 
 
 1.89 
 2.62 
 1.49 
 1.20 
 1.89 
 1.49 
 
 1.02 
 .93 
 .75 
 .66 
 .66 
 
 .66 
 .66 
 .58 
 .50 
 .50 
 
 .43 
 .43 
 .36 
 .36 
 .36 
 
 .36 
 .36 
 .36 
 .36 
 .36 
 
 .36 
 .36 
 .36 
 .36 
 .36 
 
 .43 
 .50 
 
 .58 
 .58 
 .66 
 
 0.58 
 .50 
 .50 
 .50 
 .43 
 
 .36 
 .50 
 .66 
 
 .84 
 1.02 
 
 1.20 
 1.39 
 1.49 
 1.39 
 .93 
 
 .50 
 .50 
 .50 
 .66 
 .66 
 
 .58 
 .93 
 .66 
 .50 
 2.19 
 
 5.84 
 2.93 
 2.29 
 1.47 
 1.09 
 .96 
 
 0.70 
 
 .54 
 .40 
 .45 
 .35 
 
 .35 
 .35 
 
 .77 
 
 1.23 
 
 .53 
 
 .40 
 .40 
 .40 
 .40 
 2.39 
 
 .64 
 .49 
 .41 
 .41 
 .40 
 
 1.99 
 2.09 
 3.07 
 1.39 
 1.11 
 
 .75 
 
 .67 
 
 4.16 
 
 4.40 
 
 3.47 
 
 5 50 
 
 2 
 
 
 
 4 28 
 
 3 
 
 
 
 0.52 
 
 .47 
 .42 
 
 8 20 
 
 4 
 
 
 
 3 72 
 
 5 
 
 
 
 2.14 
 
 6 
 
 
 
 1 57 
 
 7 
 
 
 
 
 1 98 
 
 8 
 
 
 
 
 -2.08 
 
 9 
 
 .70 
 
 .70 
 
 .58 
 
 .52 
 
 1.32 
 
 2.07 
 
 0.40 
 .40 
 
 .42 
 .42 
 .44 
 .44 
 .46 
 
 .46 
 .48 
 .48 
 .50 
 .50 
 
 .52 
 
 .76 
 
 8.53 
 
 4.30 
 
 1.98 
 
 ""6*62" 
 
 8.25 
 3.75 
 5.60 
 2.72 
 1.48 
 
 2.92 
 2.07 
 1.32 
 1.03 
 .90 
 
 .80 
 .60 
 .50 
 .45 
 .55 
 
 .45 
 .40 
 .40 
 .45 
 .45 
 .40 
 
 2.67 
 
 10 
 
 .89 
 
 11 
 
 .56 
 
 12 
 
 .41 
 
 13 
 
 .89 
 
 14 
 
 .41 
 
 15 
 
 .41 
 
 16 
 
 
 .35 
 
 17 
 
 
 .35 
 
 18 
 
 
 .41 
 
 19 
 
 
 3 10 
 
 20 
 
 
 1.51 
 
 21 
 
 .42 
 
 1.28 
 
 22 
 
 1.38 
 
 23 
 
 
 .82 
 
 24 
 
 
 .58 
 
 25 
 
 
 .43 
 
 26 
 
 
 .35 
 
 27 
 
 
 
 .35 
 
 28 
 
 
 
 .35 
 
 29 
 
 
 
 .35 
 
 30 
 
 
 
 .35 
 
 31 
 
 
 
 .35 
 
 
 
 
 
102 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of Waiomao Stream at 900-foot elevation near Honolulu, Oahu,for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 
 
 aO.99 
 
 6 1.26 
 
 cl.74 
 
 .58 
 
 1.00 
 
 .84 
 
 1.15 
 
 1.56 
 
 .51 
 
 1.11 
 
 1.17 
 
 1.52 
 
 a 15. 7 
 642.5 
 C86.2 
 34.5 
 61.5 
 50.0 
 70.7 
 95.9 
 30.3 
 68.2 
 69.6 
 93.5 
 
 D. 
 
 February 
 
 
 
 D. 
 
 March 
 
 
 
 D. 
 
 April 
 
 1.17 
 
 4.88 
 2.09 
 5.48 
 4.88 
 1.02 
 5,84 
 4.40 
 5.50 
 
 0.40 
 .40 
 .58 
 .43 
 .43 
 .36 
 .36 
 .35 
 .35 
 
 D. 
 
 May 
 
 D. 
 
 June 
 
 C. 
 
 July 
 
 B. 
 
 August 
 
 C. 
 
 
 C. 
 
 October 
 
 D. 
 
 November 
 
 D. 
 
 December 
 
 D. 
 
 
 
 The period . . . .' 
 
 
 
 d\.l2 
 
 d719 
 
 
 
 
 
 
 aEight days. 
 
 6 Seventeen days. 
 
 c Twenty-five days. 
 
 )hv " 
 
 d Three hundred twenty-five days. 
 WAIOMAO STREAM ABOVE PUKELE STREAM, NEAR HONOLULU, OAHU. 
 
 Location. — At Pukele highway bridge in Palolo Valley, about 6 miles east of Hono- 
 lulu. 
 
 Records available. — April 8 to December 29, 1911, and May 15 to December 31, 
 1912. 
 
 Drainage area. — Not measured. 
 
 Gage. — Vertical staff; read once daily, about 9 a.m.; datum unchanged. 
 
 Channel. — One channel at all stages; shifting. 
 
 Discharge measurements. — Low and medium stage measurements made by 
 wading; flood measurements made from bridge. 
 
 Diversions. — None above station. 
 
 Accuracy. — Records poor. 
 
 Discharge measurements of Waiomao Stream above Pukele Stream, near Honolulu, Oahu> 
 
 in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 May 15 
 
 21 
 
 June 17 
 
 Pierce and Hardy. . 
 
 W.V.Hardy 
 
 do 
 
 C.H.Pierce 
 
 G. K. Larrison 
 
 Feet. 
 0.74 
 .93 
 
 .82 
 .88 
 .82 
 
 Sec.-ft. 
 
 0.19 
 
 1.01 
 
 .27 
 
 .32 
 
 .10 
 
 Oct. 15 
 
 Nov. 26 
 
 Dec. 20 
 
 G. K. Larrison 
 
 Larrison, Dort and 
 Bailey 
 
 Feet. 
 0.95 
 
 1.03 
 1.13 
 
 Sec.-ft. 
 0.42 
 
 .81 
 
 July 28 
 Sept. 17 
 
 G. K. Larrison 
 
 1.37 
 
 Daily gage height, in feet, of Waiomao Stream above Pukele Stream, near Honolulu, 
 
 Oahu, for 1912. 
 
 Day. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.85 
 .83 
 .82 
 .81 
 .80 
 
 .84 
 .82 
 .81 
 .80 
 .81 
 
 0.87 
 .85 
 .88 
 .87 
 .86 
 
 .87 
 .89 
 .96 
 .96 
 1.20 
 
 0.98 
 .98 
 .96 
 .95 
 .94 
 
 '.93 
 .92 
 .92 
 .92 
 .91 
 
 0.85 
 .85 
 .85 
 .87 
 .81 
 
 .85 
 .86 
 .86 
 .90 
 .88 
 
 0.98 
 .90 
 .92 
 .90 
 .90 
 
 .91 
 .92 
 .99 
 .98 
 .98 
 
 0.98 
 .96 
 .91 
 .91 
 .91 
 
 .91 
 .91 
 .92 
 .92 
 1.00 
 
 1.52 
 
 2 
 
 
 1.35 
 
 3 
 
 
 1.23 
 
 4 
 
 
 1.18 
 
 5 
 
 
 1.16 
 
 6 
 
 
 1.13 
 
 7 
 
 
 1.11 
 
 8 
 
 
 1.09 
 
 9 
 
 
 1.09 
 
 10 
 
 
 1.09 
 
ISLAND OF OAHU. 
 
 103 
 
 Daily gage height, in feet, of Waiomao Stream above Pukele Stream, near Honolulu, 
 
 Oahu, for 1912 — Continued. 
 
 Day. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 11 
 
 
 0.83 
 
 .82 
 .80 
 .80 
 .81 
 
 .81 
 .80 
 .89 
 .81 
 .80 
 
 .79 
 .79 
 .79 
 
 .83 
 .86 
 
 .84 
 .86 
 .86 
 .84 
 .83 
 
 1.10 
 1.00 
 .96 
 .99 
 1.00 
 
 1.00 
 1.00 
 1.00 
 .99 
 .99 
 
 .99 
 .99 
 .98 
 .98 
 .98 
 
 .98 
 .97 
 .96 
 .95 
 .93 
 .90 
 
 0.98 
 .94 
 .92 
 .92 
 .91 
 
 .95 
 1.13 
 1.00 
 .95 
 .95 
 
 .95 
 .95 
 .93 
 
 .88 
 .82 
 
 .81 
 1.01 
 
 .93 
 
 .97 
 1.20 
 
 .91 
 
 0.86 
 .86 
 .83 
 .85 
 
 .87 
 
 .87 
 .86 
 .86 
 .86 
 .86 
 
 .87 
 .88 
 .87 
 .86 
 .82 
 
 .81 
 .85 
 .90 
 .92 
 1.02 
 
 1.03 
 1.00 
 1.04 
 1.02 
 .97 
 
 .90 
 .90 
 .90 
 .95 
 .98 
 
 .98 
 .96 
 .95 
 .95 
 1.12 
 
 1.06 
 1.06 
 1.08 
 1.06 
 1.04 
 1.00 
 
 0.98 
 .95 
 .93 
 .92 
 .98 
 
 2.13 
 
 1.05 
 
 .98 
 
 .95 
 
 .98 
 
 1.00 
 1.03 
 1.00 
 1.08 
 1.07 
 
 1.05 
 1.03 
 1.00 
 1.36 
 1.29 
 
 1.09 
 
 12 
 
 
 1.09 
 
 13 
 
 
 1.09 
 
 14 
 
 
 1.09 
 
 15 
 
 0.74 
 
 .71 
 .71 
 .70 
 .79 
 
 .82 
 
 .82 
 .83 
 
 .85 
 
 1.18 
 
 2.00 
 
 1.50 
 1.20 
 
 1.09 
 
 16 
 
 1.09 
 
 17 
 
 1.08 
 
 18 
 
 1.12 
 
 19 
 
 1.15 
 
 20 
 
 1.13 
 
 21 
 
 1.11 
 
 22 '. 
 
 1.00 
 
 23 
 
 1.09 
 
 
 1.08 
 
 25 
 
 1.07 
 
 26 
 
 1.06 
 
 
 1.05 
 
 28 
 
 1.05 
 
 
 1.05 
 
 30 
 
 1.05 
 
 
 1.05 
 
 
 
 Discharge, in second-feet, of Waiomao Stream above Pukele Stream, near Honolulu, Oahu, 
 
 for 1912. 
 
 Day. 
 
 May f 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.48 
 
 .37 
 
 - .31 
 
 .26 
 
 .20 
 
 .43 
 .31 
 .26 
 .20 
 .26 
 
 .37 
 .31 
 .20 
 .20 
 .26 
 
 .26 
 .18 
 .66 
 .21 
 .18 
 
 .13 
 .13 
 .13 
 .31 
 .45 
 
 .33 
 .45 
 .45 
 .33 
 .28 
 
 0.50 
 .38 
 .51 
 .45 
 .40 
 
 .45 
 
 .57 
 
 1.04 
 
 1.04 
 
 4.20 
 
 2.42 
 1.30 
 .96 
 1.20 
 1.30 
 
 1.30 
 1.30 
 1.30 
 1.12 
 1.12 
 
 1.12 
 1.12 
 1.05 
 1.05 
 1.05 
 
 1.05 
 .97 
 .90 
 .77 
 .63 
 .45 
 
 1.00 
 1.00 
 
 .84 
 .77 
 .70 
 
 .63 
 .57 
 .57 
 .57 
 
 .45 
 
 1.00 
 .70 
 .57 
 .57 
 .51 
 
 .77 
 2.60 
 1.16 
 
 .77 
 
 .77 
 
 .77 
 .77 
 .63 
 .35 
 .10 
 
 .09 
 1.24 
 
 .63 
 
 .92 
 3.70 
 
 .51 
 
 0.20 
 .20 
 .20 
 .30 
 .09 
 
 .20 
 .25 
 .25 
 .45 
 .35 
 
 .25 
 .25 
 .12 
 .20 
 .30 
 
 .30 
 .20 
 .20 
 .20 
 .20 
 
 .26 
 .30 
 .22 
 .18 
 .09 
 
 .08 
 .13 
 .37 
 .41 
 1.08 
 
 0.80 
 .31 
 .41 
 .31 
 
 .27 
 
 .30 
 .37 
 .79 
 .72 
 .72 
 
 1.02 
 .81 
 
 1.11 
 .95 
 .61 
 
 .13 
 .13 
 .13 
 .36 
 .53 
 
 .53 
 .42 
 .36 
 .36 
 1.67 
 
 1.10 
 1.10 
 1.28 
 1.10 
 .94 
 .67 
 
 0.53 
 .42 
 .17 
 .17 
 .17 
 
 .21 
 .21 
 .26 
 .26 
 .72 
 
 .59 
 .40 
 .30 
 .26 
 .59 
 
 28.00 
 1.10 
 .59 
 .40 
 .59 
 
 .72 
 .93 
 .72 
 1.36 
 1.28 
 
 1.10 
 
 .79 
 
 .58 
 
 5.30 
 
 3.90 
 
 8.90 
 
 2 
 
 
 5.00 
 
 3 
 
 
 2.90 
 
 4 
 
 
 2.21 
 
 5 
 
 
 1.88 
 
 6 
 
 
 1.56 
 
 7 
 
 
 1.39 
 
 8 
 
 
 1.21 
 
 9 
 
 
 1.21 
 
 10 
 
 
 1.21 
 
 11 
 
 
 1.21 
 
 12 
 
 
 1.21 
 
 13 
 
 
 1.11 
 
 14 
 
 
 1.11 
 
 15 
 
 0.19 
 
 .11 
 .11 
 .10 
 .33 
 
 .44 
 
 .37 
 .37 
 .48 
 1.62 
 3.81 
 
 4.34 
 
 4.52 
 
 24.90 
 
 24.40 
 
 11.90 
 
 4.70 
 
 1.11 
 
 16..... 
 
 1.11 
 
 17.... 
 
 1.06 
 
 18 
 
 1.30 
 
 19 
 
 1 70 
 
 20 
 
 1.50 
 
 21 
 
 1 21 
 
 22 
 
 41 
 
 23 
 
 1 04 
 
 24 
 
 .96 
 
 25 
 
 ,89 
 
 26 
 
 81 
 
 27 
 
 .74 
 
 28 ... 
 
 .74 
 
 29 
 
 74 
 
 30 
 
 .74 
 
 31 
 
 .74 
 
 
104 
 
 WATER RESOUBCES OF HAWAII, 1912. 
 
 Monthly discharge of Waiomao Stream above Puhele Stream, near Honolulu, Oahu, 
 
 for 1912. 
 
 Month. 
 
 Discharge in second 
 
 -feet. 
 
 Eun-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 May 15-31 
 
 24.9 
 .66 
 4.20 
 3.70 
 1.08 
 1.67 
 28. 
 8.90 
 
 0.10 
 .13 
 
 .38 
 .09 
 .08 
 .13 
 .17 
 .41 
 
 5.16 
 .30 
 
 1.07 
 .85 
 .26 
 .66 
 
 1.75 
 
 1.58 
 
 164.0 
 17.8 
 65.8 
 52.3 
 15.5 
 40.6 
 
 104.0 
 97.2 
 
 D. 
 
 June 
 
 D. 
 
 July 
 
 D. 
 
 
 C. 
 
 September 
 
 D. 
 
 October 
 
 D. 
 
 
 D. 
 
 December 
 
 D. 
 
 
 
 The period 
 
 28.0 
 
 .08 
 
 1.22 
 
 557.0 
 
 
 
 
 PUKELE STREAM AT MAHOE SPRINGS, NEAR HONOLULU, OAHTT. 
 
 Location. — About 500 feet above Pukele in upper Palolo Valley and about 6$ miles 
 northeast of Honolulu. 
 
 Records available. — April 16 to December 31, 1912. 
 
 Gage. — Staff; read once daily, about 10 a. m. 
 
 Channel. — One channel at all stages; shifting. 
 
 Discharge measurements. — Made by wading. 
 
 Diversions. — None above station; two small irrigation ditches divert water imme- 
 diately below the station. 
 
 Accuracy. — Records poor. 
 
 Discharge measurements of Puhele Stream at Mahoe Springs, near Honolulu, Oahu, in 
 
 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Apr. 16 
 
 May 15 
 
 15 
 
 C. H. Pierce ,-- 
 
 Feet. 
 0.73 
 .62 
 .62 
 .61 
 .60 
 .59 
 
 Sec.-ft. 
 1.14 
 .55 
 .45 
 .40 
 .40 
 .44 
 
 July 29 
 Sept. 19 
 Oct. 15 
 Nov. 26 
 
 Dec. 24 
 
 C. H. Pierce 
 
 G. K. Larrison 
 
 do 
 
 Larrison, Dort and 
 Bailey 
 
 Feet. 
 0.56 
 .57 
 .64 
 
 .79 
 
 .78 
 
 Sec.-ft. 
 0.37 
 
 do 
 
 W. V.Hardy... 
 
 
 . .31 
 .36 
 
 21 
 
 do 
 
 
 
 21 
 
 do 
 
 do 
 
 
 .87 
 
 June 17 
 
 G. K. Larrison 
 
 .92 
 
 Daily gage height, in feet, of Puhele Stream at Mahoe Springs, near Honolulu, Oahu, for 
 
 1912. 
 
 
 
 [Sam Zepano, observer.J 
 
 
 
 
 
 Day. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.68 
 .68 
 .67 
 .66 
 .66 
 
 .66 
 .65 
 .65 
 .65 
 .64 
 
 .64 
 .64 
 .64 
 .63 
 .62 
 
 .62 
 .61 
 .61 
 .60 
 .61 
 
 0.76 
 
 .75 
 .74 
 .73 
 .75 
 
 .73 
 .70 
 .68 
 .65 
 .64 
 
 .63 
 .62 
 .61 
 .60 
 .60 
 
 .59 
 .59 
 .59 
 .58 
 .57 
 
 0.56 
 .56 
 .56 
 .56 
 .56 
 
 .56 
 .56 
 .57 
 .57 
 .95 
 
 .69 
 .67 
 .63 
 .62 
 .60 
 
 .60 
 .59 
 .60 
 .60 
 .60 
 
 0.58 
 .58 
 .58 
 .60 
 .59 
 
 .62 
 .62 
 .61 
 .61 
 .60 
 
 .60 
 .59 
 .59 
 .86 
 .73 
 
 '.68 
 .57 
 .59 
 .61 
 .60 
 
 0.45 
 .45 
 .45 
 .47 
 .47 
 
 .48 
 .63 
 .63 
 .62 
 .61 
 
 .60 
 .59 
 .58 
 .53 
 .50 
 
 .48 
 .60 
 .60 
 .60 
 .63 
 
 0.52 
 .50 
 
 .58 
 .57 
 .57 
 
 .59 
 .59 
 .60 
 .60 
 .60 
 
 .80 
 
 ***"."66" 
 .66 
 .66 
 
 .60 
 .60 
 .59 
 .58 
 .65 
 
 0.70 
 .70 
 .71 
 .71 
 .71 
 
 .71 
 
 .71 
 .72 
 .72 
 .71 
 
 .70 
 
 !69 
 .75 
 
 .83 
 .79 
 .75 
 .70 
 
 .78 
 
 1.28 
 
 2 
 
 
 1.12 
 
 3 
 
 
 1.03 
 
 4 
 
 
 1.03 
 
 5 
 
 
 1.02 
 
 6 
 
 
 1.00 
 
 7 
 
 
 .98 
 
 8 
 
 
 .90 
 
 9 
 
 
 .90 
 
 10 
 
 
 .90 
 
 11 
 
 
 .90 
 
 12 
 
 
 .90 
 
 13 
 
 
 .89 
 
 14 
 
 
 .89 
 
 15 
 
 
 .89 
 
 16 
 
 0.73 
 .73 
 .74 
 .73 
 .73 
 
 .88 
 
 17 
 
 .88 
 
 18 
 
 .87 
 
 19 
 
 .83 
 
 20 
 
 .80 
 
ISLAND OF OAHTJ. 
 
 105 
 
 Daily gage height, in feet, of Pukele Stream at Mahoe Springs, near Honolulu, Oahu,for 
 
 1912— Continued. 
 
 Day. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 0.73 
 .73 
 .73 
 .73 
 .73 
 
 .72 
 .71 
 .70 
 .69 
 .68 
 
 0.69 
 .69 
 
 !70 
 
 .85 
 
 .89 
 1.11 
 1.15 
 1.13 
 1.00 
 
 .98 
 
 0.57 
 
 .57 
 .57 
 .57 
 .57 
 
 .56 
 .56 
 .56 
 
 .56 
 .56 
 
 0.60 
 .60 
 .60 
 .60 
 .60 
 
 .59 
 .58 
 .57 
 .60 
 .60 
 .60 
 
 0.61 
 .60 
 .68 
 .62 
 .61 
 
 .60 
 
 .78 
 .68 
 .57 
 .50 
 .49 
 
 0.65 
 .68 
 .66 
 .65 
 .68 
 
 .70 
 *"*.*65" 
 
 0.65 
 .66 
 .68 
 .67 
 .80 
 
 .78 
 .80 
 .79 
 .75 
 .73 
 .70 
 
 0.82 
 
 1.01 
 
 .95 
 
 .88 
 .83 
 
 .80 
 .80 
 .83 
 
 .89 
 1.00 
 
 0.79 
 
 22 
 
 .79 
 
 23 
 
 .78 
 
 24 
 
 .77 
 
 25 
 
 .76 
 
 26 
 
 .75 
 
 27 
 
 .74 
 
 28 
 
 .74 
 
 29... 
 
 .74 
 
 30 
 
 .75 
 
 31 
 
 .75 
 
 
 
 
 Daily discharge, in second-feet, of Pukele Stream at Mahoe Springs, near Honolulu, Oahu, 
 
 for 1912. 
 
 Day. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.8 
 .8 
 .7 
 .6 
 .6 
 
 .6 
 .6 
 .6 
 .6 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 .8 
 .8 
 .8 
 .9 
 2.6 
 
 3.2 
 6.5 
 7.1 
 7.3 
 5.4 
 5.0 
 
 1.8 
 1.7 
 1.6 
 1.4 
 1.7 
 
 1.4 
 1.1 
 1.0 
 
 .7 
 .7 
 
 .6 
 .6 
 .5 
 .5 
 .5 
 
 ' .4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 0.4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 4.6 
 
 1.0 
 .9 
 .6 
 .6 
 .5 
 
 .5 
 .4 
 .5 
 .5 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 .5 
 
 .4 
 
 .4 
 .4 
 .5 
 .5 
 .5 
 
 0.4 
 .4 
 .4 
 .5 
 .4 
 
 .6 
 .6 
 .5 
 .5 
 .5 
 
 .5 
 
 .4 
 
 .4 
 
 3.1 
 
 1.4 
 
 1.0 
 .4 
 .4 
 .5 
 .4 
 
 .5 
 .4 
 .9 
 .5 
 .5 
 
 .4 
 1.8 
 .8 
 .4 
 .3 
 .3 
 
 0.3 
 .3 
 .3 
 .3 
 .3 
 
 .3 
 .5 
 .5 
 .5 
 
 .4 
 
 .4 
 .4 
 .3 
 .3 
 .3 
 
 .3 
 
 .4 
 .4 
 .4 
 .5 
 
 .6 
 
 .7 
 .6 
 .5 
 
 .7 
 
 .8 
 .7 
 .6 
 .6 
 .5 
 
 0.3 
 .3 
 .3 
 .3 
 .3 
 
 .3 
 .3 
 .3 
 .3 
 .3 
 
 .4 
 .8 
 .4 
 .4 
 .4 
 
 .3 
 .3 
 .3 
 .3 
 
 .4 
 
 .4 
 .4 
 .5 
 .4 
 1.2 
 
 1.0 
 1.2 
 1.1 
 
 .8 
 .7 
 .5 
 
 0.5 
 .5 
 .6 
 .6 
 .5 
 
 .5 
 .5 
 .6 
 .6 
 .6 
 
 .5 
 
 .4 
 .4 
 .4 
 .7 
 
 1.3 
 .9 
 
 .7 
 .4 
 .9 
 
 1.0 
 3.5 
 
 2.7 
 2.0 
 1.1 
 
 1.0 
 1.0 
 1.3 
 2.0 
 3.7 
 
 8.0 
 
 2 
 
 
 5.6 
 
 3 
 
 
 4.2 
 
 4 
 
 
 4.2 
 
 5 
 
 
 3.8 
 
 6 
 
 
 3.8 
 
 7 
 
 
 3.4 
 
 8 
 
 
 2.2 
 
 9 
 
 
 2.2 
 
 10 
 
 
 2.2 
 
 11 
 
 
 2.2 
 
 12 
 
 
 2.2 
 
 13 
 
 
 2.1 
 
 14 
 
 
 2.1 
 
 15 
 
 
 2.1 
 
 16 
 
 1.2 
 1.2 
 1.2 
 1.2 
 1.2 
 
 1.2 
 1.2 
 
 1.2 
 1.2 
 1.2 
 
 1.1 
 
 1.0 
 
 .9 
 
 .8 
 .8 
 
 1.9 
 
 17 
 
 1.9 
 
 18 
 
 1.8 
 
 19 
 
 1.4 
 
 20 
 
 1.1 
 
 21 
 
 1.0 
 
 22 
 
 1.0 
 
 23 
 
 .9 
 
 24 
 
 .8 
 
 25 
 
 .8 
 
 26 
 
 .7 
 
 27 
 
 .6 
 
 28... 
 
 6 
 
 29 
 
 6 
 
 30 
 
 7 
 
 31 
 
 7 
 
 
 
 
 Monthly discharge of Pukele Stream at Mahoe Springs, near Honolulu, Oahu, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 Minimum. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 April 16-30...... 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 mber 
 
 The period 
 
 1.2 
 7.3 
 1.8 
 4.6 
 3.1 
 .8 
 1.2 
 3.7 
 8.0 
 
 0.8 
 .4 
 .4 
 .4 
 .3 
 .3 
 .3 
 .4 
 
 1.11 
 
 1.65 
 
 .73 
 
 .63 
 
 .65 
 
 1.05 
 2.16 
 
 8.0 
 
 66.0 
 101.0 
 43.4 
 38.7 
 40.0 
 27.4 
 30.1 
 62.5 
 133.0 
 
 542.0 
 
106 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 MANOA STREAM BASIN. 
 MANOA STREAM AT UPPER END OF VALLEY NEAR HONOLULU, OAHU. 
 
 Location. — Below confluence of two main branches in upper Manoa Valley, about 5 
 
 miles east of Honolulu. 
 Records available. — November 7, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, about 6 a. m. and 5 p. m. 
 Channel. — One channel at all stages; shifting. 
 Discharge measurements. — By wading at low and medium stages up to a gage 
 
 height about 4 feet; above this stage from footbridge at gage. 
 Diversions. — Several small irrigation ditches divert from the branches of the stream 
 
 above the station. 
 Accuracy. — Records poor. 
 
 Discharge measurements of Manoa Stream at upper end of valley, near Honolulu, Oahu, 
 
 in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 1912. 
 Jan. 12 
 
 H. R. Schulz 
 
 Feet. 
 2.73 
 2.87 
 3.24 
 3.32 
 
 Sec.-ft. 
 1.95 
 
 Sept. 17 
 Oct. 30 
 
 G. K. Larrison 
 
 1.43 
 
 Larrison and Dort 
 
 5.19 
 
 Dec. 20 
 
 G. K. Larrison 
 
 7.89 
 
 
 
 
 Daily gage height, in feet, of Manoa Stream at upper end of valley, near Honolulu, Oahu, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Not. 
 
 2.70 
 
 2.52 
 
 2.72 
 
 2.68 
 
 2.70 
 
 2.70 
 
 2.70 
 
 2.65 
 
 2.60 
 
 2.80 
 
 3.10 
 
 2.70 
 
 2.52 
 
 2.75 
 
 2.68 
 
 2.70 
 
 2.70 
 
 2.70 
 
 2.75 
 
 2.60 
 
 2.80 
 
 3.00 
 
 2.70 
 
 2.55 
 
 2.65 
 
 2.65 
 
 2.70 
 
 2.70 
 
 2.70 
 
 2.75 
 
 2.60 
 
 2.85 
 
 3.00 
 
 2.65 
 
 2.55 
 
 2.60 
 
 2.70 
 
 2.70 
 
 2.75 
 
 2.70 
 
 2.75 
 
 2.70 
 
 2.82 
 
 3.05 
 
 2.65 
 
 2.55 
 
 2.60 
 
 2.75 
 
 2.75 
 
 2.70 
 
 2.70 
 
 2.80 
 
 2.80 
 
 2.80 
 
 3.05 
 
 2.68 
 
 2.55 
 
 2.60 
 
 2.80 
 
 2.65 
 
 2.68 
 
 2.70 
 
 2.80 
 
 2.80 
 
 2.80 
 
 3.00 
 
 2.70 
 
 2.58 
 
 2.60 
 
 2.95 
 
 2.60 
 
 2.65 
 
 2.70 
 
 2.80 
 
 2.85 
 
 2.62 
 
 3.05 
 
 2.85 
 
 2.60 
 
 2. 70 
 
 3.00 
 
 2.60 
 
 2.70 
 
 2.70 
 
 2.80 
 
 2.80 
 
 2.60 
 
 3.10 
 
 2.70 
 
 2.55 
 
 3.10 
 
 3.05 
 
 2.60 
 
 2.66 
 
 3.15 
 
 2.80 
 
 2.80 
 
 2.95 
 
 3.35 
 
 2.70 
 
 2.62 
 
 3.30 
 
 2.90 
 
 2.60 
 
 2.65 
 
 3.30 
 
 2.60 
 
 2.80 
 
 2.82 
 
 3.00 
 
 2.70 
 
 2.55 
 
 3.90 
 
 2.80 
 
 2.60 
 
 2.65 
 
 3.00 
 
 3.15 
 
 2.80 
 
 2.95 
 
 3.00 
 
 2.60 
 
 2.55 
 
 3.45 
 
 2.75 
 
 2.60 
 
 2.65 
 
 2.80 
 
 2.60 
 
 2.80 
 
 3.15 
 
 3.00 
 
 2.60 
 
 2.55 
 
 3.50 
 
 2.90 
 
 2.60 
 
 2.68 
 
 2.80 
 
 2.80 
 
 2.80 
 
 3.05 
 
 3.00 
 
 2.70 
 
 2.55 
 
 3.15 
 
 2.80 
 
 2.65 
 
 2.68 
 
 3.85 
 
 2.80 
 
 2.80 
 
 3.10 
 
 2.98 
 
 2.65 
 
 2.55 
 
 3.00 
 
 2.90 
 
 2.60 
 
 2.68 
 
 2.70 
 
 2.70 
 
 2.80 
 
 3.00 
 
 3.08 
 
 2.60 
 
 2.55 
 
 2.95 
 
 3.40 
 
 2.60 
 
 2.65 
 
 2.70 
 
 3.55 
 
 2.80 
 
 2.80 
 
 3.05 
 
 2.60 
 
 2.55 
 
 2.90 
 
 3.15 
 
 2.60 
 
 2.68 
 
 2.75 
 
 2.70 
 
 2.85 
 
 2.60 
 
 2.98 
 
 2.60 
 
 2.55 
 
 2.85 
 
 3.02 
 
 2.60 
 
 2.70 
 
 2.70 
 
 2.80 
 
 2.80 
 
 2.60 
 
 3.00 
 
 2.60 
 
 2.55 
 
 2.80 
 
 2.90 
 
 2.60 
 
 2.70 
 
 2.70 
 
 2.80 
 
 2.80 
 
 2.60 
 
 3.00 
 
 2.60 
 
 2.55 
 
 2.80 
 
 2.85 
 
 2.60 
 
 2.65 
 
 2.70 
 
 2.80 
 
 2.80 
 
 2.80 
 
 3.00 
 
 2.60 
 
 2.70 
 
 2.80 
 
 2.80 
 
 2.65 
 
 2.65 
 
 2.70 
 
 2.80 
 
 2.80 
 
 2.60 
 
 3.90 
 
 2.60 
 
 2.60 
 
 2.80 
 
 2.80 
 
 2.60 
 
 2.65 
 
 2.70 
 
 2.80 
 
 2.80 
 
 3.20 
 
 3.45 
 
 2.60 
 
 3.60 
 
 2.80 
 
 2.80 
 
 2.60 
 
 2.65 
 
 2.70 
 
 2.80 
 
 2.80 
 
 3.00 
 
 3.25 
 
 2.60 
 
 3.10 
 
 2.70 
 
 2.78 
 
 3.00 
 
 2.65 
 
 2.70 
 
 2.80 
 
 2.80 
 
 3.00 
 
 3.20 
 
 2.60 
 
 3.00 
 
 2.80 
 
 2.75 
 
 2.75 
 
 2.65 
 
 2.70 
 
 2.80 
 
 2.80 
 
 3.10 
 
 3.15 
 
 2.55 
 
 2.85 
 
 2.70 
 
 2.72 
 
 2.95 
 
 2.65 
 
 2.65 
 
 3.25 
 
 2.80 
 
 3.80 
 
 3.00 
 
 2.54 
 
 2.80 
 
 2.70 
 
 2.70 
 
 3.40 
 
 2.65 
 
 2.65 
 
 3.20 
 
 2.80 
 
 3.50 
 
 3.00 
 
 2.55 
 
 2.70 
 
 2.70 
 
 2.70 
 
 3.10 
 
 2.72 
 
 2.65 
 
 3.00 
 
 2.80 
 
 3.40 
 
 3.20 
 
 2.52 
 
 2.70 
 
 2.70 
 
 2.70 
 
 2.80 
 
 2.72 
 
 2.70 
 
 2.60 
 
 2.80 
 
 3.10 
 
 3.45 
 
 2.50 
 
 
 2.70 
 
 2.70 
 
 2.80 
 
 2.70 
 
 2.70 
 
 3.20 
 
 2.80 
 
 3.10 
 
 3.10 
 
 2.52 
 
 
 2.70 
 
 
 2.75 
 
 
 2.70 
 
 3.00 
 
 
 3.15 
 
 
 Dec. 
 
 1 
 
 2 
 3. 
 
 4, 
 5 
 
 6 
 
 7, 
 8. 
 9 
 10. 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 
 3.80 
 4.65 
 3.45 
 3.35 
 
 3.25 
 3.30 
 3.30 
 3.30 
 3.25 
 
 3.20 
 3.10 
 3.10 
 3.10 
 3.10 
 
 3.10 
 3.50 
 3.50 
 3.45 
 3.30 
 
 3.35 
 3.30 
 3.30 
 3.30 
 3.10 
 
 3.05 
 3.00 
 3.00 
 3.00 
 3.00 
 3.00 
 
ISLAND OF OAHU. 
 
 107 
 
 Daily discharge, in second-feet, of Manoa Stream at upper end of valley, near Honolulu , 
 
 Oahu, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.8 
 1.8 
 1.8 
 1.5 
 1.5 
 
 1.7 
 1.8 
 3.0 
 1.8 
 1.8 
 
 1.8 
 1.2 
 1.2 
 1.8 
 1.5 
 
 1.2 
 1.2 
 1.2 
 1.2 
 1.2 
 
 1.2 
 1.2 
 1.2 
 1.2 
 1.2 
 
 1.0 
 
 .9 
 
 1.0 
 
 .8 
 .7 
 .8 
 
 0.6 
 .6 
 
 .8 
 .8 
 .8 
 
 .8 
 .9 
 
 1.0 
 .8 
 
 1.1 
 
 .8 
 .8 
 .8 
 .8 
 .8 
 
 .8 
 .8 
 .8 
 .8 
 .8 
 
 1.5 
 1.0 
 13.2 
 5.2 
 4.0 
 
 2.6 
 2.2 
 1.5 
 1.5 
 
 1.5 
 1.7 
 1.2 
 
 .8 
 .8 
 
 .8 
 
 .8 
 
 1.4 
 
 4.2 
 
 6.7 
 
 19.0 
 10.0 
 11.0 
 4.8 
 3.8 
 
 3.3 
 2.8 
 2.4 
 2.1 
 2.1 
 
 2.1 
 2.1 
 2.1 
 1.4 
 2.1 
 
 1.4 
 1.4 
 1.4 
 1.4 
 1.4 
 1.4 
 
 1.2 
 1.2 
 1.0 
 1.3 
 
 1.6 
 
 1.8 
 3.1 
 3.5 
 4.0 
 2.6 
 
 1.8 
 1.6 
 2.6 
 1.8 
 2.6 
 
 8.9 
 5.3 
 3.7 
 2.6 
 2.2 
 
 1.8 
 1.8 
 1.8 
 1.7 
 1.6 
 
 1.4 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.2 
 1.2 
 1.2 
 1.2 
 1.4 
 
 .9 
 
 .7 
 .7 
 .7 
 .7 
 
 .7 
 .7 
 .7 
 .9 
 .7 
 
 .7 
 .7 
 .7 
 .7 
 .7 
 
 .9 
 
 .7 
 
 .7 
 
 3.3 
 
 1.4 
 
 2.8 
 8.5 
 4.3 
 1.7 
 1.7 
 1.4 
 
 1.0 
 1.0 
 1.0 
 1.3 
 1.0 
 
 .9 
 .8 
 1.0 
 .8 
 .8 
 
 .8 
 .8 
 .9 
 .9 
 .9 
 
 .8 
 
 .9 
 
 1.0 
 
 1.0 
 .8 
 
 .8 
 .8 
 .8 
 .8 
 .8 
 
 .8 
 
 .8 
 
 1.1 
 
 1.1 
 
 1.0 
 
 0.9 
 .9 
 .9 
 .9 
 .9 
 
 .9 
 
 .9 
 
 .9 
 
 4.8 
 
 6.3 
 
 2.9 
 1.4 
 1.4 
 
 16.0 
 .9 
 
 .9 
 1.2 
 
 .9 
 .9 
 .9 
 
 .9 
 .9 
 • 9 
 .9 
 .9 
 
 .7 
 .7 
 .7 
 .9 
 .9 
 .9 
 
 0.7 
 1.1 
 1.1 
 1.1 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 .5 
 
 4.2 
 
 .5 
 
 1.3 
 
 1.3 
 
 .8 
 
 10.0 
 
 .8 
 
 1.3 
 
 1.3 
 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 5.5 
 4.8 
 2.7 
 .5 
 4.8 
 2.7 
 
 0.4 
 .4 
 .4 
 .7 
 
 1.1 
 
 1.1 
 1.4 
 1.1 
 1.1 
 1.1 
 
 1.1 
 1.1 
 1.1 
 1.1 
 1.1 
 
 1.1 
 1.4 
 1.1 
 1.1 
 1.1 
 
 1.1 
 1.1 
 1.1 
 1.1 
 1.1 
 
 1.1 
 1.1 
 1.1 
 1.1 
 1.1 
 
 1.1 
 1.1 
 1.4 
 1.2 
 1.1 
 
 1.1 
 
 .5 
 
 .4 
 
 2.1 
 
 1.2 
 
 2.1 
 4.0 
 3.0 
 3.5 
 2.5 
 
 1.1 
 .4 
 .4 
 .4 
 
 1.1 
 
 .4 
 4.5 
 2.5 
 2.5 
 3.5 
 
 14.5 
 9.0 
 7.5 
 3.5 
 3.5 
 3.0 
 
 3.5 
 2.5 
 2.5 
 3.0 
 3.0 
 
 2.5 
 3.0 
 3.5 
 6.8 
 2.5 
 
 2.5 
 2.5 
 2.5 
 2.3 
 3.3 
 
 3.0 
 2.3 
 2.5 
 2.5 
 2.5 
 
 16.5 
 8.2 
 5.2 
 4.5 
 4.0 
 
 2.5 
 2.5 
 4.5 
 8.2 
 3.5 
 
 14.5 
 
 2 
 
 14.5 
 
 3 
 
 35.0 
 
 4 
 
 10.0 
 
 5 
 
 8.2 
 
 6 
 
 6.8 
 
 7 
 
 7.5 
 
 8 
 
 7.5 
 
 9 
 
 7.5 
 
 10 
 
 6.8 
 
 11 
 
 6.2 
 
 12 
 
 4.9 
 
 13 
 
 4.9 
 
 14 
 
 4.9 
 
 
 4.9 
 
 16 
 
 4.9 
 
 17 
 
 11.0 
 
 18 
 
 11.0 
 
 19 
 
 10.0 
 
 20 
 
 7.5 
 
 21 
 
 8.2 
 
 22 
 
 7.5 
 
 23 
 
 7.5 
 
 24 
 
 7.5 
 
 25 
 
 4.9 
 
 26 
 
 4.3 
 
 27 
 
 3.7 
 
 28 
 
 3.7 
 
 29 
 
 3.7 
 
 30 
 
 3.7 
 
 31 
 
 3.7 
 
 
 
 Note. — Daily discharge, Feb. 1 to Aug. 31, computed by indirect methods for shifting channels. 
 Monthly discharge of Manoa Stream at upper end of valley, near Honolulu, Oahu, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean, 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January , 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 3.0 
 
 13.2 
 
 19.0 
 
 8.9 
 
 8.5 
 
 1.3 
 
 16.0 
 
 10.0 
 
 1.4 
 
 14.5 
 
 16.5 
 
 35.0 
 
 0.7 
 .6 
 .8 
 
 1.0 
 .7 
 .8 
 .7 
 .5 
 .4 
 .4 
 
 2.3 
 
 3.7 
 
 1.39 
 1.68 
 3.21 
 2.32 
 1.44 
 .91 
 1.77 
 1.98 
 1.04 
 2.71 
 3.94 
 7.96 
 
 35.0 
 
 .4 
 
 2.54 
 
 85.6 
 
 97.0 
 
 197.0 
 
 138.0 
 
 88.3 
 
 54.0 
 
 109.0 
 
 122.0 
 
 61.7 
 
 167.0 
 
 235.0 
 
 490.0 
 
 1,840 
 
108 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 MANOA STREAM AT COLLEGE OF HAWAII, NEAR HONOLULU. 
 
 Location. — In ravine about half a mile southeast of College of Hawaii, and 3 miles 
 
 east of Honolulu. 
 Records available.— March 23, 1909, to November 24, 1910; November 1, 1912, to 
 
 December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 6.30 a. m. and 5. p. m.; weir destroyed by 
 
 flood November 24, 1910; several changes in datum previous to 1912. 
 Channel. — One channel for all stages; practically permanent. 
 Discharge measurements. — By wading. 
 Diversions. — One small irrigation ditch (maximum capacity about 1.5 second-feet), 
 
 diverts water at a few hundred feet above the gage. 
 Accuracy.-^Record good. 
 Cooperation. — Maintained in cooperation with the College of Hawaii. 
 
 Discharge measurements of Manoa Stream at College of Hawaii, near Honolulu, Oahu t 
 
 in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Width. 
 
 Area of 
 section. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Nov. 23 
 
 A. R. Keller 
 
 Feet. 
 18.0 
 12.1 
 12.6 
 
 Sq.-ft. 
 30.2 
 7.82 
 12.9 
 
 Feet. 
 2.28 
 1.07 
 1.41 
 
 Sec.-ft. 
 43.8 
 
 Dec. 13 
 20 
 
 do 
 
 G. K. Larrison 
 
 2.19 
 7.23 
 
 
 
 
 Note.— A ditch diverts water a few hundred feet above station. Discharge of ditch at time measure- 
 ment was made=0.74; this gives total run-off for stream (7.23+0.74) 7.97 second-feet. 
 
 Daily gage height, in feet, of Manoa Stream at College of Hawaii, near Honolulu, Odhu, 
 
 for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.06 
 1.00 
 1.10 
 .91 
 1.19 
 
 1.00 
 1.40 
 1.10 
 2.15 
 1.18 
 
 2.30 
 2.35 
 3.75 
 2.15 
 1.98 
 
 1.88 
 1.80 
 1.60 
 1.40 
 1.40 
 
 11 
 
 1.25 
 1.30 
 1.00 
 .92 
 1.35 
 
 1.05 
 1.00 
 1.02 
 1,03 
 1.00 
 
 1.20 
 1.00 
 1.15 
 1.15 
 1.00 
 
 .98 
 .95 
 .98 
 2.20 
 1.38 
 
 21 
 
 2.25 
 2.30 
 2.35 
 1.85 
 1.60 
 
 1.40 
 
 1.40 
 2.75 
 2.25 
 1.70 
 
 1.90 
 
 2 
 
 12 
 
 22 
 
 3.25 
 
 3 
 
 13 
 
 23.. 
 
 2.25 
 
 4 
 
 14 
 
 24 
 
 3.65 
 
 5 
 
 15 
 
 25 
 
 1.90 
 
 6 
 
 16 
 
 26 
 
 2.50 
 
 7 
 
 17 
 
 27 
 
 2.15 
 
 8 
 
 18 
 
 28 
 
 1.90 
 
 9 
 
 19 
 
 29 
 
 1.40 
 
 10 
 
 20 
 
 30 
 
 1.40 
 
 
 
 31 
 
 1.40 
 
 
 
 
 
 MANOA STREAM AT WAIALAE ROAD, NEAR HONOLULU, OAHTT. 
 
 Location. — At Waialae road bridge, Honolulu, Oahu. 
 
 Records available. — November 5, 1910, to February 6, 1911, and June 15 to Septem- 
 ber 30, 1912, when station was discontinued. 
 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p.m.; new datum established 
 June 15, 1912. 
 
 Channel. — One at all stages; practically permanent. 
 
 Discharge measurements. — At low water made by wading; at flood stages from 
 bridge. 
 
 Diversions. — All low-water discharge diverted above station. 
 
 Accuracy. — No discharge rating obtained for new datum. 
 
 The following discharge measurement was made by G. K. Larrison: 
 September 18, 1912: Gage height, 3.18 feet; discharge, 0. 
 
ISLAND OF OAHTJ. 
 
 109 
 
 Daily gage height, in feet, of Manoa Stream at Waialae road, near Honolulu, Oahu, for 
 
 1912. 
 
 Day. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Day. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 1 
 
 
 3.45 
 
 3.50 
 3.50 
 3.45 
 3.50 
 
 4.20 
 5.30 
 5.90 
 5.80 
 4.25 
 
 4.25 
 4.20 
 4.60 
 4.90 
 4.30 
 
 3.40 
 3.40 
 3.40 
 3.45 
 3.50 
 
 3.60 
 3.60 
 3.55 
 3.40 
 3.40 
 
 3.40 
 3.95 
 3.90 
 3.90 
 4.40 
 
 4.40 
 4.30 
 4.10 
 3.70 
 3.70 
 
 3.80 
 3.80 
 3.60 
 3.55 
 3.50 
 
 3.40 
 3.40 
 3.40 
 3.40 
 3.30 
 
 16 
 
 3.50 
 3.40 
 3.40 
 3.40 
 3.40 
 
 3.40 
 3.45 
 3.50 
 3.55 
 3.60 
 
 3.55 
 3.55 
 3.45 
 3.45 
 3.45 
 
 3.90 
 3.70 
 3.65 
 4.10 
 3.90 
 
 3.90 
 4.05 
 4.00 
 3.45 
 3.40 
 
 3.40 
 3.40 
 3.40 
 3.95 
 3.40 
 3.40 
 
 4.50 
 4.20 
 4.45 
 4.90 
 3.90 
 
 3.60 
 3.40 
 3.40 
 3.40 
 4.45 
 
 4.80 
 4.00 
 3.70 
 3.50 
 4.30 
 4.15 
 
 3.20 
 
 2 
 
 
 17 
 
 3.25 
 
 3 
 
 
 18 
 
 3.20 
 
 4 . 
 
 
 19 
 
 3.15 
 
 5 
 
 
 20 
 
 3.10 
 
 6 
 
 
 21 
 
 3.10 
 
 7 
 
 
 22 
 
 3.30 
 
 8 
 
 
 23 
 
 3.40 
 
 9 
 
 
 24 
 
 3.35 
 
 10... . 
 
 
 25 
 
 3.20 
 
 11 . 
 
 
 26... 
 
 3.20 
 
 12 . 
 
 
 27 
 
 3.30 
 
 13 . . 
 
 
 28 
 
 3.60 
 
 14 
 
 
 29 
 
 3.30 
 
 
 3.40 
 
 30 
 
 3.10 
 
 
 31 
 
 
 
 
 
 
 Note. — Station was abandoned, as records had little value; a better location was found at the College 
 of Hawaii, about half a mile upstream, and a station was reestablished at that place. (See p. 108.) 
 
 PAUOA STREAM BELOW KAHUAWAI SPRING, NEAR HONOLULU, OAHXT. 
 
 Location. — Upper Pauoa Valley about 1 mile above Punchbowl and about 2.5 miles 
 northeast of Honolulu. 
 
 Records available. — April 14, 1911, to December 31, 1912. 
 
 Gage. — October 17, 1911, to December 31, 1912, Watson weekly clock register; April 
 14 to October 16, 1911, staff gage. 
 
 Channel. — One channel at all stages. 
 
 Discharge measurements. — Between April 14 and October 16, 1911, current- 
 meter measurements were made by wading; from October 17, 1911, to December 
 31, 1912, measurement was made by a 4-foot sharp-crested weir, which has been 
 checked by meter measurements. 
 
 Diversions. — None above station. 
 
 Accuracy. — Records good. 
 
 The following discharge measurement was made by C. H. Pierce: 
 August 25, 1912: Width, 1 foot; area of section, 0.73 square foot; gage height, 0.12 
 foot; discharge, 0.57 second-foot. 
 
 Discharge, in second-feet, of Pauoa Stream below Kahuawai Spring, near Honolulu, 
 
 Oahu, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.97 
 
 1.87 
 1.77 
 1.77 
 1.66 
 
 1.57 
 1.66 
 2.19 
 2.19 
 1.87 
 
 1.87 
 1.87 
 1.87 
 1.87 
 1.77 
 
 0.93 
 .93 
 
 .85 
 .77 
 .77 
 
 .77 
 .77 
 .70 
 .70 
 
 .85 
 
 .85 
 .85 
 .85 
 .85 
 .85 
 
 1.10 
 1.02 
 1.02 
 1.02 
 .93 
 
 .93 
 .93 
 .93 
 
 1.87 
 2.19 
 
 11.00 
 5.14 
 3.89 
 2.30 
 
 1.87 
 
 1.47 
 1.47 
 1.47 
 1.37 
 1.47 
 
 1.47 
 1.57 
 1.87 
 1.57 
 2.88 
 
 1.37 
 1.37 
 1.28 
 2.08 
 1.97 
 
 1.37 
 1.37 
 1.37 
 1.37 
 2.30 
 
 1.37 
 1.37 
 1.37 
 1.47 
 1.47 
 
 1.47 
 1.28 
 1.19 
 1.37 
 1.37 
 
 1.47 
 1.37 
 1.19 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.02 
 
 1.02 
 1.02 
 1.02 
 1.02 
 1.02 
 
 1.10 
 1.66 
 2.08 
 1.37 
 1.10 
 
 1.19 
 
 1.02 
 .93 
 
 .77 
 
 .77 
 
 .77 
 .77 
 .77 
 .77 
 .77 
 
 1.02 
 
 1.02 
 
 .93 
 
 .85 
 
 .77 
 
 .70 
 .70 
 .70 
 .70 
 
 .70 
 
 .93 
 
 .77 
 .70 
 .70 
 
 .77 
 
 1.02 
 .93 
 
 .85 
 .77 
 .77 
 
 .77 
 .85 
 
 .85 
 .77 
 
 .77 
 
 .77 
 .77 
 .77 
 .77 
 .70 
 
 1.02 
 2.53 
 3.00 
 1.57 
 1.37 
 
 1.10 
 1.02 
 1.10 
 1.10 
 1.10 
 
 1.02 
 
 .85 
 .93 
 .85 
 .85 
 
 1.10 
 .93 
 
 .85 
 .85 
 .93 
 
 .93 
 
 4.85 
 3.63 
 3.37 
 1.77 
 
 1.19 
 
 1.10 
 1.02 
 
 .85 
 .85 
 
 8.14 
 
 2 
 
 9 18 
 
 3 
 
 13 52 
 
 4 
 
 3 76 
 
 5..... 
 
 2.64 
 
 6 
 
 2.30 
 
 7 
 
 2.08 
 
 8 
 
 1.97 
 
 9 
 
 1.87 
 
 10 
 
 1.77 
 
 11 
 
 1.77 
 
 12 
 
 1.77 
 
 13 
 
 1 97 
 
 14 
 
 1.66 
 
 15 
 
 1.77 
 
110 
 
 WATEB RESOURCES OF HAWAII, 1912. 
 
 Discharge, in second-feet, of Pauoa Stream below Kahuawai Spring, near Honolulu, 
 Oahu, for 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 1.77 
 1.66 
 1.66 
 1.57 
 1.47 
 
 1.37 
 1.37 
 1.28 
 1.19 
 1.19 
 
 1.19 
 1.10 
 1.10 
 1.10 
 .93 
 .93 
 
 0.85 
 
 .85 
 .85 
 .85 
 .85 
 
 1.02 
 1.66 
 10.87 
 4.43 
 2.08 
 
 1.57 
 1.28 
 1.19 
 1.10 
 
 1.66 
 1.57 
 1.47 
 1.77 
 1.47 
 
 1.47 
 1.37 
 1.37 
 1.37 
 1.37 
 
 1.28 
 1.37 
 1.28 
 1.37 
 1.37 
 1.47 
 
 1.87 
 1.77 
 1.67 
 1.57 
 1.47 
 
 1.37 
 1.57 
 1.57 
 1.57 
 1.57 
 
 1.77 
 1.57 
 1.37 
 1.47 
 1.47 
 
 1.28 
 
 1.19 
 1.10 
 1.10 
 1.19 
 
 1.37 
 1.19 
 1.19 
 2.88 
 1.37 
 
 3.89 
 4.57 
 3.63 
 1.97 
 1.66 
 1.57 
 
 1.02 
 1.02 
 .93 
 .93 
 .93 
 
 .93 
 .93 
 
 .85 
 .85 
 .85 
 
 1.10 
 1.10 
 .93 
 1.19 
 2.53 
 
 0.77 
 
 .77 
 .77 
 .77 
 .70 
 
 .93 
 .93 
 .93 
 
 .85 
 
 .85 
 
 .85 
 .85 
 .85 
 1.97 
 1.10 
 1.02 
 
 0.70 
 .70 
 .62 
 .62 
 .70 
 
 .70 
 .70 
 .70 
 .62 
 .62 
 
 2.64 
 1.77 
 
 .85 
 .77 
 1.47 
 1.19 
 
 0.70 
 .62 
 .62 
 .62 
 .62 
 
 .62 
 .55 
 
 .62 
 .62 
 .62 
 
 .62 
 .55 
 .55 
 .55 
 
 .85 
 
 0.85 
 
 .77 
 
 .77 
 .77 
 .77 
 
 .77 
 1.97 
 6.50 
 
 .93 
 2.53 
 
 12.92 
 2.64 
 1.77 
 1.61 
 1.44 
 1.27 
 
 0.93 
 
 .85 
 1.47 
 1.10 
 
 .85 
 
 2.19 
 3.63 
 2.76 
 1.57 
 1.57 
 
 1.47 
 1.37 
 1.37 
 1.87 
 2.08 
 
 1.77 
 
 17 
 
 1.77 
 
 18 
 
 1.97 
 
 19 
 
 7.30 
 
 20 
 
 3.24 
 
 21 
 
 6.98 
 
 22 
 
 4.85 
 
 23 
 
 3.63 
 
 24 
 
 3.12 
 
 25 
 
 2.76 
 
 26 
 
 2.53 
 
 27 
 
 2.30 
 
 28 
 
 2.30 
 
 
 2.19 
 
 30 
 
 2.08 
 
 31 
 
 2.08 
 
 
 
 Monthly discharge of Pauoa' Stream below Kahuawai Spring, near Honolulu, Oahu, 
 
 for 1912. 
 
 [Drainage area, 0.79 square mile.] 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 2.19 
 
 0.93 
 
 1.57 
 
 96.5 
 
 10.9 
 
 .70 
 
 1.44 
 
 82.8 
 
 11.0 
 
 .93 
 
 1.91 
 
 117 
 
 2.88 
 
 1.28 
 
 1.61 
 
 95.8 
 
 4.57 
 
 1.10 
 
 1.70 
 
 1.04 
 
 2.53 
 
 .85 
 
 1.09 
 
 64.9 
 
 2.08 
 
 .70 
 
 .99 
 
 60.9 
 
 2.64 
 
 .62 
 
 .88 
 
 54.2 
 
 1.02 
 
 .55 
 
 .72 
 
 42.8 
 
 12.9 
 
 .77 
 
 1.86 
 
 114 
 
 4.85 
 
 .85 
 
 1.64 
 
 97.6 
 
 13.5 
 
 1.66 
 
 3.45 
 
 212 
 
 13.5 
 
 .55 
 
 1.58 
 
 1,140 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October. 
 
 November 
 
 December 
 
 The year 
 
 KAHUAWAI SPRING NEAR HONOLULU, OAHU. 
 
 Location. — Upper Pauoa Valley about 1\ milea above Punchbowl and one-fourth 
 
 mile above Pauoa Stream weir station, about 2f miles northeast of Honolulu. 
 Records available. — September 23 to December 31, 1912. 
 Gage. — 2-inch by 2-inch heavy stake driven into pool of spring 10 feet above weir to 
 
 measure head on weir; head read twice daily, at 6 a. m. and 6 p. m., by graduated 
 
 stick. 
 Channel. — Spring boils up vertically in pool about 10 feet in diameter. 
 Weir discharge. — Weir is built between rock abutments on south side of pool about 
 
 15 feet from pool center; discharge computed by Francis formula for sharp-crested 
 
 weirs with end contractions. 
 Accuracy. — Records excellent. 
 
ISLAND OF OAHU. 
 
 Ill 
 
 Discharge, in second-feet, of Kahuawai Spring near Honolulu, Oahu, for 1912. 
 
 Day. 
 
 .1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 
 12 
 13 
 14 
 15. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 0.47 
 
 0.50 
 
 0.57 
 
 .50 
 
 .50 
 
 .60 
 
 .47 
 
 .50 
 
 .67 
 
 .47 
 
 .50 
 
 .75 
 
 .47 
 
 .47 
 
 .75 
 
 .47 
 
 .47 
 
 .71 
 
 .47 
 
 .47 
 
 .71 
 
 .47 
 
 .50 
 
 .71 
 
 .47 
 
 .50 
 
 .71 
 
 .47 
 
 .50 
 
 .71 
 
 .50 
 
 .50 
 
 .71 
 
 .47 
 
 .50 
 
 .71 
 
 .47 
 
 .50 
 
 .71 
 
 .47 
 
 .50 
 
 .64 
 
 .50 
 
 .50 
 
 .64 
 
 Day. 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Oct. Nov. Dec 
 
 0.47 
 
 .47 
 .47 
 .47 
 
 .47 
 
 .47 
 .47 
 .47 
 .47 
 
 .47 
 
 .54 
 .54 
 .54 
 .50 
 .50 
 .50 
 
 0.50 
 .50 
 .50 
 .54 
 .54 
 
 .54 
 .54 
 .54 
 .54 
 .54 
 
 .50 
 .50 
 .50 
 .54 
 .54 
 
 0.64 
 .63 
 .62 
 .61 
 
 .58 
 .57 
 .57 
 .57 
 
 .57 
 .57 
 .57 
 .57 
 .57 
 .57 
 
 Note.— Daily discharge computed by formula for sharp-crested weirs with end contractions: D=3.33 
 (L-0.2H)H* when L=1.50. 
 
 Monthly discharge of Kahuawai Spring near 
 
 Honolulu, 
 
 Oahu, for 1912. 
 
 
 Month. 
 
 Discharge in second-feet. 
 
 Eun-oflf 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 October 
 
 0.54 
 .54 
 .75 
 
 0.47 
 
 .47 
 
 .57 
 
 0.48 
 .51 
 .64 
 
 29.5 
 30.3 
 39.4 
 
 A. 
 
 
 A. 
 
 December 
 
 A. 
 
 
 
 The period 
 
 .75 
 
 .47 
 
 .54 
 
 99.2 
 
 
 
 
 NUUANU STREAM BASIN. 
 NUUANU STREAM AT KTTAKINI STREET, HONOLULU, OAHTJ. 
 
 Location. — At Kuakini Street bridge, Honolulu, Oahu. 
 
 Records available. — November 15, 1911, to September 30, 1912, when station was 
 
 discontinued. 
 Drainage area. — Not measured. 
 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p.m.; no change in datum. 
 Channel. — One at all stages. 
 Discharge measurements. — At low-water stages made by wading; at flood stages 
 
 from bridge. 
 Diversions. — All low-water discharge is diverted above station. , 
 Accuracy. — Records fair. 
 
 The following discharge measurement was made by C. H. Pierce: 
 August 23, 1912: Width, 2.4 feet; area of section, 0.63 square foot; gage height, 
 0.18 foot; discharge, 0.24 second-foot. 
 
112 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Nuuanu Stream at Kuahini Street, Honolulu, OahUj 
 
 for 1912. 
 [Oshimo, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 1 
 
 0.49 
 .49 
 .45 
 .48 
 .44 
 
 .40 
 .41 
 .48 
 .51 
 .49 
 
 .44 
 .40 
 .36 
 .39 
 .35 
 
 .31 
 .30 
 .28 
 .28 
 .28 
 
 .30 
 .30 
 .31 
 .30 
 .28 
 
 .26 
 .28 
 .25 
 
 .28 
 .28 
 
 .28 
 
 0.28 
 .30 
 .29 
 .28 
 .28 
 
 .28 
 .28 
 .28 
 .28 
 .30 
 
 .30 
 .28 
 .25 
 .25 
 .25 
 
 .25 
 .25 
 .25 
 .25 
 
 .28 
 
 .29 
 .34 
 1.58 
 1.32 
 .79 
 
 .42 
 .40 
 .32 
 .28 
 
 0.29 
 .28 
 .29 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .31 
 
 .74 
 
 1.36 
 1.21 
 1.01 
 .71 
 .51 
 
 .46 
 .45 
 .41 
 .52 
 .50 
 
 .41 
 .42 
 .41 
 .38 
 .38 
 
 .35 
 .36 
 
 .38 
 .38 
 .38 
 .38 
 
 0.30 
 .30 
 .29 
 
 .28 
 .30 
 
 .28 
 .55 
 .39 
 .72 
 
 .48 
 
 .34 
 .35 
 .32 
 .32 
 .29 
 
 .85 
 .56 
 .45 
 .42 
 .39 
 
 .42 
 .36 
 .42 
 .38 
 .39 
 
 .36 
 .35 
 .35 
 .34 
 .35 
 
 0.32 
 .30 
 .30 
 .30 
 .31 
 
 .30 
 .31 
 .31 
 .30 
 .30 
 
 .28 
 .28 
 .28 
 .30 
 .29 
 
 .28 
 .28 
 .28 
 .29 
 .29 
 
 .30 
 .32 
 .36 
 .39 
 .32 
 
 .36 
 .36 
 .55 
 .42 
 .36 
 .35 
 
 0.35 
 .35 
 .35 
 .36 
 .35 
 
 .35 
 .35 
 .35 
 .29 
 
 .28 
 
 .28 
 .25 
 .25 
 .19 
 .26 
 
 .20 
 .26 
 .21 
 .19 
 .18 
 
 .26 
 .26 
 .22 
 .32 
 .29 
 
 .26 
 .25 
 .32 
 .29 
 .26 
 
 0.26 
 .30 
 .29 
 .34 
 .29 
 
 .25 
 .25 
 .24 
 .24 
 .26 
 
 .25 
 .25 
 .26 
 .51 
 .34 
 
 .28 
 .28 
 .26 
 .20 
 .18 
 
 .20 
 .20 
 .21 
 .18 
 .19 
 
 .18 
 .18 
 .18 
 .16 
 .15 
 .15 
 
 0.15 
 .16 
 .15 
 .16 
 .15 
 
 .15 
 .21 
 .22 
 .20 
 .20 
 
 .26 
 .24 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .68 
 .41 
 .25 
 .32 
 .30 
 
 0.28 
 
 2 
 
 .29 
 
 3. 
 
 .30 
 
 4 
 
 .28 
 
 5.. 
 
 .26 
 
 6 
 
 .26 
 
 7 
 
 .29 
 
 8 
 
 .22 
 
 9 
 
 .20 
 
 10 
 
 .20 
 
 11 
 
 .20 
 
 12 
 
 .20 
 
 13 
 
 .20 
 
 
 .20 
 
 15 
 
 .20 
 
 16 
 
 .20 
 
 17 
 
 .16 
 
 18 
 
 .16 
 
 19 
 
 .16 
 
 20 
 
 .19 
 
 21 
 
 .18 
 
 22 
 
 .18 
 
 23 
 
 .19 
 
 24 
 
 .20 
 
 25 
 
 .20 
 
 26 
 
 .20 
 
 27 
 
 .20 
 
 28 
 
 .20 
 
 29 
 
 .20 
 
 30 
 
 .20 
 
 31 
 
 
 
 
 Discharge, in second-feet, of Nuuanu Stream at Kuahini Street, Honolulu, Oahu, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 1 
 
 3.8 
 3.8 
 3.0 
 3.6 
 2.8 
 
 2.2 
 2.3 
 3.6 
 4.2 
 3.8 
 
 2.8 
 2.2 
 1.8 
 2.1 
 1.7 
 
 1.3 
 1.2 
 1.0 
 1.0 
 1.0 
 
 1.2 
 1.2 
 1.3 
 1.2 
 1.0 
 
 .8 
 1.0 
 
 .7 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.2 
 1.1 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.2 
 
 1.2 
 1.0 
 
 .7 
 .7 
 
 .7 
 
 .7 
 .7 
 .7 
 .7 
 1.0 
 
 1.1 
 
 1.6 
 
 55.0 
 
 40.0 
 
 13.5 
 
 2.4 
 2.2 
 1.4 
 1.0 
 
 1.1 
 1.0 
 1.1 
 1.2 
 1.2 
 
 1.2 
 1.2 
 1.2 
 1.3 
 
 11.4 
 
 42.0 
 
 34.0 
 
 24.0 
 
 .2 
 
 4.2 
 
 3.2 
 3.0 
 2.3 
 
 4.4 
 4.0 
 
 2.3 
 2.4 
 2.3 
 2.0 
 2.0 
 
 1.7 
 1.8 
 2.0 
 2.0 
 2.0 
 2.0 
 
 1.2 
 1.2 
 1.1 
 1.0 
 1.2 
 
 1.0 
 5.0 
 2.1 
 
 10.6 
 3.6 
 
 1.6 
 1.7 
 1.4 
 1.4 
 1.1 
 
 16.2 
 5.2 
 3.0 
 2.4 
 2.1 
 
 2.4 
 1.8 
 2.4 
 2.0 
 2.1 
 
 1.8 
 1.7 
 1.7 
 1.6 
 1.7 
 
 1.4 
 1.2 
 1.2 
 1.2 
 1.3 
 
 1.2 
 1.3 
 1.3 
 1.2 
 1.2 
 
 1.0 
 1.0 
 1.0 
 1.2 
 1.1 
 
 1.0 
 1.0 
 1.0 
 1.1 
 1.1 
 
 1.2 
 1.4 
 1.8 
 2.1 
 1.4 
 
 1.8 
 1.8 
 5.0 
 2.4 
 1.8 
 1.7 
 
 1.7 
 1.7 
 1.7 
 1.8 
 1.7 
 
 1.7 
 1.7 
 1.7 
 1.1 
 1.0 
 
 1.0 
 
 .7 
 .7 
 .3 
 .8 
 
 .4 
 .8 
 .4 
 .3 
 .2 
 
 .8 
 
 .8 
 
 .5 
 
 1.4 
 
 1.1 
 
 .8 
 
 .7 
 
 1.4 
 
 1.1 
 
 .8 
 
 0.8 
 1.2 
 1.1 
 1.6 
 1.1 
 
 .7 
 .7 
 .6 
 .6 
 .8 
 
 .7 
 .7 
 .8 
 4.2 
 1.6 
 
 1.0 
 1.0 
 .8 
 .4 
 .2 
 
 .4 
 .4 
 .4 
 .2 
 .3 
 
 .2 
 .2 
 .2 
 .1 
 .1 
 .1 
 
 0.1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 
 .4 
 .5 
 .4 
 .4 
 
 .8 
 .6 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 9.0 
 2.3 
 
 .7 
 1.4 
 1.2 
 
 1.0 
 
 2 
 
 1.1 
 
 3 
 
 1.2 
 
 4 
 
 1.0 
 
 5 
 
 .8 
 
 6 
 
 .8 
 
 7 
 
 1.1 
 
 8 
 
 .5 
 
 9 
 
 
 10 
 
 
 11 
 
 
 12 
 
 
 13 
 
 
 14 
 
 
 15 
 
 
 16 
 
 
 17 
 
 
 18 
 
 
 19 
 
 
 20 
 
 .3 
 
 21 
 
 .2 
 
 22 
 
 .2 
 
 23 
 
 .3 
 
 24 
 
 .4 
 
 25 
 
 .4 
 
 26 
 
 A 
 
 27 
 
 .4 
 
 28 
 
 .4 
 
 29 
 
 .4 
 
 30 
 
 .4 
 
 31. 
 
 
 
 
ISLAND OF OAHU. 113 
 
 Monthly discharge of Nuuanu Stream at Kuakini Street, Honolulu, Oahu, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 
 4.2 
 55.0 
 42.0 
 16.2 
 5.0 
 1.8 
 4.2 
 9.0 
 1.2 
 
 0.7 
 .7 
 1.0 
 1.0 
 1.0 
 .2 
 .1 
 .1 
 .1 
 
 1.95 
 
 4.72 
 
 5.67 
 
 2.78 
 
 1.46 
 
 1.03 
 
 .75 
 
 .77 
 
 .49 
 
 120 
 
 272 
 
 349 
 
 165 
 89.8 
 61.3 
 46.1 
 47.4 
 29.2 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 July 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 
 
 55.0 
 
 .1 
 
 2.17 
 
 1,180 
 
 
 
 
 LT7LUMAHO DITCH IN NTTTTANO" VALLEY, NEAR HONOLULU, OAHU. 
 
 Location. — About 500 feet east of spillway of upper Nuuanu Valley reservoir, about 
 
 7 miles northeast of Honolulu. 
 Records available. — September 2, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, at 4 p. m.; no change of datum. 
 Channel. — One channel at all stages; shifting. 
 Discharge measurements. — By wading. 
 Accuracy. — Records fair. 
 
 Discharge measurements of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu, 
 
 for 1912. 
 
 [L. A. Moore, observer.] 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 
 H. R. Schulz 
 
 Feet. 
 
 0.43 
 
 .28 
 
 .31 
 
 .35 
 
 Sec.-ft. 
 0.52 
 
 Sept. 18 
 Oct. 21 
 
 G. K. Larrison 
 
 .38 
 
 do 
 
 .53 
 
 Dec. 24 
 
 do 
 
 .86 
 
 
 
 
 Daily gage height, in feet, of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu, 
 
 for 1912. 
 
 [L. A. Moore, observer.] 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 0.45 
 .45 
 .45 
 .44 
 .43 
 
 .44 
 .46 
 .48 
 .45 
 .44 
 
 .43 
 .42 
 .41 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .50 
 .41 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .45 
 
 .70 
 .80 
 
 1.10 
 .55 
 .53 
 .50 
 .50 
 
 .50 
 .55 
 .50 
 .50 
 .50 
 
 0.45 
 .44 
 .43 
 .50 
 .54 
 
 .50 
 
 .50 
 .65 
 .50 
 
 .46 
 .45 
 .43 
 .45 
 
 1.45 
 .60 
 .50 
 .43 
 .50 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .38 
 .38 
 .38 
 
 .38 
 
 .38 
 .38 
 .38 
 .38 
 
 .37 
 .37 
 .45 
 .40 
 
 0.40 
 .40 
 .40 
 .42 
 .40 
 
 .40 
 .50 
 .40 
 .40 
 
 .40 
 .40 
 .50 
 .40 
 
 .45 
 .40 
 .40 
 .40 
 
 0.35 
 .35 
 .35 
 .34 
 .34 
 
 .32 
 .32 
 .50 
 .60 
 .45 
 
 .40 
 .40 
 .40 
 .43 
 .45 
 
 .42 
 .41 
 .40 
 .40 
 
 .030 
 .30 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .30 
 .35 
 
 .40 
 
 .50 
 .30 
 
 .35 
 .30 
 
 0.30 
 .30 
 .30 
 .30 
 .30 
 
 .30 
 
 .30 
 .30 
 .29 
 .28 
 
 .28 
 
 .28 
 .27 
 .27 
 .27 
 
 0.30 
 .30 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 
 .40 
 
 .27 
 .27 
 
 ,30 
 
 0.30 
 .30 
 .30 
 .30 
 .32 
 
 .30 
 .35 
 .32 
 .33 
 .31 
 
 .30 
 .30 
 .30 
 .30 
 .55 
 
 .33 
 
 .32 
 .31 
 
 1.60 
 .60 
 
 1.70 
 .60 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .40 
 
 .40 
 .40 
 .40 
 
 .38 
 .37 
 .40 
 .70 
 .45 
 
 14694°— wsp 336—14 8 
 
114 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu, 
 
 for 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.40 
 .40 
 
 1.50 
 .50 
 .45 
 
 .45 
 .43 
 .41 
 .40 
 
 0.48 
 .46 
 .45 
 .44 
 .55 
 
 .50 
 .50 
 .43 
 .43 
 .43 
 .42 
 
 0.40 
 .40 
 .40 
 .40 
 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.45 
 .40 
 .40 
 .50 
 .45 
 
 .45 
 .50 
 .45 
 .40 
 .40 
 .40 
 
 0.40 
 .40 
 .40 
 .40 
 
 .38 
 
 .37 
 .37 
 .36 
 .36 
 .37 
 
 0.30 
 .30 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .30 
 .30 
 .30 
 
 0.27 
 .27 
 .26 
 .25 
 .25 
 
 1.30 
 .55 
 .45 
 .40 
 .55 
 .40 
 
 0.30 
 .30 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .30 
 .30 
 
 0.30 
 .30 
 .30 
 .30 
 .30 
 
 .90 
 .35 
 .35 
 .35 
 .34 
 .32 
 
 0.73 
 .50 
 .40 
 .35 
 .35 
 
 .34 
 .33 
 .35 
 .50 
 .35 
 
 0.54 
 
 22 
 
 .50 
 
 23 
 
 .43 
 
 24 
 
 .40 
 
 25 
 
 .33 
 
 26.. 
 
 .32 
 
 27 
 
 .30 
 
 28 
 
 .30 
 
 29 
 
 .30 
 
 30 
 
 .30 
 
 31 
 
 .32 
 
 
 
 Daily discharge, in second-feet, of Lulumaho ditch in Nuuanu Valley, near Honolulu, 
 
 Oahu, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.7 
 .7 
 .7 
 .7 
 .6 
 
 .7 
 .8 
 1.0 
 .7 
 .7 
 
 .6 
 .5 
 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 0.4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 1.2 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 
 .4 
 
 16.0 
 
 1.2 
 
 .7 
 
 .7 
 .6 
 .4 
 .4 
 
 0.4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 
 .4 
 
 .7 
 
 3.6 
 
 4.9 
 
 9.1 
 1.7 
 1.5 
 1.2 
 1.2 
 
 1.2 
 1.7 
 1.2 
 1.2 
 1.2 
 
 1.0 
 
 .8 
 
 .7 
 
 .7 
 
 1.7 
 
 1.2 
 1.2 
 .6 
 .6 
 .6 
 .5 
 
 0.7 
 
 .7 
 
 .6 
 
 1.2 
 
 1.6 
 
 1.2 
 1.2 
 2,9 
 1.2 
 1.0 
 
 .8 
 .7 
 .6 
 .7 
 2.3 
 
 15.0 
 
 2.3 
 
 1.2 
 
 .6 
 
 1.2 
 
 .4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 
 0.4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .3 
 .3 
 .3 
 
 .3 
 .3 
 .3 
 .3 
 .3 
 
 .3 
 .2 
 .2 
 
 .7 
 .4 
 
 .7 
 
 .4 
 
 .4 
 
 1.2 
 
 .7 
 
 .7 
 1.2 
 
 .7 
 .4 
 .4 
 .4 
 
 0.4 
 .4 
 .4 
 .5 
 .4 
 
 .4 
 
 .4 
 
 1.2 
 
 .4 
 .4 
 
 .4 
 
 .4 
 
 1.2 
 
 .4 
 .4 
 
 .4 
 
 .7 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .4 
 .4 
 .3 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 0.1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 
 .1 
 
 1.2 
 
 2.3 
 
 .7 
 
 .4 
 .4 
 .4 
 .6 
 
 .7 
 
 .5 
 .4 
 .4 
 
 .4 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 .5 
 .5 
 
 0.5 
 .5 
 .5 
 .5 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 .9 
 
 3.8 
 1.4 
 
 .5 
 2.5 
 
 .5 
 
 3.8 
 .9 
 .5 
 .5 
 .3 
 
 .3 
 .3 
 .2 
 .2 
 .2 
 
 14.0 
 3.1 
 1.9 
 1.4 
 3.1 
 1.4 
 
 0.5 
 .5 
 .5 
 .5 
 .5 
 
 .5 
 .6 
 .5 
 .4 
 .3 
 
 .3 
 .3 
 .3 
 .3 
 .3 
 
 .3 
 .3 
 .3 
 .5 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 •5 
 
 .5 
 .5 
 .5 
 .5 
 .5 
 
 0.5 
 .5 
 .5 
 .5 
 .5 
 
 .5 
 
 .5 
 
 .5 
 
 1.4 
 
 .5 
 
 .9 
 .5 
 .5 
 .5 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 .5 
 
 8.0 
 .9 
 .9 
 .9 
 .8 
 .6 
 
 05 
 .5 
 .5 
 .5 
 .6 
 
 .6 
 .9 
 .6 
 .7 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 3.1 
 
 .7 
 .6 
 .5 
 .5 
 .5 
 
 5.6 
 
 2.5 
 
 1.4 
 
 .9 
 
 .9 
 
 .8 
 .7 
 .9 
 2.5 
 .9 
 
 18.5 
 
 2 
 
 3.8 
 
 3 
 
 20.0 
 
 4 
 
 3.8 
 
 5 
 
 1.9 
 
 6 
 
 1.9 
 
 7 
 
 1.9 
 
 8 
 
 1.9 
 
 9 
 
 1.9 
 
 10 
 
 1.4 
 
 11 
 
 1.4 
 
 12 
 
 1.4 
 
 13 
 
 1.4 
 
 14 
 
 1.3 
 
 15 
 
 1.3 
 
 16 
 
 1.2 
 
 17 
 
 1.1 
 
 18 
 
 1.4 
 
 19 
 
 5.1 
 
 20 
 
 1.9 
 
 21.... 
 
 2.9 
 
 22 
 
 2.5 
 
 23 
 
 1.7 
 
 24 
 
 1.4 
 
 25 
 
 .7 
 
 26 
 
 .6 
 
 27 
 
 .5 
 
 28 
 
 .5 
 
 29 
 
 .5 
 
 30 
 
 .5 
 
 31 
 
 .6 
 
 
 
 Monthly discharge of Lulumaho ditch in Nuuanu Valley, near Honolulu, 
 
 Oahu, for 
 
 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 1.0 
 
 16.0 
 9.1 
 
 15.0 
 1.2 
 1.2 
 2.3 
 
 14.0 
 
 .5 
 
 8.0 
 
 5.6 
 
 20.0 
 
 0.4 
 .4 
 .4 
 .4 
 .2 
 .2 
 .1 
 .2 
 .3 
 .5 
 .5 
 .5 
 
 0.52 
 
 1.02 
 
 1.38 
 
 1.39 
 
 .46 
 
 .43 
 
 .49 
 
 1.49 
 
 .44 
 
 .84 
 
 1.03 
 
 2.80 
 
 32.0 
 58.7 
 84.8 
 82.7 
 28.3 
 25.6 
 30.1 
 91.6 
 26.2 
 51.6 
 61.3 
 172.0 
 
 B. 
 
 February 
 
 B. 
 
 March 
 
 B. 
 
 
 B. 
 
 May 
 
 B. 
 
 June 
 
 B. 
 
 July 
 
 C. 
 
 AugUSt ; 
 
 B. 
 
 September 
 
 B. 
 
 October 
 
 B. 
 
 November 
 
 B. 
 
 December 
 
 B. 
 
 
 
 The year 
 
 20.0 
 
 .1 
 
 1.03 
 
 746.0 
 
 
 
 
ISLAND OF OAHU. 
 
 115 
 
 LTJAKAHA WEIR IN NUUANU VALLEY, NEAR HONOLULU*, OAHU. 
 
 Location. — About 1 mile below reservoir No. 4 (main) in upper Nuuanu Valley, about 
 5 miles from Honolulu post office. 
 
 Records available.— January 1, 1910, to December 31, 1912. 
 
 Gage. — Head is measured in iron pipe set about 3 feet back of weir crest; read once 
 daily, at 4 p. m.; no change in datum. 
 
 Channel. — Concrete aqueduct; permanent. 
 
 Discharge measurements. — 4-foot sharp-crested weir of concrete with end con- 
 tractions; check measurements made with current meter by wading. 
 
 Diversions. — Aqueduct diverts low-water flow from Luakaha Stream, including 
 seepage from reservoir No. 4. 
 
 Cooperation. — Records furnished by department of water works, city of Honolulu. 
 
 Discharge measurements of Luakaha weir in NuuanuValley, near Honolulu, Oahu,for 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 19 
 19 
 20 
 
 G. K. Larrison a 
 
 Feet. 
 
 0.195 
 
 .195 
 
 .208 
 
 .202 
 
 Sec-ft. 
 0.901 
 
 do.& 
 
 do. a 
 
 1.43 
 
 .964 
 
 20 
 
 do.& 
 
 1.50 
 
 
 
 
 a Measurements made through notch in concrete aqueduct at a point about 15 feet below the weir. Owing 
 to roughness of bottom and sides of the aqueduct the water was very turbulent and the results obtained 
 are uncertain. 
 
 b Measurements made at point in stream about 20 feet above intake and about 200 feet above -weir. On 
 Sept. 19 the weir formula (end contracted, sharp crested) gave a discharge of 1.14 second-feet; on Sept. 20 
 gave a discharge of 1.20 second-feet and 1.31 second-feet. 
 
 Daily discharge, in second-feet, of Luakaha weir in Nuuanu Valley, near Honolulu, Oahu, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 5.4 
 5.4 
 5.4 
 
 4.8 
 4.8 
 
 4.8 
 4.8 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 5.4 
 4.2 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.6 
 3.1 
 3.1 
 3.1 
 3.1 
 
 3.1 
 3.1 
 3.1 
 3.1 
 3.1 
 3.1 
 
 3.1 
 3.6 
 3.1 
 3.1 
 3.1 
 
 3.1 
 3.1 
 3.1 
 3.6 
 3.1 
 
 3.6 
 3.1 
 3.1 
 3.1 
 2.6 
 
 2.6 
 2.6 
 2.6 
 2.6 
 2.6 
 
 3.1 
 3.1 
 3.1 
 21. 
 
 10. 
 
 4.8 
 3.6 
 3.1 
 3.1 
 
 3.1 
 3.1 
 3.1 
 3.1 
 3.6 
 
 3.6 
 3.6 
 3.6 
 6.0 
 
 10. 
 
 10. 
 6.0 
 
 10. 
 4.8 
 4.2 
 
 4.2 
 
 4.8 
 4.8 
 4.8 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.8 
 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.8 
 
 4.8 
 4.8 
 4.8 
 6.0 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.8 
 4.8 
 
 13. 
 6.0 
 
 4.8 
 4.8 
 4.8 
 
 4.2 
 4.2 
 
 4.8 
 4.8 
 4.2 
 
 4.8 
 4.2 
 4.2 
 4.2 
 4.2 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.1 
 3.1 
 
 3.1 
 3.1 
 3.1 
 3.1 
 3.1 
 
 3.1 
 3.1 
 3.1 
 3.1 
 3.1 
 
 3.1 
 3.1 
 3.1 
 3.6 
 3.6 
 
 3.6 
 4.8 
 6.0 
 3.6 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.1 
 
 3.1 
 3.1 
 3.6 
 3.1 
 3.1 
 
 3.1 
 3.1 
 
 4.8 
 4.2 
 3.6 
 
 3.6 
 3.6 
 3.1 
 3.1 
 3.1 
 
 3.1 
 3.1 
 2.6 
 3.6 
 2.6 
 
 2.6 
 2.6 
 2.6 
 2.6 
 2.6 
 
 3.1 
 2.6 
 2.6 
 2.6 
 2.6 
 
 2.6 
 2.6 
 4.8 
 3.6 
 3.1 
 
 3.1 
 3.1 
 3.1 
 13.0 
 3.6 
 
 3.6 
 3.6 
 3.1 
 3.1 
 3.1 
 
 3.1 
 3.1 
 2.6 
 2.6 
 2.6 
 
 2.6 
 2.6 
 2.6 
 2.6 
 2.6 
 2.6 
 
 2.1 
 2.1 
 2.1 
 2.6 
 2.6 
 
 2.1 
 2.1 
 2.1 
 2.1 
 2.1 
 
 2.1 
 2.1 
 2.1 
 2.6 
 2.6 
 
 3.6 
 2.6 
 2.1 
 2.1 
 2.1 
 
 1.7 
 1.7 
 1.7 
 1.7 
 1.7 
 
 6.0 
 6.0 
 3.6 
 3.1 
 3.1 
 3.1 
 
 1.7 
 1.7 
 1.7 
 1.7 
 1.7 
 
 1.7 
 2.6 
 1.7 
 1.7 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.1 
 1.1 
 1.1 
 1.7 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.7 
 
 1.7 
 2.1 
 1.7 
 2.1 
 
 1.7 
 
 1.7 
 1.7 
 1.7 
 1.7 
 2.1 
 
 1.7 
 1.7 
 1.7 
 1.7 
 1.7 
 
 13.0 
 4.8 
 4.2 
 3.1 
 3.1 
 2.1 
 
 2.1 
 2.1 
 2.1 
 2.1 
 2.1 
 
 1.7 
 1.7 
 2.1 
 2.6 
 2.1 
 
 1.7 
 1.7 
 
 1.7 
 1.7 
 1.7 
 
 2.6 
 2.1 
 2.1 
 2.1 
 2.1 
 
 7.3 
 
 3.6 
 2.6 
 2.6 
 2.6 
 
 2.6 
 2.6 
 3.1 
 3.6 
 3.1 
 
 5.4 
 
 2 
 
 10.0 
 
 3 
 
 21.0 
 
 4 
 
 5.4 
 
 5 
 
 4.2 
 
 6 
 
 3.6 
 
 7 
 
 4.8 
 
 8 
 
 4.8 
 
 9 
 
 4.8 
 
 10 
 
 3.6 
 
 11 
 
 3.6 
 
 12... 
 
 3.6 
 
 13 
 
 3.6 
 
 14 
 
 3.1 
 
 15 
 
 3.6 
 
 16 
 
 3.1 
 
 17 
 
 3.1 
 
 18 
 
 3.1 
 
 19 
 
 21.0 
 
 20 
 
 4.8 
 
 21 
 
 4.8 
 
 22 
 
 3.6 
 
 23 
 
 3.6 
 
 24 
 
 3.6 
 
 25 
 
 3.6 
 
 26 
 
 3.6 
 
 27 
 
 3.1 
 
 28 
 
 3.1 
 
 29 
 
 3.1 
 
 30 
 
 3.1 
 
 31 
 
 3.6 
 
 
 
 Note.— Weir has some velocity of approach, and discharge as published is probably too low; because of 
 this velocity of approach the weir formula Q=3.33 LH3« is used instead of Q=3.33 (L-0.2H)H3/». 
 
116 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of Luahaha weir in Nuuanu Valley, near Honolulu, Oahu, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 5.4 
 21.0 
 10.0 
 13.0 
 6.0 
 4.8 
 13.0 
 6.0 
 2.6 
 13.0 
 7.3 
 21.0 
 
 3.1 
 2.6 
 3.1 
 4.2 
 3.1 
 2.6 
 2.6 
 1.7 
 1.1 
 1.3 
 1.7 
 3.1 
 
 3.96 
 3.98 
 4.75 
 4.85 
 3.47 
 3.23 
 3.30 
 2.55 
 1.44 
 2.27 
 2.46 
 5.13 
 
 243 
 
 229 
 292 
 289 
 213 
 192 
 203 
 157 
 85.7 
 140 
 146 
 315 
 
 C. 
 C. 
 C. 
 C. 
 C. 
 C. 
 C. 
 C. 
 C. 
 
 c 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 c 
 
 December 
 
 c 
 
 
 
 The year 
 
 21.0 
 
 1.1 
 
 3.45 
 
 2,250 
 
 
 
 
 WAIKANE STREAM BASIN. 
 WAIKANE STREAM NEAR WAIKANE, OAHU. 
 
 Location. — One-half mile above belt road highway bridge at Waikane, opposite house 
 of Japanese gage keeper. 
 
 Records available.— January 27 to September 30, 1912, when station was discon- 
 tinued. 
 
 Gage. — Vertical staff; read once daily, about 7 a. m.; washed out September 30, 1912, 
 and not replaced. 
 
 Channel. — One at all stages; shifting. 
 
 Discharge measurements. — Made by wading. 
 
 Diversions. — Several above station. 
 
 Accuracy. — No discharge rating obtained. 
 
 Discharge measurements of Waikane Stream near Waikane, Oahu, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 27 
 May 24 
 Aug. 1 
 
 Pierce and Schulz 
 
 W.V.Hardy 
 
 C. H. Pierce 
 
 Feet. 
 1.05 
 1.11 
 .92 
 
 Sec.-ft. 
 6.31 
 8.27 
 4.34 
 
 Daily gage height, in feet, of Waikane Stream near Waikane, Oahu, for 1912. 
 
 [Sado, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 1 
 
 
 1.05 
 1.10 
 1.05 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.15 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.10 
 
 
 1.00 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.00 
 1.00 
 .90 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 .90 
 
 .90 
 
 1.00 
 
 """."90* 
 
 1.00 
 1.00 
 1.00 
 1.20 
 1.00 
 
 1.00 
 1.20 
 1.20 
 1.20 
 1.00 
 
 0.90 
 
 2 
 
 
 .90 
 
 3 
 
 
 1.00 
 
 4 
 
 
 .90 
 
 5 
 
 
 .90 
 
 6 
 
 
 1.00 
 
 7 
 
 
 1.00 
 
 8 
 
 
 1.00 
 
 9 
 
 
 .90 
 
 10 
 
 
 .90 
 
ISLAND OF OAHU. 117 
 
 Daily gage height, in feet, of Waihane Stream near Waihane, Oahu,for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 11 
 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.20 
 1.10 
 1.05 
 1.05 
 1.05 
 
 1.30 
 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.05 
 1.05 
 
 i.'io" 
 i.'oo" 
 
 1.00 
 1.00 
 1.05 
 1.00 
 
 0.90 
 1.00 
 1.00 
 .90 
 1.00 
 
 1.00 
 .90 
 .90 
 .90 
 .90 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 .90 
 .90 
 .90 
 
 1.00 
 
 0.90 
 1.20 
 1.20 
 1.20 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.20 
 1.20 
 
 1.00 
 
 1.00 
 
 1.00 
 
 .90 
 
 .90 
 
 .90 
 .90 
 1.00 
 1.00 
 .90 
 .90 
 
 1.00 
 .90 
 .90 
 
 1.00 
 .90 
 
 .90 
 
 1.00 
 
 1.00 
 
 .90 
 
 .90 
 
 .90 
 
 .90 
 
 .90 
 
 1.00 
 
 1.00 
 
 1.00 
 
 1.00 
 
 .90 
 
 .90 
 
 1.00 
 
 .90 
 
 1.00 
 
 12 
 
 
 .90 
 
 13 
 
 
 .90 
 
 14 
 
 
 .90 
 
 15 
 
 
 1.00 
 
 16 
 
 
 1.00 
 
 17 
 
 
 1.00 
 
 18 : 
 
 
 1.00 
 
 19 
 
 
 1.00 
 
 20 
 
 
 .90 
 
 21 
 
 
 .90 
 
 22 
 
 
 .90 
 
 
 
 1.00 
 
 24 
 
 
 1.00 
 
 
 
 .90 
 
 26 
 
 
 .90 
 
 27 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.00 
 
 28 
 
 1.00 
 
 29 
 
 .91 
 
 
 .91 
 
 31 
 
 
 
 
 WAIAHOLE STREAM BASIN. 
 WAIAHOLE STREAM AT MANIANIAULA, NEAR WAIKANE, OAHU. 
 
 Location. — 3£ miles southwest of Waikane, Oahu, by road and trail in upper 
 
 Waiahole Valley, at boundary line of Government and private land. 
 Records available. — September 25, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m.; no change in datum. 
 Channel. — One at all stages; somewhat shifting. 
 Discharge measurements. — By wading. 
 Diversions. — None above gage. 
 Accuracy. — Fair. 
 
 Discharge measurements of Waiahole Stream at Manianiaula, near Waihane, Oahu, in 
 
 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 3 
 
 26 
 
 May 24 
 
 Aug. 3 
 
 H. R. Schulz 
 
 Pierce and Schulz. . 
 
 W.V.Hardy 
 
 C.H.Pierce 
 
 Feet. 
 
 0.99 
 
 .98 
 
 .94 
 
 .96 
 
 Sec.-ft. 
 25.1 
 25.1 
 21.5 
 21.6 
 
 Sept. 16 
 Oct. 16 
 Dec. 31 
 
 C. K. Larrison 
 
 do 
 
 Larrison <fe Dort... 
 
 Feet. 
 0.94 
 .98 
 .91 
 
 Sec.-ft. 
 19.8 
 23.6 
 18.2 
 
 Daily gage height, in feet, of Waiahole Stream at Manianiaula, near Waikane, Oahu, for 
 
 1912. 
 
 
 
 
 
 [Peleioholani, 
 
 observer.] 
 
 
 
 
 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.01 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 0.98 
 .98 
 .98 
 .98 
 .98 
 
 .98 
 .98 
 .98 
 .98 
 1.00 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 0.98 
 .98 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 0.95 
 
 2 
 
 .98 
 
 3 
 
 1.88 
 
 4 
 
 1.00 
 
 5 
 
 .98 
 
 6 
 
 .98 
 
 7 
 
 .95 
 
 8 
 
 .95 
 
 9 
 
 .95 
 
 10 
 
 .95 
 
118 
 
 WATEE RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Waiahole Stream at Manianiaula, near Waikane, Oahu,for 
 
 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dee. 
 
 11 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.02 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.08 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.00 
 
 "6." 95* 
 .95 
 
 .95 
 1.05 
 .96 
 .95 
 .95 
 .95 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.00 
 1.10 
 1.00 
 1.00 
 
 1.00 
 .98 
 .98 
 .98 
 .98 
 
 .98 
 .98 
 .98 
 .98 
 .98 
 
 .98 
 .98 
 .95 
 .95 
 .95 
 .95 
 
 0.98 
 .98 
 .98 
 ,98 
 .98 
 
 .98 
 .98 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .98 
 .98 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 
 .98 
 .98 
 .98 
 .98 
 
 .98 
 .99 
 .95 
 .95 
 .95 
 
 1.05 
 
 .98 
 
 1.15 
 
 1.00 
 
 .98 
 
 .95 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .98 
 .98 
 .98 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 1.02 
 .98 
 
 0.95 
 
 12 
 
 .92 
 
 13 
 
 .92 
 
 14 
 
 .92 
 
 15 
 
 .92 
 
 16 
 
 .92 
 
 17 
 
 .92 
 
 18... 
 
 .92 
 
 19 
 
 .92 
 
 20 
 
 .92 
 
 21 
 
 .92 
 
 22 
 
 .99 
 
 23 
 
 .95 
 
 24 
 
 .95 
 
 25 
 
 .95 
 
 26 
 
 .92 
 
 27 
 
 .92 
 
 
 .92 
 
 29 
 
 
 
 
 31 
 
 .91 
 
 Daily discharge, in second-feet, of Waiahole Stream at Manianiaula, near Waikane, Oahu, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 ! 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 27.5 
 
 26.5 
 26.5 
 26.5 
 28.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 36.0 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 26.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 "2L5" 
 21.5 
 
 21.5 
 32.0 
 22.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 26.5 
 26.5 
 26.5 
 26.5 
 
 24.5 
 
 24.5 
 24.5 
 24.5 
 24.5 
 
 24.5 
 24.5 
 24.5 
 24.5 
 26.5 
 
 26.5 
 26.5 
 38.0 
 26.5 
 26.5 
 
 26.5 
 24.5 
 24.5 
 24.5 
 24.5 
 
 24.5 
 24.5 
 24.5 
 24.5 
 24.5 
 
 24.5 
 24.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 24.5 
 24.5 
 24.5 
 24.5 
 24.5 
 
 24.5 
 24.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5" 
 
 21.5 
 21.5 
 21.5 
 21.5 
 24.5 
 24.5 
 
 24.5 
 24.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 24.5 
 24.5 
 24.5 
 24.5 
 
 24.5 
 25.5 
 21.5 
 21.5 
 21.5 
 
 32.0 
 24.5 
 44.0 
 26.5 
 24.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 
 24.5 
 24.5 
 24.5 
 21.5 
 21.5 
 
 21.5 
 21.5 
 21.5 
 28.5 
 24.5 
 
 21.5 
 
 2 
 
 24.5 
 
 3 
 
 132.0 
 
 4 
 
 26.5 
 
 5 
 
 24.5 
 
 6 
 
 24.5 
 
 7 
 
 21.5 
 
 8 
 
 21.5 
 
 9 
 
 21.5 
 
 10 
 
 21.5 
 
 11 
 
 21.5 
 
 12 
 
 18.7 
 
 13 
 
 18.7 
 
 14 : 
 
 18.7 
 
 15 
 
 18.7 
 
 16 
 
 18.7 
 
 17 
 
 18.7 
 
 18 
 
 18.7 
 
 19 
 
 18.7 
 
 20 
 
 18.7 
 
 21 
 
 18.7 
 
 22 
 
 25.5 
 
 23 
 
 21.5 
 
 24 
 
 21.5 
 
 25 
 
 21.5 
 
 26 
 
 18.7 
 
 27 
 
 18.7 
 
 28 
 
 18.7 
 
 29 
 
 18.7 
 
 30 
 
 17.8 
 
 31 
 
 17.8 
 
 
 
ISLAND OP OAHU. 119 
 
 Monthly discharge of Waiahole Stream at Manianiaula, near Waihane, Oahu, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 
 26.5 
 28.5 
 26.5 
 36.0 
 32.0 
 26.5 
 38.0 
 24.5 
 24.5 
 44.0 
 28.5 
 132.0 
 
 26.5 
 26.5 
 26.5 
 26.5 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 21.5 
 17.8 
 
 26.5 
 26.6 
 26.5 
 26.8 
 22.9 
 22.2 
 24.9 
 22.4 
 21.7 
 23.5 
 22.1 
 24.1 
 
 1,630 
 1,530 
 1,630 
 1,590 
 1,410 
 1,320 
 1,530 
 1,380 
 1,290 
 1,440 
 1,320 
 1,480 
 
 C. 
 
 
 C. 
 
 March . 
 
 C. 
 
 April 
 
 C. 
 
 
 B. 
 
 June 
 
 B. 
 
 July 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 October 
 
 B. 
 
 November 
 
 B. 
 
 December 
 
 B. 
 
 
 
 The year s . .' 
 
 132.0 
 
 17.8 
 
 24.3 
 
 17,600 
 
 
 
 
 a 8 days only. 
 WAIAHOLE STREAM AT WAIAHOLE, NEAR WAIKANE, OAHU. 
 
 Location. — One-fourth mile above belt road highway bridge, 1 mile southeast of 
 
 Waikane, Oahu. 
 Records available.— September 23, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, about 7 a. m. ; no change in datum. 
 Channel. — One at all stages, slightly shifting. 
 Discharge measurements. — Low- water measurements made by wading; flood 
 
 measurements from bridge. 
 Diversions. — Several irrigation ditches divert water above the station: none below. 
 Accuracy. — Record fair. 
 
 Discharge measurements of Waiahole Stream at Waiahole, near Waihane, Oahu, 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 2 
 
 23 
 
 May 23 
 
 H. R.Schulz 
 
 C.H.Pierce 
 
 W.V.Hardy 
 
 Feet. 
 1.25 
 1.22 
 1.10 
 
 Sec.-ft. 
 38.7 
 39.3 
 25.1 
 
 Aug. 1 
 
 5 
 
 Dec. 31 
 
 C. H. Pierce 
 
 do 
 
 Larrison and Dort . 
 
 Feet. 
 1.11 
 1.14 
 1.10 
 
 Sec.-ft. 
 27.0 
 29.2 
 26.3 
 
 Daily gage height, in feet, of Waiahole Stream at Waiahole, near Waikane, Oahu, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 , Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.22 
 1.22 
 1.25 
 1.25 
 1.25 
 
 1.22 
 1.25 
 1.22 
 1.25 
 1.32 
 
 1.22 
 1.22 
 1.22 
 1.22 
 1.22 
 
 1.20 
 
 1.18 
 1.18 
 1.18 
 1.18 
 
 1.18 
 1.18 
 1.18 
 1.18 
 1.18 
 
 1.22 
 1.18 
 1.18 
 1.18 
 1.18 
 
 1.18 
 1.18 
 1.18 
 1.18 
 1.18 
 
 1.18 
 1.20 
 1.20 
 1.20 
 1.18 
 
 1.18 
 1.15 
 1.15 
 1.20 
 1.20 
 
 
 1.10 
 1.10 
 1.13 
 1.13 
 1.10 
 
 1.13 
 1.13 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.12 
 1.13 
 1.13 
 1.13 
 1.13 
 
 1.13 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.45 
 1.20 
 1.20 
 
 "i.'io" 
 
 1.10 
 
 1.15 
 1.15 
 1.12 
 1.10 
 1.10 
 
 1.25 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.15 
 1.15 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.15 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.15 
 1.15 
 1.10 
 1.10 
 1.10 
 
 1.15 
 1.15 
 1.15 
 1.15 
 1.15 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.15 
 
 1.15 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.25 
 
 2 
 
 1.25 
 1.25 
 1.25 
 1.25 
 
 1.25 
 1.28 
 1.25 
 1.25 
 1.25 
 
 1.25 
 1.25 
 1.25 
 1.28 
 1.25 
 
 1.25 
 
 3 
 
 1.40 
 
 4 
 
 1.40 
 
 5 
 
 1.25 
 
 6 
 
 1.10 
 
 7 
 
 1.10 
 
 8... 
 
 1.10 
 
 9 
 
 1.10 
 
 10 
 
 1.10 
 
 11 
 
 1.10 
 
 12 
 
 1.10 
 
 13 
 
 1.10 
 
 14 
 
 1.10 
 
 15 
 
 1.10 
 
120 
 
 WATER, RESOURCES OE HAWAII, 1912. 
 
 Daily gage height, in feet, of Waiahole Stream, at Waiahole, near Waikane, Oahu,for 
 
 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 1.25 
 1.25 
 1.25 
 1.25 
 1.25 
 
 1.25 
 1.25 
 1.25 
 1.28 
 1.25 
 
 1.22 
 
 1.22 
 1.25 
 1.25 
 1.25 
 1.22 
 
 1.22 
 1.22 
 1.22 
 1.22 
 1.22 
 
 1.25 
 1.22 
 1.22 
 1.18 
 1.18 
 
 1.18 
 1.18 
 1.18 
 1.18 
 
 1.18 
 1.18 
 1.18 
 1.18 
 1.18 
 
 1.18 
 1.18 
 1.18 
 1.18 
 1.18 
 
 1.15 
 1.15 
 1.15 
 1.15 
 1.18 
 1.15 
 
 1.20 
 1.20 
 1.20 
 1.20 
 1.18 
 
 1.18 
 1.18 
 1.20 
 1.20 
 1.18 
 
 1.18 
 1.18 
 1.18 
 1.18 
 1.18 
 
 ""i.'io" 
 
 1.10 
 1.10 
 
 1.10 
 1.15 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.13 
 
 1.13 
 1.13 
 1.13 
 1.13 
 1.13 
 
 1.13 
 1.13 
 1.20 
 1.13 
 1.13 
 
 ::::::: 
 
 1.10 
 1.10 
 1.15 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.15 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.15 
 1.15 
 
 1.15 
 1.20 
 1.20 
 1.20 
 1.15 
 1.15 
 
 1.20 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.20 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.20 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.10 
 
 17 
 
 1.10 
 
 18 
 
 1.25 
 
 19 
 
 1.10 
 
 20 . 
 
 1.10 
 
 21 
 
 1.25 
 
 22 
 
 1.25 
 
 23 
 
 1.10 
 
 24 
 
 1.10 
 
 25 
 
 
 25 
 
 
 27 
 
 
 28 
 
 
 23 
 
 
 33 
 
 
 31 
 
 1.10 
 
 
 
 
 
 Daily discharge, in second-feet, of Waiahole Stream at Waiahole, near Waikane, Oahu, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 2 
 
 44 
 
 3 
 
 44 
 
 4 
 
 44 
 
 5 
 
 44 
 
 6 
 
 44 
 
 7 
 
 49 
 
 8 
 
 44 
 
 9 
 
 44 
 
 10 
 
 44 
 
 11 
 
 44 
 
 12 
 
 44 
 
 13 
 
 44 
 
 14 
 
 49 
 
 15 
 
 44 
 
 16 
 
 44 
 
 17 
 
 44 
 
 18 
 
 44 
 
 19 
 
 44 
 
 20 
 
 44 
 
 21 
 
 44 
 
 22 
 
 44 
 
 23 
 
 44 
 
 24 
 
 49 
 
 25 
 
 44 
 
 26 
 
 39 
 
 27 
 
 39 
 
 28 
 
 44 
 
 29 
 
 44 
 
 30. . . 
 
 44 
 
 31 
 
 39 
 
 44 
 
 33 
 
 33 
 
 33 
 
 36 
 
 33 
 
 28 
 
 28 
 
 26 
 
 36 
 
 26 
 
 Note.— Discharge from July 14 to Aug. 
 Manianiaula. 
 
 3 estimated by comparison with Waiahole Stream at 
 
ISLAND OF OAHU. 121 
 
 Monthly discharge of Waiahole Stream at Waiahole near Waikane, Oahu, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 
 49 
 55 
 39 
 36 
 30 
 36 
 80 
 44 
 30 
 36 
 36 
 70 
 
 39 
 33 
 30 
 30 
 26 
 26 
 27 
 26 
 26 
 26 
 26 
 26 
 
 42.6 
 39.4 
 32.8 
 33.9 
 26.5 
 27.3 
 32.9 
 27.0 
 26.4 
 28.0 
 33.3 
 32.3 
 
 2,620 
 2,260 
 2,020 
 2,020 
 1,630 
 1,620 
 2,020 
 1,660 
 1,570 
 1,720 
 1,980 
 1,990 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 D. 
 
 
 B. 
 
 July 
 
 C. 
 
 
 C. 
 
 
 B. 
 
 
 B. 
 
 November 
 
 B. 
 
 
 C. 
 
 
 
 The year 
 
 80 
 
 26 
 
 32.2 
 
 23, 100 
 
 
 
 
 a 9-day period. 
 KAHANAIKI STREAM NEAR WAIMAHALO, OAHTT. 
 
 Location. — At highway bridge on Waimanalo-Honolulu road, about 12 milea east of 
 
 Honolulu by road. 
 Records available. — Gage heights and discharge measurements from November 12 
 
 to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in 
 
 datum. 
 Channel. — One at all stages; permanent. 
 
 Diversions. — One from each of the two branches of the stream above the station. 
 Accuracy. — Good . 
 
 Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 
 Discharge measurements. — Low-water stages by wading; flood measurements 
 
 from bridge. 
 
 Discharge measurements of Kahanaihi Stream near Kailua, Oahu, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Nov. 20 
 
 
 Feet. 
 1.00 
 .99 
 
 Sec-feet. 
 0.65 
 
 Dec. 27 
 
 
 .82 
 
 
 
 
 Daily gage height, in feet, of Kahanailci Stream near Waimanalo, Oahu, for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.72 
 1.39 
 2.24 
 1.62 
 1.58 
 
 1.36 
 1.36 
 1.35 
 1.31 
 1.29 
 
 11 
 
 
 1.25 
 1.22 
 1.22 
 1.20 
 1.19 
 
 1.16 
 1.16 
 1.16 
 1.16 
 1.15 
 
 21 
 
 1.12 
 1.14 
 1.14 
 1.12 
 1.11 
 
 1.10 
 1.09 
 1.09 
 1.15 
 1.12 
 
 1.20 
 
 2 
 
 
 12. 
 
 1.05 
 1.02 
 1.04 
 1.10 
 
 1.04 
 1.02 
 1.02 
 1.04 
 1.02 
 
 22 
 
 1.22 
 
 3 
 
 
 13 
 
 23 
 
 1.15 
 
 4 
 
 
 14 
 
 24 
 
 1.15 
 
 5 
 
 
 15 
 
 25. . 
 
 1.15 
 
 6 
 
 
 16 
 
 26 
 
 1.15 
 
 7... 
 
 
 17 
 
 27 
 
 1.00 
 
 8 
 
 
 18 
 
 28 
 
 .98 
 
 9 
 
 
 19 
 
 29 
 
 .98 
 
 10 
 
 
 20 
 
 30 
 
 .98 
 
 
 
 
 31 
 
 .98 
 
 
 
 
 
122 
 
 WATEB RESOURCES OF HAWAII, 1912, 
 
 XAILTJA STREAM NEAR WAIMANALO, OAHU. 
 
 Location. — Three-fourths mile east of point on Waimanalo-Honolulu road, where 
 
 road to rice mill leaves main highway; about 150 feet below intake at Wong 
 
 Leong ditch. 
 Records available. — Gage heights and discharge measurements from November 12 
 
 to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in 
 
 datum. 
 Channel. — One at all stages; fairly permanent. 
 Discharge measurements. — By wading. 
 Diversions. — Wong Leong ditch diverts all low-water discharge at point 150 feet 
 
 above gage. 
 Accuracy. — Record fair. 
 Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 
 
 Discharge measurements of Kailua Stream near Waimanalo, Oahu, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Not. 20 
 
 G. K. Larrison 
 
 Feet. 
 1.79 
 2.19 
 
 Sec.-ft. 
 
 (a) 
 
 1.64 
 
 I>ec. 276 
 
 
 
 
 
 a Water diverted by ditch at dam 150 feet above. & Wading 100 feet above gage. 
 
 Daily gage height, in feet, of Kailua Stream near Waimanalo, Oahu, for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 2.89 
 2.20 
 4.25 
 2.60 
 2.54 
 
 2.31 
 2.40 
 2.41 
 2.34 
 2.31 
 
 11 
 
 
 2.31 
 2.30 
 2.30 
 2.30 
 2.30 
 
 2.29 
 2.28 
 2.26 
 2.32 
 2.29 
 
 21 
 
 1.84 
 1.88 
 1.81 
 1.80 
 1.80 
 
 1.80 
 1.80 
 2.00 
 2.01 
 1.80 
 
 2.30 
 
 2 
 
 
 12 
 
 1.78 
 1.78 
 1.78 
 1.89 
 
 1.80 
 1.80 
 1.80 
 1.80 
 1.80 
 
 22 
 
 2.30 
 
 3 
 
 
 13 
 
 23 
 
 2.28 
 
 4 
 
 
 14 
 
 24 '.. 
 
 2.28 
 
 5 
 
 
 15. 
 
 25 
 
 2.20 
 
 6.. 
 
 
 16 
 
 26 
 
 2.20 
 
 7... 
 
 
 17 
 
 27 
 
 2.20 
 
 8 
 
 
 18 
 
 28 
 
 2.20 
 
 9 
 
 
 19 
 
 29 
 
 2.20 
 
 10 
 
 
 20 
 
 30 
 
 2.20 
 
 
 
 
 31 
 
 2.19 
 
 
 
 
 
 POHAKEA STREAM NEAR WAIMANALO, OAHU. 
 
 Location. — One-half mile above highway bridge on the Waimanalo-Honolulu road, 
 
 about 12 miles by road east of Honolulu. 
 Records available. — November 12 to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in 
 
 datum. 
 Channel. — One at all stages; fairly permanent. 
 Discharge measurements. — By wading for all stages. 
 Diversions. — None above station; two small ditches below station. 
 Accuracy. — Fair. 
 Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 
 
ISLAND OF OAHU. 123 
 
 Discharge measurements ofPohahea Stream near Waimanalo, Oahu, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Nov. 20 
 
 G . K. Larrison 
 
 Feet. 
 0.92 
 1.18 
 
 Sec-ft. 
 0.06 
 
 Dec. 27 
 
 
 .17 
 
 
 
 
 Daily gage height, in feet, of Pohahea Stream near Waimanalo, Oahu, for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1_ 
 
 
 1.69 
 j 1.21 
 1.74 
 1.55 
 1.52 
 
 1.38 
 1.38 
 1.34 
 1.31 
 1.29 
 
 11 
 
 
 1.28 
 1.24 
 1.28 
 1.24 
 1.22 
 
 1.22 
 1.22 
 1.21 
 1.21 
 1.20 
 
 21 
 
 1.14 
 1.11 
 1.06 
 1.02 
 1.01 
 
 1.00 
 1.00 
 1.02 
 1.20 
 1.05 
 
 1.22 
 
 2 
 
 
 12 
 
 0.95 
 .95 
 .92 
 
 1.04 
 
 .95 
 .95 
 .92 
 .94 
 
 .94 
 
 22 
 
 1.21 
 
 3 
 
 
 13 
 
 23 
 
 1:20 
 
 4 •. 
 
 
 14 
 
 24 
 
 1.20 
 
 5 
 
 
 15 
 
 25 
 
 1.20 
 
 6 
 
 
 16 
 
 26 
 
 1.20 
 
 7 
 
 
 17 
 
 27 
 
 1.15 
 
 8 
 
 
 18 
 
 28 
 
 1.15 
 
 9 
 
 
 19 
 
 29 
 
 1.15 
 
 10 
 
 
 20 
 
 30 
 
 1.15 
 
 
 
 
 31 
 
 1.15 
 
 
 
 
 
 KAMAKALEPO STREAM NEAR WAIMANALO, OAHTT, 
 
 Location. — At highway bridge on Waimanalo-Honolulu road, about 12 miles east, 
 
 by road, of Honolulu. 
 Records available. — November 12 to December 3, 1912. 
 Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; washed out by 
 
 flood December 3, 1912; not replaced. 
 Channel. — One at all stages; fairly permanent. 
 Discharge measurements.— Low-water measurements made by wading; flood 
 
 measurements made from bridge. 
 Diversions. — None. 
 Accuracy. — Fair. 
 Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 
 
 Discharge measurements of Kamahalepo Stream near Waimanalo, Oahu, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Nov. 20 
 
 G. K. Larrison 
 
 Feet. 
 1.24 
 
 Sec.-ft. 
 0.96 
 
 Dec. 27 
 
 Larrison and Dort 
 
 1.52 
 
 
 
 
 
 Daily gage 
 
 height, 
 
 in feet, 
 
 of Kamahalepo 
 
 Stream near Waimanalo, Oahu, for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.92 
 1.40 
 1.50 
 
 11 
 
 
 
 21 , 
 
 1.25 
 1.29 
 1.28 
 1.25 
 1.25 
 
 1.25 
 1.25 
 1.26 
 1.34 
 1.28 
 
 
 2 
 
 
 12 
 
 1.25 
 1.22 
 1.22 
 1.28 
 
 1.24 
 1.22 
 1.22 
 1.24 
 1.22 
 
 
 22 
 
 
 3 
 
 
 13 
 
 23 
 
 
 4 
 
 
 14 
 
 24 
 
 
 5 
 
 
 
 15 : 
 
 25 
 
 
 6 
 
 
 
 16 
 
 26 
 
 
 7 
 
 
 
 17 
 
 27 
 
 
 8 
 
 
 
 18 
 
 28 
 
 
 9... 
 
 
 
 19 i 
 
 29 
 
 
 10 
 
 
 
 20 
 
 30 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
124 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 KAIMI STREAM NEAR WAIMANALO, OAHU. 
 
 Location. — At highway bridge on Waimanalo-Honolulu road about 12£ miles east by- 
 road from Honolulu. 
 
 Records available. — Gage heights and discharge measurements from November 12 
 to December 31, 1912. 
 
 Drainage area. — Not measured. 
 
 Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m. ; no change in datum. 
 
 Channel. — One at all stages; fairly permanent. 
 
 Discharge measurements. — Low-water by wading; floods from bridge. 
 
 Diversions. — None. 
 
 Accuracy. — Good . 
 
 Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 
 
 Discharge measurements of Kaimi Stream near Waim 
 
 analo, Oahu, in 1912. 
 
 Pate. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge, 
 
 Nov. 20 
 
 G. K. Xiarrison . .' 
 
 Feet. 
 1.59 
 1.86 
 
 Sec.-ft. 
 1.38 
 
 Dec. 27 
 
 
 3.72 
 
 
 
 
 Daily gage height, in feet, of Kaimi Stream near Waimanalo, Oahu, for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 2.48 
 1.82 
 2.72 
 2.01 
 1.99 
 
 1.84 
 1.88 
 1.89 
 1.89 
 1.90 
 
 11 
 
 
 1.80 
 1.70 
 1.70 
 1.70 
 
 1.88 
 
 1.89 
 1.90 
 1.89 
 1.95 
 1.89 
 
 21 
 
 1.64 
 1.66 
 1.62 
 1.60 
 1.61 
 
 i 1.60 
 1.65 
 1.76 
 1.75 
 1.69 
 
 1.90 
 
 2 
 
 
 12 
 
 1.58 
 1.58 
 1.58 
 1.68 
 
 1.58 
 1.58 
 1.58 
 1.60 
 1.59 
 
 22 
 
 1 89 
 
 3 
 
 
 13 
 
 23 
 
 1.88 
 
 4 
 
 
 14 
 
 24 
 
 1.90 
 
 5 
 
 
 15 
 
 25 
 
 1.90 
 
 6 
 
 
 16 
 
 26 
 
 1.90 
 
 7. . 
 
 
 17 
 
 27 
 
 1.90 
 
 8 
 
 
 18 
 
 28 
 
 1.85 
 
 9 
 
 
 19 
 
 29 .... 
 
 1.85 
 
 10 
 
 
 20 
 
 30 
 
 1.85 
 
 
 
 
 31 
 
 1.88 
 
 
 
 
 
 MAKAWAO STREAM NEAR WAIMANALO, OAHTJ. 
 
 Location. — One-fourth mile upstream from confluence of Makawao and Kaimi 
 streams and 100 feet above intake of irrigation ditch on Waimanalo-Honolulu 
 road about 12| miles east by road of Honolulu, Oahu. 
 
 Records available. — November 12 to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 7 a. m. and 4 p. m.; no change in datum. 
 
 Channel. — One at all stages; practically permanent. 
 
 Discharge measurements. — By wading. 
 
 Diversions. — Low- water discharge of two main branches is diverted into the Makawao 
 ditch at points about three-fourths mile above station. An irrigation ditch 
 diverts most of the low-water discharge at a point about 100 feet below the gage. 
 
 Accuracy. — Records excellent. 
 
 Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 
 
 Discharge measurements of Makawao Stream near 
 
 Waimanalo, Oahu, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Nov. 20 
 
 G. K. Larrison 
 
 Feet. 
 0.81 
 .90 
 
 Stt.-ft. 
 0.96 
 
 Dec. 27 
 
 Larrison and Dort 
 
 2.24 
 
 
 
 
ISLAND OF OAHU. 125 
 
 Daily gage height, in feet, of Makawao Stream near Waimanalo, Oahu, for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1...., 
 
 
 1.45 
 1.99 
 2.46 
 1.14 
 1.09 
 
 .86 
 .94 
 .96 
 .99 
 .95 
 
 11 
 
 
 0.95 
 .96 
 .95 
 .92 
 
 .92 
 
 .92 
 .92 
 .95 
 .95 
 .92 
 
 21 
 
 0.84 
 
 .84 
 .82 
 .82 
 .82 
 
 .82 
 .82 
 .89 
 .84 
 .82 
 
 0.90 
 
 2 
 
 
 12 
 
 0.80 
 .80 
 .81 
 .81 
 
 .81 
 .80 
 .80 
 .81 
 .80 
 
 22 
 
 .94 
 
 3 
 
 
 13 
 
 23 
 
 .91 
 
 4 
 
 
 14 
 
 24 
 
 .91 
 
 5 
 
 
 15 
 
 25 
 
 .90 
 
 6 
 
 
 16 
 
 26 
 
 .90 
 
 7 
 
 
 17 
 
 27 
 
 .90 
 
 8 ;... 
 
 
 18 
 
 28 
 
 .90 
 
 9 
 
 
 19 
 
 29 
 
 .90 
 
 10 
 
 
 20 
 
 30 
 
 .90 
 
 
 
 
 31 
 
 .90 
 
 
 
 
 
 MAKAWAO DITCH NEAR WAIMANALO, OAHU. 
 
 Location. — At east end of flume in Makawao Gulch, 4 miles west of Waimanalo 
 plantation headquarters. Waimanalo plantation is about 15 miles east of Hono- 
 lulu, Oahu. 
 
 Records available.— November 1 to December 31, 1912. 
 
 Gage. — Vertical staff on right side at east end of flume; graduated to hundredths; 
 read twice daily, at 8 a. m. and 4 p. m., by ditch tender at plantation. 
 
 Channel. — Flume 2.0 x 1.25 feet; clean and in good condition. 
 
 Discharge measurements. — By wading. 
 
 Accuracy. — Excellent. 
 
 Cooperation. — Maintained in cooperation with the Waimanalo Plantation Co. 
 
 Discharge measurements of Makawao ditch near Waimanalo, Oahu, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Oct. 24 
 
 Larrison and Kea 
 
 Feet. 
 0.62 
 .64 
 .25 
 
 Sec.-ft. 
 1.81 
 
 31 
 
 G. K. Larrison 
 
 2.36 
 
 Dec. 27 
 
 Larrison and Dort .' 
 
 
 
 
 
 Daily gage height, in feet, of Makawao ditch near Waimanalo, Oahu, for 1912. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.65 
 .65 
 .65 
 .65 
 
 0.72 
 .95 
 .95 
 .91 
 .94 
 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 
 11 
 
 
 0.65 
 .65 
 .66 
 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 
 21 
 
 
 0.70 
 .73 
 
 .68 
 
 "\*70" 
 
 .69 
 .69 
 .92 
 
 .84 
 .78 
 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 Dry. 
 
 2 
 
 
 12 
 
 
 22 
 
 
 3 
 
 
 13 
 
 
 23 
 
 
 4 
 
 
 14 
 
 
 24 
 
 0.62 
 
 5 
 
 
 15 
 
 
 
 25 
 
 6 
 
 
 .65 
 .65 
 .70 
 .70 
 
 16 
 
 
 .68 
 
 26 
 
 
 7 
 
 
 17 
 
 
 27 
 
 
 8 
 
 
 
 18 
 
 
 .67 
 
 28 
 
 
 9 
 
 19 
 
 
 29 
 
 
 10 
 
 
 20 
 
 
 .67 
 
 30 
 
 
 
 
 
 
 
 31 
 
 .64 
 
 
 
 WONG LEONG DITCH NEAR WAIMANALO, OAHTJ. 
 
 Location. — Three-fourths mile east of point where road to rice mill leaves Waimanalo- 
 Honolulu road, and about 100 feet below ditch intake on the Kailua Stream. 
 
 Records available. — Gage heights and discharge measurements from November 12 
 to December 31, 1912. 
 
126 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p.m.; no change in datum. 
 
 Channel. — One at all stages; permanent. 
 
 Discharge measurements. — By wading. 
 
 Diversions. — This ditch diverts the low-water discharge of the Kailua Stream. 
 
 Accuracy. — Excellent. 
 
 Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 
 
 Discharge measurements of Wong Leong ditch near Waimanalo, Oahu, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Nov. 20 
 
 G. K. Larrison 
 
 Feet. 
 1.13 
 1.51 
 
 Sec-feet. 
 3.10 
 
 Dec. 27 
 
 
 6.48 
 
 
 
 
 Daily gage height, in feet, of Wong Leong ditch near Waimanalo, Oahu, for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.58 
 1.42 
 1.55 
 1.40 
 1.45 
 
 1.50 
 1.50 
 1.50 
 1.50 
 1.50 
 
 11 
 
 
 1.50 
 1.50 
 1.50 
 1.50 
 1.50 
 
 1.50 
 1.50 
 1.50 
 1.52 
 1.52 
 
 21 
 
 1.30 
 1.31 
 1.25 
 1.15 
 1.15 
 
 1.15 
 1.15 
 1.38 
 1.38 
 1.25 
 
 1 52 
 
 2 
 
 
 12 
 
 1.50 
 1.52 
 1.52 
 1.72 
 
 1.59 
 1.56 
 1.55 
 1.12 
 1.12 
 
 22 
 
 1 51 
 
 3 
 
 
 13 
 
 23 
 
 1.50 
 
 4 
 
 
 14 
 
 24 
 
 1.50 
 
 5 
 
 
 15 
 
 25 
 
 1.50 
 
 6 
 
 
 16 
 
 26 
 
 1.50 
 
 7 
 
 
 17 
 
 27 
 
 1.50 
 
 8 
 
 
 18 
 
 28 
 
 1-50 
 
 9 
 
 
 19.. 
 
 29 
 
 1.50 
 
 10 
 
 
 20 
 
 30 
 
 1.50 
 
 
 
 
 31 
 
 1.51 
 
 
 
 
 
 WAIMANALO DITCH BELOW RESERVOIR NEAR WAIMANALO, OAHU. 
 
 Location. — On main ditch immediately below main reservoir on the Waimanalo 
 plantation on windward Oahu, about 2 miles southwest of the plantation head- 
 quarters. Waimanalo is about 15 miles east of Honolulu. 
 
 Records available. — October 31 to December 31, 1912. 
 
 Gage. — Vertical staff on left bank immediately below reservoir; read to quarter- 
 tenths twice daily by plantation employee. 
 
 Channel. — Straight, practically permanent, and clean; bed and both banks are firm 
 clay. 
 
 Accuracy. — Excellent. 
 
 Cooperation. — Maintained in cooperation with the Waimanalo Plantation Co. 
 
 Discharge measurements of Waimanalo ditch below reservoir near Waimanalo, Oahu, 
 
 in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Oct. 31 
 
 
 Feet. 
 1.39 
 
 Sec.'feet. 
 7.38 
 
 Dec. 27 
 
 
 Dry 
 
 
 
 
 Note.— Ditch operated 11 hours per day. Dry during remainder of 24 hours. 
 
ISLAND OF OAHU. 
 
 127 
 
 Daily gage height, in feet, of Waimanalo ditch below reservoir near Waimanalo, Oahu, 
 
 .for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.32 
 1.29 
 
 ""i.16 
 
 1.40 
 1.40 
 1.40 
 
 1.40 
 1.40 
 
 ""i'.lh 
 
 11 
 
 1.41 
 1.38 
 1.34 
 1.34 
 1.38 
 
 1.32 
 
 
 21 
 
 1.35 
 1.38 
 1.32 
 
 
 2 
 
 12 
 
 22 
 
 
 3 
 
 13 
 
 28 
 
 
 4.. 
 
 1.35 
 1.36 
 
 1.32 
 1.32 
 1.26 
 1.36 
 
 14 
 
 24 
 
 
 5 
 
 15 
 
 25 
 
 1.38 
 
 1.34 
 
 1.38 
 1.32 
 1.40 
 1.40 
 
 
 6 
 
 16 
 
 26 
 
 
 7. 
 
 17 
 
 27 
 
 
 8 
 
 18 
 
 1.38 
 1.38 
 1.32 
 
 
 28 
 
 
 9 
 
 19 
 
 20 
 
 
 io!.!!" 
 
 20 
 
 30 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 PUMP DITCH NEAR WAIMANALO, OAHTT. 
 
 Location. — Below outlet pipe at pumping plant, about 1^ miles north of plantation 
 headquarters; Waimanalo plantation is about 15 miles east of Honolulu. 
 
 Records available. — November 1 to December 31, 1912. 
 
 Gage. — Vertical staff on right bank below pipe outlet; read twice daily, about 7 
 a. m. and 5 p. m., by water foreman. 
 
 Channel. — Clean, of stiff clay; permanent; one channel; banks covered with grass 
 and small weeds; does not overflow. 
 
 Discharge measurements. — By wading. 
 
 Diversions. — This ditch discharges the water pumped from the Waimanalo Lagoon. 
 
 Cooperation. — Maintained in cooperation with the Waimanalo Plantation Co. 
 
 Discharge measurements of pump ditch near Waimanalo, Oahu, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Oct. 31 
 
 
 Feet. 
 1.28 
 
 Sec.-ft. 
 2.44 
 
 Dec. 27 
 
 Larrison and Dort 
 
 
 
 
 
 
 Daily gage height, in feet, of pump ditch near Waimanalo, Oahu, for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.20 
 1.22 
 
 
 11.. 
 
 12.. 
 13.. 
 14.. 
 15.. 
 
 16.. 
 17.. 
 
 18.. 
 
 19. 
 
 20.. 
 
 
 
 
 21 
 
 
 
 2 
 
 
 1.30 
 1.28 
 1.25 
 
 
 22 
 
 
 3 
 
 
 23 
 
 
 4 .. 
 
 1.26 
 1.28 
 
 1.20 
 
 
 
 24 
 
 
 
 5. 
 
 
 25 
 
 
 
 6 
 
 
 
 
 26 
 
 
 
 7 
 
 
 
 
 27 
 
 
 
 8 
 
 
 
 
 1.19 
 1.30 
 
 
 28 
 
 
 
 9 
 
 
 
 
 29 
 
 
 
 10 
 
 
 
 
 30 
 
 
 
 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 Note. — Pump working 12 hours per day; balance of 24 hours ditch was dry. 
 
128 WATER RESOURCES OF HAWAII, 1912. 
 
 MISCELLANEOUS MEASUREMENTS ON OAHU IN 1912. 
 
 Date. 
 
 Stream. 
 
 Tributary to— 
 
 Locality. 
 
 Dis- 
 charge. 
 
 Aug. 27 
 27 
 
 Kahuawai Spring 
 
 do 
 
 Pauoa Stream 
 
 Pauoa Valley 
 
 Sec.-ft. 
 0.75 
 
 do 
 
 do 
 
 .83 
 
 Feb. 29 
 
 Pukele Stream 
 
 Palolo Stream 
 
 Below Mahoe Springs, Upper 
 
 Palolo Valley. 
 
 Irwins Flume, Kailua Valley 
 
 Below intake Wong Leong ditch, 
 
 Kailua Valley. 
 Flume below intake Kailua Valley. 
 Kailua Valley 
 
 .80 
 
 Apr. 5 
 5 
 
 Makawao ditch 
 
 (a) 
 
 3.49 
 
 
 
 2 21 
 
 5 
 
 Wong Leong ditch 
 
 Box Flume ditch 
 
 KahanaiM Stream 
 
 Waikalua ditch 
 
 (6) 
 
 4.86 
 
 5 
 
 \4 
 
 .61 
 
 5 
 
 
 Government road bridge, Kailua 
 Valley. 
 
 Above box flume, Kaneohe 
 
 Ah T/dflnitifi, TTanenhe, 
 
 .93 
 
 Mar 9 
 
 
 2.62 
 
 9 
 
 do 
 
 do 
 
 do 
 
 
 6.78 
 
 9 
 9 
 
 do 
 
 Sugar mill, Kaneohe 
 
 8.29 
 10.6 
 
 g 
 
 Old Waikalua ditch 
 
 
 50 feet below intake, Kaneohe 
 
 60 feet below Government road, 
 
 Kaneohe. 
 200 feet below Government road, 
 
 Kaneohe. 
 Below rice mill, Kaneohe 
 
 1.28 
 
 9 
 
 Kepo ditch 
 
 
 2.56 
 
 9 
 
 do 
 
 
 2.66 
 
 9 
 
 Waste ditch... 
 
 
 .93 
 
 Nov 3 
 
 
 
 Intake, Kaneohe 
 
 6 81 
 
 7 
 
 .do 
 
 
 dol 
 
 6 87 
 
 Aug. 3 
 May 24 
 
 24 
 
 Waihi Stream 
 
 Waiahole Stream 
 
 Halona Stream 
 
 Upper Waiahole Valley 
 
 9.40 
 
 North Fork, Halona 
 
 Stream. 
 Halona Stream 
 
 do 
 
 .76 
 
 Waiahole Stream 
 
 do 
 
 Wainu Stream 
 
 Waiahole Stream 
 
 do.... 
 
 do 
 
 do 
 
 do 
 
 5.15 
 
 Aug. 3 
 
 do 
 
 4.35 
 .58 
 
 4 
 
 Waianu Stream 
 
 9.13 
 
 May 24 
 
 McCandless ditch 
 
 (d) 
 
 Waiahole Valley 
 
 1.30 
 
 
 
 
 a Diverts low-water discharge of headwaters of Makawao and Kaimi streams. 
 
 b Diverts low-water discharge of Kailua Stream. 
 
 c Diverts low-water discharge of Kawainui Stream. 
 
 d Diverts part of low-water discharge of Waiahole Stream. 
 
 ARTESIAN WELLS. 
 
 Artesian wells play an important part in connection with the water 
 supply of Honolulu and the irrigation of sugar cane. 
 
 Records have been kept, more or less continuously, of the heads 
 of Oahu wells for the past 30 years. During this period the mean 
 yearly head has dropped about 15 feet. During the past dry year 
 the heads on the wells dropped so low that many wells became 
 seriously impregnated with salt, and the supply was reduced to an 
 alarming degree! However, this condition brought to the attention 
 of the Territorial officials the great waste that has been going on for 
 years from this source of supply. Mr. T. F. Sedgwick, who has been 
 making an investigation of the Oahu artesian wells, reports that the 
 entire supply from this source for the city of Honolulu from Diamond 
 Head to Fort Shafter amounted in 1912 to about 55 second-feet, 
 and of this about one-third was allowed to waste into the sea. The 
 following table shows the monthly fluctuation of the wells under 
 investigation during 1912: 
 
ISLAND OF MAUI. 129 
 
 Height of water {elevation in feet above sea level) in artesian wells on Oahu in 1912. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 The year. 
 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 
 Station. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Max. 
 
 Min. 
 
 Government 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 stables 
 
 31.30 
 
 30.91 
 
 31.00 
 
 30.66 
 
 30.10 
 
 29.45 
 
 28.80 
 
 28.65 
 
 28.17 
 
 28.10 
 
 28.22 
 
 28.50 
 
 31.30 
 
 28.10 
 
 Mo Hop 
 
 Lund Do Wai. 
 
 26.20 
 
 24.95 
 
 25.38 
 
 25.14 
 
 24. 03 
 
 24.10 
 
 24.65 
 
 23.47 
 
 22.99 
 
 23.06 
 
 24.51 
 
 25.71 
 
 26.20 
 
 22.99 
 
 26.10 
 
 24.65 
 
 25.20 
 
 24.98 
 
 23.85 
 
 23.92 
 
 24.41 
 
 23.15 
 
 22.70 
 
 22.80 
 
 24.35 
 
 25.65 
 
 26.10 
 
 22.70 
 
 Sing Loy 
 
 Oahu Railway 
 & Land Co.. 
 
 31.85 
 
 31.45 
 
 31.60 
 
 31.16 
 
 30.61 
 
 29.85 
 
 29.25 
 
 28.98 
 
 28.50 
 
 28.40 
 
 28.65 
 
 29.24 
 
 31.85 
 
 28.40 
 
 31.90 
 
 32.20 
 
 32.10 
 
 31.44 
 
 31.00 
 
 30.42 
 
 29.47 
 
 29.52 
 
 29.22 
 
 28.82 
 
 29.04 
 
 29.57 
 
 32.20 
 
 28.82 
 
 Ah Yin 
 
 31.03 
 
 30.91 
 
 30.87 
 
 30.64 
 
 29.96 
 
 29.11 
 
 28.81 
 
 28.35 
 
 28.11 
 
 27.70 
 
 28.16 
 
 28.75 
 
 31.03 
 
 27.70 
 
 Young Hotel 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Gardens 
 
 29.68 
 
 28.95 
 
 28.73 
 
 29.18 
 
 28.78 
 
 28.29 
 
 27.38 
 
 27.33 
 
 27.13 
 
 27.18 
 
 27.53 
 
 28.27 
 
 29.68 
 
 27.13 
 
 Mr. Damon's.. 
 
 27.42 
 
 27.42 
 
 27.60 
 
 27.38 
 
 26.46 
 
 25.96 
 
 25.62 
 
 25.25 
 
 25.16 
 
 24.88 
 
 25.34 
 
 26.17 
 
 27.60 
 
 24.88 
 
 Waimalu 
 
 22.75 
 
 22.37 
 
 22.47 
 
 22.42 
 
 21.08 
 
 20.53 
 
 20.22 
 
 19.92 
 
 19.62 
 
 19.95 
 
 20.92 
 
 21.22 
 
 22.75 
 
 19.62 
 
 SingChong.... 
 Waipahu 
 
 19.25 
 
 19.55 
 
 19. 45 
 
 19.20 
 
 18.10 
 
 18.19 
 
 17.45 
 
 17.15 
 
 16.95 
 
 16.90 
 
 17.10 
 
 18.49 
 
 19.55 
 
 16.90 
 
 20.67 
 
 21.80 
 
 21.22 
 
 20.42 
 
 19.35 
 
 18.60 
 
 18.22 
 
 18.12 
 
 17.92 
 
 17.63 
 
 18.12 
 
 19.22 
 
 21.80 
 
 17.63 
 
 Honouliuli 
 
 22.27 
 
 22.30 
 
 22.29 
 
 21.89 
 
 20.84 
 
 20.18 
 
 19.79 
 
 19.36 
 
 19.02 
 
 18.89 
 
 19.65 
 
 20.89 
 
 22.30 
 
 18.89 
 
 Waialua 
 
 12.52 
 
 12. 47 
 
 12.42 
 
 12.14 
 
 12.02 
 
 11.97 
 
 11.72 
 
 11.62 
 
 11.46 
 
 11.45 
 
 11.67 
 
 12.12 
 
 12.52 
 
 11.45 
 
 Kahukua 
 
 1.66 
 
 1.62 
 
 1.23 
 
 1.46 
 
 .51 
 
 .62 
 
 .54 
 
 .56 
 
 .29 
 
 .61 
 
 .96 
 
 1.00 
 
 1.66 
 
 .29 
 
 Hauula 
 
 21.27 
 
 21.15 
 
 20.80 
 
 20.96 
 
 20.37 
 
 19.96 
 
 19.37 
 
 20.08 
 
 19.57 
 
 
 
 19.76 
 
 20.20 
 
 
 
 
 Oahu College &. 
 
 /31. 65 
 \31. 55 
 
 31.50 
 
 31.60 
 
 31.40 
 
 30.90 
 
 30.38 
 
 29.70 
 
 29.25 
 
 28.90 
 
 *28.'40 
 
 28.52 
 
 29.25 
 
 hi. 65 
 
 28.25 
 
 31.40 
 
 31.50 
 
 31.03 
 
 30.50 
 
 29.70 
 
 29.35 
 
 28.92 
 
 28.47 
 
 28.25 
 
 28.25 
 
 28.52 
 
 Beretania 
 
 /31. 66 
 \31.41 
 
 31.52 
 
 31. 56 
 
 31.39 
 
 30.83 
 
 30.43 
 
 29.68 
 
 29.31 
 
 28.98 
 
 J28.33 
 
 /28. 54 
 \28.44 
 
 29. 12 
 
 J31. 66 
 
 28.33 
 
 street pump t> 
 
 31.37 
 
 31.43 
 
 31.00 
 
 30.43 
 
 29.79 
 
 29.27 
 
 28.96 
 
 28. 8^ 
 
 28.65 
 
 a B. M. unsatisfactory; height taken above flange on well. & Maximum and minimum for month. 
 
 ISLAND OF MAUI. 
 
 West Maui. 
 
 KAHAKULOA STREAM BASIN. 
 
 KAHAKULOA STREAM AT KAHAKULOA, NEAR WAIHEE, MAUI. 
 
 Location. — About 13 miles northwest of Wailuku at trail bridge of Kahakuloa, 
 
 below all diversions. 
 Records available. — August 27 to December 31, 1912. 
 Drainage area. — Not measured. 
 Gage. — Staff; datum unchanged. 
 Channel. — Probably permanent. 
 Discharge measurements. — Made by wading. 
 Accuracy. — Good . 
 
 Discharge measurements of Kahakuloa Stream at Kahakuloa, near Waihee, Maui, in 1912. 
 
 [Hydrographer, J. B. Stewart.] 
 
 Date. 
 
 Gage 
 
 Dis- 
 
 Date. 
 
 Gage 
 
 Dis- 
 
 height. 
 
 charge. 
 
 height. 
 
 charge. 
 
 
 Feet. 
 
 Sec.-ft. 
 
 
 Feet. 
 
 Sec.-ft. 
 
 Aug. 13 
 
 0.82 
 
 13.4 
 
 Oct. 1 
 
 0.75 
 
 10.0 
 
 15 
 
 1.10 
 
 25.5 
 
 4 
 
 .90 
 
 14.1 
 
 28 
 
 .60 
 
 5.25 
 
 30 
 
 1.40 
 
 47.7 
 
 Sept. 14 
 
 .60 
 
 4.08 
 
 - 
 
 
 
 14694°— wsp 336—14 9 
 
130 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Kahahuloa Stream at Kahdkuloa, near Waihee, Maui, for 1912. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.65 
 .95 
 .70 
 .62 
 .60 
 
 .65 
 .78 
 .68 
 
 .60 
 
 0.78 
 
 1.05 
 
 .78 
 
 .62 
 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 .62 
 
 .68 
 
 .83 
 
 1.15 
 
 1.12 
 
 1.52 
 
 0.72 
 .68 
 .70 
 .65 
 .60 
 
 .60 
 .60 
 .60 
 
 1.78 
 .75 
 
 .65 
 .58 
 .58 
 .60 
 .62 
 
 1.00 
 
 .72 
 
 1.45 
 
 .75 
 
 .68 
 
 .65 
 .95 
 .80 
 
 .78 
 .68 
 
 .60 
 .60 
 .60 
 
 .65 
 .60 
 
 16 
 
 
 0.55 
 
 .55 
 .55 
 .55 
 .60 
 
 .60 
 .58 
 .58 
 .55 
 .55 
 
 .55 
 .55 
 .60 
 .70 
 
 .88 
 
 0.78 
 .65 
 .60 
 .60 
 .60 
 
 .82 
 1.02 
 .85 
 .68 
 .65 
 
 .70 
 .70 
 1.08 
 .70 
 .80 
 .88 
 
 1.58 
 
 1.05 
 
 .90 
 
 .82 
 
 .82 
 
 .95 
 .85 
 .78 
 .70 
 .62 
 
 .68 
 .65 
 .60 
 .60 
 .95 
 
 0.88 
 
 2 
 
 
 17 
 
 
 .62 
 
 3 
 
 
 18 
 
 
 .60 
 
 4 
 
 
 19 
 
 
 .62 
 
 5 
 
 
 20 
 
 
 .62 
 
 6 
 
 
 21 
 
 
 .60 
 
 7 
 
 
 22 
 
 
 1.12 
 
 8 
 
 
 23 
 
 
 .75 
 
 9. .. 
 
 
 24. . 
 
 
 .68 
 
 10 
 
 
 .60 
 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 
 25 
 
 
 .65 
 
 11 
 
 
 26 
 
 
 .60 
 
 12 
 
 
 27 
 
 0.60 
 .60 
 .68 
 .65 
 .65 
 
 .60 
 
 13 
 
 
 28 , 
 
 .60 
 
 14 
 
 
 29 
 
 .68 
 
 15 
 
 
 30 
 
 .68 
 
 
 
 31 
 
 .60 
 
 
 
 
 Daily discharge, in second-feet, of Kahahuloa Stream at Kahahuloa, near Waihee, Maui, 
 
 for 1912. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 6.5 
 17.5 
 8.0 
 5.6 
 5.0 
 
 6.5 
 10.4 
 7.4 
 5.0 
 5.0 
 
 5.0 
 5.0 
 5.0 
 5.0 
 5.0 
 
 10.4 
 
 23.0 
 
 10.4 
 
 5.6 
 
 5.0 
 
 5.0 
 5.0 
 5.0 
 5.0 
 5.6 
 
 7.4 
 12.2 
 29.0 
 27.2 
 56.6 
 
 8.6 
 7.4 
 8.0 
 6.5 
 5.0 
 
 5.0 
 5.0 
 5.0 
 77.4 
 9.5 
 
 6.5 
 4.6 
 4.6 
 5.0 
 5.6 
 
 20.0 
 
 8.6 
 
 51.0 
 
 9.5 
 
 7.4 
 
 6.5 
 17.5 
 11.0 
 10.4 
 
 7.4 
 
 5.0 
 5.0 
 5.0 
 
 6.5 
 5.0 
 
 16 
 
 
 4.0 
 4.0 
 4.0 
 4.0 
 5.0 
 
 5.0 
 4.6 
 4.6 
 4.0 
 4.0 
 
 4.0 
 4.0 
 5.0 
 8.0 
 14.2 
 
 10.4 
 6.5 
 5.0 
 5.0 
 5.0 
 
 11.8 
 21.2 
 13.0 
 7.4 
 6.5 
 
 8.0 
 8.0 
 24.8 
 8.0 
 11.0 
 14.2 
 
 61.4 
 23.0 
 15.0 
 11.8 
 11.8 
 
 17.5 
 13.0 
 10.4 
 8.0 
 5.6 
 
 7.4 
 6.5 
 5.0 
 5.0 
 17.5 
 
 14.2 
 
 2 
 
 
 17 
 
 
 5.6 
 
 3 
 
 
 18 
 
 
 5.0 
 
 4 
 
 
 19 
 
 
 5.6 
 
 5 
 
 
 20 
 
 
 5.6 
 
 6 
 
 
 21 
 
 
 5.0 
 
 7 
 
 
 22 
 
 
 27.2 
 
 8 
 
 
 23 * 
 
 
 9.5 
 
 9 
 
 
 24 
 
 
 7.4 
 
 10 
 
 
 25 
 
 
 6.5 
 
 11 
 
 
 26 
 
 
 5.0 
 
 12 
 
 
 27 
 
 5.0 
 5.0 
 7.4 
 6.5 
 6.5 
 
 5.0 
 
 13 
 
 
 28 
 
 5.0 
 
 14 
 
 
 29 
 
 7.4 
 
 15 
 
 
 30 
 
 7.4 
 
 
 
 31 
 
 £.0 
 
 
 
 
 Monthly discharge of Kahahuloa Stream at Kahahuloa, near Waihee, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 August 
 
 7.4 
 17.5 
 
 56.6 
 77.4 
 51.0 
 
 5.0 
 4.0 
 5.0 
 4.6 
 5.0 
 
 6.08 
 6.01 
 12.20 
 12.70 
 9.75 
 
 60.3 
 358.0 
 750.0 
 756.0 
 600.0 
 
 B. 
 
 
 B. 
 
 October 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 
 The period 
 
 
 
 
 2,520.0 
 
 
 
 
 
 
 
 WAIHEE STREAM BASIN. 
 WAIHEE STREAM AT DAM NEAR WAIHEE, MAUI. 
 
 Location. — About 2 J miles west of Waihee at intake of Waihee canal. 
 Records available. — November 17, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily; datum unchanged. 
 Channel. — Crest of concrete diversion dam. 
 
ISLAND OF MAUI. 
 
 131 
 
 Discharge measurements. — Made by wading and from footbridge. To get total 
 flow of Waihee Stream add flow of Waihee canal to discharge at this station. 
 
 Accuracy. — Records at this point show amount of water passing over the diversion 
 dam and do not include flow in Waihee canal. 
 
 The following discharge measurement was made by C. T. Bailey: 
 December 1, 1912: Gage height, 0.49 foot; discharge, 59.2 second-feet. 
 
 Daily gage height, in feet, of Waihee Stream at dam near Waihee, Maui, for 1912, 
 [Joaquin Santos, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug, 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 0.20 
 
 0.00 
 
 0.15 
 
 0.50 
 
 0.60 
 
 0.20 
 
 
 
 
 
 
 
 0.35 
 
 
 
 .20 
 
 .0 
 
 .70 
 
 .70 
 
 .40 
 
 .20 
 
 0.05 
 
 
 
 0.30 
 
 
 
 
 
 .10 
 
 .0 
 
 .25 
 
 .60 
 
 .40 
 
 .15 
 
 .05 
 
 
 
 
 
 .55 
 
 
 
 .00 
 
 .0 
 
 .40 
 
 1.55 
 
 .30 
 
 .15 
 
 .10 
 
 
 
 
 
 .50 
 
 
 
 .00 
 
 .0 
 
 .50 
 
 2.20 
 
 .50 
 
 .20 
 
 .30 
 
 
 
 
 
 
 
 
 
 .00 
 
 .0 
 
 .35 
 
 1.15 
 
 .70 
 
 .10 
 
 
 
 
 
 
 
 
 
 
 
 .00 
 
 .0 
 
 .60 
 
 1.30 
 
 .20 
 
 .25 
 
 .15 
 
 
 
 .30 
 
 
 
 
 
 .00 
 
 .0 
 
 .50 
 
 .60 
 
 .30 
 
 .15 
 
 .30 
 
 
 
 
 
 
 
 
 
 .10 
 
 .0 
 
 .40 
 
 .60 
 
 .20 
 
 .10 
 
 1.20 
 
 .20 
 
 
 
 
 
 1.10 
 
 .15 
 
 .0 
 
 .35 
 
 .70 
 
 .20 
 
 .10 
 
 2.15 
 
 
 
 
 
 
 
 
 
 .10 
 
 .0 
 
 .40 
 
 1.50 
 
 .20 
 
 1.00 
 
 1.10 
 
 .20 
 
 
 
 .40 
 
 
 
 .00 
 
 .0 
 
 .40 
 
 .70 
 
 .15 
 
 .70 
 
 .90 
 
 .20 
 
 
 
 .55 
 
 
 
 .00 
 
 .40 
 
 .40 
 
 .35 
 
 .05 
 
 .70 
 
 .85 
 
 .25 
 
 
 
 .12 
 
 
 
 .00 
 
 .10 
 
 .20 
 
 .50 
 
 .00 
 
 .40 
 
 .50 
 
 .40 
 
 
 
 .15 
 
 
 
 .00 
 
 .10 
 
 .20 
 
 .50 
 
 .00 
 
 .30 
 
 
 
 .50 
 
 
 
 .40 
 
 .50 
 
 .00 
 
 .10 
 
 .50 
 
 .70 
 
 .00 
 
 .70 
 
 .25 
 
 .40 
 
 
 
 .00 
 
 1.50 
 
 .0 
 
 .10 
 
 1.55 
 
 .70 
 
 .0 
 
 .40 
 
 
 
 
 
 
 
 
 
 .70 
 
 .0 
 
 .20 
 
 1.60 
 
 .75 
 
 .0 
 
 .30 
 
 
 
 
 
 
 
 
 
 1.25 
 
 .0 
 
 1.00 
 
 1.20 
 
 .85 
 
 .05 
 
 .50 
 
 
 
 
 
 
 
 
 
 
 
 .0 
 
 .70 
 
 1.10 
 
 .50 
 
 .0 
 
 .10 
 
 
 
 
 
 
 
 
 
 .60 
 
 .0 
 
 .60 
 
 .80 
 
 .50 
 
 .0 
 
 .15 
 
 .25 
 
 .40 
 
 
 
 .60 
 
 .85 
 
 .0 
 
 .70 
 
 .85 
 
 .60 
 
 .0 
 
 .20 
 
 
 
 .40 
 
 
 
 .40 
 
 
 
 .0 
 
 .70 
 
 .75 
 
 .50 
 
 .05 
 
 .20 
 
 
 
 
 
 
 
 
 
 .20 
 
 .0 
 
 .65 
 
 .60 
 
 .40 
 
 .05 
 
 .20 
 
 .10 
 
 
 
 
 
 
 
 .50 
 
 .0 
 
 .60 
 
 .50 
 
 .40 
 
 .0 
 
 .20 
 
 
 
 
 
 
 
 
 
 .25 
 
 .0 
 
 .60 
 
 .10 
 
 .60 
 
 .15 
 
 .10 
 
 
 
 .60 
 
 
 
 
 
 .25 
 
 .0 
 
 .50 
 
 .30 
 
 .50 
 
 .85 
 
 .10 
 
 
 
 
 
 
 
 .05 
 
 .25 
 
 .0 
 
 .20 
 
 .60 
 
 .50 
 
 .65 
 
 
 
 
 
 
 
 
 
 .25 
 
 .25 
 
 .0 
 
 .10 
 
 .40 
 
 .40 
 
 .50 
 
 
 
 
 
 
 
 
 
 
 
 .25 
 
 .0 
 
 
 .50 
 
 .40 
 
 .40 
 
 
 
 
 
 
 
 
 
 
 
 .45 
 
 .0 
 
 
 .50 
 
 
 .25 
 
 
 
 
 
 
 
 .22 
 
 
 Dec. 
 
 1 
 2 
 3 
 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 
 15 
 
 16 
 
 17 
 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 0.55 
 .40 
 
 1.20 
 
 
 
 .35 
 
 .40 
 
 
 
 
 
 
 
 
 
 
 
 
 
 .40 
 
 
 .45 
 
 
 
 
 
 .10 
 
 
 
 
 
 
 .55 
 .05 
 .20 
 .05 
 
 Daily discharge, in second-feet, of Waihee Stream at dam near Waihee, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 12.0 
 
 
 
 8.3 
 
 53.0 
 
 71.0 
 
 12.0 
 
 
 
 
 
 
 
 29.0 
 
 
 
 12.0 
 
 
 
 90.0 
 
 90.0 
 
 36.0 
 
 12.0 
 
 2.3 
 
 
 
 22. 
 
 
 
 
 
 4.6 
 
 
 
 17.0 
 
 71.0 
 
 36.0 
 
 8.3 
 
 2.3 
 
 
 
 
 
 62.0 
 
 
 
 
 
 
 
 36.0 
 
 275.0 
 
 22.0 
 
 8.3 
 
 4.6 
 
 
 
 
 
 53.0 
 
 
 
 
 
 
 
 53.0 
 
 435.0 
 
 53.0 
 
 12.0 
 
 22.0 
 
 
 
 
 
 
 
 
 
 
 
 
 
 29.0 
 
 184.0 
 
 90.0 
 
 4.6 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 71.0 
 
 217.0 
 
 12.0 
 
 17.0 
 
 8.3 
 
 
 
 22. 
 
 
 
 
 
 
 
 
 
 53.0 
 
 71.0 
 
 22.0 
 
 8.3 
 
 22.0 
 
 
 
 
 
 
 
 
 
 4.6 
 
 
 
 36.0 
 
 71.0 
 
 12.0 
 
 4.6 
 
 195.0 
 
 12.0 
 
 
 
 
 
 173.0 
 
 8.3 
 
 
 
 29.0 
 
 90.0 
 
 12.0 
 
 4.6 
 
 422.0 
 
 
 
 
 
 
 
 
 
 4.6 
 
 
 
 36.0 
 
 263.0 
 
 12.0 
 
 152.0 
 
 173.0 
 
 12.0 
 
 
 
 36.0 
 
 
 
 
 
 
 
 36.0 
 
 90.0 
 
 8.3 
 
 90.0 
 
 131,0 
 
 12.0 
 
 
 
 62.0 
 
 
 
 
 
 36.0 
 
 36.0 
 
 29.0 
 
 2.3 
 
 90.0 
 
 120.0 
 
 17.0 
 
 
 
 6.1 
 
 
 
 
 
 4.6 
 
 12.0 
 
 53.0 
 
 
 
 36.0 
 
 53.0 
 
 36.0 
 
 
 
 8.3 
 
 
 
 
 
 4.6 
 
 12.0 
 
 53.0 
 
 
 
 22.0 
 
 
 
 53.0 
 
 
 
 36.0 
 
 53.0 
 
 
 
 4.6 
 
 53.0 
 
 90.0 
 
 
 
 90.0 
 
 17.0 
 
 36.0 
 
 
 
 
 
 263.0 
 
 
 
 4.6 
 
 275.0 
 
 90.0 
 
 
 
 36.0 
 
 
 
 
 
 
 
 
 
 90.0 
 
 
 
 12.0 
 
 287.0 
 
 100.0 
 
 
 
 22.0 
 
 
 
 
 
 
 
 
 
 206.0 
 
 
 
 152.0 
 
 195.0 
 
 120.0 
 
 2.3 
 
 53.0 
 
 
 
 
 
 
 
 
 
 
 
 
 
 90.0 
 
 173.0 
 
 53.0 
 
 
 
 4,6 
 
 
 
 
 
 
 
 
 
 71.0 
 
 Dec. 
 
 1 
 
 2 
 3 
 
 4 
 
 5. 
 
 6 
 
 7. 
 8 
 9 
 10, 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 
 17, 
 18 
 19 
 
 62.0 
 
 36.0 
 
 195.0 
 
 
 
 
 
 29.0 
 36.0 
 
 36.0 
 
 
 44.5 
 
 
 
132 
 
 Daily discharge, in second-feet, of Waihee Stream at dam near Waihee, Maui, for 1912 — 
 
 Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 71.0 
 90.0 
 90.0 
 80.5 
 71.0 
 
 71.0 
 
 53.0 
 
 12.0 
 
 4.6 
 
 110.0 
 
 120.0 
 
 100.0 
 
 71.0 
 
 53.0 
 
 4.6 
 22.0 
 71.0 
 36.0 
 53.0 
 53.0 
 
 53.0 
 71.0 
 53.0 
 36.0 
 36.0 
 
 71.0 
 53.0 
 53.0 
 36.0 
 36.0 
 
 
 
 
 
 2.3 
 
 2.3 
 
 
 
 8.3 
 
 120.0 
 80.5 
 53.0 
 36.0 
 17.0 
 
 8.3 
 12.0 
 12.0 
 12.0 
 12.0 
 
 17.0 
 
 
 
 
 
 4.6 
 
 
 
 
 
 
 
 
 
 
 71.0 
 
 
 
 
 
 
 71.0 
 
 36.0 
 
 
 
 
 
 
 
 
 2.3 
 
 17.0 
 
 
 
 14.0 
 
 120.0 
 
 
 
 12.0 
 
 53.0 
 
 17.0 
 
 17.0 
 
 17.0 
 17.0 
 17.0 
 44.5 
 
 
 
 4.6 
 
 
 
 
 
 
 
 62.0 
 
 2.3 
 
 12.0 
 
 2.3 
 
 Monthly discharge of Waihee Stream at dam near Waihee, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 12.0 
 
 152.0 
 
 287.0 
 
 435.0 
 
 120.0 
 
 152.0 
 
 422.0 
 
 71.0 
 
 22.0 
 
 71.0 
 
 263.0 
 
 195.0 
 
 435.0 
 
 0.0 
 .0 
 
 4.6 
 29.0 
 .0 
 .0 
 .0 
 .0 
 .0 
 .0 
 .0 
 .0 
 
 1.49 
 29.40 
 72.00 
 99.90 
 22.90 
 25.10 
 38.50 
 10.40 
 
 1.47 
 14.00 
 39.00 
 16.80 
 
 30 J 
 
 91.6 
 1,690.0 
 4,430.0 
 5,940.0 
 1,410.0 
 1,490.0 
 2,370.0 
 
 640.0 
 87.5 
 
 861.0 
 2,320.0 
 1,030.0 
 
 22,400 
 
 WAIHEE CANAL NEAR WAIHEE, MATTI. 
 
 Location. — About 2 miles west of Waihee and one-half mile below canal intake; 5$ 
 
 miles above Wailuku. 
 Records available. — November 17, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m.; datum unchanged. 
 Channel. — Cement lined. 
 Discharge measurements. — Made from plank at gage. Gage read with diversion 
 
 gate shut. 
 
 Discharge measurements of Waihee canal near Waihee, Maui, in 1912. 
 [Hydrographer, J. B. Stewart.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 1 
 height. 
 
 Dis- 
 charge. 
 
 March 7 
 
 Feet. 
 1.85 
 2.15 
 1.82 
 
 Sec-ft. 
 41.6 
 55.7 
 45.6 
 
 September 7 
 
 Feet. 
 1.85 
 1.60 
 
 Sec-ft. 
 52 A 
 
 July 3 
 
 October 29 
 
 41.4 
 
 August 6 
 
 
 
 
 
ISLAHD OF MAUI. 
 
 133 
 
 Daily gage height, in feet, of Waihee canal near Waihee, Maui, for 1912. 
 [Joaquin Santos, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 
 2.20 
 
 2.20 
 2.20 
 2.15 
 2.10 
 
 2.10 
 2.10 
 2.10 
 2.10 
 2.10 
 
 2.10 
 2.10 
 2.10 
 2.10 
 2.10 
 
 2.10 
 2.10 
 2.10 
 2.10 
 2.10 
 
 2.10 
 
 2.10 
 2.10 
 2.00 
 2.00 
 
 2.00 
 2.00 
 1.90 
 1.90 
 1.90 
 1.90 
 
 1.90 
 1.90 
 1.90 
 1.90 
 1.90 
 
 1.90 
 1.90 
 1.90 
 1.90 
 1.90 
 
 1.90 
 
 1.90 
 2.20 
 2.20 
 2.20 
 
 2.20 
 2.20 
 2.20 
 2.20 
 2.20 
 
 2.20 
 2.20 
 2.60 
 2.60 
 2.40 
 
 2.40 
 2.20 
 2.20 
 2.20 
 
 2.20 
 2.20 
 2.20 
 2.15 
 2.15 
 
 2.20 
 2.20 
 2.40 
 2.40 
 2.40 
 
 2.30 
 2.20 
 2.20 
 2.20 
 2.40 
 
 2.30 
 2.30 
 2.20 
 2.15 
 2.15 
 
 2.10 
 2.20 
 2.20 
 2.20 
 2.15 
 
 2.10 
 2.10 
 2.10 
 2.10 
 2.05 
 2.10 
 
 2.30 
 2.15 
 2.20 
 2.20 
 2.20 
 
 2.20 
 2.20 
 2.20 
 2.20 
 2.30 
 
 2.20 
 2.15 
 2.15 
 2.15 
 2.10 
 
 2.50 
 2.50 
 2.40 
 2.30 
 2.30 
 
 2.20 
 
 2.20 
 2.30 
 2.30 
 2.10 
 
 2.20 
 2.20 
 2.30 
 2.20 
 2.20 
 
 2.15 
 2.20 
 2.50 
 2.40 
 2.55 
 
 2.30 
 2.15 
 2.20 
 2.20 
 2.10 
 
 2.00 
 2.00 
 1.90 
 1. 95 
 1.90 
 
 1.90 
 1.90 
 1.90 
 1.90 
 1.90 
 
 1.90 
 2.05 
 2.10 
 2.15 
 1.95 
 
 2.05 
 2.10 
 2.65 
 2.40 
 2.30 
 2.40 
 
 2.10 
 2.10 
 2.10 
 2.10 
 2.10 
 
 2.10 
 2.10 
 2.10 
 2.10 
 2.10 
 
 2.40 
 2.40 
 2.50 
 2.50 
 2.50 
 
 2.40 
 2.20 
 2.20 
 2.10 
 2.05 
 
 2.10 
 2.10 
 2.10 
 2.15 
 2.20 
 
 2.20 
 2.15 
 2.25 
 2.15 
 2.15 
 
 2.10 
 2.15 
 2.20 
 2.20 
 2.25 
 
 2.25 
 2.25 
 2.25 
 2.40 
 2.30 
 
 2.40 
 2.40 
 2.40 
 2.40 
 2.05 
 
 2.15 
 2.00 
 2.00 
 2.05 
 1.95 
 
 2.25 
 
 2.05 
 1.90 
 2.15 
 1.90 
 
 1.90 
 2.05 
 1.80 
 1.90 
 1.80 
 1.80 
 
 1.80 
 1.80 
 1.80 
 1.80 
 1.90 
 
 1.80 
 1.80 
 1.80 
 2.20 
 1.95 
 
 2.25 
 2.30 
 2.40 
 2.25 
 2.30 
 
 2.35 
 2.05 
 2.00 
 1.85 
 1.80 
 
 0.00 
 2.20 
 
 1.80 
 1.85 
 1.85 
 
 2.05 
 1.70 
 1.75 
 1.90 
 1.85 
 1.70 
 
 1.70 
 2.30 
 1.70 
 1.70 
 1.85 
 
 1.70 
 1.95 
 1.70 
 1.65 
 1.65 
 
 1.40 
 1.60 
 1.60 
 1.60 
 1.60 
 
 1.60 
 1.60 
 1.70 
 1.80 
 1.70 
 
 1.60 
 1.60 
 1.60 
 1.65 
 1.65 
 
 1.75 
 1.65 
 1.85 
 1.80 
 1.60 
 
 2.00 
 1.75 
 2.00 
 2.10 
 1.75 
 
 1.60 
 1.65 
 1.60 
 1.70 
 1.65 
 
 2.05 
 1.95 
 2.15 
 2.00 
 2.10 
 
 1.75 
 1.95 
 1.85 
 1.65 
 1.60 
 
 2.15 
 
 2.25 
 2.15 
 1.80 
 1.65 
 
 1.95 
 
 2.10 
 2.00 
 1.60 
 1.60 
 
 1.65 
 1.60 
 1.60 
 1.70 
 1.60 
 
 1.60 
 1.60 
 1.75 
 2.30 
 1.85 
 
 1.65 
 1.60 
 1.55 
 1.50 
 1.85 
 
 2.30 
 2.25 
 1.10 
 1.90 
 2.25 
 
 2.30 
 
 2.10 
 
 2.20 
 
 .00 
 
 .85 
 
 .80 
 .80 
 .80 
 .80 
 2.00 
 
 
 2 
 
 6.85 
 
 3 
 
 1.80 
 
 4 
 
 1.70 
 
 5 
 
 1.70 
 
 6 
 
 2.00 
 
 7. 
 
 2.10 
 
 8 
 
 1.65 
 
 9 
 
 1.60 
 
 10 
 
 1.60 
 
 11 
 
 1.60 
 
 12 
 
 1.60 
 
 13 
 
 1.60 
 
 14 
 
 1.60 
 
 15 
 
 1.60 
 
 16 
 
 1.95 
 
 
 1.60 
 
 18 
 
 1.75 
 
 
 1.85 
 
 20 
 
 1.70 
 
 21 
 
 1.70 
 
 
 1.60 
 
 23 
 
 1.90 
 
 24 
 
 1.60 
 
 25 
 
 1.80 
 
 26 
 
 1.70 
 
 
 1.60 
 
 28 
 
 1.90 
 
 
 1.80 
 
 30 
 
 2.00 
 
 
 1.80 
 
 
 
 
 
 
 Note. — On July 27 a small board was substituted for a larger one in the canal below the gage; gage height 
 of 1.7, beginning July 27, equivalent to 1.8 before that date. 
 
 WAIHEE CANAL AT WEIR NEAR WAILUKU, MAUI. 
 
 Location. — About half a mile above Wailuku and about 1,000 feet below the inverted 
 
 siphon crossing Iao Valley. 
 Records available. — January 1, 1911, to December 31, 1912. 
 Discharge. — Measured by 14-foot sharp-crested weir, without end contractions. 
 Cooperation. — Records furnished by Hawaiian Commercial & Sugar Co. 
 
 Daily discharge, in million gallons, of Waihee canal at weir near Wailuku, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 2. 
 3. 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 19.80 
 16.80 
 16.10 
 15.10 
 14.30 
 
 13.40 
 14.60 
 18.40 
 16.40 
 15.50 
 
 15.40 
 13.30 
 13.70 
 14.40 
 14.80 
 
 11.40 
 12.90 
 17.40 
 14.40 
 13.70 
 
 12.70 
 12.50 
 11.70 
 11.60 
 10.60 
 
 13.00 
 11.50 
 23.30 
 18.30 
 12.40 
 
 19.30 
 19.00 
 21.40 
 17.90 
 17.60 
 
 19.10 
 21.80 
 13.40 
 21.00 
 24.70 
 
 17.70 
 18.60 
 18.20 
 17.90 
 14.70 
 
 22.40 
 28.60 
 37.40 
 39.20 
 26.10 
 
 33.00 
 40. 10 
 29.80 
 27.70 
 28.20 
 
 29.30 
 42.00 
 26.60 
 56.40 
 28.90 
 
 19.80 
 26.10 
 24.30 
 18.30 
 17.60 
 
 18.70 
 17.10 
 17.10 
 18.30 
 18.10 
 
 17.20 
 17.50 
 16.00 
 13.30 
 13.10 
 
 14.00 
 14.50 
 13.40 
 11.80 
 13.10 
 
 12.70 
 13.40 
 13.30 
 13.90 
 24.60 
 
 23.70 
 19.90 
 19.60 
 22.80 
 23.80 
 
 13.30 
 11.40 
 11.50 
 12.00 
 17.00 
 
 15.60 
 15.80 
 23.80 
 32.30 
 32.10 
 
 20.40 
 23.00 
 30.90 
 24.90 
 15.40 
 
 11.20 
 11.40 
 11.00 
 11.00 
 11.30 
 
 11.70 
 12.40 
 11.70 
 11.60 
 12.60 
 
 16.10 
 13.30 
 13.90 
 21.10 
 20.60 
 
 9.77 
 12.70 
 13.30 
 10.50 
 10.20 
 
 11.20 
 12.70 
 11.00 
 11.30 
 11.00 
 
 10.80 
 10.60 
 9.80 
 9.00 
 9.70 
 
 13.20 
 15.90 
 11.80 
 20.80 
 14.20 
 
 11.10 
 10.80 
 10.80 
 10.60 
 12.10 
 
 20.00 
 22.90 
 21.00 
 22.70 
 13.50 
 
 12.70 
 13.30 
 10.40 
 9.23 
 10.20 
 
 9.33 
 
 9.77 
 
 12.40 
 
 33.60 
 
 14.00 
 
 9.93 
 9.53 
 9.37 
 9.67 
 16.80 
 
 29.20 
 15.20 
 34.50 
 15.60 
 14.30 
 
 19.30 
 35.80 
 35.40 
 19.00 
 14.30 
 
 14.00 
 13.60 
 13.40 
 15.40 
 14.40 
 
134 
 
 Daily 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 e, in million gallons, of Waihee canal at weir near Wailuku, Maui, for 
 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dee. 
 
 16 
 
 13.20 
 12.10 
 12.70 
 12.30 
 12.30 
 
 13.00 
 10.90 
 11.50 
 11.50 
 11.50 
 
 10.40 
 10.10 
 9.75 
 9.82 
 10.80 
 11.60 
 
 11.00 
 11.30 
 11.20 
 40.50 
 45.40 
 
 22.90 
 9.50 
 15.00 
 16.40 
 30.10 
 
 22.00 
 22.00 
 15.50 
 12.30 
 
 17.00 
 20.10 
 25.40 
 22.30 
 23.30 
 
 22.30 
 18.90 
 17.60 
 17.30 
 17.20 
 
 23.00 
 21.60 
 22.30 
 22.20 
 26.60 
 29.40 
 
 38.10 
 34.00 
 28.70 
 30.50 
 28.30 
 
 26.00 
 26.40 
 22.10 
 21.40 
 18.30 
 
 24.50 
 17.50 
 19.10 
 16.60 
 16.40 
 
 14.60 
 14.30 
 14.20 
 16.30 
 14.30 
 
 15.10 
 13.60 
 13.20 
 18.90 
 16.60 
 
 23.20 
 30.50 
 20.43 
 23.20 
 16.20 
 15.00 
 
 19.30 
 13. 80- 
 13.90 
 12.80 
 13.50 
 
 17.10 
 14.40 
 14.60 
 18.50 
 13.20 
 
 14.40 
 16.00 
 13.60 
 13.50 
 13.50 
 
 16.80 
 14.30 
 13.70 
 14.70 
 13.80 
 
 17.90 
 14.40 
 13.20 
 13.20 
 11.10 
 
 11.20 
 11.70 
 12.60 
 11.60 
 12.10 
 11.80 
 
 18.60 
 14.10 
 11.90 
 12.30 
 11.30 
 
 9.33 
 
 13.00 
 10.80 
 9.86 
 9.63 
 
 19.70 
 16.60 
 10.30 
 11.60 
 10.50 
 
 9.87 
 9.60 
 11.30 
 10.70 
 11.50 
 
 10.30 
 10.00 
 10.10 
 8.50 
 9.07 
 
 10.20 
 10.70 
 10.70 
 12.00 
 20.00 
 
 11.40 
 11.90 
 11.00 
 10.10 
 12.70 
 
 12.90 
 14.50 
 13.30 
 11.50 
 10.10 
 
 12.30 
 16.60 
 16.30 
 11.20 
 12.70 
 13.20 
 
 39.40 
 29.00 
 31.60 
 18.10 
 27.40 
 
 28.60 
 24.10 
 12.70 
 15.20 
 12.40 
 
 12.00 
 8.03 
 9.33 
 9.20 
 
 18.20 
 
 23.30 
 
 17 
 
 13.70 
 
 18 
 
 21.50 
 
 19 
 
 19.10 
 
 20 
 
 12.60 
 
 21 
 
 27.20 
 
 22 
 
 34.10 
 
 23 
 
 22.20 
 
 24 
 
 16.30 
 
 25 
 
 26.00 
 
 26 
 
 17.90 
 
 27 
 
 15.90 
 
 28 
 
 17.30 
 
 29 
 
 13.50 
 
 30 
 
 16.10 
 
 31 
 
 21.70 
 
 
 
 
 
 Monthly discharge of Waihee canal at weir near Wailuku, Maui, for 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Run-on* 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 January 
 
 19.80 
 45.40 
 29.40 
 56.40 
 30.50 
 24.60 
 32.30 
 21.10 
 20.00 
 22.90 
 39.40 
 35.80 
 
 9.75 
 
 9.50 
 
 13.40 
 
 16.40 
 
 13.10 
 
 11.80 
 
 11.10 
 
 9.33 
 
 8.50 
 
 10.10 
 
 8.03 
 
 12.60 
 
 13.4 
 17.0 
 20.3 
 28.8 
 17.8 
 15.9 
 16.6 
 13.0 
 10.9 
 14.0 
 16.2 
 20.1 
 
 415 
 
 February 
 
 492 
 
 
 629 
 
 April 
 
 864 
 
 May 
 
 552 
 
 June 
 
 477 
 
 July 
 
 514 
 
 August 
 
 390 
 
 September 
 
 328 
 
 October 
 
 433 
 
 November 
 
 485 
 
 December 
 
 622 
 
 
 
 The year 
 
 56.40 
 
 8.03 
 
 17.0 
 
 6,200 
 
 
 SPRECKELS DITCH NEAR WAIHEE, MAUI. 
 
 Location. — About 2 miles west of Waihee and about 500 feet below intake. 
 
 Records available. — November 17, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at about 4 a. m. and 3.30 p. m. Septem- 
 ber 7, 1912, gage was removed to a point a short distance upstream and placed at 
 new datum. 
 
 Channel. — Probably permanent. 
 
 Discharge measurements. — Made by wading. 
 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
 Discharge measurements of Sprechels ditch near Waihee, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 3 
 Aug. 6 
 Sept. 7 
 
 J.B.Stewart 
 
 do 
 
 do 
 
 Feet. 
 0.24 
 .15 
 .30 
 
 Sec.-ft. 
 2.06 
 1.01 
 2.82 
 
 Oct. 29 
 Dec. 1 
 
 J.B.Stewart 
 
 C.T.Bailey 
 
 Feet. 
 0.21 
 1.66 
 
 Sec.-ft. 
 1.67 
 
 58.7 
 
ISLAND OF MAUI. 
 
 135 
 
 Daily gage height, in feet, of Sprechels ditch near Waihee, Maui, for 1912. 
 [Joaquin Santos, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.40 
 .40 
 .60 
 .50 
 .30 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .15 
 .10 
 .10 
 .10 
 .00 
 
 .00 
 .00 
 .00 
 .10 
 .10 
 
 .00 
 .00 
 .00 
 .00 
 .05 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 1.00 
 .60 
 .60 
 
 .40 
 .40 
 .60 
 1.00 
 .70 
 
 .80 
 1.20 
 1.60 
 1.50 
 
 .55 
 
 1.40 
 1.40 
 1.20 
 1.20 
 
 1.30 
 1.20 
 1.20 
 1.20 
 1.50 
 
 1.20 
 1.00 
 1.20 
 1.20 
 1.20 
 
 1.20 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.25 
 1.20 
 1.30 
 1.10 
 1.15 
 
 .80 
 .70 
 .60 
 .40 
 .40 
 
 .40 
 .80 
 .60 
 .70 
 .50 
 .50 
 
 1.25 
 1.65 
 1.80 
 1.70 
 1.60 
 
 1.50 
 1.70 
 1.50 
 .95 
 
 .80 
 
 .'80 
 .70 
 .70 
 .80 
 .60 
 
 1.90 
 1.70 
 1.25 
 1.10 
 . 1.20 
 
 .70 
 .60 
 .70 
 .90 
 .70 
 
 .50 
 .40 
 .70 
 .50 
 .40 
 
 0.30 
 .50 
 .60 
 .40 
 .30 
 
 .40 
 .50 
 .70 
 .60 
 .50 
 
 .40 
 .35 
 .30 
 .25 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .25 
 
 .15 
 .20 
 .15 
 .15 
 .15 
 
 .20 
 1.50 
 1.70 
 1.70 
 
 .80 
 1.50 
 
 0.75 
 .53 
 
 .20 
 .15 
 .15 
 
 .10 
 .15 
 
 .10 
 .10 
 .05 
 
 1.50 
 
 1.00 
 
 .90 
 
 .95 
 
 .80 
 
 ,.45 
 .50 
 .30 
 .30 
 .20 
 
 .50 
 .40 
 .15 
 , .30 
 .20 
 
 .20 
 .15 
 .15 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .15 
 
 1.00 
 
 .62 
 
 .70 
 
 .90 
 
 1.75 
 
 1.05 
 
 1.60 
 1.70 
 1.60 
 1.15 
 .20 
 
 .85 
 .20 
 .20 
 .20 
 .20 
 
 .60 
 .20 
 .20 
 .45 
 .20 
 
 .20 
 .22 
 .20 
 .20 
 .20 
 .20 
 
 0.20 
 
 .20 
 .20 
 .20 
 .20 
 
 .1$ 
 .15 
 .20 
 .60 
 .25 
 
 .60 
 .70 
 .65 
 .90 
 1.05 
 
 1.00 
 .15 
 .15 
 .15 
 .15 
 
 1.20 
 
 1.45 
 
 .15 
 
 .15 
 
 .15 
 
 .92 
 .00 
 .00 
 .00 
 .00 
 .15 
 
 0.15 
 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .90 
 .10 
 .20 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .30 
 
 .15 
 .20 
 
 .20 
 .15 
 
 .18 
 
 0.92 
 .20 
 .SO 
 
 1.00 
 .18 
 
 .15 
 .15 
 .15 
 .20 
 .25 
 
 .90 
 .90 
 .55 
 .65 
 1.00 
 
 .20 
 .20 
 .20 
 
 .18 
 .20 
 
 1.35 
 
 1.30 
 
 .20 
 
 .20 
 
 .20 
 
 .20 
 .50 
 
 1.00 
 .25 
 .30 
 
 1.05 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 
 1.80 
 .25 
 
 .20 
 .20 
 .20 
 .20 
 1.00 
 
 1.80 
 1.40 
 1.80 
 .30 
 1.10 
 
 1.75 
 .35 
 
 .70 
 
 1.40 
 
 .90 
 
 .80 
 .80 
 .80 
 .80 
 1.05 
 
 1.70 
 
 2 
 
 1.10 
 
 3 
 
 1.80 
 
 4 
 
 .40 
 
 5 
 
 .30 
 
 6 
 
 .95 
 
 7 
 
 1.05 
 
 8 
 
 .30 
 
 9 
 
 .40 
 
 10 
 
 .25 
 
 11 
 
 .25 
 
 12 
 
 .20 
 
 13 
 
 .20 
 
 14 
 
 .20 
 
 15 
 
 .20 
 
 16 
 
 1.00 
 
 17 
 
 .30 
 
 18 
 
 1.10 
 
 19 
 
 .45 
 
 20 
 
 .30 
 
 21 
 
 .30 
 
 22 
 
 .30 
 
 
 .30 
 
 24 
 
 .30 
 
 25 
 
 .40 
 
 26 
 
 .30 
 
 27 
 
 .35 
 
 28 
 
 1.02 
 
 29 
 
 .55 
 
 30 
 
 1.00 
 
 31 
 
 .45 
 
 
 
 WAIEHU STREAM BASIN. 
 NORTH WAIEHU STREAM NEAR WAILUKU, MAUL* 
 
 Location. — About 2\ miles northwest of Wailuku, 1 mile above Waihee Canal cross- 
 ing, and 50 feet above the intake of the North Waiehu ditch. 
 Records available. — July 9 to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; datum unchanged. 
 Channel. — Probably shifting; bed of stream of gravel and small bowlders. 
 Discharge measurements. — Made by wading. 
 Accuracy. — Good . 
 Cooperation. — Station is maintained in cooperation with Wailuku Sugar Co. 
 
 Discharge measurements of North Waiehu Stream near Wailuku, Maui, in 1912. 
 [Hydrographer, J. B. Stewart.] 
 
 Date. 
 
 July 5 
 
 8 
 13 
 
 Gage 
 height. 
 
 Feet. 
 
 a 1.10 
 .65 
 .65 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 2.06 
 5.51 
 5.52 
 
 Date. 
 
 July 16 
 Sept. 6 
 Oct. 28 
 
 Gage 
 height. 
 
 Feet. 
 0.63 
 .62 
 
 .77 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 5.09 
 4.13 
 8.92 
 
 « Old gage. 
 
 1 This station replaces the two stations formerly maintained on North Waiehu Stream and North 
 Waiehu ditch. 
 
136 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of North Waiehu Stream near Wailuku, Maui, for 1912. 
 
 [E. Soper, observer.] 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.60 
 .60 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 .60 
 
 .62 
 .64 
 .61 
 .62 
 .64 
 
 0.60 
 .62 
 .60 
 .60 
 .60 
 
 .60 
 .61 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 .60 
 
 0.60 
 .68 
 .62 
 .88 
 .65 
 
 .65 
 .65 
 .65 
 .65 
 
 .65 
 
 .64 
 .70 
 
 .74 
 .75 
 .70 
 
 0.65 
 .65 
 .65 
 .65 
 .65 
 
 .65 
 .62 
 .66 
 .70 
 .65 
 
 .62 
 .62 
 .62 
 .62 
 .62 
 
 0.72 
 .70 
 
 .78 
 .70 
 .68 
 
 .60 
 .65 
 .60 
 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 
 .60 
 .CO 
 
 16 
 
 0.60 
 .60 
 .60 
 .62 
 .60 
 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 
 0.62 
 .60 
 .60 
 .60 
 .60 
 
 .60 
 .65 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 .60 
 .60 
 
 0.60 
 .60 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 .65 
 .60 
 .60 
 
 .62 
 .61 
 .68 
 .61 
 .60 
 
 0.65 
 .65 
 .65 
 .65 
 .65 
 
 .66 
 .70 
 .68 
 .65 
 .65 
 
 .65 
 .70 
 .68 
 .65 
 .65 
 .65 
 
 0.80 
 .70 
 .70 
 
 .65 
 .75 
 
 .70 
 .70 
 .70 
 .70 
 .70 
 
 .70 
 .65 
 .65 
 .65 
 
 .78 
 
 0.60 
 
 2 
 
 
 17 
 
 .68 
 
 3 
 
 
 18 
 
 .60 
 
 4 
 
 
 19 
 
 .60 
 
 5 
 
 
 20 
 
 .60 
 
 6 
 
 
 21 
 
 .61 
 
 7 
 
 
 22 
 
 .60 
 
 8 
 
 
 23 
 
 .60 
 
 9 
 
 10 
 
 11 
 
 12.... 
 
 13 
 
 14 
 
 15 
 
 0.70 
 .68 
 
 .65 
 .65 
 .68 
 .65 
 .60 
 
 24 
 
 25 
 
 26 
 
 27 
 
 23 
 
 29 
 
 30 
 
 31 
 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 .60 
 .60 
 
 
 
 
 Daily discharge, in second-feet, of North Waiehu Stream near Wailuku, Maui, for 1912. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.7 
 5.2 
 4.5 
 
 4.7 
 5.2 
 
 4.2 
 4.7 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.4 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.2 
 6.3 
 4.7 
 13.2 
 5.5 
 
 5.5 
 5.5 
 5.5 
 5.5 
 5.5 
 
 5.2 
 6.8 
 8.1 
 8.4 
 6.8 
 
 5.5 
 5.5 
 5.5 
 5.5 
 5.5 
 
 5.5 
 4.7 
 5.8 
 6.8 
 5.5 
 
 4.7 
 4.7 
 
 4.7 
 4.7 
 4.7 
 
 7.4 
 6.8 
 9.4 
 6.8 
 6.3 
 
 4.2 
 5.5 
 4.2 
 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 16 
 
 4.2 
 4.2 
 4.2 
 4.7 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.7 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.2 
 6.5 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.2 
 5.5 
 4.2 
 4.2 
 
 4.7 
 4.5 
 6.3 
 4.5 
 
 4.2 
 
 5.5 
 
 5.5 
 5.5 
 5.5 
 5.5 
 
 5.8 
 6.8 
 6.3 
 5.5 
 5.5 
 
 5.5 
 6.8 
 6.3 
 5.5 
 5.5 
 5.5 
 
 10.0 
 6.8 
 6.8 
 5.5 
 8.4 
 
 6.8 
 6.8 
 6.8 
 6.8 
 6.8 
 
 6.8 
 5.5 
 
 5.5 
 5.5 
 9.4 
 
 4.2 
 
 2 
 
 
 17 
 
 6.3 
 
 3 
 
 
 18 
 
 4.2 
 
 4 
 
 
 19 
 
 4.2 
 
 5 
 
 
 20 
 
 4.2 
 
 C 
 
 
 21 
 
 4.5 
 
 7 
 
 
 22 
 
 4.2 
 
 8 
 
 
 23 
 
 4.2 
 
 9 
 
 10 
 
 11 
 
 12 
 
 13 
 
 14 
 
 15 
 
 6.8 
 6.3 
 
 5.5 
 5.5 
 6.3 
 5.5 
 4.2 
 
 24 
 
 25 
 
 26 
 
 27 
 
 28 
 
 29... 
 
 30 
 
 31 
 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 
 
 
 Monthly discharge of North Waiehu Stream near Wailuku, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 Accu- 
 racy. 
 
 July.' 
 
 August 
 
 September. 
 October... 
 November. 
 December. 
 
 5.5 
 6.3 
 13.2 
 10.0 
 9.4 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.7 
 4.2 
 
 4.69 
 4.36 
 4.40 
 6.10 
 6.12 
 4.83 
 
 214.0 
 268.0 
 262.0 
 375.0 
 364.0 
 297.0 
 
 The period. 
 
 1,780.0 
 
 SOUTH WAIEHU STREAM NEAR WAILUKU, MAUI.i 
 
 Location. — About 1£ miles northwest of Wailuku and 75 feet below diversion dam 
 
 for South Waiehu ditch. 
 Records available. — July 10 to December 31, 1912. 
 
 Gage. — Inclined-staff gage; read daily, at 5 a. m. and 5 p. m.; datum unchanged 
 Channel. — Shifting. 
 
 i This station replaces the one formerly maintained at the diversion dam. 
 
ISLAND OF MAUI. 
 
 137 
 
 Discharge measurements. — Made by wading. 
 
 Accuracy. — A discharge rating has not yet been obtained. 
 
 Cooperation. — Station maintained in cooperation with Wailuku Sugar Co. 
 
 Discharge measurements of South Waiehu Stream near Wailuku, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 10 
 16 
 
 J. B. Stewart 
 
 Feet. 
 
 0.30 
 
 .28 
 
 .33 
 
 .34 
 
 Sec.-ft. 
 0.20 
 
 ...do 
 
 .15 
 
 Sept. 6 
 Dec. 1 
 
 do 
 
 .20 
 
 C. T. Bailey 
 
 .20 
 
 
 
 
 Daily gage height, in feet, of South Waiehu Stream near Wailuku, Maui, for 1912. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.40 
 .45 
 .48 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .50 
 .50 
 
 .55 
 .55 
 .45 
 .52 
 .60 
 
 0.40 
 .65 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.40 
 
 .65 
 .45 
 .60 
 .45 
 
 .45 
 .42 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .55 
 .50 
 .40 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 
 .80 
 
 .48 
 
 .40 
 .40 
 .40 
 .40 
 .50 
 
 0.40 
 .40 
 
 .85 
 .40 
 .40 
 
 .60 
 .90 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 16 
 
 0.45 
 .45 
 .40 
 .40 
 .40 
 
 .40 
 .52 
 .42 
 .40 
 .40 
 
 .52 
 .45 
 .45 
 .45 
 .45 
 .40 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .50 
 .45 
 .45. 
 .45 
 
 .45 
 .40 
 .40 
 .40 
 
 .40 
 
 0.40 
 
 .40 
 .40 
 .40 
 .40 
 
 .60 
 .48 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.80 
 .48 
 .75 
 .40 
 .48 
 
 .60 
 .45 
 .40 
 .40 
 .40 
 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 
 0.75 
 
 2. 
 
 17 
 
 .45 
 
 3. . 
 
 18 
 
 .40 
 
 4... 
 
 19 
 
 .40 
 
 5... 
 
 20 
 
 .40 
 
 6 
 
 21 
 
 .45 
 
 7 
 
 22 
 
 - .52 
 
 8 
 
 23 
 
 .40 
 
 9 
 
 24 
 
 .40 
 
 10 
 
 25 
 
 .40 
 
 11 
 
 26 
 
 .40 
 
 12 
 
 27 
 
 .40 
 
 13 
 
 28 
 
 .40 
 
 14 
 
 29 
 
 .40 
 
 15 
 
 30 
 
 .40 
 
 
 31 
 
 .40 
 
 
 
 
 IAO STREAM BASIN. 
 
 IAO STREAM NEAR WAILUKU, MAUI. 
 
 Location. — About 3 miles west of Wailuku and one-fourth mile below the forks of 
 
 the stream. 
 Records available.— May 7, 1910, to December 31, 1912. 
 Drainage area. — Not mapped. 
 Gage. — Friez clock register; datum unchanged. 
 
 Channel. — Rough; several changes in control since station was established. 
 Discharge measurements. — Made by wading and from cable and car at gage. 
 Accuracy. — Records very good. 
 
 Discharge measurements cf Iao Stream near Wailuku, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 15 
 
 J.B.Stewart 
 
 Feet. 
 2.90 
 2.78 
 
 Sec.-ft. 
 38.5 
 
 Aug. 30 
 
 do 
 
 24.9 
 
 
 
 
138 
 
 Daily gage height, in feet, of Iao Stream near Wailuku, Maui, for 1912. 
 [F. G. Duarte, observer.) 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2.82 
 2.80 
 2.78 
 2.73 
 2.72 
 
 2.67 
 2.73 
 3.00 
 2.80 
 2.70 
 
 2.67 
 
 2.68 
 2.70 
 2.68 
 2.67 
 
 2.66 
 2.66 
 2.66 
 2.65 
 2.65 
 
 2.64 
 2.63 
 2.63 
 2.71 
 2.65 
 
 2.63 
 
 2.65 
 2.67 
 2.66 
 2.74 
 2.78 
 
 2.70 
 3.30 
 3.20 
 3.02 
 2.98 
 
 2.90 
 
 2.87 
 2.86 
 2.84 
 2.91 
 
 3.04 
 2.93 
 3.04 
 2.99 
 2.96 
 
 2.97 
 2.98 
 2.90 
 4.22 
 4.10 
 
 3.92 
 3.60 
 3.53 
 3.51 
 3.33 
 
 3.60 
 4.25 
 3.77 
 3.30 
 
 3.69 
 3.95 
 3.94 
 3.46 
 3.42 
 
 3.43 
 
 3.48 
 3.25 
 3.82 
 3.85 
 
 4.36 
 
 4.20 
 3.98 
 3.53 
 3.28 
 
 3.14 
 3.47 
 3.64 
 3.46 
 3.42 
 
 3.38 
 3.19 
 3.10 
 3.02 
 3.14 
 
 3.13 
 3.08 
 3.26 
 3.30 
 3.90 
 3.76 
 
 3.54 
 3.63 
 3.78 
 4.43 
 4.62 
 
 3.84 
 4.20 
 3.92 
 3.52 
 3.38 
 
 3.48 
 3.73 
 3.38 
 3.74 
 3.34 
 
 3.68 
 3.44 
 3.24 
 3.17 
 3.39 
 
 3.38 
 
 3.27 
 3.26 
 3.17 
 3.08 
 
 3.25 
 
 3.08 
 3.02 
 2.99 
 2.99 
 
 2.98 
 2.98 
 2.94 
 2.92 
 3.22 
 
 3.08 
 3.08 
 3.22 
 3.08 
 3.16 
 
 3.12 
 2.90 
 2.90 
 
 2.88 
 2.87 
 
 2.90 
 
 2.88 
 2.90 
 2.87 
 2.81 
 
 2.82 
 2.77 
 2.76 
 3.02 
 2.85 
 
 3.25 
 3.35 
 3.18 
 3.10 
 3.05 
 2.98 
 
 2.90 
 2.85 
 2.82 
 2.80 
 2.79 
 
 2.79 
 
 2.85 
 3.02 
 2.85 
 3.08 
 
 3.05 
 3.02 
 2.98 
 3.10 
 3.10 
 
 2.98 
 2.98 
 2.85 
 2.82 
 2.80 
 
 2.95 
 2.81 
 3.04 
 3.00 
 2.81 
 
 2.78 
 2.73 
 2.71 
 2.70 
 2.67 
 
 2.71 
 2.72 
 2.74 
 2.78 
 2.78 
 
 2.72 
 2.82 
 3.25 
 3.65 
 3.17 
 
 3.18 
 3.32 
 3.29 
 3.05 
 2.92 
 
 2.93 
 
 2.87 
 2.81 
 2.80 
 2.81 
 
 3.02 
 2.92 
 2.85 
 2.90 
 2.83 
 
 2.83 
 2.84 
 2.71 
 2.72 
 2.67 
 2.65 
 
 2.65 
 2.68 
 2.68 
 2.65 
 2.62 
 
 2.65 
 2.80 
 2.75 
 2.85 
 2.90 
 
 2.95 
 2.87 
 2.85 
 2.98 
 3.35 
 
 3.10 
 
 2.88 
 2.80 
 2.78 
 2.78 
 
 2.77 
 2.95. 
 2.78 
 2.73 
 2.68 
 
 3.17 
 2.95 
 2.79 
 2.82 
 2.77 
 2.72 
 
 2.68 
 2.90 
 2.72 
 2.78 
 2.70 
 
 2.85 
 3.00 
 2.78 
 2.78 
 2.72 
 
 2.68 
 2.66 
 2.62 
 2.60 
 2.61 
 
 2.61 
 2.67 
 2.65 
 2.70 
 2.75 
 
 2.68 
 2.58 
 2.62 
 2.58 
 2.57 
 
 2.75 
 2.78 
 2.93 
 3.19 
 3.01 
 
 2.92 
 3.02 
 2.80 
 3.09 
 2.95 
 
 2.80 
 2.85 
 2.79 
 2.78 
 2.82 
 
 3.02 
 3.03 
 3.08 
 3.45 
 3.02 
 
 2.90 
 2.85 
 2.81 
 2.72 
 2.68 
 
 2.85 
 3.00 
 2.88 
 2.80 
 2.78 
 
 2.95 
 3.10 
 3.05 
 2.80 
 2.88 
 3.15 
 
 2.81 
 2.78 
 2.72 
 2.70 
 
 2.68 
 
 2.68 
 2.71 
 3.00 
 3.89 
 3.07 
 
 3.00 
 2.90 
 2.84 
 2.82 
 2.88 
 
 4.02 
 3.61 
 3.62 
 3.28 
 3.42 
 
 3.60 
 3.25 
 3.12 
 2.92 
 2.83 
 
 2.80 
 2.78 
 2.75 
 2.72 
 3.00 
 
 2.95 
 
 2 
 
 2.88 
 
 3 
 
 3.25 
 
 4 
 
 2.95 
 
 5 
 
 2.85 
 
 6 
 
 2.95 
 
 7 
 
 3.21 
 
 8 
 
 3.08 
 
 9 
 
 2.95 
 
 10 
 
 2.88 
 
 11 
 
 2.82 
 
 12 
 
 2.80 
 
 13 
 
 2.80 
 
 14 
 
 2.85 
 
 15 
 
 2.80 
 
 16 
 
 2.85 
 
 17 
 
 2.81 
 
 18 
 
 3.14 
 
 19 
 
 3.07 
 
 20 
 
 2.93 
 
 21 
 
 3.30 
 
 22 
 
 3.32 
 
 23 
 
 3.32 
 
 24 
 
 3.03 
 
 25 
 
 3.24 
 
 26 
 
 3.17 
 
 27 
 
 2.98 
 
 28 
 
 3.05 
 
 29 
 
 2.94 
 
 30 
 
 2.98 
 
 31 
 
 2.95 
 
 
 
 Daily discharge, in second-feet, of Iao Stream near Wailuku, Maui, for 1912. 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 31.2 
 30.0 
 28.8 
 25.8 
 25.2 
 
 22.5 
 25.8 
 43.0 
 30.0 
 24.0 
 
 22.5 
 23.0 
 24.0 
 23.0 
 22.5 
 
 22.0 
 22.0 
 22.0 
 21.5 
 21.5 
 
 21.0 
 20.5 
 20.5 
 24.6 
 21.5 
 
 20.5 
 21.5 
 22.5 
 22.0 
 26.4 
 28.8 
 
 24.0 
 67.0 
 58.0 
 44.4 
 41.6 
 
 36.0 
 34.2 
 33.6 
 32.4 
 36.7 
 
 45.8 
 38.1 
 45.8 
 42.3 
 40.2 
 
 40.9 
 
 40.2 
 
 36.0 
 
 203.0 
 
 178.0 
 
 145.0 
 
 100.0 
 
 91.6 
 
 89.2 
 
 70.0 
 
 100.0 
 
 210.0 
 
 123.0 
 
 67.0 
 
 112.0 
 
 150.0 
 
 149.0 
 
 83.6 
 
 79.2 
 
 80.3 
 85.8 
 62.5 
 130.0 
 134.0 
 
 235.0 
 
 199.0 
 156.0 
 91.6 
 65.2 
 
 53.2 
 84.7 
 105.0 
 83.6 
 79.2 
 
 75.0 
 
 67.2 
 50.0 
 44.4 
 53.2 
 
 52.4 
 48.6 
 63.4 
 67.0 
 142.0 
 121.0 
 
 92.8 
 104.0 
 124.0 
 252.0 
 302.0 
 
 133.0 
 
 199.0 
 
 145.0 
 
 90.4 
 
 75.0 
 
 85.8 
 117.0 
 
 75.0 
 119.0 
 
 71.0 
 
 110.0 
 81.4 
 61.6 
 65.6 
 76.0 
 
 75.0 
 64.3 
 63.4 
 55.6 
 48.6 
 
 62.5 
 48.6 
 44.4 
 42.3 
 42.3 
 
 41.6 
 41.6 
 38.8 
 37.4 
 59.8 
 
 48.6 
 48.6 
 69.8 
 48.6 
 54.8 
 
 51.6 
 36.0 
 36.0 
 34.8 
 34.2 
 
 36.0 
 34.8 
 36.0 
 34.2 
 30.6 
 
 31.2 
 28.2 
 27.6 
 44.4 
 33.0 
 
 62.5 
 72.0 
 56.4 
 60.0 
 46.5 
 41.6 
 
 36.0 
 33.0 
 31.2 
 30.0 
 29.4 
 
 29.4 
 33.0 
 44.4 
 33.0 
 48.6 
 
 46.5 
 44.4 
 41.6 
 50.0 
 50.0 
 
 41.6 
 41.6 
 33.0 
 31.2 
 30.0 
 
 39.5 
 30.6 
 45.8 
 43.0 
 
 28.8 
 25.8 
 24.6 
 24.0 
 22.5 
 
 24.6 
 25.2 
 26.4 
 28.8 
 28.8 
 
 25.2 
 31.2 
 62.5 
 106.0 
 55.6 
 
 56.4 
 69.0 
 66.1 
 46.5 
 37.4 
 
 38.1 
 34.2 
 30.6 
 30.0 
 30.6 
 
 44.4 
 37.4 
 33.0 
 36.0 
 31.8 
 
 31.8 
 
 32.4 
 24.6 
 25.2 
 22.5 
 21.5 
 
 21.5 
 23.0 
 23.0 
 21.5 
 20.0 
 
 21.5 
 30.0 
 27.0 
 33.0 
 36.0 
 
 39.5 
 34.2 
 33.0 
 41.6 
 72.0 
 
 50.0 
 34.8 
 30.0 
 28.8 
 28.8 
 
 39.5 
 28.8 
 25.8 
 23.0 
 
 23.0 
 36.0 
 25.2 
 28.8 
 24.0 
 
 33.0 
 43.0 
 28.8 
 28.8 
 25.2 
 
 23.0 
 22.0 
 20.0 
 19.0 
 19.5 
 
 19.5 
 22.5 
 21.5 
 24.0 
 27.0 
 
 23.0 
 
 18.2 
 20.0 
 18.2 
 17.8 
 
 27.0 
 
 28.8 
 38.1 
 67.2 
 43.7 
 
 37.4 
 44.4 
 30.0 
 49.3 
 39.5 
 
 30.0 
 33.0 
 29.4 
 28.8 
 31.2 
 
 44.4 
 45.1 
 48.6 
 82.5 
 44.4 
 
 36.0 
 33.0 
 30.6 
 25.2 
 23.0 
 
 33.0 
 43.0 
 34.8 
 30.0 
 28.8 
 
 39.5 
 50.0 
 46.5 
 30.0 
 34.8 
 54.0 
 
 30.6 
 28.8 
 25.2 
 24.0 
 23.0 
 
 23.0 
 24.6 
 43.0 
 140.0 
 47.9 
 
 43.0 
 36.0 
 32.4 
 31.2 
 34.8 
 
 163.0 
 101.0 
 103.0 
 65.2 
 79.2 
 
 100.0 
 62.5 
 51.6 
 37.4 
 31.8 
 
 30.0 
 28.8 
 27.0 
 25.2 
 43.0 
 
ISLAND OF MAUI. 
 
 Monthly discharge of Iao Stream near Wailuku, Maui, for 1912. 
 
 139 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 
 43.0 
 210.0 
 235.0 
 302.0 
 72.0 
 50.0 
 106.0 
 72.0 
 57.2 
 82.5 
 163.0 
 69.0 
 
 20.5 
 24.0 
 44.4 
 42.3 
 27.6 
 22.5 
 21.5 
 20.0 
 17.8 
 23.0 
 23.0 
 30.0 
 
 24.5 
 
 72.9 
 96.6 
 97.2 
 43.1 
 35.8 
 38.5 
 32.4 
 26.9 
 38.4 
 51.2 
 44.0 
 
 1,510 
 4,190 
 5,940 
 5,780 
 2,650 
 2,130 
 2,370 
 1,990 
 1,600 
 2,360 
 3,050 
 2,710 
 
 B. 
 
 
 A. 
 
 
 A. 
 
 
 A. 
 
 
 A. 
 
 
 B. 
 
 July 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 A. 
 
 
 A. 
 
 
 
 
 302.0 
 
 17.8 
 
 50.0 
 
 36,300 
 
 
 
 
 MANIANIA DITCH NEAR WAILUKU, MAUI. 
 
 Location. — About 2\ miles west of Wailuku and 800 feet below intake. 
 
 Records available. — November 14, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily; gage moved about December 30, 1911; new 
 
 location and datum. 
 Channel. — Probably permanent. 
 
 Discharge measurements. — Made from plank 50 feet above gage. 
 Accuracy. — Fair. 
 Cooperation. — Station maintained in cooperation with Wailuku Sugar Co. 
 
 Discharge measurements of Maniania ditch near Wailuku, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 9 
 Dec. 9 
 
 
 Feet. 
 1.50 
 1.10 
 
 Sec.-ft. 
 30.0 
 
 C. T. Bailey 
 
 19.8 
 
 
 
 
 Daily gage height, in feet, of Maniania ditch near Wailuku, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 1.50 
 1.45 
 1.40 
 1.30 
 1.25 
 
 1.20 
 1.20 
 1.45 
 1.40 
 1.25 
 
 1.25 
 1.15 
 1.15 
 1.10 
 1.10 
 
 1.10 
 1.10 
 1.10 
 1.10 
 1.10 
 
 1.00 
 1.45 
 1.50 
 1.20 
 1.20 
 
 1.10 
 1.10 
 1.05 
 1.10 
 1.05 
 
 1.30 
 1.15 
 1 25 
 1.30 
 1.10 
 
 1.10 
 1.10 
 1.00 
 1.20 
 .40 
 
 1.10 
 
 1.10 
 
 .90 
 
 .90 
 
 1.05 
 
 1.10 
 1.15 
 1.20 
 1.20 
 1.20 
 
 1.25 
 .75 
 1.20 
 1.25 
 1.25 
 
 1.35 
 1.35 
 1.35 
 1.25 
 1.25 
 
 1.25 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.25 
 1.10 
 .95 
 1.00 
 1.20 
 
 1.20 
 1.20 
 1.20 
 1.00 
 1.05 
 
 1.30 
 1.35 
 1.35 
 1.35 
 1.20 
 
 1.35 
 1.35 
 1.35 
 
 1.35 
 1.30 
 1.25 
 1.25 
 1.20 
 
 1.45 
 1.40 
 1.45 
 1.45 
 1.45 
 
 1.25 
 1.45 
 1.40 
 1.40 
 1.40 
 
 1.20 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.25 
 1.30 
 1.40 
 1.40 
 1.35 
 
 1.50 
 1.40 
 1.40 
 1.35 
 1.25 
 
 1.10 
 1.10 
 1.10 
 1.05 
 1.05 
 
 1.30 
 1.30 
 1.25 
 1.50 
 1.50 
 
 1.40 
 1.35 
 1.15 
 1.20 
 1.10 
 
 1.05 
 1.40 
 
 1.05 
 
 1.05 
 
 1.05 
 
 .95 
 
 .95 
 
 .90 
 
 .95 
 
 .95 
 
 1.00 
 
 1.00 
 
 1.00 
 
 1.10 
 1.15 
 1.12 
 1.05 
 1.05 
 
 1.05 
 1.30 
 1.40 
 1.50 
 1.45 
 
 1.35 
 1.25 
 1.12 
 1.10 
 .95 
 
 1.30 
 
 .90 
 
 .90 
 
 1.05 
 
 1.05 
 
 1.05 
 1.00 
 1.20 
 1.40 
 1.20 
 
 1.40 
 1.30 
 1.25 
 1.15 
 1.40 
 
 1.35 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.10 
 1.35 
 .90 
 1.00 
 1.20 
 
 1.25 
 1.20 
 1.00 
 1.20 
 1.25 
 
 1.20 
 1.20 
 1.12 
 1.15 
 1.00 
 
 1.30 
 1.20 
 1.30 
 1.45 
 1.35 
 
140 WATEB BESOUBCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Maniania ditch near Wailuku, Maui, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 1.00 
 1.05 
 1.05 
 1.15 
 1.05 
 
 1.05 
 
 1.00 
 
 .90 
 
 .95 
 
 .95 
 
 1.05 
 
 0.90 
 .70 
 .70 
 .70 
 .50 
 
 1.00 
 1.05 
 1.05 
 1.05 
 
 1.25 
 1.25 
 1.25 
 1.10 
 1.25 
 
 1.25 
 1.30 
 1.35 
 1.35 
 1.35 
 1.20 
 
 1.10 
 1.30 
 1.30 
 1.30 
 1.35 
 
 1.35 
 1.35 
 1.20 
 1.30 
 1.30 
 
 1.30 
 1.30 
 1.25 
 1.35 
 1.25 
 
 1.30 
 1.35 
 1.30 
 1.30 
 1.35 
 1.35 
 
 1.50 
 1.40 
 1.30 
 1.45 
 1.40 
 
 1.35 
 1.30 
 1.25 
 1.20 
 1.15 
 
 1.40 
 1.25 
 1.25 
 1.30 
 1.20 
 
 1.20 
 1.25 
 1.20 
 1.25 
 1.15 
 1.10 
 
 1.10 
 1.30 
 1.10 
 1.05 
 1.00 
 
 1.35 
 1.40 
 1.25 
 1.35 
 1.25 
 1.10 
 
 1.00 
 .90 
 
 .95 
 
 .85 
 .85 
 
 1.00 
 1.10 
 1.20 
 1.10 
 
 1.40 
 
 1.20 
 1.35 
 1.35 
 1.30 
 1.15 
 
 1.40 
 1.35 
 1.45 
 1.35 
 
 1.40 
 1.50 
 
 1.20 
 1.20 
 
 "i.'io* 
 
 1.20 
 1.15 
 1.30 
 
 1.35 
 
 22 
 
 1.20 
 
 23 
 
 1.35 
 
 24 
 
 1.35 
 
 25 
 
 1.20 
 
 26 
 
 1.35 
 
 27 
 
 1.40 
 
 28 
 
 1.45 
 
 29 
 
 1.20 
 
 30 
 
 1.40 
 
 31 
 
 1.40 
 
 Daily discharge, 
 
 in second-feet, of Manian 
 
 ia ditch near 
 
 Wailuku, Maui, for 1912 
 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 30.0 
 
 28.8 
 27.5 
 25.0 
 23.8 
 
 22.5 
 22.5 
 28.8 
 27.5 
 23.8 
 
 23.8 
 21.2 
 21.2 
 20.0 
 20.0 
 
 20.0 
 20.0 
 20.0 
 20.0 
 20.0 
 
 17.5 
 18.8 
 18.8 
 21.2 
 18.8 
 
 18.8 
 17.5 
 15.0 
 16.2 
 16.2 
 18.8 
 
 17.5 
 28.8 
 30.0 
 22.5 
 22.5 
 
 20.0 
 20.0 
 18.8 
 20.0 
 18.8 
 
 25.0 
 21.2 
 23.8 
 25.0 
 20.0 
 
 20.0 
 20.0 
 17.5 
 22.5 
 5.0 
 
 15.0 
 10.5 
 10.5 
 10.5 
 6.5 
 
 17.5 
 18.8 
 18.8 
 18.8 
 
 20.0 
 20.0 
 15.0 
 15.0 
 18.8 
 
 18.8 
 18.8 
 20.0 
 20.0 
 17.5 
 
 20.0 
 21.2 
 22.5 
 22.5 
 22.5 
 
 23.8 
 11.5 
 22.5 
 23.8 
 23.8 
 
 23.8 
 23.8 
 23.8 
 20.0 
 23.8 
 
 23.8 
 25.0 
 26.2 
 26.2 
 26.2 
 22.5 
 
 26.2 
 26.2 
 26.2 
 23.8 
 23.8 
 
 23.8 
 22.5 
 22.5 
 22.5 
 22.5 
 
 23.8 
 20.0 
 16.2 
 17.5 
 22.5 
 
 22.5 
 
 22.5 
 22.5 
 17.5 
 
 18.8 
 
 20.0 
 25.0 
 25.0 
 25.0 
 26.2 
 
 26.2 
 26.2 
 22.5 
 25.0 
 25.0 
 
 25.0 
 
 26.2 
 26.2 
 26.2 
 22.5 
 
 26.2 
 26.2 
 26.2 
 25.0 
 25.0 
 
 25.0 
 22.5 
 23.8 
 23.8 
 23.8 
 
 23.8 
 
 23.8 
 23.8 
 23.8 
 26.2 
 
 25.0 
 25.0 
 23.8 
 26.2 
 23.8 
 
 25.0 
 26.2 
 25.0 
 25.0 
 26.2 
 26.2 
 
 26.2 
 25.0 
 23.8 
 23.8 
 22.5 
 
 22.5 
 
 23.8 
 26.2 
 23.8 
 27.5 
 
 28.8 
 27.5 
 28.8 
 28.8 
 28.8 
 
 23.8 
 28.8 
 27.5 
 27.5 
 27.5 
 
 30.0 
 27.5 
 25.0 
 28.8 
 27.5 
 
 26:2 
 
 25.0 
 23.8 
 22.5 
 21.2 
 
 22.5 
 22.5 
 22.5 
 22.5 
 22.5 
 
 23.8 
 25.0 
 27.5 
 27.5 
 26.2 
 
 27.5 
 27.5 
 22.5 
 22.5 
 
 27.5 
 
 30.0 
 27.5 
 27.5 
 26.2 
 23.8 
 
 27.5 
 23.8 
 23.8 
 25.0 
 22.5 
 
 22.5 
 23.8 
 22.5 
 23.8 
 21.2 
 20.0 
 
 20.0 
 20.0 
 20.0 
 18.8 
 18.8 
 
 18.8 
 25.0 
 20.0 
 25.0 
 25.0 
 
 25.0 
 25.0 
 23.8 
 30.0 
 30.0 
 
 27.5 
 26.2 
 21.2 
 22.5 
 20.0 
 
 20.0 
 25.0 
 20.0 
 
 18.8 
 17.5 
 
 26.2 
 27.5 
 23.8 
 26.2 
 23.8 
 20.0 
 
 18.8 
 27.5 
 20.0 
 22.5 
 21.2 
 
 22.5 
 25.0 
 17.5 
 21.2 
 
 18.8 
 
 18.8 
 18.8 
 16.2 
 16.2 
 15.0 
 
 16.2 
 16.2 
 17.5 
 17.5 
 17.5 
 
 17.5 
 15.0 
 16.2 
 13.8 
 13.8 
 
 17.5 
 20.0 
 22.5 
 20.0 
 27.5 
 
 28.8 
 30.0 
 25.0 
 30.0 
 25.0 
 
 20.0 
 21.2 
 20.5 
 18.8 
 18.8 
 
 18.8 
 25.0 
 27.5 
 30.0 
 28.8 
 
 26.2 
 23.8 
 20.5 
 20.0 
 16.2 
 
 22.5 
 26.2 
 26.2 
 25.0 
 21.2 
 
 27.5 
 26.2 
 28.8 
 26.2 
 27.5 
 30.0 
 
 25.0 
 
 15.0 
 15.0 
 18.8 
 18.8 
 
 18.8 
 17.5 
 22.5 
 27.5 
 22.5 
 
 27.5 
 25.0 
 23.8 
 21.2 
 27.5 
 
 26.2 
 22.5 
 22.5 
 22.5 
 22.5 
 
 22.5 
 22.5 
 22.0 
 21.5 
 21.0 
 
 20.5 
 20.0 
 22.5 
 21.2 
 25.0 
 
 20.0 
 
 2 
 
 26.2 
 
 3 
 
 15.0 
 
 4 
 
 17.5 
 
 5 
 
 22.5 
 
 6 
 
 23.8 
 
 7 
 
 22.5 
 
 8 
 
 17.5 
 
 9 
 
 22.5 
 
 10 
 
 23.8 
 
 11 
 
 22.5 
 
 12 
 
 22.5 
 
 13 
 
 20.5 
 
 14 
 
 21.2 
 
 15 
 
 17.5 
 
 16 
 
 25.0 
 
 17 
 
 22.5 
 
 18... 
 
 25.0 
 
 19 
 
 28.8 
 
 20 
 
 26.2 
 
 21 
 
 26.2 
 
 22 
 
 22.5 
 
 23 
 
 26.2 
 
 24 
 
 26.2 
 
 25 
 
 22.5 
 
 26 
 
 26.2 
 
 27 
 
 27.5 
 
 28 
 
 28.8 
 
 29 
 
 22.5 
 
 30. 
 
 27.5 
 
 31.... 
 
 27.5 
 
 
 
 Note. — Daily discharge determined from rating curve based on two discharge measurements in 1912. 
 Monthly discharge of Maniania ditch near Wailuku, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 30.0 
 30.0 
 26.2 
 26.2 
 26.2 
 30.0 
 30.0 
 30.0 
 27.5 
 30.0 
 27.5 
 28.8 
 
 15.0 
 6.5 
 11.5 
 16.2 
 22.5 
 21.2 
 20.0 
 17.5 
 13.8 
 16.2 
 15.0 
 15.0 
 
 21.4 
 18.8 
 21.4 
 23.0 
 24.9 
 26.0 
 24.6 
 22.9 
 19.0 
 24.6 
 22.0 
 23.4 
 
 1,320 
 1,080 
 1,320 
 1,370 
 1,530 
 1,550 
 1,510 
 1,410 
 1,130 
 1,510 
 1,310 
 1,440 
 
 C. 
 
 February 
 
 C. 
 
 March 
 
 c. 
 
 April 
 
 c. 
 
 May 
 
 c. 
 
 
 c. 
 
 July 
 
 c. 
 
 August 
 
 c. 
 
 September 
 
 c. 
 
 October 
 
 c. 
 
 November 
 
 c. 
 
 December 
 
 c. 
 
 
 
 The year . . 
 
 30.0 
 
 6.5 
 
 22.7 
 
 16, 500 
 
 
 
 
ISLAND OF MAUI. 
 
 141 
 
 WAIKAPU STREAM BASIN. 
 WAIKAPU STREAM NEAR WAIKAPU, MAUI. 
 
 Location. — About 5 miles southwest of Wailuku and 1^ miles west of Waikapu, 500 
 
 feet below Palolo ditch. 
 Records available. — November 25, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 9 a. m. and 2 p. m.; datum unchanged. 
 Channel. — Shifting. 
 
 Discharge measurements. — Made by wading. 
 Accuracy. — Fair . 
 
 Discharge measurements of Waikapu Stream near Waikapu, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 9 
 
 12 
 
 J. B. Stewart 
 
 do 
 
 Feet. 
 0.91 
 .50 
 .31 
 
 Sec.-ft. 
 6.60 
 .50 
 .36 
 
 Oct. 18 
 Nov. 20 
 Dec. 11 
 
 J. B.Stewart 
 
 do 
 
 C.T.Bailey 
 
 Feet. 
 0.30 
 .70 
 .30 
 
 Sec.-ft. 
 0.25 
 2.34 
 
 Aug. 30 
 
 do 
 
 .22 
 
 Daily gage height, in feet, of Waikapu Stream near Waikapu, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 ^ May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 0.38 
 
 0.32 
 
 0.42 
 
 1.10 
 
 0.38 
 
 0.30 
 
 0.30 
 
 0.3S 
 
 0.30 
 
 0.30 
 
 0.30 
 
 .38 
 
 .62 
 
 1.49 
 
 1.18 
 
 .38 
 
 .29 
 
 .30 
 
 .38 
 
 .32 
 
 .40 
 
 .30 
 
 .38 
 
 .51 
 
 1.40 
 
 1.34 
 
 .38 
 
 .28 
 
 .30 
 
 .39 
 
 .30 
 
 .30 
 
 .30 
 
 .38 
 
 .60 
 
 .68 
 
 2.02 
 
 .35 
 
 .28 
 
 .30 
 
 .38 
 
 .30 
 
 .31 
 
 .30 
 
 .38 
 
 .32 
 
 .46 
 
 1.81 
 
 .32 
 
 .28 
 
 .30 
 
 .38 
 
 .30 
 
 .30 
 
 .30 
 
 .38 
 
 .32 
 
 .48 
 
 1.12 
 
 .30 
 
 .25 
 
 .30 
 
 .40 
 
 .30 
 
 .30 
 
 .30 
 
 .38 
 
 .32 
 
 .64 
 
 1.38 
 
 .30 
 
 .30 
 
 .29 
 
 .40 
 
 .31 
 
 .28 
 
 .30 
 
 .50 
 
 .32 
 
 .42 
 
 1.21 
 
 .31 
 
 .30 
 
 .28 
 
 .40 
 
 .30 
 
 .30 
 
 .31 
 
 .41 
 
 .34 
 
 1.02 
 
 .91 
 
 .30 
 
 .30 
 
 1.36 
 
 .40 
 
 .30 
 
 .30 
 
 1.48 
 
 .40 
 
 .32 
 
 1.39 
 
 .50 
 
 .30 
 
 .62 
 
 .66 
 
 .40 
 
 .30 
 
 .30 
 
 .35 
 
 .38 
 
 .49 
 
 1.62 
 
 .52 
 
 .30 
 
 .39 
 
 .39 
 
 .40 
 
 .30 
 
 .30 
 
 .30 
 
 .38 
 
 .34 
 
 1.26 
 
 1.91 
 
 .30 
 
 .34 
 
 .34 
 
 .42 
 
 .30 
 
 .30 
 
 .30 
 
 .38 
 
 .38 
 
 1.26 
 
 .89 
 
 .30 
 
 .31 
 
 .54 
 
 .40 
 
 .30 
 
 .34 
 
 .30 
 
 .38 
 
 .32 
 
 .55 
 
 1.46 
 
 .30 
 
 .30 
 
 .44 
 
 .40 
 
 .30 
 
 .45 
 
 .28 
 
 .38 
 
 .32 
 
 .35 
 
 .86 
 
 .30 
 
 .48 
 
 .42 
 
 .74 
 
 .30 
 
 .30 
 
 .28 
 
 .36 
 
 .32 
 
 .32 
 
 .65 
 
 .30 
 
 .35 
 
 .42 
 
 .48 
 
 .30 
 
 .30 
 
 1.32 
 
 .40 
 
 .32 
 
 .70 
 
 .68' 
 
 .30 
 
 .38 
 
 .41 
 
 .40 
 
 .30 
 
 .30 
 
 .92 
 
 .40 
 
 .32 
 
 1.06 
 
 .70 
 
 .28 
 
 .30 
 
 .38 
 
 .39 
 
 .30 
 
 .30 
 
 1.22 
 
 .40 
 
 1.15 
 
 .54 
 
 .45 
 
 .28 
 
 .30 
 
 .35 
 
 .35 
 
 .30 
 
 .30 
 
 .38 
 
 .40 
 
 1.34 
 
 .89 
 
 .52 
 
 .30 
 
 .30 
 
 .35 
 
 .35 
 
 .30 
 
 .30 
 
 1.08 
 
 .40 
 
 1.08 
 
 .74 
 
 .54 
 
 .28 
 
 .48 
 
 .35 
 
 .35 
 
 .30 
 
 .31 
 
 .48 
 
 .39 
 
 .64 
 
 .45 
 
 .42 
 
 .28 
 
 .30 
 
 .34 
 
 .44 
 
 .30 
 
 .32 
 
 .52 
 
 .40 
 
 .46 
 
 .40 
 
 .42 
 
 .28 
 
 .30 
 
 .32 
 
 .36 
 
 .31 
 
 .30 
 
 .31 
 
 .38 
 
 .40 
 
 .40 
 
 .40 
 
 .49 
 
 .41 
 
 .32 
 
 .35 
 
 .30 
 
 .30 
 
 .30 
 
 .35 
 
 .36 
 
 .35 
 
 .40 
 
 .36 
 
 .31 
 
 .32 
 
 .35 
 
 .30 
 
 .30 
 
 .30 
 
 .32 
 
 .55 
 
 .38 
 
 .40 
 
 .36 
 
 .30 
 
 .32 
 
 .38 
 
 .30 
 
 .30 
 
 .31 
 
 .32 
 
 1.92 
 
 .40 
 
 .45 
 
 .59 
 
 .30 
 
 .32 
 
 .35 
 
 .30 
 
 .58 
 
 .30 
 
 .32 
 
 1.62 
 
 .36 
 
 .40 
 
 .40 
 
 .30 
 
 .32 
 
 .30 
 
 .32 
 
 .36 
 
 .30 
 
 .36 
 
 .56 
 
 .40 
 
 .39 
 
 .36 
 
 .30 
 
 .40 
 
 .31 
 
 .30 
 
 .30 
 
 .30 
 
 .36 
 
 
 .59 
 
 .38 
 
 .30 
 
 .30 
 
 .40 
 
 .30 
 
 .38 
 
 .30 
 
 .30 
 
 .32 
 
 
 .74 
 
 
 .30 
 
 
 .38 
 
 .30 
 
 
 .30 
 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 0.35 
 .30 
 .48 
 .30 
 .30 
 
 .30 
 .38 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .28 
 .30 
 .30 
 
 .30 
 .31 
 .30 
 .30 
 .30 
 
 .30 
 .31 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .30 
 .30 
 .30 
 
 Daily discharge, in second-feet, of Waikapu Stream near Waikapu, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1„ 
 
 0.3 
 .3 
 .3 
 .3 
 .3 
 
 0.2 
 1.2 
 
 .0 
 1.0 
 
 .2 
 
 0.3 
 34.3 
 
 28.0 
 
 1.8. 
 
 .4 
 
 13.0 
 
 16.2 
 24.4 
 87.6 
 63.1 
 
 0.3 
 .3 
 .3 
 .2 
 .2 
 
 0.2 
 .2 
 .2 
 .2 
 .2 
 
 0.2 
 .2 
 .2 
 .2 
 .2 
 
 O.C 
 .3 
 .3 
 .3 
 .3 
 
 0.2 
 .2 
 .2 
 .2 
 .2 
 
 0.2 
 .3 
 .2 
 .2 
 .2 
 
 0.2 
 .2 
 .2 
 .2 
 .2 
 
 0.2 
 .2 
 .5 
 .2 
 .2 
 
 2 
 
 3 
 
 4 
 
 5 
 
142 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, of WaiJcapu Stream near Waikapu, Maui, for 1912 — Contd. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 6 
 
 0.3 
 .3 
 .5 
 .3 
 .3 
 
 .3 
 .3 
 .3 
 .3 
 .3 
 
 .3 
 .3 
 .3 
 .3 
 .3 
 
 .3 
 .3 
 .3 
 .3 
 
 .2 
 
 .2 
 .2 
 .2 
 .3 
 .3 
 .2 
 
 0.2 
 .2 
 .2 
 .2 
 .2 
 
 .5 
 .2 
 .3 
 .2 
 .2 
 
 .2 
 
 .2 
 
 .2 
 
 15.0 
 
 24.4 
 
 12.2 
 
 1.4 
 
 .4 
 
 .3 
 
 .3 
 
 .8 
 
 75.4 
 
 44.8 
 
 1.0 
 
 0.5 
 
 1.4 
 
 .3 
 
 9.8 
 
 27.4 
 
 44.8 
 
 20.0 
 
 20.0 
 
 .8 
 
 .2 
 
 .2 
 2.0 
 11.4 
 
 .7 
 5.8 
 
 2.8 
 .4 
 .3 
 .3 
 .2 
 
 .3 
 .3 
 .3 
 .3 
 
 1.0 
 
 2.8 
 
 13.8 
 
 26.8 
 
 17.5 
 
 6.3 
 
 .5 
 
 .6 
 74.2 
 
 5.8 
 32.2 
 
 5.2 
 
 1.5 
 
 1.8 
 
 2.0 
 
 .4 
 
 .6 
 
 .7 
 .3 
 .3 
 .3 
 .3 
 
 .3 
 .4 
 .3 
 .3 
 .3 
 
 0.2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .5 
 .3 
 
 .3 
 1.0 
 .3 
 .2 
 .2 
 .2 
 
 0.2 
 .2 
 .2 
 .2 
 
 1.2 
 
 .3 
 .2 
 .2 
 .2 
 
 .5 
 
 .2 
 .3 
 .2 
 
 .2 
 .2 
 
 .5 
 .2 
 .2 
 .3 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 0.2 
 
 .2 
 
 .2 
 
 25.6 
 
 1.6 
 
 .3 
 .2 
 
 .7 
 .4 
 .3 
 
 .3 
 .3 
 .3 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .3 
 .3 
 .3 
 
 0.3 
 .3 
 .3 
 .3 
 .3 
 
 .3 
 .3 
 .3 
 .3 
 
 2.8 
 
 .5 
 .3 
 .3 
 .2 
 .2 
 
 .2 
 .4 
 .3 
 .3 
 .3 
 
 .3 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 0.2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .3 
 
 0.2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 
 .4 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 .2 
 .9 
 .3 
 .2 
 .2 
 .2 
 
 0.2 
 
 .2 
 
 .2 
 
 33.6 
 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 23.2 
 
 6.6 
 
 18.0 
 
 .3 
 
 12.2 
 
 .5 
 .6 
 .2 
 .2 
 .2 
 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 
 0.2 
 
 7 
 
 .3 
 
 8 
 
 .2 
 
 9 
 
 .2 
 
 10 
 
 .2 
 
 11 
 
 .2 
 
 12 
 
 .2 
 
 13 
 
 .2 
 
 14 .....:.. 
 
 .2 
 
 15 
 
 .2 
 
 16 
 
 .2 
 
 17 
 
 .2 
 
 18 
 
 .2 
 
 19 
 
 .2 
 
 20 
 
 .2 
 
 21 
 
 .2 
 
 22 
 
 .2 
 
 23 
 
 .2 
 
 24 
 
 .2 
 
 25 
 
 .2 
 
 26 
 
 .2 
 
 27 
 
 .2 
 
 28 
 
 .2 
 
 29 
 
 .2 
 
 30 
 
 .2 
 
 31 
 
 .2 
 
 
 
 Monthly discharge of Waikapu Stream near Waikapu, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April.. 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 0.5 
 75.4 
 44.8 
 87.6 
 
 1.0 
 
 1.2 
 25.6 
 
 2.8 
 .3 
 
 87. 
 
 0.2 
 .2 
 .2 
 .3 
 .2 
 .2 
 .2 
 .2 
 .2 
 .2 
 .2 
 .2 
 
 0.29 
 
 6.28 
 
 7.07 
 
 13.20 
 
 .25 
 
 .26 
 
 1.11 
 
 .36 
 
 .20 
 
 .24 
 
 .33 
 
 .21 
 
 2.70 
 
 17.8 
 
 361.0 
 
 435.0 
 
 785.0 
 
 15.4 
 
 15.5 
 
 68.2 
 
 22.1 
 
 11.9 
 
 14.8 
 
 19.6 
 
 12.9 
 
 1,780.0 
 
 SOUTH SIDE WAIKAPU DITCH NEAR WAIKAPU, MAUI. 
 
 Location. — About 1J miles west of Waikapu, 1 mile below ditch intake, and 5 miles 
 
 southwest of Wailuku. 
 Records available. — November 21, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 9 a. m. and 2 p. m. 
 Channel. — Permanent . 
 
 Discharge measurements. — Made from plank over ditch about 400 feet below gage. 
 Accuracy. — Records good. 
 Cooperation. — Station is maintained in cooperation with Wailuku Sugar Co. 
 
ISLAND OF MAUI. 143 
 
 Discharge measurements of South Side Waihapu ditch near Waihapu, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 8 
 July 9 
 Aug. 30 
 
 J. B. Stewart 
 
 do 
 
 do 
 
 Feet. 
 0.84 
 1.07 
 .65 
 
 Sec.-ft. 
 8.02 
 11.4 
 4.90 
 
 Oct. 18 
 Nov. 20 
 Dec. 11 
 
 J.B.Stewart 
 
 do 
 
 C.T.Bailey 
 
 Feet. 
 
 Q0.59 
 .90 
 .62 
 
 Sec-ft. 
 3.56 
 9.68 
 4.58 
 
 a New gage Oct. 18, 1912. 
 Daily gage height, in feet, of South Side Waihapu ditch near Waihapu, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.60 
 .60 
 .58 
 .58 
 .58 
 
 .58 
 .58 
 .78 
 .61 
 .60 
 
 .58 
 .58 
 .58 
 .58 
 .55 
 
 .55 
 .55 
 .55 
 .55 
 .52 
 
 .52 
 .52 
 .52 
 .59 
 .52 
 
 .50 
 .50 
 .50 
 .54 
 .64 
 .50 
 
 0.51 
 .91 
 
 .82 
 .72 
 .61 
 
 .58 
 .58 
 .55 
 .59 
 .58 
 
 .68 
 .61 
 .66 
 .60 
 .60 
 
 .60 
 
 .60 
 
 .58 
 
 1.05 
 
 1.10 
 
 .95 
 .76 
 .79 
 .70 
 .80 
 
 .90 
 1.11 
 1.06 
 
 .99 
 
 0.89 
 1.05 
 1.01 
 1.00 
 .90 
 
 .90 
 
 .95 
 
 .89 
 
 1.06 
 
 1.11 
 
 1.15 
 1.10 
 1.10 
 1.00 
 .90 
 
 .81 
 .98 
 
 1.06 
 .80 
 
 1.00 
 
 .92 
 .85 
 .81 
 .79 
 
 .74 
 
 .79 
 .79 
 .78 
 .80 
 .95 
 .98 
 
 1.05 
 1.14 
 1.11 
 1.20 
 .95 
 
 1.10 
 1.15 
 1.11 
 .96 
 1.01 
 
 .98 
 1.28 
 
 .99 
 1.12 
 1.02 
 
 1.02 
 
 1.00 
 
 .99 
 
 .98 
 
 .96 
 
 .94 
 .89 
 .89 
 
 .85 
 .82 
 
 .80 
 .82 
 .79 
 .78 
 .80 
 
 0.80 
 .80 
 .80 
 
 .78 
 .78 
 
 .75 
 .75 
 .78 
 .75 
 .74 
 
 .74 
 .71 
 .70 
 .70 
 .70 
 
 .71 
 .70 
 .70 
 
 .70 
 .71 
 
 .70 
 .70 
 .69 
 .90 
 .70 
 
 .79 
 .92 
 .82 
 .82 
 .79 
 .79 
 
 0.71 
 .70 
 .70 
 .70 
 .70 
 
 .70 
 .71 
 .70 
 .70 
 
 .85 
 
 .89 
 .84 
 .85 
 .79 
 .90 
 
 .88 
 .85 
 .79 
 ' .75 
 .70 
 
 .80 
 .71 
 .70 
 .78 
 .71 
 
 .70 
 .70 
 .69 
 .68 
 .68 
 
 0.70 
 .70 
 .70 
 .70 
 .70 
 
 .69 
 .68 
 .68 
 1.10 
 .95 
 
 .81 
 .80 
 .92 
 .80 
 
 .74 
 
 .75 
 
 .74 
 .72 
 .70 
 .70 
 
 .70 
 .69 
 .70 
 .70 
 .70 
 
 .70 
 .70 
 .70 
 .70 
 .70 
 .70 
 
 0.70 
 .70 
 .70 
 .70 
 .70 
 
 .70 
 .70 
 .70 
 .70 
 .70 
 
 .71 
 
 .75 
 .72 
 .70 
 .96 
 
 .89 
 .72 
 .69 
 .66 
 .65 
 
 .65 
 .76 
 .62 
 .62 
 .62 
 
 .71 
 .80 
 .70 
 .69 
 .69 
 .65 
 
 0.65 
 .70 
 .66 
 
 .65 
 .65 
 
 .65 
 .69 
 .65 
 .64 
 .62 
 
 .61 
 .60 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 .61 
 .60 
 .60 
 
 .64 
 .60 
 .65 
 .60 
 .68 
 
 0.60 
 
 .35 
 .61 
 .62 
 .60 
 
 .60 
 
 .58 
 .58 
 .58 
 .58 
 
 .58 
 .60 
 
 .65 
 .78 
 .62 
 
 .60 
 .60 
 .60 
 
 .58 
 .58 
 
 .62 
 .68 
 .60 
 .60 
 .60 
 
 .60 
 .86 
 .75 
 .62 
 .60 
 .68 
 
 0.60 
 .60 
 .58 
 .58 
 
 .58 
 
 .58 
 
 ■ .58 
 
 .58 
 
 .86 
 
 .78 
 
 .65 
 .60 
 .60 
 .58 
 .58 
 
 .96 
 .86 
 .92 
 .81 
 .95 
 
 .82 
 .84 
 .75 
 .70 
 .68 
 
 .65 
 .60 
 .60 
 .60 
 .61 
 
 0.68 
 
 2 
 
 .60 
 
 4 
 
 .78 
 
 4 
 
 .68 
 
 5 
 
 .60 
 
 6 
 
 .60 
 
 7 
 
 .78 
 
 8 
 
 .71 
 
 9 
 
 .66 
 
 10 
 
 .60 
 
 11 
 
 .60 
 
 12 
 
 .60 
 
 13 
 
 .60 
 
 14 
 
 .60 
 
 15 
 
 .60 
 
 16 
 
 .61 
 
 17 
 
 .60 
 
 18 
 
 .60 
 
 19 
 
 .60 
 
 20 
 
 .58 
 
 21 
 
 .58 
 
 22 
 
 .61 
 
 23 
 
 .60 
 
 24 
 
 .58 
 
 25 
 
 .58 
 
 26 
 
 .58 
 
 
 .55 
 
 28 
 
 .58 
 
 
 .56 
 
 30 
 
 .58 
 
 
 .58 
 
 
 
 Daily discharge, in second-feet, of South Side Waihapu ditch near Waihapu, Maui, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 4.2 
 4.2 
 3.9 
 3.9 
 3.9 
 
 3.9 
 3.9 
 
 7.0 
 4.4 
 4.2 
 
 3.9 
 3.9 
 3.9 
 3.9 
 3.5 
 
 2.9 
 9.2 
 
 7.6 
 6.0 
 4.4 
 
 3.9 
 3.9 
 3.5 
 4.1 
 3.9 
 
 5.4 
 4.4 
 5.1 
 4.2 
 4.2 
 
 8.8 
 11.7 
 11.0 
 10.8 
 
 9.0 
 
 9.0 
 9.9 
 8.8 
 11.9 
 12.8 
 
 13.6 
 12.6 
 12.6 
 10.8 
 9.0 
 
 11.7 
 13.4 
 12.8 
 14.5 
 9.9 
 
 12.6 
 13.6 
 12.8 
 10.1 
 11.0 
 
 10.4 
 16.1 
 10.6 
 13.0 
 11.2 
 
 7.3 
 7.3 
 7.3 
 7.0 
 7.0 
 
 6.5 
 6.5 
 7.0 
 6.5 
 6.3 
 
 6.3 
 5.9 
 5.7 
 5.7 
 5.7 
 
 5.9 
 5.7 
 5.7 
 5.7 
 5.7 
 
 5.7 
 5.9 
 5.7 
 5.7 
 8.2 
 
 8.8 
 8.0 
 8.2 
 7.1 
 9.0 
 
 5.7 
 5.7 
 5.7 
 5.7 
 5.7 
 
 5.6 
 5.4 
 5.4 
 12.6 
 9.9 
 
 7.5 
 7.3 
 9.4 
 7.3 
 6.3 
 
 5.7 
 5.7 
 5.7 
 5.7 
 
 5.7 
 
 5.7 
 5.7 
 5.7 
 5.7 
 5.7 
 
 5.9 
 6.5 
 6.0 
 5.7 
 10.1 
 
 5.0 
 5.7 
 5.1 
 5.0 
 5.0 
 
 5.0 
 5.6 
 5.0 
 
 4.8 
 4.5 
 
 4.4 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.2 
 1.0 
 4.4 
 4.5 
 4.2 
 
 4.2 
 3.9 
 3.9 
 3.9 
 3.9 
 
 3.9 
 4.2 
 5.0 
 
 7.0 
 4.5 
 
 4.2 
 4.2 
 3.9 
 3.9 
 3.9 
 
 3.9 
 3.9 
 3.9 
 8.3 
 7.0 
 
 5.0 
 4.2 
 4.2 
 3.9 
 3.9 
 
 5.4 
 
 2 
 
 4.2 
 
 3 
 
 7.0 
 
 4 
 
 5.4 
 
 5 
 
 6 
 
 4.2 
 4.2 
 
 7 
 
 7.0 
 
 8 
 
 5.9 
 
 9 
 
 5.1 
 
 10 
 
 4.2 
 
 11 
 
 4.2 
 
 12 
 
 4.2 
 
 13 
 
 4.2 
 
 14 
 
 4.2 
 
 15 
 
 4.2 
 
144 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily discharge, in second-feet, of South Side Waikapu ditch near Waikapu, Maui, for 
 
 1912— Continued. 
 
 Day., 
 
 17. 
 18. 
 19. 
 20. 
 
 21. 
 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 Jan. 
 
 3.5 
 3.5 
 3.5 
 3.5 
 3.1 
 
 3.1 
 3.1 
 3.1 
 4.1 
 3.1 
 
 2.8 
 2.8 
 2.8 
 3.4 
 4.8 
 2.8 
 
 Feb. 
 
 4.2 
 4.2 
 3.9 
 11.7 
 12.6 
 
 6.7 
 
 7.1 
 5.7 
 7.3 
 
 9.0 
 12.8 
 11.9 
 10.6 
 
 Mar. 
 
 7.5 
 10.4 
 11.9 
 
 7.3 
 10.8 
 
 9.4 
 8.2 
 7.5 
 7.1 
 6.3 
 
 7.1 
 7.1 
 7.0 
 7.3 
 9.9 
 10.4 
 
 Apr. 
 
 11.2 
 10.8 
 10.6 
 10.4 
 10.1 
 
 9.7 
 8.8 
 
 7.3 
 7.6 
 7.1 
 7.0 
 7.3 
 
 May. 
 
 5.9 
 5.7 
 5.7 
 5.7 
 5.9 
 
 5.7 
 5.7 
 5.6 
 9.0 
 
 5.7 
 
 7.1 
 9.4 
 7.6 
 7.6 
 7.1 
 7.1 
 
 June. 
 
 8.7 
 8.2 
 7.1 
 6.5 
 5.7 
 
 7.3 
 5.9 
 5.7 
 7.0 
 5.9 
 
 5.7 
 5.7 
 5.6 
 5.4 
 5.4 
 
 July. 
 
 6.5 
 6.3 
 6.0 
 5.7 
 
 5.7 
 
 5.7 
 5.6 
 5.7 
 5.7 
 5.7 
 
 5.7 
 5.7 
 5.7 
 5.7 
 5.7 
 5.7 
 
 Aug. 
 
 6.0 
 5.6 
 5.1 
 5.0 
 
 5.0 
 6.7 
 4.5 
 4.5 
 4.5 
 
 5.9 
 7.3 
 5.7 
 5.6 
 5.6 
 5.0 
 
 Sept. 
 
 4.2 
 4.2 
 4.2 
 4.2 
 4.2 
 
 4.2 
 4.2 
 4.4 
 4.2 
 4.2 
 
 4.8 
 4.2 
 5.0 
 4.2 
 5.4 
 
 Oct. 
 
 4.2 
 4.2 
 4.2 
 3.9 
 3.9 
 
 4.5 
 5.4 
 4.2 
 4.2 
 4.2 
 
 4.2 
 8.3 
 6.5 
 4.5 
 4.2 
 5.4 
 
 Nov. 
 
 10.1 
 8.3 
 9.4 
 7.5 
 
 7.6 
 8.0 
 6.5 
 
 Dec. 
 
 4.4 
 4.2 
 4.2 
 4.2 
 
 3.9 
 4.4 
 4.2 
 
 3.9 
 3.5 
 3.9 
 3.6 
 3.9 
 3.9 
 
 Monthly discharge of South Side Waihapu ditch near Waikapu, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September...... 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 7.0 
 12.8 
 13.6 
 16.1 
 9.4 
 9.0 
 12.6 
 10.1 
 5.7 
 8.3 
 10.1 
 7.0 
 
 16.1 
 
 2.8 
 2.9 
 6.3 
 7.0 
 5.6 
 5.4 
 5.4 
 4.5 
 4.2 
 1.0 
 3.9 
 3.5 
 
 1.0 
 
 3.73 
 6.56 
 9.60 
 10.50 
 6.60 
 6.56 
 6.39 
 5.87 
 4.59 
 4.47 
 5.62 
 4.44 
 
 24 
 
 229.0 
 377.0 
 590.0 
 625.0 
 406.0 
 390.0 
 393.0 
 361.0 
 273.0 
 275.0 
 334.0 
 273.0 
 
 4,530.00 
 
 PALOLO (EVERETT) DITCH NEAR WAIKAPU, MAUI. 
 
 Location. — About 5| miles southwest of Wailuku and 1J miles west of Waikapu and 
 
 200 feet below ditch intake. 
 Records available. — November 21, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 9 a. m. and 2 p. m.; datum unchanged. 
 Channel. — Permanent . 
 
 Discharge measurements.— Made by wading. 
 Accuracy. — Records good. 
 Cooperation. — Station maintained in cooperation with Wailuku Sugar Co. 
 
 . Discharge measurements of Palolo ditch near Waikapu, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 8 
 July 12 
 Aug. 30 
 
 J. B. Stewart 
 
 do 
 
 Feet. 
 0.98 
 .98 
 
 .89 
 
 Sec.-ft. 
 3.50 
 3.82 
 3.27 
 
 Oct. 18 
 Dec. 11 
 
 J. B. Stewart 
 
 C.T.Bailey 
 
 Feet. 
 0.88 
 .86 
 
 Sec.-ft. 
 3.00 
 2.91 
 
 do 
 
 
ISLAND OF MAUI. 
 
 145 
 
 Daily 
 
 gage height. 
 
 infeet, 
 
 of Palolo ditch near Waikapu, Maui, for 1912. 
 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 
 .98 
 
 1.04 
 
 1.00 
 
 .98 
 
 .98 
 .98 
 .98 
 .98 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .99 
 .98 
 
 .95 
 .95 
 .95 
 .96 
 .98 
 .98 
 
 0.98 
 1.18 
 1.19 
 1.09 
 
 .98 
 
 .98 
 .98 
 .98 
 .99 
 .98 
 
 1.05 
 
 1.01 
 
 1.02 
 
 .99 
 
 .98 
 
 .98 
 
 .98 
 
 .98 
 
 1.14 
 
 1.14 
 
 1.11 
 1.09 
 1.05 
 1.00 
 .98 
 
 1.01 
 1.14 
 1.11 
 1.02 
 
 1.01 
 1.14 
 1.11 
 1.09 
 1.02 
 
 1.04 
 1.09 
 1.00 
 1.09 
 1.14 
 
 1.15 
 1.14 
 1.11 
 1.01 
 
 .98 
 
 .98 
 1.06 
 1.10 
 1.00 
 1.04 
 
 1.02 
 .99 
 .95 
 .94 
 .92 
 
 .94 
 .95 
 .96 
 .95 
 .98 
 .99 
 
 1.09 
 1.10 
 1.15 
 1.20 
 1.11 
 
 .95 
 1.05 
 1.05 
 1.02 
 
 .95 
 
 .96 
 1.16 
 
 .95 
 1.06 
 1.05 
 
 1.04 
 
 1.04 
 
 1.05 
 
 .99" 
 
 .98 
 
 .98 
 .95 
 
 .95 
 
 .98 
 .98 
 
 .95 
 .95 
 
 .98 
 .98 
 .98 
 
 0.98 
 
 .98 
 .96 
 .95 
 .95 
 
 .95 
 .95 
 
 .98 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .96 
 .95 
 .95 
 .95 
 .96 
 
 .95 
 .95 
 .95 
 1.05 
 .98 
 
 .98 
 1.05 
 .98 
 .99 
 .95 
 .95 
 
 0.95 
 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .96 
 .95 
 .95 
 .99 
 
 1.00 
 .96 
 .98 
 .96 
 
 1.00 
 
 .98 
 .95 
 .95 
 .95 
 .94 
 
 .99 
 .96 
 .95 
 1.00 
 .96 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 0.95 
 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 
 .95 
 
 .95 
 
 1.11 
 
 1.01 
 
 .96 
 .95 
 1.00 
 .95 
 .95 
 
 .96 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 0.95 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .95 
 .95 
 .95 
 .95 
 
 .96 
 .98 
 .96 
 .95 
 .99 
 
 .98 
 .95 
 .95 
 .95 
 .95 
 
 .95 
 .98 
 .95 
 .92 
 .92 
 
 .94 
 .98 
 .94 
 .94 
 .96 
 .94 
 
 0.92 
 
 .95 
 .94 
 .90 
 .90 
 
 .92 
 .91 
 .90 
 .90 
 .90 
 
 .90 
 .90 
 .90 
 .90 
 .90 
 
 .90 
 .90 
 .90 
 .90 
 .90 
 
 .90 
 .90 
 .92 
 .90 
 .90 
 
 .91 
 .90 
 .92 
 .90 
 .94 
 
 0.90 
 .98 
 .90 
 .91 
 .90 
 
 .90 
 .90 
 
 .88 
 .88 
 .89 
 
 .89 
 .90 
 .95 
 .98 
 .90 
 
 .90 
 .90 
 .89 
 .88 
 .88 
 
 .92 
 .92 
 .90 
 .90 
 .90 
 
 .90 
 
 1.01 
 
 .98 
 
 .90 
 
 .88 
 .89 
 
 0.88 
 .88 
 
 .88 
 .88 
 .88 
 
 .88 
 .88 
 .89 
 1.18 
 .92 
 
 .90 
 
 .89 
 .88 
 .88 
 .88 
 
 1.08 
 1.01 
 1.08 
 .95 
 1.08 
 
 .96 
 .96 
 .90 
 .90 
 .90 
 
 .90 
 .90 
 
 .88 
 .88 
 .89 
 
 0.91 
 
 2 
 
 .90 
 
 3 
 
 .96 
 
 4 
 
 .90 
 
 5 
 
 .88 
 
 6 
 
 .88 
 
 7 
 
 .99 
 
 8 
 
 .90 
 
 9 
 
 .90 
 
 10 
 
 .88 
 
 11 
 
 .88 
 
 12 
 
 .88 
 
 13.. 
 
 .88 
 
 14 
 
 .88 
 
 15 
 
 .88 
 
 16 
 
 .89 
 
 17 
 
 .90 
 
 18 
 
 .88 
 
 19 
 
 .88 
 
 20 
 
 .88 
 
 21 
 
 .89 
 
 22 
 
 .89 
 
 23 
 
 .88 
 
 24 
 
 .88 
 
 25 
 
 .88 
 
 26 
 
 .88 
 
 27... 
 
 .86 
 
 28 
 
 .85 
 
 29 
 
 .86 
 
 30 
 
 .88 
 
 31 
 
 .88 
 
 
 
 Daily discharge, in second-feet, of Palolo ditch near WaiJcapu, Maui, for 1912. 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.6 
 3.8 
 4.4 
 4.0 
 3.8 
 
 3.8 
 3.8 
 3.8 
 3.8 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.9 
 3.8 
 
 3.6 
 
 3.6 
 3.6 
 3.7 
 3.8 
 3.8 
 
 3.8 
 5.8 
 5.9 
 4.9 
 3.8 
 
 3.9 
 3.8 
 
 4.5 
 4.1 
 4.2 
 3.9 
 3.8 
 
 3.8 
 
 3.8 
 3.8 
 5.4 
 5.4 
 
 5.1 
 4.9 
 4.5 
 4.0 
 3.8 
 
 4.1 
 5.4 
 5.1 
 4.2 
 
 4.1 
 5.4 
 5.1 
 
 4.2 
 
 4.0 
 4.9 
 5.4 
 
 5.5 
 5.4 
 5.1 
 4.1 
 3.8 
 
 3.8 
 
 4.6 
 5.0 
 4.0 
 4.4 
 
 4.2 
 3.9 
 3.6 
 3.5 
 3.4 
 
 3.7 
 3.6 
 3.8 
 3.9 
 
 4.9 
 5.0 
 5.5 
 6.0 
 5.1 
 
 3.6 
 
 4.5 
 4.5 
 4.2 
 3.6 
 
 3.7 
 5.6 
 3.6 
 4.6 
 4.5 
 
 4.4 
 4.4 
 4.5 
 3.9 
 3.8 
 
 3.8 
 3.6 
 3.6 
 3.8 
 3.8 
 
 3.6 
 3.8 
 3.8 
 3.8 
 
 3.8 
 3.8 
 3.7 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.8 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.7 
 3.6 
 3.6 
 3.6 
 3.7 
 
 3.6 
 3.6 
 3.6 
 4.5 
 3.8 
 
 3.8 
 4.5 
 3.8 
 3.9 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.6 
 
 3.7 
 3.6 
 3.6 
 3.9 
 
 4.0 
 3.7 
 3.8 
 3.7 
 4.0 
 
 3.8 
 3.6 
 3.6 
 3.6 
 3.5 
 
 3.9 
 3.7 
 3.6 
 4.0 
 3.7 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 5.1 
 4.1 
 
 3.7 
 3.6 
 4.0 
 3.6 
 3.6 
 
 3.7 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.6 
 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.7 
 3.8 
 3.7 
 3.6 
 
 3.8 
 3.6 
 3.6 
 3.6 
 3.6 
 
 3.8 
 3.6 
 3.4 
 3.4 
 
 3.5 
 
 3.8 
 3.5 
 3.5 
 3.7 
 3.5 
 
 3.4 
 3.6 
 3.5 
 3.2 
 3.2 
 
 3.4 
 3.3 
 
 3.2 
 3.2 
 3.2 
 
 3.2 
 3.2 
 3.2 
 3.2 
 3.2 
 
 3.2 
 
 3.2 
 3.2 
 3.2 
 3.2 
 
 3.2 
 3.2 
 3.4 
 3.2 
 3.2 
 
 3.3 
 3.2 
 3.4 
 3.2 
 3.5 
 
 3.2 
 3.8 
 3.2 
 3.3 
 3.2 
 
 3.2 
 3.2 
 3.0 
 3.0 
 3.1 
 
 3.1 
 3.2 
 3.6 
 3.8 
 3.2 
 
 3.2 
 3.2 
 3.1 
 3.0 
 3.0 
 
 3.4 
 3.4 
 3.2 
 3.2 
 3.2 
 
 3.2 
 
 4.1 
 3.8 
 3.2 
 3.0 
 3.1 
 
 3.0 
 3.0 
 3.0 
 3.0 
 3.0 
 
 3.0 
 3.0 
 3.1 
 
 .5.8 
 3.4 
 
 3.2 
 3.1 
 3.0 
 3.0 
 3.0 
 
 4.8 
 4.1 
 
 4.8 
 3.6 
 
 4.8 
 
 3.7 
 3.7 
 3.2 
 3.2 
 3.2 
 
 3.2 
 3.2 
 3.0 
 3.0 
 3.1 
 
 3.2 
 3.2 
 3.7 
 3.2 
 3.0 
 
 3.0 
 
 3.9 
 3.2 
 3.2 
 3.0 
 
 3.0 
 3.0 
 3.0 
 3.0 
 3.0 
 
 3.1 
 3.2 
 3.0 
 3.0 
 3.0 
 
 3.1 
 3.1 
 3.0 
 3.0 
 3.0 
 
 3.0 
 
 2.9 
 2.8 
 2.9 
 3.0 
 3.0 
 
 14694°— wsp 336—14- 
 
 -10 
 
146 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of Palolo ditch' near Waikapu, Maui, for 1912. 
 
 Month. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean. 
 
 4.4 
 5.9 
 5.5 
 6.0 
 4.5 
 4.0 
 5.1 
 3.9 
 3.6 
 4.1 
 5.8 
 
 6.0 
 
 3.6 
 3.8 
 3.4 
 3.6 
 3.6 
 3.5 
 3.6 
 3.4 
 3.2 
 3.0 
 3.0 
 2.8 
 
 2.8 
 
 3.71 
 4.38 
 4.31 
 4.24 
 3.72 
 
 3^68 
 3.62 
 3.27 
 3.27 
 3.44 
 
 .70 
 
 Run-off 
 (total in 
 acre-feet). 
 
 228 
 252 
 265 
 252 
 229 
 220 
 226 
 223 
 195 
 201 
 205 
 190 
 
 Accu- 
 racy. 
 
 UKUMEHAME STREAM BASIN. 
 TTKUMEHAME STREAM NEAR OLOWALTT, MATH. 
 
 Location. — About 8| miles southeast of Lahaina and 2J miles east of Olowalu and 
 
 125 feet above intake of Olowalu Plantation ditch. 
 Records available. — August 14, 1911, to December 16, 1912. 
 Gage. — Inclined staff; read twice daily, at 10 a. m. and 4 p.m.; destroyed by freshet 
 
 December 16, 1912; not replaced before close of year. 
 Channel. — Shifting . 
 
 Discharge measurements. — Made by wading. 
 Accuracy. — Records good. 
 Cooperation.— Station maintained with Olowalu Sugar Co. 
 
 Discharge measurements of Uhumehame Stream near Olowalu, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 30 
 Dec. 14 
 
 J. B. Stewart 
 
 Feet. 
 0.50 
 .53 
 
 Sec.-ft. 
 5.40 
 
 C. T. Bailey 
 
 4.66 
 
 
 
 
 Daily gage height, in feet, of Ukumehame Stream near Olowalu, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.50 
 .50 
 .50 
 .48 
 .48 
 
 .48 
 .48 
 .52 
 .50 
 .50 
 
 .48 
 .48 
 .48 
 -.48 
 .48 
 
 0.45 
 .72 
 .68 
 .52 
 .50 
 
 .48 
 .45 
 .45 
 .45 
 .45 
 
 .48 
 .50 
 .45 
 .45 
 .45 
 
 0.75 
 .95 
 .85 
 .72 
 .72 
 
 .70 
 .75 
 .68 
 .75 
 .75 
 
 1.05 
 .92 
 .85 
 .72 
 
 .70 
 
 0.82 
 .95 
 .92 
 1.00 
 1.25 
 
 .90 
 
 .95 
 
 .92 
 
 .80" 
 
 .72 
 
 .68 
 .85 
 .72 
 .90 
 .72 
 
 0.55 
 .52 
 .55 
 .55 
 .55 
 
 .55 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 0.55 
 
 .52 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .52 
 
 .55 
 .55 
 .55 
 .55 
 .60 
 
 0.55 
 .55 
 .55 
 .55 
 .55 
 
 .55 
 .55 
 .62 
 .85 
 .65 
 
 .60 
 .60 
 .62 
 • .60 
 .55 
 
 0.50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .65 
 
 0.54 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .51 
 .50 
 .50 
 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 0.55 
 .61 
 .54 
 .52 
 .52 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .58 
 .50 
 
 0.51 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 1.15 
 .65 
 
 .60 
 .58 
 .55 
 .55 
 .55 
 
 0.60 
 
 2 
 
 .55 
 
 3 
 
 .61 
 
 4 
 
 .56 
 
 5 
 
 .52 
 
 6 
 
 .52 
 
 7 
 
 .60 
 
 8 
 
 .60 
 
 9 
 
 .60 
 
 10 
 
 .52 
 
 11 
 
 .52 
 
 12 
 
 .52 
 
 13 
 
 .52 
 
 14 
 
 15 
 
 .55 
 ' .52 
 
ISLAND OF MAUI. 147 
 
 Daily gage height, in feet, of Ukumehame Stream near Olowalu, Maui, for 1912 — Contd. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 0.48 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .50 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .48 
 .45 
 
 0.45 
 
 .45 
 .45 
 .52 
 .80 
 
 .80 
 .61 
 .56 
 .56 
 .56 
 
 .60 
 1.15 
 1.02 
 
 .80 
 
 0.70 
 
 .65 
 .72 
 .70 
 .78 
 
 .72 
 .68 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 .68 
 .72 
 
 0.70 
 .68 
 .70 
 .65 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 
 .58 
 .55 
 .55 
 
 0.50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .58 
 .50 
 
 .52 
 .62 
 .60 
 
 .58 
 .55 
 .55 
 
 0.60 
 .60 
 .60 
 .55 
 .55 
 
 .62 
 .58 
 .55 
 .60 
 .58 
 
 .55 
 .55 
 .55 
 .55 
 .55 
 
 0.58 
 .55 
 .55 
 .55 
 .52 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 0.58 
 .52 
 .50 
 .50 
 .50 
 
 .50 
 .55 
 .50 
 .50 
 .50 
 
 .50 
 .58 
 .55 
 .55 
 .55 
 .55 
 
 0.50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 .51 
 .50 
 .51 
 .50 
 .58 
 
 0.50 
 .50 
 .50 
 .50 
 .50 
 
 .51 
 .52 
 .50 
 .50 
 .50 
 
 .50 
 .55 
 .56 
 .52 
 .52 
 .60 
 
 0.80 
 .85 
 .85 
 .68 
 .80 
 
 .80 
 .75 
 .66 
 .62 
 .60 
 
 .60 
 .60 
 .60, 
 .56 
 .52 
 
 0.55 
 
 17 
 
 
 18 
 
 
 19 
 
 
 20 
 
 
 21 
 
 
 22 
 
 
 23 
 
 
 24 
 
 
 25 
 
 
 26 
 
 
 27 
 
 
 28 
 
 
 29 
 
 
 30 
 
 
 31 
 
 
 
 
 
 OLOWALU STREAM BASIN. 
 OLOWALTT DITCH NO. 1 NEAR OLOWALTT, MATJI. 
 
 Location. — About 7 miles east of Lahaina and 1 mile above Olowalu at Olowalu 
 
 Plantation power house. 
 Records available. — August 12, 1911', to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 5.30 a. m. and 5.30 p. m. ; datum unchanged. 
 Channel. — Permanent. 
 
 Discharge measurements. — Made in flume. 
 Accuracy. — Records fair. 
 Cooperation. — Station maintained in cooperation with Olowalu Sugar Co. 
 
 Discharge measurements of Olowalu ditch No. 1 near Olowalu, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 4 
 4 
 4 
 
 June 29 
 
 J. B. Stewart 
 
 do 
 
 do 
 
 .....do 
 
 Feet. 
 
 0.75 
 
 .24 
 
 .27 
 
 .36 
 
 Sec.-ft. 
 13.8 
 2.38 
 2.71 
 
 4.74 
 
 July 30 
 Sept. 9 
 Dec. 14 
 
 J. B. Stewart 
 
 do 
 
 C.T.Bailey 
 
 Feet. 
 0.26 
 .30 
 .31 
 
 Sec.-ft. 
 3.33 
 4.00 
 4.50 
 
 Daily gage height, in feet, of Olowalu ditch No. 1 near Olowalu, Maui, for 1912. 
 Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 7 
 
 8 
 9 
 10 
 
 11 
 
 12 
 13 
 14 
 15 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 0.40 
 
 0.32 
 
 0.75 
 
 0.75 
 
 0.42 
 
 0.35 
 
 0.40 
 
 0.30 
 
 0.32 
 
 0.38 
 
 0.44 
 
 .40 
 
 .65 
 
 .80 
 
 .75 
 
 .50 
 
 .35 
 
 .40 
 
 .31 
 
 .41 
 
 .40 
 
 .38 
 
 .40 
 
 .75 
 
 .80 
 
 .78 
 
 .45 
 
 .35 
 
 .40 
 
 .32 
 
 .37 
 
 .32 
 
 .35 
 
 .42 
 
 .55 
 
 .75 
 
 .75 
 
 .50 
 
 .35 
 
 .42 
 
 .35 
 
 .35 
 
 .30 
 
 .35 
 
 .38 
 
 .45 
 
 .75 
 
 .42 
 
 .52 
 
 .35 
 
 .41 
 
 .31 
 
 .32 
 
 .32 
 
 .35 
 
 .38 
 
 .40 
 
 .75 
 
 .52 
 
 .50 
 
 .35 
 
 .40 
 
 .30 
 
 .35 
 
 .31 
 
 .36 
 
 .48 
 
 .35 
 
 .72 
 
 .60 
 
 .52 
 
 .35 
 
 .40 
 
 .35 
 
 .35 
 
 .32 
 
 .30 
 
 .50 
 
 .38 
 
 .68 
 
 .55 
 
 .55 
 
 .38 
 
 .50 
 
 .35 
 
 .32 
 
 .32 
 
 .32 
 
 .42 
 
 .35 
 
 .70 
 
 .42 
 
 .55 
 
 .35 
 
 .65 
 
 .34 
 
 .31 
 
 .30 
 
 .65 
 
 .40 
 
 .35 
 
 .85 
 
 .35 
 
 .50 
 
 .38 
 
 .62 
 
 .35 
 
 .31 
 
 .30 
 
 .58 
 
 .32 
 
 .62 
 
 .82 
 
 .35 
 
 .50 
 
 .35 
 
 .50 
 
 .39 
 
 .30 
 
 .30 
 
 .48 
 
 .30 
 
 .45 
 
 .78 
 
 .40 
 
 .45 
 
 .35 
 
 .50 
 
 .35 
 
 .30 
 
 .35 
 
 .40 
 
 .30 
 
 .42 
 
 .80 
 
 .68 
 
 .40 
 
 .45 
 
 .58 
 
 .32 
 
 .30 
 
 .36 
 
 .36 
 
 .38 
 
 .40 
 
 .82 
 
 .62 
 
 .38 
 
 .45 
 
 .49 
 
 .36 
 
 .30 
 
 .52 
 
 .35 
 
 .38 
 
 .38 
 
 .75 
 
 .60 
 
 .40 
 
 .48 
 
 .47 
 
 .52 J 
 
 .30 
 
 .39 
 
 .35 
 
 0.42 
 .38 
 .55 
 .42 
 .38 
 
 .35 
 .58 
 .48 
 .40 
 .36 
 
 .35 
 
 .32 
 .32 
 
148 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Olowalu ditch No. 1 near Olowalu, Maui, for 1912 — Con. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 0.38 
 .35 
 .32 
 .35 
 .35 
 
 .38 
 .35 
 .35 
 .45 
 .35 
 
 .32 
 .30 
 .25 
 .25 
 .30 
 .32 
 
 0.30 
 .40 
 .38 
 .80 
 .75 
 
 .75 
 .78 
 .72 
 .75 
 .75 
 
 .72 
 .80 
 .80 
 .75 
 
 0.70 
 
 .78 
 .75 
 .70 
 .78 
 
 .75 
 .70 
 .68 
 .62 
 
 .55 
 
 .58 
 .58 
 .58 
 .62 
 .78 
 .80 
 
 0.65 
 .60 
 
 .55 
 .55 
 .52 
 
 .58 
 .55 
 .50 
 .50 
 .50 
 
 .50 
 
 .48 
 .40 
 .45 
 .42 
 
 0.42 
 .45 
 
 .48 
 .42 
 .42 
 
 .45 
 
 .45 
 .40 
 .45 
 .38 
 
 .55 
 .64 
 .58 
 .58 
 .45 
 .45 
 
 0.45 
 
 .40 
 .38 
 .40 
 .38 
 
 .38 
 .38 
 .35 
 .48 
 .36 
 
 .35 
 .35 
 .35 
 .38 
 .40 
 
 0.48 
 
 .45 
 .45 
 .41 
 .40 
 
 .44 
 .44 
 .44 
 .44 
 .42 
 
 .41 
 .40 
 .40 
 .37 
 .34 
 .30 
 
 0.45 
 .36 
 .32 
 .30 
 .30 
 
 .30 
 .39 
 .35 
 .31 
 .30 
 
 .50 
 .50 
 .37 
 .37 
 .38 
 .35 
 
 0.29 
 .29 
 .29 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .29 
 .27 
 
 .29 
 .30 
 .32 
 
 .37 
 
 .51 
 
 0.36 
 .34 
 .30 
 .30 
 
 .29 
 
 .39 
 .45 
 .39 
 .36 
 .34 
 
 .35 
 
 .45 
 .49 
 .39 
 .38 
 .59 
 
 0.49 
 
 .58 
 .60 
 .56 
 .52 
 
 .58 
 .62 
 .58 
 .49 
 
 .44 
 
 .42 
 .38 
 .38 
 .35 
 .36 
 
 34 
 
 17 
 
 32 
 
 18 
 
 39 
 
 19 
 
 
 20. 
 
 42 
 
 21 
 
 .52 
 
 22 
 
 .61 
 
 23 
 
 .60 
 
 24 
 
 .55 
 
 25 
 
 .58 
 
 26 
 
 .52 
 
 27 
 
 .45 
 
 28 
 
 .42 
 
 29.. 
 
 .40 
 
 30 
 
 .39 
 
 31 
 
 .36 
 
 
 
 Daily discharge, in second-feet, of Olowalu ditch No. 1 near Olowalu, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 4.5 
 4.5 
 4.5 
 4.9 
 4.2 
 
 4.2 
 6.1 
 6.5 
 4.9 
 4.5 
 
 3.3 
 3.0 
 3.0 
 4.2 
 
 4.2 
 
 4.2 
 3.8 
 3.3 
 3.8 
 
 3.8 
 
 4.2 
 3.8 
 3.8 
 5.5 
 3.8 
 
 3.3 
 3.0 
 2.5 
 2.5 
 3.0 
 3.3 
 
 3.3 
 
 10.7 
 14.8 
 7.8 
 5.5 
 
 4.5 
 3.8 
 4.2 
 3.8 
 3.8 
 
 9.7 
 5.5 
 4.9 
 4.5 
 4.2 
 
 3.0 
 4.5 
 4.2 
 17.0 
 14.8 
 
 14.8 
 16.1 
 13.4 
 14.8 
 14.8 
 
 13.4 
 17.0 
 17.0 
 14.8 
 
 14.8 
 17.0 
 17.0 
 14.8 
 14.8 
 
 14.8 
 13.4 
 11.8 
 12.5 
 19.5 
 
 18.0 
 16.1 
 17.0 
 18.0 
 14.8 
 
 12.5 
 16.1 
 14.8 
 12.5 
 16.1 
 
 14.8 
 12.5 
 11.8 
 9.7 
 
 7.8 
 
 8.5 
 8.5 
 8.5 
 9.7 
 16.1 
 17.0 
 
 14.8 
 14.8 
 16.1 
 14.8 
 4.9 
 
 7.0 
 9.0 
 7.8 
 4.9 
 3.8 
 
 3.8 
 4.5 
 11.8 
 9.7 
 9.0 
 
 10.8 
 9.0 
 7.8 
 7.8 
 7.0 
 
 8.5 
 7.8 
 6.5 
 6.5 
 6.5 
 
 6.5 
 6.1 
 4.5 
 5.5 
 4.9 
 
 4.9 
 6.5 
 5.5 
 6.5 
 7.0 
 
 6.5 
 7.0 
 7.8 
 7.8 
 6.5 
 
 6.5 
 5.5 
 4.5 
 4.2 
 4.5 
 
 4.9 
 5.5 
 6.1 
 4.9 
 4.9 
 
 5.5 
 5.5 
 4.5 
 5.5 
 4.2 
 
 7.8 
 10.4 
 8.5 
 8.5 
 5.5 
 5.5 
 
 3.8 
 3.8 
 3.8 
 3.8 
 3.8 
 
 3.8 
 3.8 
 4.2 
 3.8 
 4.2 
 
 3.8 
 3.8 
 
 5.5 
 5.5 
 6.1 
 
 5.5 
 4.5 
 •4.2 
 4.5 
 4.2 
 
 4.2 
 4.2 
 3.8 
 6.1 
 3.9 
 
 3.8 
 3.8 
 3.8 
 5.2 
 5.5 
 
 5.5 
 5.5 
 5.5 
 5.9 
 5.7 
 
 5.5 
 5.5 
 7.5 
 12.2 
 11.2 
 
 7.5 
 7.5 
 9.9 
 7.3 
 6.9 
 
 7.1 
 6.5 
 6.5 
 5.7 
 5.5 
 
 6*3 
 6.3 
 6.3 
 6.3 
 
 5.9 
 
 5.7 
 5.5 
 5.5 
 
 5.0 
 
 4.6 
 4.0 
 
 4.0 
 4.2 
 4.3 
 
 4.8 
 4.2 
 
 4.0 
 4.8 
 4.8 
 
 4.6 
 4.8 
 
 5.4 
 4.8 
 4.3 
 4.9 
 8.1 
 
 6.5 
 4.9 
 4.3 
 4.0 
 4.0 
 
 4.0 
 5.4 
 4.8 
 4.2 
 4.0 
 
 7.5 
 7.5 
 5.0 
 5.0 
 5.2 
 4.8 
 
 4.3 
 5.7 
 5.0 
 4.8 
 4.3 
 
 4.8 
 4.8 
 4.3 
 4.2 
 4.2 
 
 4.0 
 4.0 
 4.0 
 4.0 
 4.0 
 
 3.9 
 3.9 
 3.9 
 
 4.0 
 4.0 
 
 4.0 
 4.0 
 4.0 
 3.9 
 3.7 
 
 3.9 
 4.0 
 4.3 
 5.0 
 
 7.8 
 
 5.2 
 5.5 
 4.3 
 4.0 
 4.3 
 
 4.2 
 4.3 
 4.3 
 4.0 
 4.0 
 
 4.0 
 4.8 
 4.9 
 8.1 
 5.4 
 
 4.9 
 4.6 
 4.0 
 4.0 
 3.9 
 
 5.4 
 6.5 
 5.4 
 4.9 
 4.6 
 
 4.8 
 6.5 
 7.3 
 5.4 
 5.2 
 10.2 
 
 6.3 
 5.2 
 
 4.8 
 4.8 
 4.8 
 
 4.9 
 4.0 
 4.3 
 12.2 
 9.9 
 
 7.1 
 5.5 
 4.9 
 
 4.8 
 4.8 
 
 7.3 
 9.9 
 10.5 
 9.3 
 8.1 
 
 9.9 
 11.2 
 9.9 
 7.3 
 6.3 
 
 5.9 
 5.2 
 5.2 
 4.8 
 4.9 
 
 5.9 
 
 2 
 
 5.2 
 
 3 
 
 9.0 
 
 4 
 
 5.9 
 
 5 
 
 5.2 
 
 6 
 
 5.2 
 
 7 
 
 9.9 
 
 8 
 
 7.1 
 
 9 
 
 5.5 
 
 10 
 
 4.9 
 
 11 
 
 4.8 
 
 12 
 
 4.3 
 
 13 
 
 4.3 
 
 14 
 
 4.3 
 
 15 
 
 4.3 
 
 16 
 
 4.6 
 
 17 
 
 4.3 
 
 18 
 
 5.4 
 
 19 
 
 5.9 
 
 20 
 
 5.9 
 
 21 
 
 8.1 
 
 22 
 
 10.8 
 
 23 
 
 10.5 
 
 24 
 
 9.0 
 
 25 
 
 9.9 
 
 26 
 
 8.1 
 
 27 
 
 6.5 
 
 28 
 
 5.9 
 
 29 
 
 5.5 
 
 30 
 
 5.4 
 
 31 
 
 4.9 
 
 
 
ISLAND OF MAUI. 149 
 
 Monthly discharge ofOlowalu ditch No. 1 near Olowalu, Maui, for 1912. 
 
 
 Discharge in second-feet. 
 
 Run-off 
 (tttal in 
 acre-feet). 
 
 Accu- 
 
 Month. 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 
 6.5 
 17.0 
 19.5 
 16.1 
 10.4 
 
 6.1 
 12.2 
 
 8.1 
 
 7.8 
 10.2 
 12.2 
 10.8 
 
 2.5 
 3.0 
 7.8 
 3.8 
 4.2 
 3.8 
 4.0 
 4.0 
 3.7 
 3.9 
 4.0 
 4.3 
 
 4.00 
 9.33 
 13.9 
 8.08 
 6.16 
 4.36 
 6.51 
 4.94 
 4.36 
 5.13 
 6.80 
 6.34 
 
 246.0 
 537.0 
 855.0 
 481.0 
 379.0 
 259.0 
 400.0 
 304.0 
 259.0 
 315.0 
 405.0 
 390.0 
 
 A. 
 
 
 A. 
 
 
 A. 
 
 
 A. 
 
 
 A. 
 
 
 B. 
 
 July . 
 
 A. 
 
 
 A. 
 
 
 A. 
 
 October 
 
 A. 
 
 November 
 
 A. 
 
 
 A. 
 
 
 
 
 19.5 
 
 2.5 
 
 6.65 
 
 4,830.0 
 
 
 
 
 LAUNIUPOKO STREAM BASIN. 
 LATJNIUPOKO STREAM NEAR LAHAINA, MAUL 
 
 Location. — About 5J miles southeast of Lahaina, 1 mile above storage reservoir, and 
 
 about 175 feet above ditch intake of Pioneer Mill Co. 
 Records available. — July 25, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 8.30 a. m. and 4.30 p.m.; datum unchanged. 
 Channel. — Permanent . 
 
 Discharge measurements. — Made by wading. 
 Accuracy. — Records very good. 
 Cooperation. — Station is maintained in cooperation with Pioneer Mill Co. 
 
 Discharge measurements of Launiupoho Stream near Lahaina, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar. 3 
 July 31 
 
 J. B. Stewart 
 
 do..- 
 
 do 
 
 Feet. 
 0.69 
 .41 
 .40 
 
 Sec.-ft. 
 
 3.19 
 
 1.03 
 
 .93 
 
 Sept. 10 
 Nov. 23 
 Dec. 14 
 
 J. B. Stewart 
 
 do 
 
 Feet. 
 0.40 
 .42 
 .41 
 
 Sec.-ft. 
 0.94 
 1.11 
 
 Sept. 10 
 
 C.T.Bailey 
 
 .97 
 
 Daily gage height, in feet, of Launiupoho Stream near Lahaina, Maui, for 1912. 
 
 [O. Brecht, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 0.45 
 
 0.45 
 
 0.50 
 
 0.55 
 
 0.50 
 
 0.45 
 
 0.45 
 
 0.40 
 
 0.40 
 
 0.40 
 
 0.42 
 
 .45 
 
 .65 
 
 .58 
 
 .68 
 
 .50 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .45 
 
 .58 
 
 .69 
 
 .72 
 
 .50 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .45 
 
 .50 
 
 .60 
 
 .62 
 
 .50 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .45 
 
 .40 
 
 .58 
 
 .74 
 
 .64 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .45 
 
 .40 
 
 .50 
 
 .60 
 
 .50 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .45 
 
 .42 
 
 .55 
 
 .78 
 
 .50 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .45 
 
 .52 
 
 .52 
 
 .80 
 
 .50 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .45 
 
 .50 
 
 .62 
 
 .68 
 
 .50 
 
 .45 
 
 .58 
 
 .40 
 
 .40 
 
 .40 
 
 .78 
 
 .45 
 
 .52 
 
 .70 
 
 .62 
 
 .49 
 
 .45 
 
 .48 
 
 .40 
 
 .40 
 
 .40 
 
 .44 
 
 .50 
 
 .42 
 
 1.15 
 
 .60 
 
 .49 
 
 .45 
 
 .45 
 
 .42 
 
 .40 
 
 .48 
 
 .40 
 
 .50 
 
 .45 
 
 .64 
 
 .64 
 
 .49 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .48 
 
 .45 
 
 .55 
 
 .60 
 
 .49 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .45 
 
 .45 
 
 .50 
 
 .67 
 
 .47 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 .45 
 
 .45 
 
 .50 
 
 .60 
 
 .47 
 
 .45 
 
 .45 
 
 .40 
 
 .40 
 
 .40 
 
 .40 
 
 Dec. 
 
 1. 
 2. 
 3. 
 4 
 5. 
 
 6. 
 
 7. 
 
 8. 
 
 9 
 
 1Q 
 
 11 
 12 
 13 
 14 
 15 
 
 0.40 
 .40 
 .42 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
150 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily gage height, in feet, of Launiupoko Stream near Lahaina, Maui, for 1912 — Contd. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 0.45 
 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .45 
 .45 
 
 0.45 
 
 .45 
 .45 
 
 .58 
 .82 
 
 .72 
 .60 
 .50 
 .65 
 .50 
 
 .50 
 .85 
 .60 
 .50 
 
 0.50 
 
 .58 
 .60 
 .55 
 .52 
 
 .52 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .60 
 .64 
 
 0.62 
 
 .60 
 .60 
 .58 
 .52 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 0.45 
 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .47 
 .45 
 
 .50 
 .60 
 .54 
 .50 
 .50 
 .48 
 
 0.45 
 
 .45 
 .45 
 .40 
 .40 
 
 .42 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .45 
 
 0.45 
 
 .45 
 
 .45 
 .45 
 .45 
 
 .45 
 .42 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.40 
 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .45 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.40 
 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .44 
 .40 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .42 
 .40 
 .40 
 .40 
 .40 
 .60 
 
 0.40 
 
 .48 
 .48 
 .42 
 .42 
 
 .57 
 .44 
 .42 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 0.40 
 
 17 
 
 .40 
 
 18 
 
 .40 
 
 19 
 
 .42 
 
 20 
 
 .40 
 
 21 
 
 .48 
 
 22 
 
 .70 
 
 23 
 
 .70 
 
 24 : . . 
 
 .42 
 
 25 
 
 .40 
 
 26 
 
 .40 
 
 27 
 
 .40 
 
 28 
 
 .40 
 
 29 
 
 .40 
 
 30 
 
 .40 
 
 31 
 
 .40 
 
 
 
 Daily discharge, in second-feet, of Launiupoko Stream near Lahaina, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.6 
 1.6 
 1.5 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 2.8 
 2.2 
 1.6 
 1.0 
 
 1.0 
 1.1 
 
 1.8 
 1.6 
 1.8 
 
 1.1 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 2.2 
 4.5 
 
 3.5 
 2.4 
 1.6 
 2.8 
 1.6 
 
 1.6 
 4.8 
 2.4 
 1.6 
 
 1.6 
 2.2 
 3.2 
 2.4 
 2.2 
 
 1.6 
 2.0 
 1.8 
 2.6 
 3.3 
 
 8.2 
 2.8 
 2.0 
 1.6 
 1.6 
 
 1.6 
 2.2 
 2.4 
 
 2.0 
 1.8 
 
 1.8 
 1.6 
 1.6 
 1.6 
 ! 1.6 
 
 1.6 
 1.6 
 1.6 
 1.6 
 2.4 
 2.8 
 
 2.0 
 3.1 
 3.5 
 2.6 
 3.7 
 
 2.4 
 4.1 
 4.3 
 3.1 
 2.6 
 
 2.4 
 2.8 
 2.4 
 3.0 
 
 2.4 
 
 2.6 
 2.4 
 2.4 
 
 2.2 
 1.8 
 
 1.6 
 1.6 
 1.6 
 1.6 
 1.6 
 
 1.6 
 1.6 
 1.6 
 1.6 
 1.6 
 
 1.6 
 1.6 
 1.6 
 1.6 
 2.8 
 
 1.6 
 1.6 
 1.6 
 1.6 
 1.5 
 
 1.5 
 1.5 
 1.5 
 1.4 
 1.4 
 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.4 
 1.3 
 
 1.6 
 2.4 
 1.9 
 1.6 
 1.6 
 1.5 
 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.0 
 1.0 
 
 1.1 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 2.2 
 1.5 
 
 1.3 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 1.3 
 
 1.3 
 1.3 
 
 1.3 
 1.1 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.1 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.3 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.2 
 1.0 
 
 
 
 1:0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.5 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.1 
 
 1.0 
 1.0 
 1.0 
 1.0 
 ,4 
 
 1.1 
 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 4.1 
 1.2 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.5 
 1.5 
 
 1.1 
 1.1 
 
 2.2 
 1.2 
 1.1 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 
 2 
 
 1.0 
 
 3 
 
 1.1 
 
 4 
 
 1.0 
 
 5 '. 
 
 1.0 
 
 6 
 
 1.0 
 
 7 
 
 1.0 
 
 8 . 
 
 1.0 
 
 9 
 
 1.0 
 
 10 
 
 1.0 
 
 11 
 
 1.0 
 
 12 
 
 1.0 
 
 13 
 
 1.0 
 
 14 
 
 1.0 
 
 15 
 
 1.0 
 
 16 
 
 1.0 
 
 17 
 
 1.0 
 
 18 
 
 1.0 
 
 19 
 
 1.1 
 
 20 
 
 21 
 
 1.0 
 1.5 
 
 22.... 
 
 3.3 
 
 23 
 
 3.3 
 
 24 
 
 1.1 
 
 25 
 
 1.0 
 
 26 
 
 1.0 
 
 27 
 
 1.0 
 
 28 
 
 1.0 
 
 29 
 
 1.0 
 
 30 
 
 1.0 
 
 31 
 
 1.0 
 
 
 
ISLAND OF MAUI. 151 
 
 Monthly discharge of Launiwpoho Stream near Lahaina, Maui, for 1912. 
 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Month: 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 
 1.6 
 4.8 
 8.2 
 4.3 
 2.8 
 1.3 
 2.2 
 1.3 
 1.2 
 2.4 
 4.1 
 3.3 
 
 1.3 
 1.0 
 1.6 
 1.6 
 1.3 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.33 
 
 1.91 
 2.22 
 2.39 
 1.55 
 1.27 
 1.24 
 1.01 
 1.01 
 1.06 
 1.20 
 1.17 
 
 81.8 
 110.0 
 136.0 
 142.0 
 95.3 
 75.6 
 76.2 
 62.1 
 60.1 
 65.2 
 71.4 
 71.9 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 July 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 B. 
 
 
 
 The year 
 
 8.2 
 
 1.0 
 
 1.45 
 
 1,050.0 
 
 
 
 
 KAUAULA STREAM BASIN. 
 KAUAULA STREAM NEAR LAHAINA, MAUI. 
 
 Location. — About 3 miles east of Lahaina, 200 feet above Kauaula ditch intake, 
 
 which is the uppermost diversion. 
 Records available. — March 7 to December 31, 1912; also discharge measurements 
 
 in 1911. 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p. m. 
 Channel. — Practically permanent. 
 Discharge measurements. — Made by wading at low-water stages in Kauaula 
 
 ditch, which carries all the normal flow. 
 Accuracy. — Records good. 
 Cooperation. — Station is maintained in cooperation with the Pioneer Mill Co. 
 
 Discharge measurements of Kauaula Stream near Lahaina, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 June 27 
 
 J. B. Stewart 
 
 Feet. 
 
 0.21 
 
 .16 
 
 .12 
 
 .09 
 
 Sec.-ft. 
 7.18 
 
 Aug. 1 
 Sept. 11 
 Dec. 13 
 
 ..do 
 
 6.00 
 
 do 
 
 5.71 
 
 C. T. Bailey 
 
 6.05 
 
 
 
 
 Daily gage height, in feet, of Kauaula Stream near Lahaina, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 0.98 
 
 .75 
 .75 
 .75 
 .98 
 
 .98 
 .98 
 .98 
 .90 
 
 .85 
 
 .78 
 .78 
 .73 
 .72 
 .70 
 
 0.28 
 .43 
 .28 
 .28 
 .33 
 
 .45 
 .40 
 .43 
 .23 
 
 .23 
 
 .25 
 .23 
 .23 
 .23 
 .23 
 
 0.25 
 .25 
 .25 
 .25 
 .25 
 
 .20 
 .20 
 .30 
 .23 
 .23 
 
 .23 
 .23 
 .23 
 .23 
 
 .25 
 
 0.20 
 
 .17 
 .17 
 .17 
 .20 
 
 .17 
 .17 
 .15 
 .55 
 .27 
 
 .20 
 .20 
 .23 
 .17 
 .17 
 
 0.15 
 .15 
 .15 
 .12 
 .12 
 
 .12 
 .17 
 .15 
 .20 
 .35 
 
 .20 
 .20 
 
 .17 
 .27 
 .27 
 
 0.12 
 .17 
 .17 
 .12 
 .12 
 
 .15 
 .31 
 .15 
 .12 
 .12 
 
 .12 
 .12 
 .12 
 .12 
 .12 
 
 0.20 
 
 .17 
 .17 
 .17 
 .17 
 
 .17 
 .20 
 .17 
 .17 
 .17 
 
 .17 
 .17 
 .17 
 .23 
 .20 
 
 0.30 
 
 .20 
 .17 
 .17 
 .17 
 
 .17 
 .17 
 .15 
 .30 
 .30 
 
 .20 
 .16 
 .15 
 .15 
 .15 
 
 20 
 
 2 
 
 
 
 
 .23 
 
 3 
 
 
 
 
 .25 
 
 4 
 
 
 
 
 .13 
 
 5 
 
 
 
 
 .13 
 
 6 
 
 
 
 
 .13 
 
 7 
 
 
 
 0.95 
 .77 
 .85 
 .75 
 
 1.50 
 1.00 
 1.00 
 .78 
 .52 
 
 .20 
 
 8 
 
 
 
 .17 
 
 9 
 
 
 
 .17 
 
 10 
 
 
 
 .12 
 
 11 
 
 
 
 .12 
 
 12 
 
 
 
 .12 
 
 13 
 
 
 
 12 
 
 14 
 
 
 
 12 
 
 15 
 
 
 
 .12 
 
152 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Kauaula Stream near Lahaina, Maui, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 
 
 0.45 
 
 .45 
 .80 
 .52 
 .50 
 
 .48 
 .45 
 .45 
 .45 
 .45 
 
 .40 
 .40 
 .37 
 .45 
 1.25 
 1.15 
 
 0.85 
 .73 
 
 .72 
 .55 
 .43 
 
 .43 
 .38 
 .40 
 .37 
 .33 
 
 .40 
 .34 
 .31 
 .38 
 .30 
 
 0.23 
 .23 
 
 .23 
 
 .28 
 .28 
 
 .23 
 .23 
 .23 
 .23 
 .23 
 
 .23 
 .80 
 .35 
 .28 
 .25 
 .25 
 
 0.23 
 .23 
 .23 
 .20 
 .20 
 
 .20 
 .23 
 .23 
 .38 
 
 .28 
 
 .23 
 .23 
 .23 
 .20 
 .20 
 
 0.17 
 .17 
 .17 
 .17 
 .17 
 
 .17 
 
 .17 
 .17 
 .17 
 .17 
 
 .17 
 .17 
 .15 
 .15 
 .15 
 .15 
 
 0.27 
 .20 
 .17 
 .17 
 .25 
 
 .20 
 .20 
 .17 
 .17 
 .17 
 
 .17 
 .27 
 .20 
 .20 
 .17 
 .17 
 
 0.12 
 .10 
 .10 
 .10 
 .12 
 
 .12 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .12 
 .53 
 
 0.17 
 
 .17 
 .17 
 .17 
 .17 
 
 .17 
 .17 
 .15 
 .12 
 .12 
 
 .30 
 
 .30 
 
 .18 
 
 • .20 
 
 .17 
 .90 
 
 0.15. 
 .40 
 .15 
 .28 
 .15 
 
 .20 
 .30 
 .30 
 .15 
 .18 
 
 .18 
 .15 
 .15 
 .15 
 .15 
 
 12 
 
 17 
 
 
 
 75 
 
 18 
 
 
 
 .75 
 
 .20 
 .13 
 
 .17 
 
 1 20 
 
 19 
 
 
 
 20 
 
 
 
 21 
 
 
 
 22 
 
 
 
 23 
 
 
 
 1.10 
 .30 
 .23 
 
 .30 
 
 24 
 
 
 
 25 
 
 
 
 26 
 
 
 
 
 
 
 .23 
 
 .15 
 
 .15 
 
 15 
 
 28 
 
 
 
 29 
 
 
 
 30 
 
 
 
 
 
 
 .15 
 
 
 
 
 
 KATTATTLA DITCH NEAR LAHAINA, MAUI. 
 
 Location. — About 3 miles east of Lahaina. It is 100 feet below ditch intake, which 
 
 is uppermost on the stream. 
 Records available.— October 16, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; datum unchanged. 
 Channel. — Straight wooden flume, 3 feet wide. 
 Discharge measurements. — Made in flume at gage. 
 Accuracy. — Very good. 
 Cooperation. — Station maintained in cooperation with Pioneer Mill Co. 
 
 Discharge measurements of Kauaula ditch near Lahaina, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 
 J. B. Stewart 
 
 Feet. 
 0.45 
 .78 
 .71 
 .68 
 .75 
 .65 
 
 Sec.-ft. 
 2.82 
 
 
 do i 
 
 7.18 
 
 Aug. .1 
 Sept. 11 
 Nov. 25 
 
 ...do 
 
 6.00 
 
 ...do 
 
 5.71 
 
 do 
 
 6.91 
 
 Dec. 13 
 
 C . T. B ailey 
 
 6.05 
 
 
 
 
 Daily gage height, in feet, of Kauaula ditch near Lahaina, Maui, for 1912. 
 [Nakayama, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.45 
 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .45 
 
 0.45 
 .45 
 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .45 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.05 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.20 
 
 1.05 
 .75 
 .75 
 .75 
 
 1.14 
 
 1.11 
 1.70 
 1.15 
 1.08 
 .95 
 
 0.88 
 
 1.05 
 
 .88 
 
 .88 
 
 1.00 
 
 1.10 
 
 .93 
 
 1.10 
 
 .87 
 .86 
 
 0.80 
 .80 
 .80 
 .80 
 .80 
 
 .78 
 .78 
 .93 
 .83 
 .80 
 
 0.75 
 
 .72 
 .72 
 .72 
 .72 
 
 .75 
 
 .75 
 
 .70 
 
 1.15 
 
 .82 
 
 0.70 
 
 .70 
 .70 
 .68 
 .67 
 
 .67 
 .70 
 .67 
 .90 
 .90 
 
 0.67 
 .70 
 .70 
 .70 
 .70 
 
 .70 
 1.02 
 .70 
 .70 
 .70 
 
 0.71 
 .85 
 .70 
 .70 
 .70 
 
 .70 
 .70 
 .75 
 .70 
 .70 
 
 1.00 
 .80 
 .73 
 
 .70 
 .70 
 
 .70 
 
 .70 
 
 .70 
 
 1.00 
 
 1.00 
 
 0.70 
 
 2 
 
 .95 
 
 3 
 
 1.00 
 
 4 
 
 1.02 
 
 5 
 
 .82 
 
 6 
 
 .72 
 
 7 
 
 .75 
 
 8 
 
 .92 
 
 9 
 
 .80 
 
 10 
 
 .75 
 
ISLAND OF MAUI. 153 
 
 Daily gage height, in feet, of Kauaula ditch near Lahaina, Maui, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 11 
 
 0.45 
 .45 
 
 .45 
 .45 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .45 
 
 .45 
 
 .45 
 .45 
 .45 
 .45 
 .45 
 
 0.95 
 
 .95 
 
 .96 
 
 1.00 
 
 1.00 
 
 1.10 
 1.10 
 
 .89 
 .85 
 .85 
 
 .93 
 
 .97 
 
 1.05 
 
 1.05 
 
 1.05 
 
 1.10 
 
 1.10 
 
 .99 
 
 .95 
 
 1.05 
 1.05 
 1.05 
 1.05 
 1.00 
 
 .93 
 
 .93 
 
 .95 
 
 1.05 
 
 1.05 
 
 1.05 
 
 .97 
 .90 
 .87 
 .85 
 
 .83 
 .83 
 .85 
 .80 
 .90 
 1.10 
 
 0.75 
 1.05 
 1.10 
 1.10 
 1.10 
 
 1.10 
 
 .1.10 
 
 1.05 
 
 .98 
 
 .90 
 
 .90 
 .90 
 
 .87 
 .98 
 .95 
 
 .98 
 .93 
 .90 
 .90 
 .90 
 
 0.83 
 .83 
 
 .83 
 .83 
 .80 
 
 .80 
 .80 
 
 !90 
 
 .80 
 
 .90 
 .80 
 .80 
 .80 
 .80 
 
 .80 
 1.20 
 .95 
 .83 
 .80 
 .80 
 
 0.80 
 
 .77 
 .75 
 .70 
 .83 
 
 .77 
 .75 
 .70 
 .70 
 .70 
 
 .73 
 .73 
 1.20 
 .80 
 .73 
 
 .75 
 .75 
 .75 
 .73 
 .73 
 
 0.75 
 
 .75 
 .75 
 .70 
 .70 
 
 .70 
 .75 
 .70 
 .70 
 .70 
 
 ;.70 
 T70 
 .70 
 .70 
 .70 
 
 .70 
 .70 
 .70 
 .70 
 .70 
 .70 
 
 0.70 
 .70 
 .70 
 .75 
 .90 
 
 .90 
 .88 
 .70 
 .70 
 .80 
 
 .72 
 .70 
 .70 
 .70 
 .70 
 
 .80 
 .70 
 .70 
 .70 
 .70 
 .70 
 
 0.70 
 .70 
 .70 
 .67 
 .67 
 
 .67 
 .65 
 .65 
 .65 
 .73 
 
 .70 
 .67 
 .67 
 .67 
 .67 
 
 .65 
 .65 
 .70 
 .70 
 1.20 
 
 0.70 
 .70 
 .70 
 .70 
 
 1.05 
 
 .86 
 .70 
 .70 
 .70 
 .67 
 
 .70 
 .70 
 .72* 
 .63 
 .63 
 
 1.00 
 1.00 
 .85 
 .90 
 1.20 
 1.10 
 
 0.80 
 
 .80 
 .70 
 .70 
 .67 
 
 .67 
 1.38 
 .67 
 .88 
 .68 
 
 .72 
 .90 
 .90 
 .70 
 .67 
 
 .67 
 .65 
 .63 
 .63 
 .63 
 
 0.75 
 
 12 
 
 .75 
 
 13 '.. 
 
 .73 
 
 14 
 
 .70 
 
 15 
 
 .70 
 
 16 
 
 .70 
 
 17 
 
 .67 
 
 18 
 
 .68 
 
 19 
 
 .95 
 
 20 
 
 .80 
 
 21 
 
 .77 
 
 22 
 
 1.40 
 
 23 
 
 1.15 
 
 24 
 
 1.15 
 
 25 
 
 .90 
 
 26 
 
 1.00 
 
 27 
 
 .88 
 
 28 
 
 .85 
 
 29 
 
 .84 
 
 30 
 
 .82 
 
 31 
 
 .80 
 
 
 
 Daily discharge, in second-feet, of Kauaula ditch near Lahaina, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 2.8 
 2.8 
 2.8 
 2.8 
 2.8 
 
 2.8 
 
 2.8 
 2.8 
 2.8 
 2.8 
 
 2.8 
 
 2.8 
 2.8 
 2.8 
 2.8 
 
 2.8 
 2.8 
 2.8 
 2.8 
 2.8 
 
 2.8 
 2.8 
 2.8 
 2.8 
 2.8 
 
 2.8 
 
 2.8 
 2.8 
 2.8 
 2.8 
 2.8 
 
 Feb. 
 
 2.8 
 2.8 
 2.8 
 2.8 
 2.8 
 
 2.8 
 2.8 
 2.8 
 2.8 
 2.8 
 
 10.1 
 10.1 
 10.3 
 11.0 
 11.0 
 
 12.8 
 12.8 
 9.0 
 8.4 
 8.4 
 
 9.7 
 10.5 
 11.9 
 11.9 
 11.9 
 
 12.8 
 12.8 
 10.8 
 10.1 
 
 Mar. 
 
 11.9 
 11.9 
 11.9 
 11.9 
 11.9 
 
 11.9 
 11.9 
 11.9 
 11.9 
 14.6 
 
 11.9 
 11.9 
 11.9 
 11.9 
 11.0 
 
 9.7 
 9.7 
 10.1 
 11.9 
 11.9 
 
 11.9 
 
 10.5 
 9.2 
 8.7 
 8.4 
 
 8.0 
 
 8.0 
 8.4 
 7.5 
 9.2 
 12.8 
 
 Apr. 
 
 11.9 
 6.8 
 
 13.5 
 
 13.0 
 23.6 
 13.7 
 12.4 
 10.1 
 
 11.9 
 
 12.8 
 12.8 
 12.8 
 
 12.8 
 12.8 
 11.9 
 10.6 
 9.2 
 
 9.2 
 9.2 
 8.7 
 10.6 
 10.1 
 
 10.6 
 9.7 
 9.2 
 9.2 
 9.2 
 
 May. 
 
 11.9 
 8.9 
 8.9 
 
 11.0 
 
 12.8 
 9.7 
 
 12.8 
 8.7 
 8.5 
 
 8.0 
 8.0 
 8.0 
 8.0 
 7.5 
 
 7.5 
 7.5 
 7.5 
 9.2 
 7.5 
 
 9.2 
 7.5 
 7.5 
 7.5 
 
 7.5 
 
 7.5 
 14.6 
 10.1 
 8.0 
 7.5 
 7.5 
 
 June. 
 
 7.5 
 7.5 
 7.5 
 7.5 
 7.5 
 
 7.2 
 7.2 
 9.7 
 8.0 
 7.5 
 
 7.5 
 7.0 
 6.8 
 6.0 
 8.0 
 
 7.0 
 6.8 
 6.0 
 6.0 
 6.0 
 
 6.4 
 6.4 
 14.6 
 7.5 
 6.4 
 
 6.8 
 
 July. 
 
 6.3 
 6.3 
 6.3 
 6.3 
 
 6.0 
 13.7 
 
 7.8 
 
 6.0 
 6.0 
 
 6.0 
 6.0 
 6.0 
 
 6.0 
 6.0 
 6.0 
 6.0 
 6.0 
 
 6.0 
 6.0 
 6.0 
 6.0 
 6.0 
 6.0 
 
 Aug. 
 
 6.0 
 6.0 
 6.0 
 5.7 
 5.6 
 
 6.0 
 5.6 
 9.2 
 9.2 
 
 6.0 
 6.0 
 6.0 
 6.8 
 9.2 
 
 9.2 
 8.9 
 6.0 
 6.0 
 7.5 
 
 6.3 
 
 6.0 
 6.0 
 6.0 
 6.0 
 
 7.5 
 6.0 
 6.0 
 6.0 
 6.0 
 6.0 
 
 5.6 
 6.0 
 6.0 
 6.0 
 6.0 
 
 6.0 
 11.4 
 6.0 
 6.0 
 6.0 
 
 6.0 
 
 6.0 
 6.0 
 5.6 
 5.6 
 
 5.6 
 5.3 
 5.3 
 5.3 
 
 6.4 
 
 5.6 
 5.6 
 
 5.3 
 5.3 
 6.0 
 6.0 
 14.6 
 
 Oct. 
 
 6.2 
 8.4 
 6.0 
 6.0 
 6.0 
 
 6.0 
 6.0 
 6.8 
 6.0 
 6.0 
 
 6.0 
 6.0 
 6.0 
 6.0 
 11.9 
 
 8.5 
 6.0 
 6.0 
 6.0 
 5.6 
 
 6.0 
 
 6.0 
 6.3 
 5.0 
 5.0 
 
 11.0 
 
 11.0 
 8.4 
 9.2 
 14.6 
 12.8 
 
 Nov. 
 
 11.0 
 7.5 
 6.4 
 6.0 
 6.0 
 
 6.0 
 6.0 
 6.0 
 11.0 
 11.0 
 
 7.5 
 7.5 
 6.0 
 6.0 
 5.6 
 
 5.6 
 17.8 
 5.6 
 8.9 
 5.7 
 
 9.2 
 9.2 
 6.0 
 5.6 
 
 5.6 
 5.3 
 5.0 
 5.0 
 5.0 
 
154 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of Kauaula ditch near Lahaina, Maui, for 1912. 
 
 Month. 
 
 Discharge In second-feet. 
 
 Maximum. Minimum. Mean. 
 
 Run-oft 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 23.6 
 
 2.8 
 2.8 
 7.5 
 6.8 
 7.5 
 6.0 
 6.0 
 5.6 
 5.3 
 5.0 
 5.0 
 5.6 
 
 2.8 
 
 2.80 
 8.08 
 10.8 
 10.5 
 8.62 
 7.29 
 6.53 
 6.29 
 6.26 
 7.31 
 7.18 
 8.51 
 
 7.51 
 
 172.0 
 465.0 
 664.0 
 625.0 
 530.0 
 434.0 
 402.0 
 387.0 
 372.0 
 449.0 
 427.0 
 523.0 
 
 5,450.0 
 
 LAHAINALUNA STREAM BASIN. 
 LAHAINALUNA STREAM NEAR LAHAINA, MATJI. 
 
 Location. — About 1J miles northeast of Lahaina, one-fourth mile above Lahainaluna 
 
 Seminary, and 8 feet above Pioneer Mill Co. 'a upper ditch intake. 
 Records available. — August 5, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; datum unchanged 
 Channel. — Shifting. 
 
 Discharge measurements. — Made by wading. 
 Cooperation. — Station maintained in cooperation with Pioneer Mill Co. 
 
 Discharge measurements of Lahainaluna Stream near Lahaina, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 
 J. B. Stewart 
 
 Feet. 
 0.20 
 .16 
 
 Sec-feet. 
 1.42 
 
 Dec. 13 
 
 C. T. Bailey 
 
 1.28 
 
 
 
 
 Daily gage height, in feet, of Lahainaluna Stream near Lahaina, Maui, for 1912. 
 
 [Kawashima, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.25 
 .26 
 
 .22 
 .22 
 .24 
 
 .21 
 .21 
 .25 
 .24 
 .21 
 
 .22 
 .22 
 .21 
 .21 
 .21 
 
 .21 
 .21 
 .20 
 .18 
 .18 
 
 0.17 
 
 .28 
 .26 
 .20 
 .20 
 
 .19 
 .18 
 .18 
 .18 
 .24 
 
 .18 
 .18 
 .18 
 .17 
 .17 
 
 .17 
 .17 
 .17 
 .72 
 1.35 
 
 0.20 
 .36 
 .38 
 .24 
 .22 
 
 .21 
 .32 
 
 .26 
 .42 
 .28 
 
 1.00 
 .36 
 .32 
 .20 
 .20 
 
 .20 
 .70 
 .52 
 .21 
 .29 
 
 0.55 
 .72 
 .53 
 .48 
 
 1.16 
 
 .86 
 1.36 
 .96 
 .64 
 .56 
 
 .35 
 .33 
 .32 
 .60 
 .22 
 
 .21 
 .23 
 .22 
 .20 
 .20 
 
 0.22 
 .34 
 .19 
 .31 
 .41 
 
 .45 
 .20 
 .40 
 .20 
 .20 
 
 .20 
 .19 
 .18 
 .18 
 .18 
 
 .18 
 .18 
 .18 
 .29 
 .20 
 
 0.20 
 .19 
 
 .18 
 
 .18 
 
 • .70 
 
 .16 
 .16 
 ,16 
 .28 
 .19 
 
 = 18 
 .18 
 .18 
 .20 
 .22 
 
 .24 
 .22 
 .18 
 .20 
 .22 
 
 0.25 
 .21 
 .25 
 .38 
 .24 
 
 .16 
 .20 
 .16 
 -58 
 .20 
 
 .20 
 .18 
 .25 
 .19 
 
 .17 
 
 .18 
 
 .18 
 .16 
 .16 
 .15 
 
 0.16 
 .16 
 .16 
 .16 
 .16 
 
 .15 
 .15 
 .19 
 
 .28 
 .42 
 
 ,60 
 .32 
 ,15 
 .15 
 .35 
 
 .24 
 .22 
 .10 
 .10 
 .10 
 
 0.25 
 .80 
 .19 
 .22 
 .12 
 
 .86 
 .49 
 .14 
 .15 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .12 
 .12 
 .14 
 .13 
 
 0.36 
 .30 
 .14 
 .10 
 .10 
 
 .12 
 .12 
 .22 
 .12 
 .13 
 
 .13 
 .12 
 .15 
 .26 
 .12 
 
 .13 
 .12 
 .12 
 .12 
 
 .12 
 
 0.24 
 .12 
 .12 
 .11 
 .13 
 
 .13 
 .12 
 
 .21 
 
 2.00 
 
 .38 
 
 .45 
 .26 
 .20 
 .15 
 .15 
 
 .32 
 .48 
 .52 
 .40 
 .88 
 
 0.28 
 
 2 
 
 .24 
 
 3 
 
 .30 
 
 4 
 
 .20 
 
 5 
 
 .20 
 
 6 
 
 .13 
 
 7 
 
 .32 
 
 8 
 
 .15 
 
 9 
 
 .15 
 
 10 
 
 .15 
 
 11 
 
 .15 
 
 12 
 
 .14 
 
 13 
 
 .14 
 
 14 
 
 .14 
 
 15 
 
 .18 
 
 16 
 
 .18 
 
 17 
 
 .18 
 
 18 
 
 .15 
 
 19 
 
 .28 
 
 20 
 
 .24 
 
ISLAND OF MAUI. 
 
 155 
 
 Daily gage height, in feet, of Lahainaluna Stream near Lahaina, Maui, for 1912 — Contd. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 0.18 
 .18 
 .18 
 .18 
 .18 
 
 .18 
 .18 
 .18 
 .17 
 .17 
 .17 
 
 1.95 
 
 1.45 
 
 .60 
 
 .38 
 
 .36 
 
 .35 
 1.80 
 .54 
 
 .22 
 
 0.20 
 .20 
 .18 
 .18 
 .17 
 
 .17 
 .15 
 .15 
 .19 
 
 .45 
 .54 
 
 0.20 
 .32 
 .21 
 .30 
 .64 
 
 .38 
 .24 
 .22 
 .20 
 
 .22 
 
 0.52 
 .30 
 .22 
 .29 
 .20 
 
 .36 
 .92 
 .41 
 .21 
 
 .20 
 .20 
 
 0.60 
 
 .20 
 .21 
 .45 
 .20 
 
 .20 
 .18 
 .18 
 .18 
 
 .18 
 
 0.18 
 .18 
 .18 
 .36 
 .19 
 
 .15 
 .24 
 .16 
 .16 
 .18 
 .15 
 
 0.10 
 .24 
 .15 
 .10 
 .10 
 
 .14 
 .10 
 .16 
 
 .22 
 .28 
 .25 
 
 0.13 
 .13 
 .13 
 .13 
 .14 
 
 .14 
 .14 
 .14 
 
 .22 
 .56 
 
 0.32 
 
 .30 
 .40 
 .16 
 .11 
 
 .60 
 .55 
 .28 
 .18 
 .33 
 1.65 
 
 0.40 
 .28 
 .30 
 .14 
 .15 
 
 .12 
 .12 
 .19 
 .19 
 .19 
 
 0.86 
 
 22 
 
 1.45 
 
 23 
 
 1.12 
 
 24 
 
 .34 
 
 25 
 
 26 
 
 .27 
 .80 
 
 27 
 
 .28 
 
 28 
 
 .24 
 
 29 
 
 .27 
 
 30 
 
 .32 
 
 31 
 
 .26 
 
 
 
 KAHOMA STREAM BASIN". 
 KAHOMA STREAM NEAR LAHAINA, MATTI. 
 
 Location. — About 3J miles above Lahaina, 500 feet below email dam that diverts 
 all low-water flow, and 125 feet above concrete dam for Pioneer Mill Co.'s upper 
 ditch. 
 
 Records available. — August 3, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 7 a. m. and 3 p. m.; datum unchanged. 
 
 Channel. — Liable to shift. 
 
 Discharge measurements. — Made by wading. 
 
 Accuracy. — No discharge rating has been obtained. 
 
 Cooperation. — Station maintained in cooperation with Pioneer Mill Co. 
 The following discharge measurement was made by C. T. Bailey: 
 December 13, 1912: Gage height, 0.40 foot; discharge, 0.16 second-foot. 
 
 Daily gage height, in feet, of Kahoma Stream near Lahaina, Maui, for 1912. 
 [E. C. Bortfeld, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 
 
 
 
 
 2 
 
 
 
 
 
 
 
 
 
 
 
 
 
 3 
 
 
 
 0.75 
 
 0.80 
 
 .80 
 
 1.00 
 
 .80 
 1.20 
 1.55 
 
 .90 
 1.00 
 
 0.70 
 .75 
 
 
 
 
 
 
 
 
 4 
 
 
 
 
 
 
 
 
 
 
 5 
 
 
 
 
 
 
 
 
 
 
 
 6 
 
 
 
 
 
 
 
 
 0.75 
 
 
 
 
 7 
 
 
 
 
 .75 
 
 
 
 
 0.65 
 
 
 
 8 
 
 
 
 
 
 
 
 
 3.25 
 
 
 9 
 
 
 
 
 
 
 0.90 
 
 
 
 
 
 10 
 
 
 
 .95 
 .70 
 
 
 
 
 
 
 .70 
 
 
 11 
 
 
 
 
 
 
 
 
 
 
 12 
 
 
 
 .80 
 
 
 
 
 
 
 
 
 
 13 
 
 
 
 
 
 
 
 
 
 
 
 
 14 
 
 
 
 
 .95 
 
 
 
 
 0.65 
 
 
 
 
 
 15 
 
 
 
 .70 
 
 
 
 
 
 
 
 
 16 
 
 
 
 
 
 
 
 
 
 
 1.25 
 
 .70 
 
 1.00 
 
 
 17 
 
 
 
 
 
 
 
 
 
 
 
 
 18 
 
 
 
 
 
 
 
 
 
 
 
 
 19 
 
 
 0.85 
 1.10 
 
 1.95 
 1.15 
 
 .75 
 
 
 
 
 
 
 
 
 "6.70 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 21 
 
 
 
 
 
 
 
 
 
 .80 
 1.05 
 
 2.10 
 
 1.45 
 
 22 
 
 
 
 
 
 
 
 
 
 1.45 
 
 23 
 
 
 
 
 
 
 
 
 
 1.35 
 
 24 
 
 
 
 
 
 
 0.85 
 
 
 
 
 
 
 
 26.... 
 
 
 .90 
 
 
 i.66 
 
 
 
 
 
 
 
 
 26 
 
 
 1.15 
 
 .85 
 
 
 
 .65 
 
 
 
 
 .75 
 
 27 
 
 
 1.10 
 .80 
 
 
 
 
 
 
 
 
 
 28 
 
 
 
 
 
 
 
 
 .70 
 
 
 
 29 
 
 
 
 
 
 
 
 
 
 
 
 30 
 
 
 
 1.05 
 3.00 
 
 
 
 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 1.75 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Note.— On days for which gage heights are not given there was no discharge at station, all low-water 
 flow being diverted at dam 500 feet above. 
 
156 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 KAHOMA DITCH AT WEIR NEAR LAHAINA, MAUI. 
 
 Location. — About 3 J miles above Lahaina at portal of the lower of two development 
 
 tunnels of Pioneer Mill Co. 
 Records available. — August 1, 1911, to December 31, 1912. 
 Gage. — Staff; read twice daily, at 7 a. m. and 3 p.m.; datum unchanged. 
 Discharge measurements. — By 4-foot sharp-crested weir with end contractions, 
 
 measuring discharge from development tunnel and amount diverted by small 
 
 pipe from stream. 
 Cooperation. — Records kept by Pioneer Mill Co. 
 
 Discharge measurements of Kahoma ditch at weir near Lahaina, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 1 
 Dec. 13 
 
 J. B. Stewart. 
 C.T.Bailey.. 
 
 Inches. 
 5.1 
 4.4 
 
 Sec-feet. 
 3.58 
 2.98 
 
 Daily discharge, in second-feet, of Kahoma ditch at weir near Lahaina, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 4.71 
 5. 58 
 4.99 
 4.43 
 4.43 
 
 4.43 
 4.43 
 4.99 
 5.29 
 4.43 
 
 4.43 
 4.29 
 4.29 
 4.16 
 4.16 
 
 4.16 
 4.16 
 1.16 
 4.16 
 4.16 
 
 4.16 
 4.16 
 4.16 
 4.16 
 4.16 
 
 4.02 
 4.02 
 4.02 
 3.89 
 4.02 
 4.02 
 
 3.89 
 
 5.58 
 6.66 
 4.99 
 4.16 
 
 3.89 
 3.89 
 3.89 
 3.89 
 3.89 
 
 5.58 
 4.02 
 3.89 
 3.89 
 3.76 
 
 3.76 
 3.76 
 3.76 
 7.30 
 8.14 
 
 8.65 
 8.14 
 5.58 
 7.14 
 
 7.47 
 
 7.47 
 8.14 
 7.80 
 5.14 
 
 6.66 
 7.14 
 7.14 
 5.58 
 4.71 
 
 6.19 
 
 6.98 
 5.14 
 6.50 
 
 7.47 
 
 7.64 
 6.82 
 4.71 
 4.16 
 7.47 
 
 4.02 
 3.89 
 6.04 
 7.64 
 4.71 
 
 4.57 
 6.04 
 4.16 
 4.02 
 3.76 
 
 4.43 
 
 3.89 
 3.89 
 4.71 
 7.97 
 7.14 
 
 6.19 
 6.19 
 
 6.98 
 6.98 
 7.80 
 
 7.14 
 8.65 
 8.65 
 7.97 
 7.80 
 
 5.58 
 7.14 
 4.99 
 7.47 
 5.14 
 
 6.19 
 
 6.50 
 5.29 
 5.73 
 6.19 
 
 4.85 
 6.50 
 6.50 
 5.58 
 7.97 
 
 6.82 
 5.29 
 4.16 
 3.89 
 3.89 
 
 6.19 
 
 3.89 
 7.30 
 7.14 
 6.50 
 
 4.16 
 7.80 
 4.29 
 3.89 
 3.76 
 
 3.76 
 3.63 
 3.63 
 3.63 
 3.63 
 
 3.63 
 3.63 
 6.19 
 5.43 
 6.66 
 
 4.16 
 3.76 
 4.43 
 3.89 
 5.73 
 
 7.80 
 7.14 
 5.14 
 3.89 
 4.16 
 3.76 
 
 3.76 
 3.78 
 3.63 
 3.63 
 3.50 
 
 3.50 
 3.50 
 3.63 
 3.89 
 4.57 
 
 3.89 
 3.76 
 5.73 
 4.43 
 5.14 
 
 5.14 
 4.43 
 4.16 
 4.85 
 4.02 
 
 5.58 
 4.16 
 5.88 
 7.47 
 4.71 
 
 4.43 
 4.02 
 3.89 
 3.89 
 3.89 
 
 4.85 
 6.50 
 6.50 
 5.14 
 5.14 
 
 4.57 
 4.43 
 4.02 
 7.47 
 4.71 
 
 4.43 
 4.16 
 5.88 
 4.43 
 4.29 
 
 4.16 
 4.16 
 4.16 
 4.02 
 4.02 
 
 4.16 
 4.16 
 4.16 
 7.30 
 4.29 
 
 4.16 
 4.16 
 4.43 
 4.29 
 4.16 
 4.16 
 
 4.02 
 4.02 
 4.02 
 3.89 
 3.89 
 
 3.89 
 4.43 
 4.71 
 6.19 
 4.71 
 
 6.50 
 4.85 
 4.29 
 6.19 
 6.66 
 
 6.04 
 4.16 
 4.02 
 3.89 
 3.89 
 
 3.89 
 4.16 
 4.16 
 3.89 
 3.89 
 
 6.19 
 4.99 
 4.02 
 6.50 
 5.58 
 5.58 
 
 4.85 
 7.14 
 4.99 
 4.16 
 
 4.71 
 
 6.82. 
 6.50 
 4.16 
 4.71 
 3.89 
 
 3.89 
 3.76 
 3.76 
 3.76 
 3.63 
 
 3.63 
 3.63 
 3.50 
 3.50 
 3.50 
 
 3.63 
 
 3.63 
 3.50 
 3.50 
 3.50 
 
 3.50 
 3.50 
 3.37 
 4.71 
 4.71 
 
 6.19 
 
 4.02 
 4.02 
 3.63 
 5.14 
 
 3.89 
 5.88 
 4.43 
 3.63 
 3.89 
 
 3.37 
 
 4.71 
 3.63 
 6.19 
 3.63 
 
 3.50 
 3.37 
 3.24 
 3.24 
 3.24 
 
 6.50 
 7.47 
 6.19 
 4.43 
 3.63 
 
 6.50 
 6.50 
 6.82 
 3.89 
 5.88 
 8.14 
 
 4.71 
 3.89 
 3.63 
 3.37 
 3.37 
 
 3.37 
 3.37 
 3.37 
 
 8.65 
 5.88 
 
 6.82 
 3.76 
 3.37 
 3.37 
 3.37 
 
 7.47 
 6.35 
 7.47 
 5.88 
 4.43 
 
 7.80 
 4.99 
 5.29 
 3.89 
 3.37 
 
 3.24 
 3.12 
 3.12 
 3.12 
 3.12 
 
 6.35 
 
 2 
 
 3.89 
 
 3 
 
 5.88 
 
 4 
 
 3.63 
 
 5 
 
 3.12 
 
 6 
 
 3.12 
 
 7 
 
 5.58 
 
 8 
 
 4.43 
 
 9 
 
 3.24 
 
 10 
 
 3.12 
 
 11 
 
 3.00 
 
 12 
 
 3.00 
 
 13 
 
 3.00 
 
 14 
 
 3.00 
 
 15 
 
 3.50 
 
 16... 
 
 3.00 
 
 17 
 
 2.88 
 
 18 
 
 5.14 
 
 19 
 
 6.66 
 
 20 
 
 5.14 
 
 21 
 
 7.14 
 
 22 
 
 7.80 
 
 23 
 
 7.64 
 
 24 
 
 5.58 
 
 25 
 
 5.29 
 
 26 
 
 6.19 
 
 27 
 
 4.43 
 
 28 
 
 4.99 
 
 29 
 
 3.63 
 
 30 
 
 5.88 
 
 31 
 
 4.16 
 
 
 
 Note.— Daily discharge computed from formula Q-=3.33 LHa, L=4 feet; H=mean of two daily readings. 
 
ISLAND OF MAUI. 157 
 
 Monthly discharge of Kdhoma ditch at weir near Lahaina, Maui, for 1912. 
 
 Month. 
 
 January 
 
 February 
 
 March 
 
 April.. 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Discharge in second-feet. 
 
 Maximum. Minimum 
 
 5.58 
 8. 65 
 7.97 
 8.65 
 7.80 
 7.47 
 7.47 
 6.66 
 7.14 
 8.14 
 8.65 
 7.80 
 
 65 
 
 3.89 
 3.76 
 3.76 
 3.89 
 3.63 
 3.50 
 4.02 
 3.89 
 3.37 
 3.24 
 3.12 
 2.88 
 
 2.88 
 
 4.34 
 5.45 
 5.65 
 6.33 
 4.92 
 4.36 
 4.72 
 4.75 
 4.20 
 4.80 
 4.57 
 4.63 
 
 .89 
 
 Run-off 
 (total in 
 acre-feet). 
 
 267 
 313 
 347 
 377 
 303 
 259 
 290 
 292 
 250 
 295 
 272 
 285 
 
 3,550 
 
 HONOKAWAI STREAM BASIN. 
 HONOKAWAI DITCH NEAR LAHAINA, MAUI. 
 
 Location. — About 7 miles northeast of Lahaina, 2 miles above Pioneer Mill Co.'s 
 power house, 1,000 feet below intake, and 250 feet below junction with Amalu 
 wooden flume. 
 
 Records available. — July 1 to December 31, 1912. 
 
 Gage. — A graduated rod-gage, placed in the center of flume each time a reading is 
 desired; read twice daily, at 7.30 a. m. and 3 p. m. 
 
 Channel. — Galvanized-iron semicircular flume. 
 
 Discharge measurements. — Made in flume near gage. 
 
 Accuracy. — No discharge rating yet available. 
 
 Cooperation. — Station is maintained in cooperation with Pioneer Mill Co. 
 
 Discharge measurements of HonoJcawai ditch near Lahaina, Maui, in 1912, 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Tune 28 
 
 J. B. Stewart 
 
 Feet. 
 
 0.98 
 
 .98 
 
 .95 
 
 .91 
 
 Sec-feet. 
 5.37 
 
 Sept. 12 
 Nov. 26 
 
 do 
 
 6.03 
 
 do 
 
 4.98 
 
 Dec. 17 
 
 C. T. Bailey 
 
 5.21 
 
 
 
 
 Daily gage height, in feet, of Honohawai ditch near Lahaina, Maui, for 1912. 
 
 Day. July. Aug. Sept. Oct. Nov. Dec. Day. July. Aug. Sept. Oct. Nov. Dec 
 
 1. 
 
 2. 
 3. 
 4. 
 5. 
 
 6. 
 
 7. 
 8. 
 9. 
 10. 
 
 11. 
 12. 
 13. 
 14. 
 15. 
 
 1.01 
 1.00 
 1.00 
 1.00 
 1.00 
 
 1.00 
 1.06 
 1.06 
 1.32 
 1.42 
 
 1.08 
 1.10 
 1.08 
 1.12 
 1.50 
 
 1.00 
 1.50 
 1.04 
 1.06 
 1.02 
 
 1.02 
 1.38 
 1.01 
 1.05 
 1.00 
 
 1.00 
 
 1.32 
 1.02 
 1.01 
 1.00 
 1.04 
 
 1.02 
 .98 
 1.02 
 1.00 
 1.00 
 
 1.14 
 1.06 
 1.04 
 1.30 
 1.16 
 
 1.03 
 1.00 
 
 .97 
 
 .99 
 1.65 
 1.14 
 
 .97 
 
 1.14 
 1.28 
 1.56 
 1.01 
 .96 
 
 .96 
 1.24 
 1.33 
 1.00 
 
 .97 
 
 1.04 
 1.04 
 
 1.06 
 1.00 
 1.00 
 1.00 
 1.30 
 
 1.10 
 
 1.03 
 1.28 
 1.02 
 1.00 
 
 1.00 
 1.02 
 1.04 
 1.01 
 1.01 
 1.02 
 
 1.35 
 
 1.08 
 1.01 
 1.00 
 1.00 
 
 1.00 
 1.12 
 1.02 
 1.00 
 1.00 
 
 1.32 
 1.15 
 1.01 
 1.18 
 1.10 
 1.04 
 
 .98 
 
 .99 
 
 1.04 
 1.02 
 
 1.01 
 1.15 
 1.21 
 
 .99 
 .99 
 
 .97 
 1.12 
 
 1.38 
 1.40 
 1.46 
 1.00 
 1.27 
 1.62 
 
 1.62 
 1.63 
 1.66 
 1.24 
 1.13 
 
 1.35 
 1.12 
 1.15 
 1.02 
 
 .95 
 
 1.00 
 
 .98 
 
 .96 
 
 1.48 
 
 1.10 
 
 1.47 
 1.64 
 1.39 
 1.13 
 1.00 
 
158 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 HONOLUA STREAM BASIN. 
 HONOLTTA DITCH NEAR HONOKAHATT, MAUI. 
 
 Location. — About 5^ miles southwest of Honokahau, about 3 miles above Honolua 
 
 ranch, and 150 feet below ditch intake. 
 Records available. — August 7, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m.; datum unchanged. 
 Channel. — Permanent . 
 
 Discharge measurements. — Made in flume. 
 Accuracy. — No discharge rating yet available. 
 Cooperation. — Honolua Ranch Co. furnishes gage reader and otherwise assists in 
 
 obtaining records. 
 
 Discharge measurements of Honolua ditch near Honokahau, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 June 22 
 
 J. B. Stewart 
 
 Feet. 
 0.52 
 .27 
 .56 
 
 Sec-feet. 
 2.15 
 
 Sept. 13 
 Dec. 16 
 
 do 
 
 .25 
 
 C. T. Bailey 
 
 2.71 
 
 
 
 
 Daily gage height, in feet, of Honolua ditch near Honokahau, Maui, for 1912. 
 
 Day. 
 
 2 
 3 
 
 4. 
 5 
 
 6, 
 
 7. 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14. 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 0.50 
 
 0.29 
 
 0.75 
 
 0.63 
 
 0.33 
 
 0.30 
 
 0.53 
 
 0.45 
 
 .49 
 
 .34 
 
 .90 
 
 .85 
 
 .34 
 
 .65 
 
 .58 
 
 .45 
 
 .47 
 
 .72 
 
 .90 
 
 .83 
 
 .35 
 
 .50 
 
 .42 
 
 .38 
 
 .43 
 
 .48 
 
 .69 
 
 .74 
 
 .35 
 
 .44 
 
 .30 
 
 .35 
 
 .40 
 
 .38 
 
 .58 
 
 .77 
 
 .35 
 
 .42 
 
 .50 
 
 .34 
 
 .40 
 
 .32 
 
 .70 
 
 .66 
 
 .30 
 
 .42 
 
 .27 
 
 .31 
 
 .40 
 
 .30 
 
 .74 
 
 .56 
 
 .30 
 
 .53 
 
 .30 
 
 .29 
 
 .55 
 
 .31 
 
 .52 
 
 .62 
 
 .30 
 
 .40 
 
 .32 
 
 .30 
 
 .51 
 
 .30 
 
 .90 
 
 .80 
 
 .35 
 
 .40 
 
 .32 
 
 1.00 
 
 .46 
 
 .30 
 
 .88 
 
 .80 
 
 .45 
 
 .36 
 
 .32 
 
 .60 
 
 .41 
 
 .67 
 
 .90 
 
 .70 
 
 .46 
 
 .35 
 
 .37 
 
 .48 
 
 .38 
 
 .44 
 
 .90 
 
 .75 
 
 .50 
 
 .28 
 
 .54 
 
 .39 
 
 .36 
 
 .55 
 
 .90 
 
 .85 
 
 .50 
 
 .26 
 
 .77 
 
 .38 
 
 .36 
 
 .80 
 
 .88 
 
 .74 
 
 .78 
 
 .25 
 
 .86 
 
 .36 
 
 .35 
 
 .52 
 
 .74 
 
 .64 
 
 .82 
 
 .24 
 
 .74 
 
 .32 
 
 .35 
 
 .40 
 
 .64 
 
 .53 
 
 .80 
 
 .23 
 
 .45 
 
 1.00 
 
 .34 
 
 .36 
 
 .76 
 
 .64 
 
 .48 
 
 .20 
 
 .33 
 
 .90 
 
 .34 
 
 .34 
 
 .90 
 
 .45 
 
 .48 
 
 .20 
 
 .34 
 
 .85 
 
 .34 
 
 .85 
 
 .88 
 
 .42 
 
 .35 
 
 .22 
 
 .31 
 
 .78 
 
 .33 
 
 .90 
 
 .90 
 
 .32 
 
 .32 
 
 .26 
 
 .30 
 
 .68 
 
 .33 
 
 .85 
 
 .88 
 
 .48 
 
 .54 
 
 .23 
 
 .55 
 
 .76 
 
 .32 
 
 .80 
 
 .74 
 
 .48 
 
 .42 
 
 .20 
 
 .72 
 
 .76 
 
 .32 
 
 .89 
 
 .60 
 
 .36 
 
 .35 
 
 .18 
 
 .80 
 
 .68 
 
 .47 
 
 .83 
 
 .58 
 
 .42 
 
 .35 
 
 .15 
 
 .44 
 
 .49 
 
 .36 
 
 .90 
 
 .58 
 
 .40 
 
 .35 
 
 .70 
 
 .40 
 
 .44 
 
 .33 
 
 .58 
 
 .82 
 
 .40 
 
 .50 
 
 .50 
 
 .58 
 
 .40 
 
 .33 
 
 .90 
 
 .68 
 
 .35 
 
 .60 
 
 1.45 
 
 .80 
 
 .40 
 
 .32 
 
 .90 
 
 .64 
 
 .35 
 
 .40 
 
 .20 
 
 .92 
 
 .40 
 
 .32 
 
 .68 
 
 .62 
 
 .46 
 
 .40 
 
 .40 
 
 .48 
 
 .40 
 
 .30 
 
 
 .76 
 
 .45 
 
 .42 
 
 .76 
 
 .51 
 
 .48 
 
 .30 
 
 
 .89 
 
 .38 
 
 .32 
 
 
 .76 
 
 
 Dec. 
 
 0.74 
 
 .58 
 .99 
 .58 
 .50 
 
 .48 
 .76 
 .58 
 .50 
 .46 
 
 .41 
 .40 
 .40 
 .39 
 .40 
 
 .56 
 .36 
 .38 
 .72 
 
 .47 
 
 .72 
 
 .87 
 .67 
 .55 
 .47 
 
 .58 
 .47 
 .46 
 .52 
 .60 
 .50 
 
 Note. — Gage not read during April, May, and June. 
 
ISLAND OF MAUI. 
 
 159 
 
 HONOKAHAU STREAM BASIN. 
 HONOKAHATT DITCH AT INTAKE, NEAR HONOKAHAU, MATTI. 
 
 Location. — About 9 miles by trail from Honokahau and 250 feet below ditch intake. 
 
 Records available. — February 3, 1907, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m. 
 
 Channel. — Probably permanent. 
 
 Discharge measurements. — Made from plank at gage. 
 
 Accuracy. — Records good. 
 
 Cooperation. — Gage is the property of the Honolua Ranch Co. 
 
 Discharge measurements of Honokahau ditch at intake, near Honokahau, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 29 
 Mar. 1 
 Sept. 13 
 
 J. B. Stewart 
 
 do 
 
 do 
 
 Inches. 
 27.8 
 17.0 
 22.2 
 
 Sec.-ft. 
 30.6 
 12.6 
 19.0 
 
 Nov. 27 
 Dec. 16 
 
 J.B.Stewart 
 
 C. T. Bailey 
 
 Inches. 
 22.0 
 23.9 
 
 Sec.-ft. 
 19.2 
 22.5 
 
 Daily gage height, in inches, of Honokahau ditch at intake, near Honokahau, Maui, for 
 
 1912. 
 
 [Takahashi, observer.] 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 1. 
 2. 
 3. 
 4. 
 5. 
 
 6. 
 7. 
 8. 
 9. 
 10. 
 
 11. 
 12. 
 13. 
 14. 
 15. 
 
 16 
 17. 
 18. 
 19. 
 20. 
 
 21. 
 22. 
 23. 
 24. 
 
 25. 
 
 26 
 27 
 28. 
 29 
 30 
 31 
 
 28.2 
 30.4 
 27.8 
 27.0 
 26.5 
 
 26.2 
 28.6 
 32.8 
 30.8 
 27.4 
 
 26.1 
 26.0 
 25.8 
 25.5 
 25.5 
 
 25.5 
 25.5 
 25.2 
 25.2 
 25.2 
 
 24.9 
 
 24.8 
 24.8 
 26.1 
 24.9 
 
 24.8 
 24.5 
 24.5 
 24.1 
 23.9 
 
 23.8 
 26.9 
 33.0 
 26.2 
 24.5 
 
 24.0 
 23.9 
 24.9 
 25.4 
 24.1 
 
 30.0 
 24.9 
 27.5 
 30.1 
 24.2 
 
 24.0 
 24.1 
 23.8 
 33.5 
 34.0 
 
 34.0 
 29.8 
 34.0 
 34.0 
 34.0 
 
 34.0 
 34.0 
 34.0 
 
 28.4 
 
 30.8 
 34.0 
 34.0 
 30.8 
 31.0 
 
 32.5 
 32.0 
 28.0 
 34.0 
 33.5 
 
 34.0 
 34.0 
 34.0 
 31.9 
 
 28.5 
 
 27.4 
 30.8 
 34.0 
 32.0 
 34.0 
 
 32.1 
 
 28.6 
 27.8 
 27.2 
 27.9 
 
 31.5 
 29.5 
 29.6 
 30.8 
 34.0 
 33.5 
 
 32.5 
 31.5 
 34.0 
 34.0 
 34.0 
 
 34.0 
 34.0 
 34.0 
 34.0 
 34.0 
 
 31.5 
 34.0 
 32.5 
 34.0 
 33.0 
 
 34.0 
 34.0 
 34.0 
 34.0 
 34.0 
 
 33.5 
 34.0 
 32.8 
 32.5 
 31.6 
 
 33.0 
 31.8 
 30.5 
 29.6 
 32.5 
 
 30.6 
 34.0 
 34.0 
 32.0 
 33.5 
 
 32.4 
 29.6 
 32.6 
 29.5 
 29.0 
 
 28.6 
 28.5 
 28.4 
 28.1 
 27.9 
 
 27.8 
 27.6 
 27.6 
 31.8 
 30.0 
 
 31.0 
 
 28.4 
 27.8 
 30.8 
 29.6 
 
 34.0 
 34.0 
 34.0 
 32.5 
 31.0 
 29.4 
 
 27.5 
 27.0 
 26.6 
 26.5 
 26.2 
 
 26.1 
 27.2 
 33.0 
 28.5 
 31.9 
 
 33.0 
 31.5 
 32.5 
 31.9 
 34.0 
 
 30.6 
 31.5 
 28.0 
 27.5 
 27.0 
 
 31.0 
 28.5 
 31.4 
 34.0 
 27.9 
 
 27.2 
 26.5 
 26.0 
 25.9 
 25.5 
 
 27.5 
 27.9 
 28.0 
 30.4 
 31.0 
 
 28.0 
 32.0 
 30.2 
 34.0 
 33.0 
 
 33.0 
 31.5 
 34.0 
 32.0 
 27.4 
 
 30.1 
 
 28.2 
 26.2 
 26.2 
 25.9 
 
 31.8 
 
 28.4 
 26.8 
 30.5 
 25.8 
 
 25.2 
 27.0 
 27.0 
 
 26.2 
 25.8 
 24.9 
 
 24.5 
 24.5 
 24.4 
 24.2 
 24.1 
 
 24.0 
 26.0 
 25.5 
 30.8 
 28.2 
 
 31.0 
 
 26.4 
 27.8 
 34.0 
 29.4 
 
 31.8 
 
 27.4 
 24.9 
 24.4 
 24.2 
 
 24.0 
 27.0 
 24.2 
 23.6 
 23.4 
 
 28.6 
 27.5 
 24.2 
 29.5 
 26.5 
 25.4 
 
 23.5 
 33.0 
 25.2 
 23.8 
 25.0 
 
 23.5 
 30.0 
 23.4 
 24.2 
 22.9 
 
 21.5 
 21.5 
 21.5 
 24.4 
 22.5 
 
 23.8 
 22.4 
 21.9 
 21.6 
 21.4 
 
 23.2 
 25.1 
 26.5 
 27.2 
 30.5 
 
 29.4 
 29.0 
 23.0 
 29.5 
 25.2 
 
 23.0 
 
 22.8 
 28.8 
 24.0 
 22.6 
 
 28.2 
 27.5 
 30.2 
 31.0 
 30.0 
 
 23.5 
 22.4 
 21.9 
 21.6 
 21.5 
 
 30.5 
 31.2 
 28.8 
 24.5 
 22.5 
 
 30.2 
 30.8 
 30.4 
 23.4 
 29.0 
 33.0 
 
 34.0 
 23.8 
 22.2 
 23.2 
 21.8 
 
 21.9 
 21.5 
 21.8 
 23.0 
 34.0 
 
 28.0 
 24.5 
 22.2 
 21.5 
 21.1 
 
 21.0 
 31.5 
 34.0 
 29.8 
 28.1 
 
 32.0 
 29.5 
 30.5 
 23.2 
 22.2 
 
 22.0 
 21.9 
 21.8 
 22.0 
 
 28.2 
 
 33.5 
 30.0 
 32.2 
 24.6 
 22.4 
 
 22.0 
 34.0 
 28.0 
 24.8 
 27.9 
 
 22.2 
 22.0 
 21.9 
 24.0 
 23.2 
 
 24.2 
 21.9 
 28.8 
 33.0 
 25.2 
 
 29.0 
 34.0 
 30.4 
 26.2 
 29.2 
 
 29.8 
 23.8 
 28.0 
 23.8 
 29.2 
 28.8 
 
160 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet , of Honokahau ditch at intake, near Honokahau, Maui, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 31.4 
 35.8 
 30.6 
 29.0 
 28.0 
 
 27.4 
 32.2 
 40.6 
 36.6 
 29.8 
 
 27.2 
 27.0 
 26.6 
 26.0 
 26.0 
 
 26.0 
 26.0 
 25.4 
 25.4 
 25.4 
 
 24.8 
 24.6 
 24.6 
 27.2 
 24.8 
 
 24.8 
 24.0 
 24.0 
 23.2 
 
 22.8 
 22.8 
 
 22.6 
 28.8 
 41.0 
 27.4 
 24.0 
 
 23.0 
 
 22.8 
 24.8 
 25.8 
 23.2 
 
 35.0 
 24.8 
 30.0 
 35.2 
 24.8 
 
 23.0 
 23.2 
 22.6 
 42.0 
 43.0 
 
 43.0 
 34.6 
 43.0 
 43.0 
 43.0 
 
 43.0 
 43.0 
 43.0 
 31.8 
 
 35.0 
 43.0 
 43.0 
 36.6 
 37,0 
 
 40.0 
 39.0 
 31.0 
 43.0 
 42.0 
 
 43.0 
 43.0 
 43.0 
 38.8 
 32.0 
 
 29.8 
 36.6 
 43.0 
 39.0 
 43.0 
 
 39.2 
 32.2 
 30.6 
 29.4 
 30.8 
 
 34.8 
 34.2 
 
 43.0 
 42.0 
 
 40.0 
 38.0 
 43.0 
 43.0 
 43.0 
 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 
 38.0 
 43.0 
 40.0 
 43.0 
 41.0 
 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 
 42.0 
 43.0 
 40.6 
 40.0 
 38.2 
 
 41.0 
 38.6 
 36.0 
 34.2 
 40.0 
 
 36.2 
 43.0 
 43.0 
 39.0 
 42.0 
 
 39.8 
 34.2 
 40.2 
 34.0 
 33.0 
 
 32.2 
 32.0 
 31.8 
 31.2 
 
 30.6 
 30.2 
 30.2 
 38.6 
 35.0 
 
 37.0 
 
 31.8 
 30.6 
 36.6 
 34.2 
 
 43.0 
 
 43.0 
 43.0 
 40.0 
 37.0 
 33.8 
 
 30.0 
 29.0 
 28.2 
 28.0 
 27.4 
 
 27.2 
 29.4 
 41.0 
 32.0 
 
 41.0 
 38.0 
 40.0 
 38.8 
 43.0 
 
 36.2 
 38.0 
 31.0 
 30.0 
 29.0 
 
 37.0 
 32.0 
 37.8 
 43.0 
 30.8 
 
 29.4 
 28.0 
 27.0 
 26.8 
 26.0 
 
 30.0 
 30.8 
 31.0 
 35.8 
 37.0 
 
 31.0 
 
 39.0 
 35.4 
 43.0 
 41.0 
 
 41.0 
 38.0 
 43.0 
 39.0 
 29.8 
 
 35.2 
 31.4 
 27.4 
 27.4 
 26.8 
 
 31.8 
 28.6 
 36.0 
 26.6 
 
 25.4 
 29.0 
 29.0 
 
 27.4 
 26.6 
 24.8 
 
 24.0 
 24.0 
 23.8 
 23.4 
 23.2 
 
 23.0 
 
 27.0 
 26.0 
 36.6 
 31.4 
 
 37.0 
 
 27.8 
 30.6 
 43.0 
 33.8 
 
 29.8 
 24.8 
 23.8 
 23.4 
 
 23.0 
 29.0 
 23.4 
 22.2 
 21.8 
 
 32.2 
 30.0 
 23.4 
 34.0 
 28.0 
 25.8 
 
 22.0 
 41.0 
 25.4 
 22.6 
 25.0 
 
 22.0 
 35.0 
 21.8 
 23.4 
 20.8 
 
 20.0 
 19.8 
 19.0 
 19.0 
 18.4 
 
 18.2 
 18.2 
 18.2 
 23.8 
 20.0 
 
 22.6 
 19.8 
 18.8 
 18.4 
 18.1 
 
 21.4 
 25.2 
 28.0 
 29.4 
 36.0 
 
 33.8 
 33.0 
 21.0 
 34.0 
 25.4 
 
 21.0 
 20.6 
 32.6 
 23.0 
 20.2 
 
 31.4 
 30.0 
 35.4 
 37.0 
 35.0 
 
 22.0 
 19.8 
 18.8 
 18.4 
 18.3 
 
 36.0 
 37.4 
 32.6 
 24.0 
 20.0 
 
 35.4 
 36.6 
 35.6 
 21.8 
 33.0 
 41.0 
 
 43.0 
 22.6 
 19.4 
 21.4 
 18.7 
 
 18.8 
 18.2 
 18.7 
 21.0 
 43.0 
 
 31.0 
 24.0 
 19.4 
 18.2 
 17.6 
 
 17.5 
 38.0 
 43.0 
 34.6 
 31.2 
 
 39.0 
 34.0 
 36.0 
 21.4 
 19.4 
 
 19.0 
 
 18.8 
 18.7 
 19.0 
 31.4 
 
 42.0 
 35.0 
 39.4 
 24.2 
 19.8 
 
 19.0 
 43.0 
 31.0 
 24.6 
 30.8 
 
 19.4 
 19.0 
 18.8 
 23.0 
 21.4 
 
 23.4 
 18.8 
 32.6 
 41.0 
 25.4 
 
 33.0 
 43.0 
 35.8 
 27.4 
 33.4 
 
 34.6 
 
 22.6 
 31.0 
 22.6 
 33.4 
 32.6 
 
 Monthly discharge of Honokahau ditch at intake, near Honokahau, Maui, for 1912. 
 
 Month. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 40.6 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 43.0 
 41.0 
 41.0 
 43.0 
 43.0 
 
 43.0 
 
 22.8 
 22.6 
 29.4 
 34.2 
 30.2 
 26.0 
 24.8 
 21.8 
 18.1 
 18.3 
 17.5 
 18.8 
 
 17.5 
 
 27.4 
 32.2 
 37.8 
 41.2 
 36.0 
 33.1 
 32.8 
 28.0 
 23.0 
 28.5 
 25.9 
 29.1 
 
 31.3 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 1,680 
 1,850 
 2,320 
 2,450 
 2,210 
 1,970 
 2,020 
 1,720 
 1,370 
 1,750 
 1,540 
 1,790 
 
 22, 700 
 
 Accu- 
 racy. 
 
 HONOKAHAU DITCH AT HONOKAWAI WEIR, NEAR HONOKAHAU, MAUI. 
 
 Location. — About 8 miles north of Lahaina and 6 miles south of Honolua ranch 
 
 office. 
 Records available. — January 1, 1910, to December 31, 1912. 
 Gage. — Friez automatic clock register. 
 
 Discharge measurements. — By contracted weir consisting of three 5-foot panels. 
 Cooperation. — Weir is the property of and records are furnished by the Honolua 
 
 Ranch Co, 
 
ISLAND OF MAUI. 
 
 161 
 
 Daily discharge, in million gallons, of Honokahau ditch at Honokawai weir, near Hono- 
 kahau, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 14.00 
 14.20 
 13.40 
 12.50 
 12.10 
 
 11.90 
 12.80 
 14.90 
 14.20 
 12.60 
 
 11.90 
 11.60 
 11.40 
 11.20 
 11.00 
 
 11.60 
 10.90 
 10.80 
 10.80 
 10.90 
 
 10.80 
 10.60 
 10.90 
 12.00 
 11.40 
 
 11.00 
 10.60 
 10.50 
 10.20 
 10.10 
 10.20 
 
 9.90 
 12.30 
 14.50 
 12.40 
 11.00 
 
 10.50 
 9.50 
 10.70 
 11.80 
 8.60 
 
 12.30 
 11.40 
 12.80 
 13.20 
 10.90 
 
 10.30 
 10.00 
 9.60 
 14.80 
 15.00 
 
 15.00 
 15.00 
 15.00 
 15.00 
 15.00 
 
 15.00 
 15.00 
 15.00 
 15.00 
 
 14.70 
 15.00 
 15.00 
 15.00 
 15.00 
 
 15.00 
 14.30 
 14.40 
 15.00 
 15.00 
 
 15.00 
 15.00 
 15.00 
 15.00 
 15.00 
 
 14.50 
 14.90 
 15.00 
 15.00 
 15.00 
 
 15.00 
 15.00 
 14.40 
 13.70 
 13.80 
 
 15.00 
 15.00 
 14.50 
 14.90 
 15.00 
 15.00 
 
 15.00 
 15.00 
 15.00 
 15.00 
 15.00 
 
 15.00 
 15.00 
 15. 00 
 15.00 
 15.00 
 
 15.00 
 15.00 
 15.00 
 15.00 
 15.00 
 
 15.00 
 15.00 
 15.00 
 15.00 
 15.00 
 
 15.00 
 15.00 
 15.00 
 15.00 
 15.00 
 
 15.00 
 15.00 
 15.00 
 15.00 
 15.00 
 
 15.00 
 15.00 
 15.00 
 15.00 
 14.90 
 
 14.70 
 13.60 
 14.90 
 13.90 
 13.10 
 
 13.40 
 13.50 
 13.20 
 13.10 
 13.10 
 
 13.40 
 13.10 
 13.20 
 15.00 
 15.00 
 
 15.00 
 14.30 
 13.50 
 13.70 
 10.00 
 
 14.60 
 15.00 
 15.00 
 15.00 
 15.00 
 15.00 
 
 13.60 
 13.10 
 12.60 
 12.20 
 12.00 
 
 11.80 
 12.20 
 14.80 
 13.60 
 14.20 
 
 15.00 
 14.30 
 14.90 
 14.40 
 15.00 
 
 15.00 
 14.90 
 13.60 
 13.40 
 12.30 
 
 13.20 
 12.90 
 13.20 
 14.20 
 12.90 
 
 11.80 
 11.60 
 8.90 
 10.70 
 10.40 
 
 10.30 
 11.60 
 11.80 
 11.70 
 12.20 
 
 13.30 
 13.30 
 13.00 
 13.30 
 14.90 
 
 14.90 
 14.70 
 14.30 
 13.60 
 14.50 
 
 12.40 
 12.80 
 12.80 
 11.20 
 10.80 
 
 10.80 
 13.30 
 12.30 
 11.10 
 12.20 
 
 10.50 
 10.20 
 11.20 
 10.90 
 10.40 
 9.70 
 
 9.40 
 9.10 
 9.10 
 9.20 
 8.90 
 
 9.00 
 8.90 
 11.20 
 10.40 
 12.00 
 
 12.50 
 13.80 
 12.80 
 7.30 
 12.50 
 
 14.70 
 13.70 
 11.60 
 10.30 
 9.70 
 
 9.30 
 9.20 
 11.80 
 9.80 
 9.10 
 
 8.70 
 11.70 
 12.10 
 11.40 
 12.30 
 11.10 
 
 10.10 
 9.70 
 13.50 
 10.70 
 10.00 
 
 9.20 
 11.30 
 12.50 
 10.40 
 
 9.60 
 
 8.60 
 8.20 
 7.60 
 7.80 
 7.60 
 
 7.60 
 7.40 
 7.60 
 8.00 
 8.30 
 
 9.20 
 
 8.40 
 7.50 
 7.60 
 7.50- 
 
 7.40 
 8.00 
 8.40 
 8.80 
 12.40 
 
 12.40 
 10.00 
 12.40 
 8.80 
 11.10 
 
 11.00 
 8.40 
 8.70 
 8.50 
 8.20 
 
 8.90 
 12.10 
 13.50 
 13.60 
 14.10 
 
 13.20 
 9.40 
 8.20 
 7.60 
 7.10 
 
 7.10 
 13.00 
 14.90 
 12.40 
 
 9.40 
 
 8.70 
 11.40 
 13.30 
 13.00 
 9.10 
 9.20 
 
 13.60 
 9.20 
 8.60 
 8.20 
 7.30 
 
 7.10 
 6.80 
 6.40 
 8.50 
 14.80 
 
 12.30 
 11.00 
 8.40 
 7.70 
 7.30 
 
 10.20 
 12.50 
 9.20 
 8.20 
 7.90 
 
 6.50 
 5.70 
 7.20 
 15.00 
 14.20 
 
 15.00 
 12.70 
 13.50 
 14.60 
 13.50 
 
 10.70 
 
 2 
 
 13.70 
 
 3 
 
 12.80 
 
 4 
 
 13.70 
 
 5 
 
 10.00 
 
 6 
 
 9.30 
 
 7 
 
 10.90 
 
 8 : 
 
 14.10 
 
 9 
 
 10.90 
 
 10 
 
 10.30 
 
 11 
 
 8.60 
 
 12 
 
 8.00 
 
 13 
 
 7.50 
 
 14 
 
 7.30 
 
 15 
 
 7.40 
 
 16 
 
 8.50 
 
 
 9.10 
 
 18 
 
 7.70 
 
 
 11.20 
 
 20 
 
 14.10 
 
 21 
 
 10.50 
 
 
 13. 40 
 
 23 
 
 14.50 
 
 24 
 
 13.80 
 
 25 
 
 11.40 
 
 26 
 
 10.60 
 
 
 11.60 
 
 28 
 
 9.10 
 
 
 9.90 
 
 30 
 
 9.50 
 
 
 11.20 
 
 
 
 Monthly discharge of Honokahau ditch at Honokawai weir, near Honokahau, Maui, 
 
 for 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 million 
 gallons). 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 14.9 
 15.0 
 15.0 
 15.0 
 15.0 
 15.0 
 14.9 
 14.7 
 13.5 
 14.9 
 15.0 
 14.5 
 
 15.0 
 
 10.1 
 8.6 
 13.7 
 15.0 
 10.0 
 8.9 
 9.7 
 7.3 
 7.4 
 7.1 
 5.7 
 7.3 
 
 5.7 
 
 11.70 
 12.60 
 14.80 
 15.00 
 14.10 
 13.10 
 12.30 
 10.70 
 9.03 
 10.60 
 10.10 
 10.70 
 
 12.10 
 
 363 
 366 
 459 
 450 
 437 
 393 
 380 
 333 
 271 
 329 
 303 
 331 
 
 4,420 
 
 14694°— wsp 336—14- 
 
 -11 
 
162 
 
 WATER RESOURCES OP HAWAII, 1912. 
 MISCELLANEOUS MEASUREMENTS. 
 
 The following miscellaneous discharge measurements have been 
 made by J. B. Stewart on streams of West Maui: 
 
 Miscellaneous measurements on West Maui in 1912. 
 Kahakuloa Stream above Kahakuloa, near Wailuku, Maui. 
 
 Aug. 28 
 
 Sept. 3. 
 
 14 
 
 Date. 
 
 Gage 
 height. 
 
 Feet. 
 0.68 
 .75 
 .65 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 5.60 
 7.88 
 6.10 
 
 Date. 
 
 Oct. 
 
 Gage 
 height. 
 
 Feet. 
 0.85 
 .77 
 1.05 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 9.92 
 8.58 
 19.3 
 
 Honokahua ditch above Honolua Stream, Honokahau, Maui. 
 
 Mar. 1 
 
 28.3 
 23.2 
 
 28.3 
 19.8 
 
 Sept. 13 
 
 22.1 
 
 16.1 
 
 1 
 
 
 
 
 
 South Waiehu ditch near Wailuku, Maui. 
 
 July 13 '. 
 
 0.48 
 .45 
 
 4.16 
 3.79 
 
 Sept. 6 0.42 
 
 Nov. 21 .43 
 
 3.47 
 
 16 
 
 4.27 
 
 
 
 
 
 East Maui. 
 
 KOOLAU DITCH REGION. 
 
 KOOLAU DITCH NEAR KEANAE, MAUI. 
 
 Location. — About 3 miles southwest of Keanae, at portal of tunnel extending 
 
 from Keanae Valley to Alo Stream. 
 Records available. — January 1, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m. 
 Channel. — Straight and probably permanent. 
 Discharge measurements. — Made from plank. 
 Accuracy. — Very good. 
 Cooperation. — Gage belongs to and records are furnished annually by East Maui 
 
 Ditch Co. 
 
 The following discharge measurement was made by J. B. Stewart: 
 January 11, 1912: Gage height, 24.5 inches; discharge, 44.8 second-feet. 
 
ISLAND OF MAUI. 
 
 163 
 
 Daily gage height, in inches, of Koolau ditch near Keanae, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. . 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 34.2 
 37.0 
 33.4 
 31.2 
 29.8 
 
 28.2 
 27.2 
 28.2 
 27.4 
 25.0 
 
 24.4 
 23.6 
 23.1 
 22.9 
 22.1 
 
 21.6 
 21.2 
 20.6 
 20.0 
 19.1 
 
 18.5 
 18.5 
 19.4 
 18.5 
 17.8 
 
 17.1 
 16.6 
 16.2 
 16.0 
 16.4 
 16.2 
 
 16.4 
 15.9 
 16.0 
 15.4 
 14.9 
 
 14.8 
 14.6 
 15.8 
 28.8 
 17.8 
 
 16.5 
 16.5 
 42.0 
 23.0 
 19.1 
 
 17.8 
 16.9 
 16.4 
 33.5 
 56.0 
 
 56.0 
 55.5 
 53.8 
 46.2 
 42.2 
 
 45.6 
 56.1 
 56.2 
 55.8 
 
 55.8 
 55.9 
 56.0 
 55.5 
 54.0 
 
 54.0 
 55.2 
 53.8 
 54.0 
 54.5 
 
 56.5 
 56.0 
 56.0 
 54.8 
 53.0 
 
 48.0 
 48.0 
 54.2 
 51.8 
 50.8 
 
 47.5 
 42.2 
 39.8 
 38.0 
 43.0 
 
 46.0 
 36.9 
 34.2 
 54.5 
 54.8 
 52.8 
 
 55.4 
 54.2 
 56.1 
 57.8 
 56.5 
 
 56.0 
 56.8 
 56.0 
 56.0 
 55.6 
 
 55.0 
 56.0 
 54.8 
 55.2 
 54.5 
 
 55.0 
 55.0 
 52.8 
 50.8 
 52.2 
 
 50.8 
 51.2 
 49.2 
 48.5 
 51.5 
 
 52.5 
 53.5 
 47.5 
 41.0 
 40.6 
 
 37.5 
 38.0 
 38.0 
 49.5 
 51.5 
 
 47.5 
 40.1 
 47.8 
 38.5 
 35.0 
 
 33.0 
 
 30.6 
 30.0 
 30.4 
 28.1 
 
 27.2 
 26.2 
 25.9 
 26.0 
 29.0 
 
 26.8 
 25.2 
 23.2 
 24.5 
 22.5 
 
 32.0 
 
 45.4 
 31.9 
 31.2 
 26.9 
 25.8 
 
 23.8 
 23.0 
 22.0 
 21.4 
 20.8 
 
 20.1 
 20.5 
 23.9 
 22.2 
 37.4 
 
 37.5 
 
 29.2 
 30.2 
 27.8 
 25.2 
 
 26.2 
 23.9 
 22.5 
 26.4 
 25.1 
 
 31.9 
 25.2 
 23.0 
 39.5 
 27.5 
 
 24.5 
 23.5 
 22.2 
 21.2 
 20.4 
 
 21.5 
 22.0 
 24.5 
 32.1 
 27.8 
 
 24.0 
 22.5 
 33.2 
 45.5 
 30.5 
 
 31.8 
 26.8 
 29.6 
 27.2 
 24.0 
 
 23.1 
 21.8 
 21.0 
 20.1 
 19.2 
 
 20.0 
 19.0 
 18.2 
 25.1 
 22.4 
 
 20.8 
 21.6 
 22.0 
 24.5 
 21.4 
 18.6 
 
 18.0 
 17.4 
 18.2 
 17.1 
 16.5 
 
 15.9 
 17.8 
 16.0 
 20.8 
 21.0 
 
 32.1 
 
 28.9 
 26.5 
 35.0 
 47.4 
 
 36.8 
 27.1 
 24.9 
 25.4 
 22.6 
 
 21.9 
 28.5 
 22.5 
 22.1 
 19.5 
 
 21.6 
 21.8 
 22.0 
 25.4 
 21.5 
 24.5 
 
 23.9 
 53.2 
 
 46.8 
 49.1 
 35.2 
 
 39.5 
 52.6 
 37.0 
 31.8 
 29.0 
 
 26.6 
 25.5 
 24.5 
 23.0 
 22.4 
 
 21.8 
 21.0 
 20.0 
 19.8 
 19.9 
 
 18.8 
 18.0 
 17.4 
 17.2 
 16.9 
 
 16.5 
 16.5 
 16.0 
 16.4 
 40.9 
 
 23.1 
 
 28.8 
 24.0 
 19.6 
 18.2 
 
 17.5 
 18.1 
 18.8 
 26.8 
 23.6 
 
 23.5 
 22.2 
 22.6 
 49.5 
 41.0 
 
 35.0 
 27.1 
 24.4 
 22.9 
 26.0 
 
 56.5 
 61.5 
 60.5 
 56.2 
 43.5 
 
 47.2 
 63.0 
 60.0 
 53.2 
 56.5 
 63.5 
 
 51.8 
 46.8 
 55.0 
 44.0 
 35.2 
 
 32.5 
 34.0 
 33.0 
 63.5 
 
 58.8 
 
 56.2 
 46.0 
 41.5 
 36.5 
 36.0 
 
 63.5 
 61.5 
 63.5 
 58.5 
 57.0 
 
 53.8 
 55.5 
 52.5 
 46.8 
 50.8 
 
 45.5 
 42.0 
 
 40.8 
 37.8 
 37.0 
 
 47.8 
 
 2. 
 
 63.5 
 
 3 
 
 59.2 
 
 4 
 
 55.0 
 
 5 
 
 53.5 
 
 6 
 
 52.0 
 
 7 
 
 50.5 
 
 8 
 
 44.2 
 
 9 
 
 40.2 
 
 10 
 
 38.5 
 
 11 
 
 30.0 
 
 12 
 
 32.8 
 
 13 
 
 32.0 
 
 14 
 
 34.0 
 
 15 
 
 31.8 
 
 16 
 
 45.0 
 
 17 
 
 33.2 
 
 18 
 
 49.8 
 
 19 
 
 51.2 
 
 20 
 
 50.0 
 
 21 
 
 54.0 
 
 22 • 
 
 58.5 
 
 23 
 
 59.5 
 
 
 56.5 
 
 25 
 
 51.5 
 
 26 
 
 56.5 
 
 27, 
 
 54.2 
 
 28 
 
 51.5 
 
 29 
 
 45.8 
 
 30 
 
 41.2 
 
 31 
 
 41.2 
 
 
 
 Daily discharge, in second-feet, of Koolau ditch near Keanae, Maui, for 1912. 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec 
 
 76.8 
 88.0 
 73.6 
 64.8 
 60.4 
 
 55.6 
 52.6 
 55.6 
 53.2 
 46.0 
 
 44.2 
 41.8 
 40.3 
 39.7 
 37.3 
 
 35.8 
 34.6 
 33.2 
 32.0 
 30.2 
 
 29.0 
 29.0 
 30.8 
 29.0 
 27.6 
 
 26.2 
 25.2 
 24.4 
 24.0 
 24.8 
 24.4 
 
 24.8 
 23.8 
 24.0 
 22.8 
 21.8 
 
 21.6 
 21.2 
 23.6 
 57.4 
 27.6 
 
 25.0 
 25.0 
 108.0 
 40.0 
 30.2 
 
 27.6 
 25.8 
 24.8 
 74.0 
 175.0 
 
 175.0 
 172.0 
 164.0 
 126.0 
 109.0 
 
 123.0 
 176.0 
 176.0 
 174.0 
 
 174.0 
 174.0 
 175.0 
 172.0 
 165.0 
 
 165.0 
 171.0 
 164.0 
 165.0 
 168.0 
 
 178.0 
 175.0 
 175.0 
 169.0 
 160.0 
 
 135.0 
 135.0 
 166.0 
 154.0 
 149.0 
 
 132.0 
 109.0 
 99.2 
 92.0 
 112.0 
 
 125.0 
 
 87.6 
 
 76.8 
 
 168.0 
 
 169.0 
 
 159.0 
 
 172.0 
 166.0 
 176.0 
 184.0 
 178.0 
 
 175.0 
 179.0 
 175.0 
 175.0 
 173.0 
 
 170.0 
 175.0 
 169.0 
 171.0 
 168.0 
 
 170.0 
 170.0 
 159.0 
 149.0 
 156.0 
 
 149.0 
 151.0 
 141.0 
 138.0 
 152.0 
 
 158.0 
 162.0 
 132.0 
 104.0 
 102.0 
 
 90.0 
 92.0 
 92.0 
 142.0 
 152.0 
 
 132.0 
 
 100.0 
 
 134.0 
 
 94.0 
 
 80.0 
 
 72.0 
 62.8 
 61.0 
 62.2 
 55.3 
 
 52.6 
 49.6 
 
 48.7 
 49.0 
 58.0 
 
 51.4 
 
 44.5 
 38.5 
 
 68.0 
 122.0 
 67.6 
 64.8 
 51.7 
 48.4 
 
 42.4 
 40.0 
 37.0 
 35.2 
 33.6 
 
 32.2 
 33.0 
 42.7 
 37.6 
 
 90.0 
 
 61.6 
 54.4 
 
 49.6 
 42.7 
 38.5 
 50.2 
 46.3 
 
 67.6 
 46.6 
 40. a 
 98.0 
 53.5 
 
 44.5 
 41.5 
 37.6 
 34.6 
 32.8 
 
 35.5 
 37.0 
 44.5 
 68.4 
 54.4 
 
 43.0 
 
 38.5 
 72.8 
 122.0 
 62.5 
 
 67.2 
 51.4 
 59.6 
 52.6 
 43.0 
 
 40.3 
 36.4 
 34.0 
 32.2 
 30.4 
 
 32.0 
 30.0 
 28.4 
 46.3 
 38.2 
 
 33.6 
 35.8 
 37.0 
 44.5 
 35.2 
 29.2 
 
 28.0 
 26.8 
 28.4 
 26.2 
 25.0 
 
 23.8 
 27.6 
 24.0 
 33.6 
 34.0 
 
 68.4 
 57.7 
 50.5 
 80.0 
 132.0 
 
 87.2 
 52.3 
 45.7 
 47.2 
 38.8 
 
 36.7 
 56.5 
 38.5 
 37.3 
 31.0 
 
 35.8 
 36.4 
 37.0 
 47.2 
 35.5 
 44.5 
 
 42.7 
 161.0 
 129.0 
 140.0 
 
 98.0 
 158.0 
 88.0 
 67.2 
 58.0 
 
 50.8 
 47.5 
 44.5 
 40.0 
 38.2 
 
 34.0 
 32.0 
 31.6 
 31.8 
 
 29.6 
 28.0 
 26.8 
 26.4 
 
 25.0 
 25.0 
 24.0 
 24.8 
 104.0 
 
 40.3 
 57.4 
 43.0 
 31.2 
 28.4 
 
 27.0 
 
 28.2 
 29.6 
 51.4 
 41.8 
 
 41.5 
 37.6 
 38.8 
 142.0 
 104.0 
 
 80.0 
 52.3 
 44.2 
 39.7 
 49.0 
 
 178.0 
 202.0 
 198.0 
 176.0 
 114.0 
 
 131.0 
 210.0 
 195.0 
 161.0 
 178.0 
 212.0 
 
 154.0 
 129.0 
 170.0 
 116.0 
 80.8 
 
 70.0 
 
 76.0 
 
 72.0 
 
 212.0 
 
 189.0 
 
 176.0 
 
 125.0 
 
 106.0 
 
 86.0 
 
 84.0 
 
 212.0 
 202.0 
 212.0 
 188.0 
 180.0 
 
 164.0 
 172.0 
 158.0 
 129.0 
 149.0 
 
 122.0 
 108.0 
 103.0 
 91.2 
 88.0 
 
164 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of Koolau ditch near Keanae, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 88.0 
 176.0 
 178.0 
 184.0 
 152.0 
 
 98.0 
 122.0 
 132.0 
 161.0 
 212.0 
 212.0 
 212.0 
 
 24.0 
 21.2 
 76.8 
 102.0 
 38.5 
 32.2 
 28.4 
 23.8 
 24.0 
 27.0 
 70.0 
 61.0 
 
 41.6 
 
 76.5 
 
 149.0 
 
 160.0 
 
 74.9 
 
 48.6 
 
 45.7 
 
 44.3 
 
 58.3 
 
 95.6 
 
 137.0 
 
 134.0 
 
 212.0 
 
 21.2 
 
 2,560 
 4,400 
 9,160 
 9,520 
 4,610 
 2,890 
 2,810 
 2,720 
 3,470 
 5,880 
 8,150 
 8,230 
 
 64, 400 
 
 SPRECKELS DITCH REGION. 
 HAIPUAENA STREAM NEAR HUELO, MAUI. 
 
 Location. — About 6J miles by trail southeast of Huelo post office, about 400 feet 
 below point where the Spreckels ditch joins the stream. 
 
 Records available. — December 18, 1910, to December 31, 1912. 
 
 Drainage area. — Not mapped. 
 
 Gage. — Vertical staff; read once daily, about 4 p. m.; datum unchanged. 
 
 Channel. — Rough and shifting. 
 
 Discharge measurements. — Made by wading; no equipment for flood measure- 
 ments. 
 
 Accuracy. — A fairly well defined rating curve has been developed for ordinary 
 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 Discharge measurements of Haipuaena Stream near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 23 
 Nov. 10 
 
 J. B. Stewart 
 
 Feet. 
 0.40 
 1.30 
 
 Sec.-ft. 
 a6.4 
 
 do 
 
 6 47.0 
 
 
 
 
 a Measurements at Spreckels ditch station No. 4. 
 b Haipuaena and Spreckels ditch at station No. 3. 
 
 Daily gage height, in feet, of Haipuaena Stream near Huelo, Maui, for 1912. 
 [Kumagai, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.78 
 
 1.00 
 
 .80 
 
 .75 
 
 .70 
 
 .68 
 .65 
 .68 
 .73 
 .63 
 
 0.31 
 .30 
 .30 
 .30 
 .28 
 
 .27 
 .23 
 .70 
 .43 
 .49 
 
 1.40 
 1.65 
 1.53 
 1.43 
 1.38 
 
 1.35 
 1.60 
 1.33 
 1.53 
 1.50 
 
 1.48 
 1.50 
 1.60 
 2.90 
 1.80 
 
 1.40 
 2.50 
 2.20 
 1.50 
 1.60 
 
 0.93 
 .93 
 1.30 
 1.40 
 1.33 
 
 1.25 
 1.10 
 1.30 
 1.00 
 ,90 
 
 0.63 
 .63 
 .60 
 .53 
 .50 
 
 .47 
 .50 
 .70 
 .83 
 1.50 
 
 0.85 
 1.20 
 1.30 
 1.33 
 1.23 
 
 .95. 
 
 .82 
 1.50 
 1.30 
 1.03 
 
 0.60 
 
 .58 
 .63 
 .50 
 .48 
 
 .45 
 .45 
 .43 
 .95 
 .95 
 
 0.80 
 1.70 
 1.33 
 1.30 
 1.00 
 
 1.23 
 
 1.30 
 
 1.03 
 
 .90 
 
 .85 
 
 0.78 
 
 1.60 
 
 .78 
 
 .60 
 
 .55 
 
 .45 
 .50 
 .50 
 .71 
 .63 
 
 1.30 
 
 1.10 
 
 1.30 
 
 .98 
 
 .90 
 
 .88 
 
 .88 
 
 .75 
 
 2.70 
 
 1.50 
 
 1.20 
 
 2 
 
 1.55 
 
 3 
 
 1.65 
 
 4 
 
 1.35 
 
 5 
 
 1.18 
 
 6 
 
 .73 
 
 7... 
 
 1.20 
 
 8 
 
 1.05 
 
 9 
 
 .98 
 
 10 
 
 .90 
 
ISLAND OF MAUI. 165 
 
 Daily gage height, in feet, of Haipuaena Stream near Huelo, Maui, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 11 
 
 0.58 
 .53 
 
 .51 
 .50 
 
 .48 
 
 .45 
 .43 
 .41 
 .40 
 .39 
 
 .38 
 .35 
 .34 
 
 .68 
 .48 
 
 .39 
 .36 
 .33 
 .32 
 .30 
 .40 
 
 0.40 
 
 1.00 
 
 .80 
 
 .58 
 
 .48 
 
 .48 
 
 .48 
 
 .40 
 
 1.23 
 
 2.00 
 
 2.50 
 1.50 
 1.33 
 1.10 
 1.13 
 
 1.45 
 1.90 
 1.55 
 1.45 
 
 2.90 
 1.60 
 1.55 
 1.40 
 1.30 
 
 1.18 
 1.38 
 1.40 
 1.50 
 1.30 
 
 1.20 
 1.00 
 1.15 
 1.00 
 1.00 
 
 1.35 
 1.03 
 .98 
 .85 
 1.98 
 1.58 
 
 1.40 
 1.53 
 1.35 
 1.45 
 1.38 
 
 1.50 
 1.45 
 1.40 
 1.33 
 1.68 
 
 1.35 
 1.40 
 1.20 
 1.15 
 1.40 
 
 1.48 
 1.33 
 1.15 
 1.05 
 1.00 
 
 0.83 
 .78 
 .73 
 .70 
 .65 
 
 .65 
 .60 
 .60 
 .60 
 .75 
 
 .63 
 .53 
 .50 
 .68 
 .50 
 
 1.60 
 1.30 
 1.15 
 
 .90 
 .78 
 .70 
 
 1.40 
 
 1.00 
 
 1.10 
 
 .85 
 
 .93 
 
 1.00 
 .78 
 .70 
 .98 
 
 1.25 
 
 1.30 
 
 *.83 
 
 .80 
 
 1.10 
 
 .83 
 
 .78 
 .83 
 .75 
 .68 
 ,63 
 
 1.20 
 
 .95 
 
 1.10 
 
 1.13 
 
 .93 
 
 .83 
 .78 
 .75 
 .70 
 .70 
 
 .68 
 .63 
 .58 
 .93 
 .93 
 
 .80 
 .95 
 .80 
 1.03 
 .73 
 .65 
 
 1.13 
 1.00 
 1.10 
 1.65 
 1.33 
 
 1.03 
 
 .88 
 .85 
 .88 
 .75 
 
 .70 
 1.25 
 .83 
 .70 
 .65 
 
 .80 
 .83 
 .63 
 .90 
 .83 
 .80 
 
 0.80 
 .70 
 .70 
 .63 
 .60 
 
 .58 
 .58 
 .50 
 .48 
 .50 
 
 .45 
 .43 
 .43 
 .45 
 .40 
 
 .38 
 .35 
 .33 
 .45 
 1.50 
 
 0.65 
 
 .80 
 
 .79 
 
 1.33 
 
 1.05 
 
 .83 
 .73 
 
 .58 
 .53 
 .78 
 
 1.65 
 1.5*5 
 1.45 
 1.33 
 1.05 
 
 1.35 
 2.10 
 1.50 
 1.30 
 1.35 
 1.25 
 
 1.33 
 
 1.10 
 
 1.00 
 
 .90 
 
 .80 
 
 2.10 
 1.48 
 2.00 
 1.35 
 1.50 
 
 1.35 
 1.28 
 1.20 
 1.03 
 1.35 
 
 1.60 
 .97 
 .95 
 .80 
 .90 
 
 1.83 
 
 12 
 
 .80 
 
 13 
 
 .75 
 
 14 
 
 .93 
 
 15 
 
 .75 
 
 16 
 
 .90 
 
 17 
 
 .73 
 
 18 
 
 .80 
 
 19 
 
 2.05 
 
 20 
 
 1.10 
 
 21.... 
 
 1.90 
 
 22 
 
 1.70 
 
 23 
 
 2.00 
 
 24 
 
 1.53 
 
 25 
 
 1.30 
 
 25 
 
 1.45 
 
 27 
 
 1.30 
 
 28 
 
 1.35 
 
 29 
 
 1.15 
 
 30.... 
 
 1.03 
 
 31 
 
 .98 
 
 
 
 Daily discharge, in second-feet, of Haipuaena Stream near Euelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 17.7 
 
 4.2 
 
 52.0 
 
 57.6 
 
 24.5 
 
 12.0 
 
 20.8 
 
 11.0 
 
 IS. 5 
 
 17.7 
 
 45.0 
 
 28.0 
 
 4.0 
 
 69.5 
 
 59.0 
 
 24.5 
 
 12.0 
 
 39.0 
 
 10.5 
 
 73.0 
 
 66.0 
 
 33.0 
 
 18.5 
 
 4.0 
 
 61.1 
 
 66.0 
 
 45.0 
 
 11.0 
 
 45.0 
 
 12.0 
 
 47.1 
 
 17.7 
 
 45.0 
 
 16.5 
 
 4.0 
 
 54.1 
 
 169.0 
 
 52.0 
 
 9.2 
 
 47.1 
 
 8.5 
 
 45.0 
 
 11.0 
 
 27.0 
 
 14.5 
 
 3.7 
 
 50.6 
 
 80.0 
 
 47.1 
 
 8.5 
 
 40.8 
 
 8.0 
 
 28.0 
 
 9.8 
 
 23.0 
 
 13.8 
 
 3.6 
 
 48.5 
 
 52.0 
 
 42.0 
 
 7.8 
 
 25.5 
 
 7.2 
 
 40.8 
 
 7.2 
 
 22.1 
 
 12.8 
 
 3.0 
 
 66.0 
 
 136.0 
 
 33.0 
 
 8.5 
 
 19.4 
 
 7.2 
 
 45.0 
 
 8.5 
 
 22.1 
 
 13.8 
 
 14.5 
 
 47.1 
 
 112.0 
 
 45.0 
 
 14.5 
 
 59.0 
 
 6.8 
 
 29.5 
 
 8.5 
 
 16.5 
 
 15.7 
 
 6.8 
 
 61.1 
 
 59.0 
 
 28.0 
 
 19.8 
 
 45.0 
 
 25.5 
 
 23.0 
 
 14.9 
 
 152.0 
 
 12.0 
 
 8.2 
 
 59.0 
 
 66.0 
 
 23.0 
 
 59.0 
 
 29.5 
 
 25.5 
 
 20.8 
 
 12.0 
 
 59.0 
 
 10.5 
 
 6.0 
 
 169.0 
 
 52.0 
 
 19.8 
 
 52.0 
 
 39.0 
 25.5 
 
 34.8 
 
 18.5 
 
 12.8 
 
 47.1 
 
 9.6 
 
 28.0 
 
 66.0 
 
 61.1 
 
 17.7 
 
 28.0 
 
 28.0 
 
 14.5 
 
 18.5 
 
 33.0 
 
 8.8 
 
 18.5 
 
 62.5 
 
 48.5 
 
 15.7 
 
 33.0 
 
 33.0 
 
 33.0 
 
 14.5 
 
 18.1 
 
 28.0 
 
 8.5 
 
 10.5 
 
 52.0 
 
 55.5 
 
 14.5 
 
 20.8 
 
 24.8 
 
 69 5 
 
 12.0 
 
 47.1 
 
 23.0 
 
 8.0 
 
 8.0 
 
 45.0 
 
 50.6 
 
 12.8 
 
 24.5 
 
 24.5 
 
 47.1 
 
 11.0 
 
 30.5 
 
 18.5 
 
 7.2 
 
 8.0 
 
 37.8 
 
 59.0 
 
 12.8 
 
 28.0 
 
 19.8 
 
 29.5 
 
 10.5 
 
 19.8 
 
 104.0 
 
 6.8 
 
 8.0 
 
 50.6 
 
 55.5 
 
 11.0 
 
 17.7 
 
 17.7 
 
 22.1 
 
 10.5 
 
 15.7 
 
 57.6 
 
 6.3 
 
 6.0 
 
 52.0 
 
 52.0 
 
 11.0 
 
 14.5 
 
 16.5 
 
 20.8 
 
 8.5 
 
 10.5 
 
 96.0 
 
 6.0 
 
 40.8 
 
 59.0 
 
 47.1 
 
 11.0 
 
 27.0 
 
 14.5 
 
 22.1 
 
 8.0 
 
 9.2 
 
 48.5 
 
 5.8 
 
 96.0 
 
 45.0 
 
 71.6 
 
 16.5 
 
 42.0 
 
 14.5 
 
 16.5 
 
 8.5 
 
 17.7 
 
 59.0 
 
 5.6 
 
 136.0 
 
 39.0 
 
 48.5 
 
 12.0 
 
 45.0 
 
 13.8 
 
 14.5 
 
 7.2 
 
 69.5 
 
 48.5 
 
 5.0 
 
 59.0 
 
 28.0 
 
 52.0 
 
 9.2 
 
 19.8 
 
 12.0 
 
 42.0 
 
 6.8 
 
 62.5 
 
 43.8 
 
 4.8 
 
 47.1 
 
 36.0 
 
 39.0 
 
 8.5 
 
 18.5 
 
 10.5 
 
 19.8 
 
 6.8 
 
 55.5 
 
 39.0 
 
 13.8 
 
 33.0 
 
 28.0 
 
 36.0 
 
 13.8 
 
 33.0 
 
 24.5 
 
 14.5 
 
 7.2 
 
 47.1 
 
 29.5 
 
 8.0 
 
 34.8 
 
 28.0 
 
 52.0 
 
 8.5 
 
 19.8 
 
 24.5 
 
 12.8 
 
 6.0 
 
 30.5 
 
 48.5 
 
 5.8 
 
 55.5 
 
 48.5 
 
 57.6 
 
 66.0 
 
 17.7 
 
 18.5 
 
 18.5 
 
 5.6 
 
 48.5 
 
 66.0 
 
 5.2 
 
 88.0 
 
 29.5 
 
 47.1 
 
 45.0 
 
 19.8 
 
 25.5 
 
 19.8 
 
 5.0 
 
 104.0 
 
 26.5 
 
 4.6 
 
 62.5 
 
 27.0 
 
 36.0 
 
 36.0 
 
 16.5 
 
 18.5 
 
 12.0 
 
 4.6 
 
 59.0 
 
 25.5 
 
 4.4 
 
 55.5 
 
 20.8 
 
 30.5 
 
 23.0 
 
 13.8 
 
 29.5 
 
 23.0 
 
 7.2 
 
 45.0 
 
 18.5 
 
 4.0 
 
 
 94.4 
 
 28.0 
 
 17.7 
 
 12.0 
 
 15.7 
 
 19.8 
 
 59.0 
 
 48.5 
 
 23.0 
 
 6.0 
 
 
 64.6 
 
 
 14.5 
 
 
 12.8 
 
 18.5 
 
 
 42.0 
 
 
 Dec. 
 
 39.0 
 62.5 
 69.5 
 48.5 
 37.8 
 
 15.7 
 39.0 
 30.5 
 27.0 
 23.0 
 
 82.4 
 18.5 
 16.5 
 24.5 
 16.5 
 
 23.0 
 15.7 
 18.5 
 100.0 
 33.0 
 
 88.0 
 73.0 
 96.0 
 61.1 
 45.0 
 
 55.5 
 45.0 
 48.5 
 36.0 
 29.5 
 27.0 
 
166 WATEE RESOUECES OF HAWAII, 1912. 
 
 Monthly discharge of Haipuaena Stream near Huelo, Maui, for 1912. 
 
 Month. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. 
 
 28.0 
 
 136.0 
 
 169.0 
 
 169.0 
 
 66.0 
 
 59.0 
 
 59.0 
 
 69.5 
 
 73.0 
 
 104.0 
 
 152.0 
 
 100.0 
 
 ).0 
 
 4.0 
 3.0 
 20.8 
 28.0 
 8.5 
 7.8 
 10.5 
 
 7.2 
 
 16.5 
 15.7 
 
 3.0 
 
 9.94 
 29.60 
 53.30 
 61-20 
 24.60 
 22.20 
 26.30 
 21.30 
 20.10 
 31.80 
 44.30 
 43.40 
 
 32.30 
 
 Run-off 
 (total in 
 acre-feet). 
 
 611 
 1,700 
 3,280 
 3,640 
 1,510 
 1,320 
 1,620 
 1,310 
 1,200 
 1,960 
 2,640 
 2,670 
 
 23,500 
 
 Accu- 
 racy. 
 
 PUOHAKAMOA STREAM NEAR HUELO, MAUI. 
 
 Location. — About 6f miles by trail southeast of Huelo post office, immediately below 
 
 point where Spreckels ditch falls into stream. 
 Records available. — December 18, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, at no regular hour, but usually about 5 p.m.; 
 
 datum unchanged. 
 Channel. — Practically permanent. 
 Discharge measurements. — Made by wading. 
 Accuracy. — Records good. 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
 Discharge measurements of Puohalcamoa Stream near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 23 
 Nov. 8 
 
 J. B . Stewart 
 
 Feet. 
 0.45 
 1.64 
 
 Sec-feet. 
 11.1 
 
 do 
 
 67.1 
 
 
 
 
 Daily gage height, in feet, of Puohahamoa Stream near Huelo, Maui, for 1912. 
 
 [Tokunaga, observer.] 
 
 Day. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 Jan. 
 
 1.01 
 1.22 
 .92 
 .81 
 .79 
 
 .73 
 .87 
 .81 
 .70 
 .67 
 
 .59 
 .55 
 .52 
 .51 
 .50 
 
 .48 
 .45 
 .42 
 .40 
 
 Feb. 
 
 0.28 
 
 .26 
 .24 
 
 .22 
 .21 
 
 .72 
 .48 
 .32 
 
 .30 
 1.65 
 1.38 
 .67 
 .32 
 
 .32 
 .31 
 .32 
 1.40 
 2.25 
 
 Mar. 
 
 1.90 
 2.16 
 2.20 
 1.64 
 1.52 
 
 3.25 
 2.25 
 2.70 
 1.75 
 1.48 
 
 1.29 
 1.38 
 1.73 
 1.80 
 1.78 
 
 Apr. 
 
 1.76 
 1.91 
 2.12 
 4.50 
 2.41 
 
 1.70 
 
 2.18 
 3.50 
 1.95 
 1.82 
 
 1.65 
 1.91 
 1.46 
 2.05 
 1.65 
 
 1.64 
 1.60 
 1.51 
 1.50 
 1.95 
 
 May. 
 
 1.05 
 1.10 
 1.40 
 1.46 
 1.58 
 
 1.39 
 1.19 
 1.53 
 1.18 
 1.05 
 
 .97 
 .90 
 .84 
 .79 
 .70 
 
 .68 
 .67 
 .65 
 .70 
 
 June. 
 
 0.73 
 
 .72 
 .67 
 .54 
 .43 
 
 .40 
 .43 
 .81 
 .67 
 2.30 
 
 1.70 
 1.05 
 1.60 
 .97 
 1.22 
 
 1.09 
 .95 
 .92 
 1.08 
 1.10 
 
 July. 
 
 1.06 
 1.49 
 1.72 
 1.68 
 1.28 
 
 1.04 
 .90 
 1.60 
 1.50 
 1.22 
 
 1.15 
 
 1.06 
 1.13 
 1.42 
 1.18 
 
 .90 
 .79 
 .70 
 
 Aug. 
 
 0.66 
 .64 
 .70 
 .46 
 .42 
 
 .41 
 .43 
 .41 
 
 1.28 
 
 1.30 
 1.09 
 1.23 
 1.43 
 1.40 
 
 1.18 
 .97 
 .91 
 
 1.02 
 
 Sept. 
 
 0.98 
 2.18 
 1.50 
 1.40 
 1.17 
 
 1.40 
 1.62 
 1.30 
 1.04 
 
 .87 
 .81 
 .75 
 .70 
 
 .62 
 .53 
 .50 
 .54 
 
 Oct. 
 
 1.00 
 1.50 
 1.25 
 .58 
 .55 
 
 .50 
 .52 
 .52 
 1.00 
 .67 
 
 .82 
 
 2.10 
 1.15 
 
 1.00 
 .75 
 .71 
 .65 
 .70 
 
 Nov. 
 
 1.50 
 1.30 
 1.43 
 1.13 
 .90 
 
 .35 
 1.69 
 
 1.50 
 
 1.28 
 1.12 
 1.01 
 .88 
 
 3.20 
 2.15 
 2.40 
 1.82 
 1.65 
 
 Dec. 
 
 1.50 
 2.20 
 3.34 
 1.42 
 1.45 
 
 1.12 
 1.35 
 1.18 
 1.05 
 1.00 
 
 .85 
 .81 
 LOO 
 
 .85 
 
 .82 
 2.50 
 1.75 
 1.67 
 
ISLAND OF MAUI. 167 
 
 Daily gage height, in jeet x of Puohakamoa Stream near Huelo, Maui, for 1912 — Contd. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 6.37 
 .35 
 .32 
 
 .80 
 .45 
 
 .32 
 .30 
 .29 
 .29 
 .28 
 .39 
 
 2.89 
 1.95 
 1.60 
 1.34 
 1.35 
 
 1.24 
 
 2.62 
 2.11 
 1.92 
 
 1.42 
 1.22 
 1.10 
 1.07 
 1.00 
 
 1.25 
 1.12 
 1.00 
 .98 
 2.48 
 1.57- 
 
 1.64 
 
 1.70 
 1.65 
 
 L80 
 
 1.82 
 
 1.58 
 1.52 
 1.28 
 1.18 
 
 0.88 
 .56 
 .50 
 .71 
 .55 
 
 1.61 
 1.42 
 1.20 
 .98 
 .96 
 .73 
 
 1.38 
 .91 
 .72 
 
 1.35 
 .91 
 
 .89 
 .97 
 
 .88 
 .74 
 .68 
 
 0.66 
 .70 
 .65 
 
 1.32 
 .97 
 
 .89 
 1.03 
 
 .93 
 1.12 
 
 .70 
 
 .68 
 
 0.73 
 1.45 
 .90 
 .71 
 
 .68 
 
 .99 
 .87 
 .68 
 1.41 
 .95 
 .94 
 
 0.50 
 .48 
 .43 
 .48 
 .45 
 
 .45 
 .44 
 .42 
 .50 
 1.40 
 
 0.95 
 2.40 
 1.78 
 1.47 
 1.10 
 
 1.03 
 3.03 
 1.88 
 1.50 
 1.62 
 1.54 
 
 1.68 
 1.39 
 1.65 
 1.19 
 1.62 
 
 1.25 
 1.17 
 1.02 
 .92 
 .88 
 
 1.84 
 
 22 
 
 1.80 
 
 23 
 
 3.40 
 
 24 
 
 1.65 
 
 25 
 
 1.30 
 
 26 
 
 1.45 
 
 27. 
 
 1.38 
 
 28 
 
 1.40 
 
 29 
 
 1.23 
 
 30 
 
 1.30 
 
 31 
 
 1.12 
 
 
 
 Daily discharge, in second-feet, 
 
 of Puohakamoa Stream near Huelo, 
 
 Maui, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 34.5 
 45.0 
 30.0 
 24.5 
 23.6 
 
 21.2 
 27.5 
 24.5 
 20.0 
 18.8 
 
 15.6 
 
 14.0 
 12.8 
 12.4 
 12.0 
 
 11.2 
 10.0 
 8.8 
 8.0 
 
 7.7 
 
 7.1 
 6.5 
 5.6 
 24.0 
 10.0 
 
 5.6 
 5.0 
 
 4.8 
 4.8 
 4.6 
 
 7.7 
 
 4.6 
 4.6 
 4.6 
 4.2 
 3.8 
 
 3.4 
 3.2 
 20.8 
 11.2 
 5.6 
 
 5.0 
 69.0 
 53.0 
 
 18.8 
 5.6 
 
 5.6 
 
 5.3 
 
 5.6 
 
 54.0 
 
 110.0 
 
 160.0 
 88.5 
 66.0 
 51.0 
 51.5 
 
 46.0 
 139. 
 99.7 
 86.4 
 
 85.0 
 103.0 
 106.0 
 68.4 
 61.2 
 
 60.0 
 90.6 
 73.2 
 72.0 
 81.5 
 
 189.0 
 110.0 
 145.0 
 75.0 
 58.8 
 
 48.5 
 53.0 
 73.8 
 78.0 
 76.8 
 
 55.2 
 45.0 
 39.0 
 37.5 
 34.0 
 
 46.5 
 40.0 
 34.0 
 33.0 
 127.0 
 64.2 
 
 75.6 
 
 85.7 
 100.0 
 289.0 
 122.0 
 
 72.0 
 105.0 
 209.0 
 
 88.5 
 79.4 
 
 69.0 
 85.7 
 57.6 
 95.5 
 69.0 
 
 68.4 
 66.0 
 60.6 
 60.0 
 
 88.5 
 
 68.4 
 72.0 
 69.0 
 71.4 
 78.0 
 
 79.4 
 64.8 
 61.2 
 48.0 
 43.0 
 
 36.5 
 39.0 
 54.0 
 57.6 
 64.8 
 
 53.5 
 43.5 
 61.8 
 43.0 
 36.5 
 
 32.5 
 29.0 
 26.0 
 23.6 
 20.0 
 
 19.2 
 
 18.8 
 18.0 
 20.0 
 29.0 
 
 28.0 
 14.4 
 12.0 
 20.4 
 14.0 
 
 66.6 
 55.2 
 44.0 
 33.0 
 32.0 
 21.2 
 
 21.2 
 
 20.8 
 18.8 
 13.6 
 9.2 
 
 8.0 
 
 9.2 
 
 24.5 
 
 18.8 
 
 113.0 
 
 72.0 
 36.5 
 66.0 
 32.5 
 45.0 
 
 38.5 
 31.5 
 30.0 
 38.0 
 39.0 
 
 53.0 
 29.5 
 20.8 
 51.5 
 29.5 
 
 28.5 
 32.5 
 28.0 
 21.6 
 19.2 
 
 37.0 
 59.4 
 73.2 
 70.8 
 48.0 
 
 36.0 
 29.0 
 66.0 
 60.0 
 45.0 
 
 41.5 
 37.0 
 40.5 
 55.2 
 43.0 
 
 33.0 
 29.0 
 23.6 
 20.0 
 19.6 
 
 18.4 
 20.0 
 18.0 
 50.0 
 32.5 
 
 28.5 
 35.5 
 30.5 
 40.0 
 20.0 
 19.2 
 
 m 
 
 20.0 
 10.4 
 8.8- 
 
 8.4 
 
 9.2 
 
 8.4 
 
 48.0 
 
 33.0 
 
 49.0 
 38.5 
 45.5 
 55.8 
 54.0 
 
 43.0 
 32.5 
 29.5 
 35.0 
 33.5 
 
 21.2 
 57.0 
 29.0 
 20.4 
 19.2 
 
 33.5 
 27.5 
 19.2 
 54.6 
 31.5 
 31.0 
 
 33.0 
 105.0 
 60.0 
 54.0 
 42.5 
 
 54.0 
 67.2 
 49.0 
 36.0 
 33.0 
 
 27.5 
 24.5 
 22.0 
 20.0 
 19.2 
 
 17.2 
 
 16.8 
 13.2 
 12.0 
 13.6 
 
 12.0 
 
 11.2 
 9.2 
 11.2 
 10.0 
 
 10.0 
 9.6 
 
 8.8 
 12.0 
 54.0 
 
 34.0 
 60.0 
 46.5 
 15.2 
 14.0 
 
 12.0 
 
 12.8 
 12.8 
 34.0 
 18.8 
 
 25.0 
 28.0 
 24.0 
 99.0 
 41.5 
 
 34.0 
 22.0 
 20.4 
 18.0 
 20.0 
 
 31.5 
 121.0 
 76.8 
 58.2 
 39.0 
 
 35.5 
 171.0 
 83.6 
 60.0 
 67.2 
 62.4 
 
 60.0 
 49.0 
 55.8 
 40.5 
 29.0 
 
 28.0 
 27.0 
 28.0 
 6.5 
 71.4 
 
 60.0 
 48.0 
 40.0 
 34.5 
 28.0 
 
 185.0 
 102.0 
 121.0 
 79.4 
 69.0 
 
 70.8 
 53.5 
 69.0 
 43.5 
 67.2 
 
 46.5 
 
 42.5 
 35.0 
 30.0 
 28.0 
 
 60.0 
 
 2 ; 
 
 106.0 
 
 3 „ 
 
 196.0 
 
 4 
 
 55.2 
 
 5 
 
 57.0 
 
 6 
 
 40.0 
 
 7 
 
 51.5 
 
 8 
 
 43.0 
 
 9 
 
 36.5 
 
 10 
 
 34.0 
 
 11 
 
 28.5 
 
 12 
 
 26.5 
 
 13 
 
 24.5 
 
 14 
 
 34.0 
 
 15 
 
 26.5 
 
 16 
 
 25.0 
 
 17 
 
 25.0 
 
 18 
 
 129.0 
 
 19 
 
 75.0 
 
 20 
 
 70.2 
 
 21.... 
 
 80 8 
 
 22 
 
 78 
 
 23 
 
 201 
 
 24 
 
 69 
 
 25 
 
 49 
 
 26 
 
 57 
 
 27 
 
 53 
 
 28 
 
 54 
 
 29 
 
 45 5 
 
 30 
 
 49 
 
 31 
 
 40 
 
 
 
 Monthly discharge of Puohakamoa Stream near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 45.0 
 160.0 
 189.0 
 289.0 
 
 66.6 
 113.0 
 
 73.2 
 
 57.0 
 105.0 
 171.0 
 185.0 
 201.0 
 
 4.6 
 
 3.2 
 
 33.0 
 
 43.0 
 
 12.0 
 
 8.0 
 
 18.0 
 
 8.4 
 
 8.8 
 
 12.0 
 
 6.5 
 
 24.5 
 
 15.1 
 40.9 
 73.0 
 86.7 
 34.4 
 33.3 
 38.0 
 30.4 
 28.9 
 45.1 
 54.9 
 61.9 
 
 928 
 2,350 
 4,490 
 5,160 
 2,120 
 1,980 
 2,340 
 1,870 
 1,720 
 2,770 
 3,270 
 3,810 
 
 B 
 
 February 
 
 B 
 
 March 
 
 B 
 
 April 
 
 B 
 
 May 
 
 A 
 
 June 
 
 A 
 
 July ;. . 
 
 A 
 
 August 
 
 A. 
 
 September 
 
 B. 
 
 October 
 
 B. 
 
 November 
 
 B. 
 
 December 
 
 B. 
 
 
 
 The year 
 
 289.0 
 
 3.2 
 
 45.2 
 
 32,800 
 
 
 
 
168 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 ALO STREAM NEAR HUELO, MAUI. 
 
 Location. — About 5 miles by trail southeast of Huelo post office, immediately below 
 wagon bridge where Old Spreckels ditch trail crosses stream. 
 
 Records available. — December 18, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, about 5.30 a. m. and 5 p.m.; datum unchanged. 
 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made by wading. 
 
 Accuracy. — Gage heights at low stages may be affected by inflow from Spreckels 
 ditch below the gage. 
 
 Discharge measurements of Alo Stream near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 22 
 Dec. 20 
 
 J. B. Stewart. 
 C.T.Bailey.. 
 
 Feet. 
 1.40 
 1.90 
 
 Sec.-ft. 
 0.97 
 5.97 
 
 Daily gage height, in feet, of Alo Stream near Huelo, Maui, for 1912. 
 
 [Tokunaga.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.72 
 1.84 
 1.70 
 1.64 
 1.60 
 
 1.58 
 1.54 
 1.57 
 1.59 
 1.52 
 
 1.46 
 1.44 
 1.40 
 1.40 
 1.38 
 
 1.36 
 1.34 
 1.32 
 1.30 
 1.30 
 
 1.30 
 1.28 
 1.25 
 1.40 
 1.33 
 
 1.25 
 1.22 
 1.20 
 1.20 
 1.18 
 1.22 
 
 1.20 
 1.18 
 1.17 
 1.17 
 1.13 
 
 1.10 
 1.10 
 1.39 
 1.80 
 1.34 
 
 1.34 
 1.30 
 2.19 
 
 1.78 
 1.47 
 
 1.39 
 
 1.32 
 1.87 
 2.01 
 2.29 
 
 2.20 
 1.98 
 1.90 
 1.94 
 1.82 
 
 2.24 
 2.18 
 2.01 
 1.96 
 
 2.03 
 2.14 
 2.10 
 1.97 
 1.92 
 
 1.91 
 1.9& 
 1.96 
 2.04 
 2.12 
 
 2.48 
 2.15 
 2.50 
 2.13 
 1.94 
 
 1.90 
 1.95 
 1.98 
 1.97 
 1.96 
 
 1.89 
 1.82 
 1.80 
 
 1.78 
 1.78 
 
 1.89 
 1.80 
 1.74 
 1.63 
 1.90 
 1.88 
 
 2.00 
 1.88 
 2.10 
 3.00 
 2.48 
 
 2.04 
 2.10 
 2.56 
 2.15 
 2.19 
 
 1.98 
 2.10 
 2.02 
 2.11 
 2.06 
 
 2.06 
 2.00 
 -1.93 
 1.91 
 2.09 
 
 1.92 
 1.92 
 1.89 
 1.90 
 1.96 
 
 1.99 
 1.96 
 1.90 
 1.84 
 1.80 
 
 1.72 
 1.76 
 1.89 
 1.94 
 1.95 
 
 1.94 
 1.84 
 1.96 
 1.80 
 1.72 
 
 1.68 
 1.66 
 1.60 
 1.60 
 1.56 
 
 1.52 
 1.50 
 1.49 
 1.53 
 1.70 
 
 1.55 
 1.43 
 1.40 
 1.54 
 1.40 
 
 1.80 
 2.12 
 1.86 
 1.91 
 1.80 
 1.64 
 
 1.56 
 1.52 
 1.50 
 1.44 
 1.40 
 
 1.40 
 1.40 
 1.62 
 1.52 
 1.94 
 
 1.86 
 1.76 
 1.82 
 1.73 
 1.79 
 
 1.78 
 1.72 
 1.67 
 1.59 
 1.76 
 
 1.70 
 1.84 
 1.72 
 1.63 
 1.96 
 
 1.72 
 1.65 
 1.75 
 1.66 
 1.54 
 
 1.60 
 1.70 
 
 1.82 
 1.92 
 1.84 
 
 1,72 
 1.66 
 1.76 
 2.00 
 1.83 
 
 1.96 
 1.79 
 1.86 
 1.90 
 1.78 
 
 1.70 
 1.66 
 1.61 
 1.58 
 1.56 
 
 1.49 
 1.51 
 1.50 
 1.88 
 1.74 
 
 1.63 
 1.67 
 1.68 
 1.64 
 1.62 
 1.53 
 
 1.50 
 1.48 
 1.49 
 1.45 
 1.41 
 
 1.40 
 1.41 
 1.40 
 
 1.78 
 1.74 
 
 1.91 
 1.84 
 1.80 
 1.86 
 2.14 
 
 1.85 
 1.74 
 1.65 
 1.74 
 1.60 
 
 1.58 
 1.90 
 1.68 
 1.56 
 1.51 
 
 1.57 
 1.60 
 1.51 
 1.80 
 1.69 
 1.74 
 
 1.70 
 2.12 
 1.93 
 2.02 
 1.85 
 
 1.88 
 2.02 
 1.84 
 1.76 
 1.70 
 
 1.64 
 1.60 
 1.56 
 1.52 
 1.50 
 
 1.44 
 1.44 
 1.40 
 1.40 
 1.42 
 
 1.38 
 1.36 
 1.34 
 1.40 
 1.34 
 
 1.33 
 1.32 
 1.30 
 1.35 
 2.02 
 
 1.60 
 1.72 
 1.64 
 1.44 
 1.40 
 
 1.36 
 1.39 
 1.38 
 1.44 
 1.42 
 
 1.36 
 1.68 
 1.62 
 2.22 
 2.11 
 
 1.68 
 1.28 
 1.52 
 1.48 
 1.54 
 
 2.36 
 2.11 
 2.02 
 1.94 
 1.86 
 
 1.85 
 3.00 
 2.34 
 1.98 
 2.03 
 1.98 
 
 1.96 
 1.90 
 2.06 
 
 1.88 
 1.80 
 
 1.73 
 1.66 
 1.62 
 
 2.78 
 1.92 
 
 2.02 
 1.85 
 1.78 
 1.77 
 1.71 
 
 2.44 
 2.19 
 2.46 
 2.04 
 1.97 
 
 1.92 
 1.91 
 1.94 
 1.94 
 1.88 
 
 1.88 
 1.82 
 1.78 
 1.72 
 1.75 
 
 1.82 
 
 2 
 
 2.26 
 
 3 
 
 1.75 
 
 4 
 
 1.62 
 
 5 
 
 1.61 
 
 6 
 
 1.64 
 
 7 
 
 1.54 
 
 8 
 
 1.40 
 
 9 
 
 1.34 
 
 10 
 
 1.29 
 
 11 
 
 1.64 
 
 12 
 
 1.60 
 
 13 
 
 1.48 
 
 14. 
 
 1.60 
 
 15 
 
 1.58 
 
 16 
 
 1.70 
 
 17 
 
 1.66 
 
 18 
 
 2.30 
 
 19 
 
 2.16 
 
 20 
 
 1.82 
 
 21 
 
 2.29 
 
 22 
 
 2.22 
 
 23 
 
 2.21 
 
 24 
 
 1.93 
 
 25 
 
 1.90 
 
 26 
 
 2.04 
 
 27 
 
 1.92 
 
 28 
 
 1.96 
 
 29 
 
 1.92 
 
 30 
 
 1.90 
 
 31 
 
 1.86 
 
 
 
 Daily discharge, in second-feet, of Alo Stream near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 3.2 
 
 0.4 
 
 10.2 
 
 9.0 
 
 3.2 
 
 1.8 
 
 2.0 
 
 1.5 
 
 3.0 
 
 2.0 
 
 7.8 
 
 4.8 
 
 .4 
 
 15.4 
 
 5.6 
 
 3.6 
 
 1.6 
 
 3.0 
 
 1.4 
 
 14.2 
 
 3.2 
 
 6.0 
 
 3.0 
 
 .3 
 
 13.0 
 
 13.0 
 
 5.8 
 
 1.5 
 
 4.4 
 
 1.4 
 
 6.9 
 
 2.4 
 
 11.4 
 
 2.4 
 
 .3 
 
 8.1 
 
 81.0 
 
 7.2 
 
 1.2 
 
 6.6 
 
 1.2 
 
 9.8 
 
 1.2 
 
 5.6 
 
 2.0 
 
 .3 
 
 6.6 
 
 37.6 
 
 7.5 
 
 1.0 
 
 4.8 
 
 1.1 
 
 5.0 
 
 1.0 
 
 4.0 
 
 1.9 
 
 .2 
 
 6.3 
 
 10.6 
 
 7.2 
 
 1.0 
 
 3.2 
 
 1.0 
 
 5.6 
 
 .9 
 
 3.3 
 
 1.7 
 
 .2 
 
 7.8 
 
 13.0 
 
 4.8 
 
 1.0 
 
 2.6 
 
 1.1 
 
 9.8 
 
 1.0 
 
 2.6 
 
 1.8 
 
 1.0 
 
 7.8 
 
 43.8 
 
 7.8 
 
 2.2 
 
 3.6 
 
 1.0 
 
 4.8 
 
 .9 
 
 2.2 
 
 2.0 
 
 4.0 
 
 10.6 
 
 16.0 
 
 4.0 
 
 1.6 
 
 9.0 
 
 3.8 
 
 3.6 
 
 1.2 
 
 61.4 
 
 1.6 
 
 .8 
 
 14.2 
 
 18.4 
 
 3.2 
 
 7.2 
 
 4.6 
 
 3.4 
 
 3.0 
 
 1.1 
 
 6.6 J 
 
 Dec. 
 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 
 8 
 
 9 
 
 10 
 
 4.4 
 22.6 
 3.5 
 2.2 
 2.1 
 
 2.4 
 
 1.7 
 1.0 
 
 .8 
 
 .7 
 
ISLAND OF MAUI. 169 
 
 Daily discharge, in second-feet, of Alo Stream near Huelo, Maui, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 11 
 
 1.3 
 1.2 
 1.0 
 1.0 
 .9 
 
 .9 
 
 .8 
 .8 
 .7 
 .7 
 
 .7 
 
 .6 
 
 .6 
 
 1.0 
 
 .8 
 
 .6 
 .5 
 .4 
 .4 
 .4 
 .5 
 
 0.8 
 .7 
 18.4 
 3.8 
 1.4 
 
 1.0 
 
 .8 
 
 5.4 
 
 9.4 
 
 24.4 
 
 19.0 
 
 8.4 
 6.0 
 7.2 
 4.4 
 
 21.4 
 
 17.8 
 9.4 
 
 7.8 
 
 37.6 
 16.0 
 39.0 
 14.8 
 7.2 
 
 6.0 
 7.5 
 8.4 
 8.1 
 
 7.8 
 
 5.8 
 4.4 
 4.0 
 3.8 
 3.8 
 
 5.8 
 4.0 
 3.4 
 2.3 
 6.0 
 5.6 
 
 8.4 
 13.0 
 
 9.8 
 13.6 
 11.4 
 
 11.4 
 9.0 
 6.9 
 6.3 
 
 12.6 
 
 6.6 
 6.6 
 5.8 
 6.0 
 
 7.8 
 
 8.7 
 7.8 
 6.0 
 4.8 
 4.0 
 
 2.8 
 2.6 
 2.0 
 
 2.0 
 
 1.8 
 
 1.6 
 1.5 
 1.4 
 1.6 
 3.0 
 
 1.8 
 1.2 
 1.0 
 1.7 
 1.0 
 
 4.0 
 14.2 
 5.2 
 6.3 
 4.0 
 2.4 
 
 5.2 
 3.6 
 4.4 
 3.3 
 3.9 
 
 3.8 
 3.2 
 2.7 
 2.0 
 3.6 
 
 3.0 
 4.8 
 3.2 
 2.3 
 
 7.8 
 
 3.2 
 2.5 
 3.5 
 2.6 
 
 1.7 
 
 7.8 
 3.9 
 5.2 
 6.0 
 3.8 
 
 3.0 
 2.6 
 2.1 
 1.9 
 1.8 
 
 1.4 
 1.6 
 1.5 
 5.6 
 3.4 
 
 2.3 
 2.7 
 2.8 
 3.4 
 2.2 
 1.6 
 
 6.3 
 4.8 
 4.0 
 5.2 
 15.4 
 
 5.0 
 3.4 
 2.5 
 3.4 
 2.0 
 
 1.9 
 6.0 
 2.8 
 1.8 
 1.6 
 
 1.8 
 2.0 
 1.6 
 4.0 
 2.9 
 3.4 
 
 2.4 
 2.0 
 1.8 
 1.6 
 1.5 
 
 1.2 
 1.2 
 1.0 
 1.0 
 1.1 
 
 .9 
 .9 
 .8 
 1.0 
 .8 
 
 .8 
 .8 
 .7 
 .8 
 9.8 
 
 0.9 
 2.8 
 2.2 
 20.2 
 13.6 
 
 2.8 
 .6 
 1.6 
 1.4 
 1.7 
 
 29.2 
 
 13.6 
 
 9.8 
 
 7.2 
 
 5.2 
 
 5.0 
 81.0 
 
 27.8 
 8.4 
 
 10.2 
 8.4 
 
 9.8 
 5.0 
 3.8 
 3.7 
 3.1 
 
 34.8 
 18.4 
 36.2 
 10.6 
 8.1 
 
 6.6 
 6.3 
 
 7.2 
 7.2 
 5.6 
 
 5.6 
 4.4 
 3.8 
 3.2 
 3.5 
 
 2.4 
 
 12 
 
 2.0 
 
 13 
 
 1.4 
 
 14 
 
 2.0 
 
 15 
 
 1.9 
 
 16 
 
 3.0 
 
 17 
 
 2.6 
 
 18 
 
 25.0 
 
 19 
 
 16.6 
 
 20 
 
 4.4 
 
 21 
 
 24.4 
 
 22 
 
 20.2 
 
 23 
 
 19.6 
 
 
 6.9 
 
 25 
 
 6.0 
 
 26 
 
 10.6 
 
 
 6.6 
 
 28 
 
 7.8 
 
 
 6.6 
 
 30 
 
 6.0 
 
 
 5.2 
 
 
 
 Monthly discharge of Alo Stream near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 Minimum. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 Novermber 
 
 December 
 
 The year 
 
 4.8 
 24.4 
 39.0 
 81.0 
 14.2 
 7.8 
 9.0 
 15.4 
 14.2 
 81.0 
 61.4 
 25.0 
 
 81.0 
 
 0.4 
 
 .2 
 
 2.3 
 
 4.0 
 
 1.0 
 
 1.0 
 
 1.4 
 
 1.0 
 
 .7 
 
 .6 
 
 2.2 
 
 .7 
 
 1.30 
 6.05 
 9.72 
 13.80 
 3.79 
 3.01 
 3.56 
 3.18 
 3.26 
 8.66 
 9.93 
 7.21 
 
 79.9 
 348.0 
 598.0 
 821.0 
 233.0 
 179.0 
 219.0 
 196.0 
 194.0 
 532.0 
 591.0 
 443.0 
 
 4,430.0 
 
 WAIKAMOI STREAM NEAR HUELO, MAUI. 
 
 Location. — About 4£ miles by trail southeast of Huelo and about 500 feet above 
 junction of stream and Spreckels ditch; about 50 feet above trail bridge. 
 
 Records available. — December 16, 1910, to December 31, 1912. 
 
 Gage. — Inclined staff; read twice daily, at 5.15 a. m. and about 5 p. m.; datum 
 unchanged. 
 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made by wading. 
 
 Accuracy. — Good . 
 
 Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 
 
 Discharge measurements of Waihamoi Stream near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 22 
 
 J. B. Stewart 
 
 Feet. 
 1.27 
 1.60 
 
 Sec-feet. 
 1.48 
 
 Nov. 8 
 
 do 
 
 5.43 
 
 
 
 
170 WATEE EESOUECES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Waikamoi Stream near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 1.62 
 
 1.09 
 
 2.16 
 
 2.36 
 
 1.64 
 
 1.48 
 
 1.54 
 
 1.41 
 
 1.54 
 
 1.50 
 
 1.95 
 
 1.62 
 
 1.03 
 
 2.46 
 
 2.04 
 
 1.72 
 
 1.47 
 
 1.62 
 
 1.38 
 
 2.48 
 
 1.75 
 
 1.82 
 
 1.60 
 
 1.02 
 
 2.46 
 
 2.18 
 
 1.82 
 
 1.46 
 
 1.79 
 
 1.40 
 
 1.87 
 
 1.68 
 
 2.00 
 
 1.56 
 
 1.10 
 
 2.11 
 
 3.08 
 
 1.66 
 
 1.42 
 
 1.96 
 
 1.37 
 
 1.82 
 
 1.50 
 
 1.74 
 
 1.52 
 
 1.06 
 
 1.99 
 
 3.16 
 
 1.84 
 
 1.40 
 
 1.57 
 
 1.32 
 
 1.66 
 
 1.42 
 
 1.69 
 
 1.50 
 
 .99 
 
 1.96 
 
 2.26 
 
 1.78 
 
 1.36 
 
 1.64 
 
 1.28 
 
 1.70 
 
 1.37 
 
 1.58 
 
 1.48 
 
 .95 
 
 2.22 
 
 2.64 
 
 1.71 
 
 1.36 
 
 1.58 
 
 1.32 
 
 2.34 
 
 1.38 
 
 1.58 
 
 1.52 
 
 1.08 
 
 2.04 
 
 2.92 
 
 1.78 
 
 1.52 
 
 1.60 
 
 1.29 
 
 1.72 
 
 1.36 
 
 1.57 
 
 1.54 
 
 1.37 
 
 2.00 
 
 2.39 
 
 1.68 
 
 1.46 
 
 1.94 
 
 1.60 
 
 1 62 
 
 1.37 
 
 3.69 
 
 1.49 
 
 1.30 
 
 2.22 
 
 2.24 
 
 1.61 
 
 1.84 
 
 1.74 
 
 1.54 
 
 1.56 
 
 1.44 
 
 2.18 
 
 1.46 
 
 1.29 
 
 2.82 
 
 2.00 
 
 1.54 
 
 1.74 
 
 1.78 
 
 1.80 
 
 1.53 
 
 1.36 
 
 2.09 
 
 lr44 
 
 1.28 
 
 2.56 
 
 2.57 
 
 1.51 
 
 1.67 
 
 1.64 
 
 1.73 
 
 1.50 
 
 1.52 
 
 1 84 
 
 1.42 
 
 1.78 
 
 2.46 
 
 1.95 
 
 1.50 
 
 1.74 
 
 1.78 
 
 1.59 
 
 1.48 
 
 1.58 
 
 1.72 
 
 1.40 
 
 1.76 
 
 2.10 
 
 2.18 
 
 1.54 
 
 1.64 
 
 1.79 
 
 1.81 
 
 1.46 
 
 2.42 
 
 1.68 
 
 1.38 
 
 1.44 
 
 1.93 
 
 2.10 
 
 1.52 
 
 1.64 
 
 1.67 
 
 2.28 
 
 1.43 
 
 1.75 
 
 1.63 
 
 1.36 
 
 1.28 
 
 1.78 
 
 2.06 
 
 1.49 
 
 1.74 
 
 1.60 
 
 1.74 
 
 1.40 
 
 1.66 
 
 2.74 
 
 1.34 
 
 1.20 
 
 1.82 
 
 2.06 
 
 1.48 
 
 1.60 
 
 1.56 
 
 1.60 
 
 1.40 
 
 1.53 
 
 2.60 
 
 1.32 
 
 1.18 
 
 2.14 
 
 1.93 
 
 1.46 
 
 1.52 
 
 1.53 
 
 1.53 
 
 1.36 
 
 1.49 
 
 2.66 
 
 1.31 
 
 1.60 
 
 1.88 
 
 1.86 
 
 1.50 
 
 1.64 
 
 1.50 
 
 1.56 
 
 1.32 
 
 1.47 
 
 2.60 
 
 1.30 
 
 2.88 
 
 1.89 
 
 2.21 
 
 1.58 
 
 1.56 
 
 1.48 
 
 1.51 
 
 1.34 
 
 1.50 
 
 1.99 
 
 1.28 
 
 3.40 
 
 1.78 
 
 1.94 
 
 1.50 
 
 1.58 
 
 1.49 
 
 1.48 
 
 1.31 
 
 2.24 
 
 2.00 
 
 1.28 
 
 2.38 
 
 1.70 
 
 1.83 
 
 1.43 
 
 1.57 
 
 1.46 
 
 1.72 
 
 1.26 
 
 2.41 
 
 1.98 
 
 1.24 
 
 1.95 
 
 1.66 
 
 1.79 
 
 1.40 
 
 1.54 
 
 1.42 
 
 1.58 
 
 1.24 
 
 2.16 
 
 1.90 
 
 1.40 
 
 1.74 
 
 1.66 
 
 1.78 
 
 1.48 
 
 1.74 
 
 1.68 
 
 1.50 
 
 1.22 
 
 1.92 
 
 1.77 
 
 1.47 
 
 1.77 
 
 1.68 
 
 1.85 
 
 1.41 
 
 1.63 
 
 1.61 
 
 1.46 
 
 1.18 
 
 1.74 
 
 1.79 
 
 1.26 
 
 1.64 
 
 2.26 
 
 1.89 
 
 1.70 
 
 1.53 
 
 1.54 
 
 1.46 
 
 1.16 
 
 1.76 
 
 1.84 
 
 1.22 
 
 3.30 
 
 1.81 
 
 1.86 
 
 2.00 
 
 1.66 
 
 1.58 
 
 1.46 
 
 1.13 
 
 2.84 
 
 1.72 
 
 1.19 
 
 2.50 
 
 1.68 
 
 1.78 
 
 1.62 
 
 1.58 
 
 1.54 
 
 1.43 
 
 1.08 
 
 2.18 
 
 1.69 
 
 1.16 
 
 2.16 
 
 1.62 
 
 1.72 
 
 1.68 
 
 1.51 
 
 1.56 
 
 1.65 
 
 1.14 
 
 1.91 
 
 1.63 
 
 1.12 
 
 
 2.80 
 
 1.68 
 
 1.56 
 
 1.48 
 
 1.50 
 
 1.55 
 
 2.01 
 
 2.03 
 
 1.66 
 
 1.11 
 
 
 2.86 
 
 
 1.52 
 
 
 1.46 
 
 1.54 
 
 
 1.99 
 
 
 Daily discharge, in second-feet, of Waikamoi Stream near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 6.4 
 6.4 
 6.0 
 5.2 
 4.4 
 
 4.0 
 3.8 
 4.4 
 4.8 
 3.9 
 
 3.6 
 3.4 
 3.2 
 3.0 
 2.8 
 
 2.6 
 2.4 
 2.2 
 2.1 
 2.0 
 
 1.8 
 1.8 
 1.4 
 3.0 
 3.7 
 
 1.6 
 1.2 
 1.0 
 
 .8 
 .6 
 .6 
 
 0.5 
 .5 
 .5 
 .5 
 .5 
 
 .5 
 .5 
 .5 
 
 2.7 
 2.0 
 
 1.9 
 1.8 
 9.6 
 9.2 
 3.4 
 
 1.8 
 
 1.0 
 
 .9 
 
 6.0 
 
 48.0 
 
 74.0 
 27.4 
 14.5 
 8.8 
 9.4 
 
 6.8 
 
 32! 
 
 20.8 
 
 20.8 
 30.4 
 30.4 
 19.3 
 15.7 
 
 14.8 
 22.6 
 17.2 
 16.0 
 22.6 
 
 45.0 
 34.4 
 30.4 
 19.0 
 13.9 
 
 9.6 
 10.6 
 20.2 
 12.4 
 12.7 
 
 9.6 
 8.0 
 7.2 
 7.2 
 
 7.6 
 
 23.8 
 10.3 
 7.6 
 6.4 
 44.0 
 47.0 
 
 26.8 
 17.2 
 21.4 
 58.0 
 62.0 
 
 23.8 
 37.6 
 50.0 
 27.7 
 23.2 
 
 16.0 
 34.8 
 14.5 
 21.4 
 19.0 
 
 17.8 
 17.8 
 13.9 
 11.8 
 22.3 
 
 14.2 
 10.9 
 9.8 
 9.6 
 11.5 
 
 12.7 
 11.8 
 9.6 
 8.4 
 7.6 
 
 6.8 
 8.4 
 
 10.6 
 7.2 
 
 11.2 
 
 9.6 
 8.2 
 9.6 
 7.6 
 6.2 
 
 4.8 
 4.2 
 4.0 
 4.8 
 4.4 
 
 3.9 
 3.8 
 3.6 
 4.0 
 5.6 
 
 4.0 
 3.3 
 3.0 
 3.8 
 3.1 
 
 8.0 
 16.0 
 6.4 
 7.6 
 5.2 
 4.4 
 
 3.8 
 3.7 
 3.6 
 3.2 
 3.0 
 
 2.6 
 2.6 
 4.4 
 3.6 
 11.2 
 
 8.8 
 7.4 
 8.8 
 6.8 
 6.8 
 
 8.8 
 6.0 
 4.4 
 6.8 
 5.2 
 
 5.6 
 5.4 
 4.8 
 8.8 
 6.6 
 
 4.6 
 7.2 
 5.6 
 4.2 
 3.8 
 
 4.8 
 6.4 
 9.8 
 14.8 
 5.4 
 
 6.8 
 5.6 
 6.0 
 14.2 
 
 8.8 
 
 9.6 
 6.8 
 9.6 
 9.8 
 7.4 
 
 6.0 
 5.2 
 4.6 
 4.0 
 3.8 
 
 3.9 
 3.6 
 3.2 
 
 7.6 
 6.2 
 
 4.8 
 5.6 
 4.8 
 5.2 
 4.0 
 3.6 
 
 3.1 
 2.8 
 3.0 
 2:7 
 2.2 
 
 1.8 
 2.2 
 1.9 
 6.0 
 
 4.8 
 
 10.0 
 8.6 
 ' 5.8 
 10.3 
 24.4 
 
 8.8 
 6.0 
 4.6 
 5.2 
 4.2 
 
 3.8 
 8.4 
 5.6 
 4.0 
 3.6 
 
 3.6 
 3.6 
 3.3 
 7.0 
 5.0 
 4.8 
 
 4.8 
 31.2 
 12.1 
 10.6 
 
 7.2 
 
 8.0 
 26.2 
 8.4 
 6.4 
 5.2 
 
 4.6 
 4.0 
 3.8 
 3.6 
 3.3 
 
 3.0 
 3.0 
 2.6 
 2.2 
 2.4 
 
 2.1 
 1.6 
 1.4 
 1.2 
 .9 
 
 .8 
 .6 
 .5 
 .7 
 16.3 
 
 4.0 
 9.0 
 7.6 
 4.0 
 3.2 
 
 2.7 
 2.8 
 2.6 
 2.7 
 3.4 
 
 2.6 
 4.4 
 5.6 
 28.8 
 9.0 
 
 7.2 
 4.6 
 3.9 
 3.7 
 4.0 
 
 23.2 
 
 28.4 
 20.8 
 13.6 
 8.8 
 
 9.2 
 46.0 
 21.4 
 13.3 
 16.9 
 15.7 
 
 14.5 
 10.6 
 16.0 
 8.8 
 
 7.8 
 
 5.6 
 5.6 
 5.4 
 
 88.5 
 21.4 
 
 18.7 
 11.2 
 8.4 
 7.6 
 6.6 
 
 41.6 
 36.0 
 38.4 
 36.0 
 15.7 
 
 16.0 
 15.4 
 13.0 
 9.4 
 9.8 
 
 11.2 
 
 8.4 
 7.8 
 6.6 
 7.2 
 
 20.2 
 
 2 
 
 24.4 
 
 3 
 
 65.0 
 
 4 
 
 12.7 
 
 5 
 
 10.6 
 
 6 
 
 10.0 
 
 7 
 
 9.2 
 
 8 
 
 9.2 
 
 9 
 
 8.8 
 
 10 
 
 8.2 
 
 11 
 
 6.4 
 
 12 > 
 
 6.4 
 
 13 
 
 6.0 
 
 14 
 
 6.4 
 
 15 
 
 6.0 
 
 16 
 
 7.2 
 
 17 
 
 6.2 
 
 18 
 
 7.2 
 
 19 
 
 12.4 
 
 20 
 
 8.8 
 
 21 
 
 31.2 
 
 22 
 
 18.4 
 
 23 
 
 22.9 
 
 24 
 
 12.4 
 
 25 
 
 11.2 
 
 26 
 
 20.2 
 
 27 
 
 16.0 
 
 28 
 
 11.8 
 
 29 
 
 9.8 
 
 30 
 
 9.6 
 
 31 
 
 8.8 
 
 
 
ISLAND OF MAUI. 171 
 
 Monthly discharge of Waikamoi Stream near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March.. 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 74.0 
 47.0 
 62.0 
 16.0 
 11.2 
 14.8 
 24.4 
 31.2 
 46.0 
 88.5 
 65.0 
 
 0.6 
 .5 
 6.4 
 7.6 
 3.0 
 2.6 
 3.2 
 1.8 
 .5 
 2.6 
 5.4 
 6.0 
 
 3.04 
 12.20 
 19.20 
 21.40 
 6.24 
 5.60 
 6.51 
 5.52 
 5.96 
 10.70 
 17.00 
 13.70 
 
 187 
 
 702 
 
 1,180 
 
 1,270 
 
 384 
 
 333 
 
 400 
 
 339 
 
 355 
 
 658 
 
 1,010 
 
 842 
 
 88.5 
 
 .5 
 
 10.1 
 
 7,« 
 
 OOPUOLA STREAM NEAR HUELO, MAUI. 
 
 Location. — About 2 miles by trail southeast of Huelo, and about 400 feet above 
 
 Spreckels ditch crossing. 
 Records available. — December 16, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, at no regular hour; datum unchanged. 
 Channel.— Shifting. 
 
 Discharge measurements. — Made by wading. 
 Accuracy. — Fair. 
 
 The following discharge measurement was made by J. B. Stewart: 
 September 22, 1912: Gage height, 0.88 foot; discharge, 0.46 second-foot. 
 
 Daily gage height, in feet, of Oopuola Stream near Huelo, Maui, for 1912. 
 [John Pachero, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov 
 
 Dec. 
 
 1 
 
 
 1.00 
 1.00 
 .95 
 
 "".'90' 
 
 .89 
 .89 
 .88 
 1.20 
 1.02 
 
 1.20 
 1.20 
 2.30 
 2.25 
 1.13 
 
 1.12 
 1.11 
 
 "i.'40" 
 3.30 
 
 2.40 
 2.09 
 1.70 
 1.30 
 
 1.30 
 3.00 
 1.90 
 1.68 
 
 1.55 
 2.20 
 
 "i.*50' 
 1.49 
 
 1.43 
 1.50 
 1.40 
 1.45 
 
 2.00 
 1.90 
 1.88 
 1.70 
 1.42 
 
 1.38 
 
 1.50 
 1.62 
 1.70 
 2.70 
 1.50 
 
 1.42 
 
 "iVn 
 
 1.48 
 1.47 
 
 1.46 
 1.70 
 1.54 
 
 "2*60" 
 
 1.98 
 
 1.12 
 1.14 
 1.11 
 1.62 
 
 1.36 
 1.28 
 
 1.10 
 
 "i.'os" 
 
 1.02 
 1.01 
 
 1.00 
 1.02 
 1.20 
 
 1.09 
 1.15 
 1.14 
 
 0.98 
 .97 
 1.00 
 
 "i. : 70* 
 1.25 
 1.80 
 1.25 
 
 1.12 
 1.52 
 
 ""L'62" 
 1.01 
 
 1.00 
 .99 
 .95 
 .94 
 
 .94 
 .91 
 .90 
 .90 
 .90 
 
 .90 
 
 "*.'82" 
 .82 
 .80 
 
 .82 
 .79 
 .79 
 1.40 
 
 1.35 
 
 1.82 
 1.40 
 .92 
 .91 
 
 "".'96* 
 .93 
 1.00 
 1.00 
 
 .91 
 1.20 
 
 "i.56" 
 1.52 
 
 1.00 
 1.00 
 1.00 
 .99 
 
 1.50 
 2.80 
 2.20 
 1.50 
 1.45 
 
 1.20 
 
 "i'io" 
 1.45 
 
 1.60 
 1.50 
 
 1.45 
 1.30 
 
 *i.3i' 
 
 1.30 
 1.10 
 1.08 
 2.51 
 
 1.50 
 1.40 
 1.20 
 1.17 
 1.07 
 
 2.60 
 
 "2.'i6" 
 1.12 
 1.10 
 
 1.20 
 1.30 
 1.00 
 
 """."36" 
 
 1.85 
 1.20 
 1.80 
 1.70 
 1.10 
 
 
 2 
 
 
 3 10 
 
 3 
 
 1.22 
 1.20 
 1.20 
 
 1.22 
 
 2 40 
 
 4 
 
 1.80 
 
 5 
 
 "i.62" 
 
 2.05 
 1.16 
 
 1.14 
 1.12 
 1.12 
 
 "i.'ii' 
 1.10 
 
 1.09 
 1.08 
 1.04 
 1.02 
 
 "i."03" 
 1.02 
 1.31 
 1.30 
 
 1.03 
 1.02 
 
 "i.'i2* 
 
 1.10 
 .99 
 
 .97 
 
 .92 
 .98 
 .92 
 1.40 
 1.35 
 
 '"i."30* 
 1.40 
 1.32 
 1.48 
 
 1.35 
 1.26 
 
 '"i.'20" 
 1.02 
 
 1.00 
 1.20 
 1.14 
 1.08 
 
 .97 
 .98 
 .97 
 1.02 
 1.00 
 1.02 
 
 1.60 
 
 6 
 
 1 50 
 
 7 
 
 1 55 
 
 8 
 
 
 
 9 
 
 1.21 
 1.12 
 
 1.11 
 1.10 
 1.07 
 
 1 30 
 
 10 
 
 1.15 
 
 1.10 
 
 "i.'02" 
 1.00 
 1.00 
 
 .92 
 .92 
 .91 
 
 "l."i3~ 
 
 1.10 
 
 .90 
 .90 
 1.15 
 1.00 
 
 "i."42" 
 1.62 
 1.51 
 1.22 
 1.20 
 
 2.20 
 
 1.80 
 1.72 
 1.32 
 1.30 
 1.28 
 
 *"i."22' 
 1.10 
 1.08 
 1.08 
 
 1.20 
 1.09 
 
 "i.32" 
 
 1.22 
 
 1.10 
 1.08 
 1.10 
 1.01 
 
 1.28 
 
 11 
 
 1.20 
 
 12 
 
 1.18 
 
 13 
 
 1.10 
 
 14 
 
 1 11 
 
 15 
 
 1.04 
 
 1.02 
 1.01 
 1.00 
 1.00 
 1.00 
 
 1 40 
 
 16 
 
 
 17 .. 
 
 1 30 
 
 18 
 
 2.10 
 1.50 
 1.45 
 
 1.42 
 
 1.38 
 1.22 
 
 "i.30* 
 
 1.34 
 
 "i.'io" 
 
 1.09 
 1.52 
 
 "Lio" 
 
 1.50 
 
 "i.*32" 
 
 1.30 
 1.29 
 1.50 
 
 1.62 
 
 1.50 
 
 "i.32" 
 
 1.45 
 
 19 
 
 2.00 
 
 20 
 
 1.52 
 
 21 
 
 2.10 
 
 22 
 
 1.00 
 .99 
 1.13 
 1.12 
 
 1.00 
 1.00 
 
 
 23 
 
 1.72 
 
 24 
 
 1.61 
 
 25 
 
 
 26 
 
 1.11 
 
 27 
 
 1 09 
 
 28 
 
 2.01 
 
 29 
 
 .95 
 .94 
 1.12 
 
 
 30 
 
 1 23 
 
 31 
 
 1.20 
 
 
 
 
 
 
172 
 
 Daily discharge, in second-feet, of Oopuola Stream near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2.0 
 2.0 
 2.0 
 1.8 
 1.8 
 
 2.0 
 2.0 
 1.9 
 1.9 
 1.3 
 
 1.3 
 1.2 
 1.1 
 1.1 
 1.0 
 
 1.0 
 .9 
 .9 
 .9 
 .9 
 
 .9 
 
 .9 
 
 .9 
 
 1.4 
 
 1.3 
 
 .9 
 .9 
 .9 
 .8 
 .8 
 1.3 
 
 0.9 
 .9 
 
 .8 
 .8 
 
 .7 
 
 .7 
 
 .7 
 
 .7 
 
 1.8 
 
 1.0 
 
 1.8 
 
 1.8 
 
 21.0 
 
 19.5 
 
 1.4 
 
 1.3 
 1.3 
 2.4 
 3.6 
 62.0 
 
 24.0 
 15.8 
 8.0 
 2.6 
 2.6 
 
 2.6 
 46.0 
 12.0 
 
 7.7 
 
 5.6 
 18.0 
 11.4 
 4.8 
 4.7 
 
 4.0 
 4.8 
 3.6 
 4.2 
 9.1 
 
 14.0 
 12.0 
 11.6 
 8.0 
 3.8 
 
 3.4 
 9.7 
 16.0 
 4.8 
 4.2 
 
 3.8 
 3.4 
 2.0 
 2.3 
 2.6 
 
 3.0 
 2.1 
 1.2 
 1.2 
 5.1 
 4.9 
 
 4.8 
 6.7 
 8.0 
 34.0 
 4.8 
 
 3.8 
 6.1 
 
 8.4 
 4.6 
 4.4 
 
 4.3 
 8.0 
 5.4 
 9.7 
 14.0 
 
 13.6 
 10.3 
 7.0 
 3.6 
 
 4.8 
 
 3.8 
 2.8 
 2.6 
 2.5 
 
 4.8 
 
 6.7 
 4.8 
 3.8 
 2.8 
 2.0 
 
 1.3 
 1.4 
 1.3 
 6.7 
 4.9 
 
 3.2 
 2.4 
 2.1 
 
 1.8 
 1.5 
 
 1.2 
 
 1.1 
 
 1.0 
 
 .9 
 
 .9 
 
 .7 
 
 .7 
 
 .7 
 
 1.0 
 
 1.4 
 
 1.2 
 
 .7 
 
 .7 
 
 1.5 
 
 .9 
 
 2.4 
 3.8 
 6.7 
 5.0 
 2.0 
 1.8 
 
 1.2 
 1.2 
 1.1 
 1.0 
 .9 
 
 .9 
 
 1.0 
 
 1.8 
 
 9.9 
 
 18.0 
 
 10.0 
 
 8.4 
 2.8 
 2.6 
 2.4 
 
 2.2 
 2.0 
 1.2 
 1.1 
 1.1 
 
 1.8 
 1.2 
 2.0 
 2.8 
 2.0 
 
 1.2 
 1.1 
 1.2 
 .9 
 1.0 
 
 1.2 
 1.5 
 1.4 
 1.4 
 1.3 
 
 1.2 
 1.1 
 1.0 
 15.0 
 1.6 
 
 1.4 
 1.3 
 1.3 
 1.3 
 1.3 
 
 1.2 
 1.2 
 1.1 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 2.7 
 2.6 
 
 1.0 
 1.0 
 1.1 
 1.3 
 1.2 
 .9 
 
 0.9 
 .8 
 .9 
 
 .8 
 .8 
 
 .7 
 
 .8 
 
 .7 
 
 3.6 
 
 3.1 
 
 2.8 
 2.6 
 3.6 
 2.8 
 4.6 
 
 3.1 
 2.3 
 2.0 
 
 1.8 
 1.0 
 
 .9 
 1.8 
 1.4 
 1.1 
 1.0 
 
 .8 
 .8 
 .8 
 
 1.0 
 .9 
 
 1.0 
 
 4.5 
 8.0 
 2.2 
 10.0 
 2.2 
 
 1.3 
 5.1 
 3.0 
 1.0 
 .9 
 
 .9 
 .9 
 
 .8 
 .8 
 .8 
 
 .8 
 .7 
 .7 
 .7 
 .7 
 
 .7 
 .7 
 .6 
 .6 
 .6 
 
 .6 
 
 .6 
 
 .6 
 
 3.6 
 
 3.4 
 
 3.1 
 10.4 
 3.6 
 
 .7 
 .7 
 
 .7 
 .7 
 .8 
 .9 
 .9 
 
 .7 
 1.8 
 3.3 
 4.8 
 5.1 
 
 .9 
 .9 
 .9 
 .9 
 2.9 
 
 4.8 
 38.0 
 18.0 
 4.8 
 4.2 
 
 1.8 
 8.9 
 16.0 
 
 4.2 
 6.4 
 4.8 
 
 4.2 
 2.6 
 2.6 
 2.7 
 2.6 
 
 2.6 
 
 1.2 
 
 1.1 
 
 27.3 
 
 16.1 
 
 4.8 
 3.6 
 1.8 
 1.6 
 1.1 
 
 30.0 
 
 23.0 
 
 16.0 
 
 1.3 
 
 1.2 
 
 1.8 
 
 2.6 
 
 .9 
 
 .5 
 
 .1 
 
 11.0 
 1.8 
 
 10.0 
 8.0 
 1.2 
 
 26.1 
 
 2 
 
 51.0 
 
 3 
 
 24.0 
 
 4 
 
 10.0 
 
 5 
 
 6.4 
 
 6 
 
 4.8 
 
 7 
 
 5.6 
 
 8 
 
 4.1 
 
 9 
 
 2.6 
 
 10 
 
 2.4 
 
 11 
 
 1.8 
 
 12 
 
 1.7 
 
 13 
 
 1.2 
 
 14 
 
 1.3 
 
 15 
 
 3.6 
 
 16 
 
 3.1 
 
 17 
 
 2.6 
 
 18 
 
 4.2 
 
 19 
 
 14.0 
 
 20 
 
 5.1 
 
 21 
 
 16.0 
 
 22 
 
 12.2 
 
 23 
 
 8.4 
 
 24 
 
 6.6 
 
 25 
 
 4.0 
 
 26 
 
 1.3 
 
 27 
 
 1.2 
 
 28 
 
 14.2 
 
 29 
 
 8.1 
 
 30 
 
 2.0 
 
 31 
 
 1.8 
 
 
 
 Monthly discharge of Oopuola Stream near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 2.0 
 62.0 
 18.0 
 34.0 
 
 6.7 
 18.0 
 15.0 
 
 4.6 
 10.0 
 38.0 
 30.0 
 51.0 
 
 0.8 
 .7 
 
 1.2 
 
 2.0 
 .7 
 .9 
 .9 
 .7 
 .6 
 .7 
 .1 
 
 1.2 
 
 1.29 
 8.50 
 6.11 
 6.76 
 2.03 
 2.87 
 1.73 
 1.65 
 1.93 
 5.05 
 6.18 
 8.11 
 
 79.3 
 
 489.0 
 376.0 
 402.0 
 125.0 
 171.0 
 106.0 
 101.0 
 115.0 
 311.0 
 368.0 
 499.0 
 
 C. 
 
 February 
 
 C. 
 
 March 
 
 C. 
 
 April 
 
 C. 
 
 May 
 
 C. 
 
 June ■. 
 
 C. 
 
 July 
 
 c. 
 
 August 
 
 c. 
 
 September 
 
 c. 
 
 October 
 
 c. 
 
 November 
 
 c. 
 
 December 
 
 c. 
 
 
 
 The year 
 
 62.0 
 
 .1 
 
 4.32 
 
 3,140.0 
 
 
 
 
 SPB.ECKELS DITCH AT STATION NO. 1, NEAR HUELO, MAUI. 
 
 Location. — About 8J miles by trail southeast of Huelo, and about 20 feet above 
 
 bridge which crosses ditch in Ulawina Gulch. 
 Records available. — December 18, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, about 5.30 a. m. and 4.30 p. m.; datum 
 
 unchanged. 
 Channel. — Permanent. 
 
 Discharge measurements. — Made by wading and from log near gage. 
 Accuracy. — Records good. 
 
ISLAND OF MAUI. 173 
 
 Discharge measurements of Spreckels ditch at station No. 1, near JHuelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 23 
 Nov 10 
 
 J. B. Stewart 
 
 Feet. 
 0.20 
 1.50 
 
 Sec.-ft. 
 2.78 
 
 .do 
 
 36.8 
 
 
 
 
 Daily gage height, in feet, of Sjpreckels ditch at station No. 1, near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.50 
 .56 
 .50 
 .44 
 .39 
 
 .35 
 .34 
 .39 
 .41 
 .32 
 
 .28 
 .26 
 .22 
 .20 
 
 .18 
 
 .17 
 .16 
 .14 
 .19 
 .13 
 
 .11 
 
 .10 
 .10 
 .25 
 .22 
 
 .14 
 .10 
 .09 
 .08 
 .06 
 .10 
 
 0.08 
 .05 
 .06 
 .06 
 .04 
 
 .02 
 .02 
 .12 
 .65 
 .19 
 
 .16 
 .12 
 1.32 
 .59 
 .27 
 
 .18 
 
 .16 
 
 .14 
 
 1.32 
 
 1.75 
 
 1.86 
 
 1.82 
 
 1.22 
 
 .84 
 
 .90 
 
 1.28 
 1.76 
 1.70 
 1.52 
 
 1.55 
 1.68 
 1.68 
 1.55 
 
 1.48 
 
 1.38 
 1.60 
 1.35 
 1.52 
 1.50 
 
 1.72 
 1.92 
 1.72 
 1.22 
 1.22 
 
 .89 
 
 .88 
 
 1.52 
 
 1.28 
 
 1.12 
 
 1.02 
 .70 
 .82 
 .73 
 .70 
 
 1.42 
 
 .78 
 
 .69 
 
 .54 
 
 1.69 
 
 1.70 
 
 1.58 
 1.40 
 1.65 
 2.08 
 1.72 
 
 1.10 
 1.72 
 1.48 
 1.32 
 1.59 
 
 1.38 
 1.58 
 1.25 
 1.52 
 1.35 
 
 1.64 
 1.55 
 1.18 
 .96 
 1.38 
 
 1.19 
 
 1.18 
 
 .89 
 
 .85 
 
 1.40 
 
 1.32 
 
 1.32 
 
 .90 
 
 .76 
 
 .76 
 
 0.62 
 .62 
 1.25 
 1.58 
 1.18 
 
 1.09 
 
 .78 
 
 1.32 
 
 .75 
 
 .62 
 
 .56 
 .50 
 .46 
 .46 
 .40 
 
 .40 
 .36 
 .36 
 .39 
 .55 
 
 .43 
 .32 
 .29 
 .36 
 
 .28 
 
 1.00 
 1.31 
 .70 
 .66 
 .46 
 .44 
 
 0.38 
 .39 
 .33 
 .28 
 .26 
 
 .25 
 .29 
 .49 
 .46 
 1.04 
 
 1.04 
 .66 
 .86 
 .62 
 
 .74 
 
 .75 
 .54 
 .46 
 .74 
 .72 
 
 .92 
 .58 
 .49 
 .84 
 .54 
 
 .46 
 .82 
 .54 
 .42 
 .59 
 
 0.47 
 .69 
 .92 
 .95 
 .79 
 
 .61 
 
 .54 
 
 1.04 
 
 1.36 
 
 .80 
 
 .89 
 .65 
 .92 
 1.05 
 .65 
 
 .52 
 .48 
 .49 
 .41 
 .42 
 
 .42 
 .39 
 .35 
 
 .84 
 .67 
 
 .51 
 .50 
 .59 
 .67 
 .46 
 .39 
 
 0.38 
 .36 
 .36 
 .33 
 .29 
 
 .28 
 .29 
 .26 
 .71 
 .64 
 
 1.12 
 .86 
 .80 
 
 1.07 
 
 .88 
 
 .80 
 .59 
 .66 
 .68 
 .49 
 
 .44 
 .68 
 .59 
 .44 
 .39 
 
 .49 
 .46 
 .39 
 
 .74 
 .55 
 .61 
 
 0.51 
 
 1.75 
 
 .80 
 
 1.36 
 
 .74 
 
 .88 
 1.54 
 .75 
 .62 
 .56 
 
 .49 
 .42 
 .39 
 .36 
 .34 
 
 .30 
 .31 
 .28 
 .25 
 .26 
 
 .23 
 .20 
 .20 
 .33 
 .20 
 
 .20 
 .16 
 .13 
 .20 
 1.20 
 
 0.46 
 .99 
 .58 
 .40 
 .34 
 
 .33 
 .34 
 .34 
 
 .49 
 .44 
 
 .46 
 
 .66 
 
 .89 
 
 1.52 
 
 1.20 
 
 .55 
 .42 
 .40 
 .40 
 
 .48 
 
 1.80 
 1.75 
 1.62 
 1.34 
 
 .78 
 
 .96 
 1.95 
 1.64 
 1.00 
 1.42 
 1.38 
 
 1.22 
 .84 
 
 1.34 
 .66 
 .69 
 
 .52 
 
 .48 
 
 .45 
 
 1.98 
 
 1.22 
 
 1.60 
 
 .84 
 
 !58 
 .52 
 
 1.92 
 1.70 
 1.88 
 1.50 
 1.36 
 
 1.24 
 
 .94 
 
 .58 
 
 1.32 
 
 1.60 
 
 .90 
 .64 
 .65 
 .61 
 .65 
 
 1.30 
 
 2 
 
 2.04 
 
 3 
 
 1.46 
 
 4 
 
 1.45 
 
 5 
 
 
 6 
 
 .79 
 
 7 
 
 1.25 
 
 8 
 
 .84 
 
 9 
 
 .75 
 
 10 
 
 .64 
 
 11 
 
 .56 
 
 12 
 
 .52 
 
 13 
 
 .46 
 
 14 
 
 .53 
 
 15 
 
 .5 
 
 16 
 
 .54 
 
 17 
 
 .48 
 
 18 
 
 1.30 
 
 19 
 
 1.68 
 
 20 
 
 1.02 
 
 21 
 
 1.66 
 
 22 
 
 1.85 
 
 23 
 
 1.38 
 
 24 
 
 1.36 
 
 25 
 
 1.04 
 
 26 
 
 1.25 
 
 27 
 
 1.32 
 
 28 
 
 1.22 
 
 29 
 
 1.35 
 
 30 
 
 .75 
 
 31 
 
 .70 
 
 
 
 Daily discharge, in second-feet, of Sjpreckels ditch at station No. 1, near Huelo, Maui, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 8.0 
 
 1.0 
 
 33.5 
 
 34.4 
 
 10.4 
 
 5.8 
 
 7.5 
 
 5.8 
 
 8.2 
 
 7.3 
 
 24.5 
 
 9.2 
 
 .6 
 
 37.4 
 
 29.0 
 
 10.4 
 
 6.0 
 
 11.8 
 
 5.5 
 
 39.5 
 
 18.8 
 
 15.0 
 
 8.0 
 
 .7 
 
 37.4 
 
 36.5 
 
 25.2 
 
 4.9 
 
 17.0 
 
 5.5 
 
 14.0 
 
 9.6 
 
 27.5 
 
 6.9 
 
 .7 
 
 33.5 
 
 49.4 
 
 34.4 
 
 4.1 
 
 17.8 
 
 4.9 
 
 28.0 
 
 6.2 
 
 11.2 
 
 6.0 
 
 .5 
 
 31.4 
 
 38.6 
 
 23.5 
 
 3.7 
 
 13.8 
 
 4.2 
 
 12.8 
 
 5.1 
 
 11.8 
 
 5.3 
 
 .2 
 
 28.5 
 
 21.5 
 
 21.2 
 
 3.6 
 
 10.2 
 
 4.1 
 
 16.0 
 
 4.9 
 
 8.4 
 
 5.1 
 
 .2 
 
 35.0 
 
 38.6 
 
 13.6 
 
 4.2 
 
 8.8 
 
 4.2 
 
 33.2 
 
 5.1 
 
 7.6 
 
 6.0 
 
 1.5 
 
 27.8 
 
 31.4 
 
 27.0 
 
 7.8 
 
 20.0 
 
 3.7 
 
 13.0 
 
 5.1 
 
 7.1 
 
 6.4 
 
 11.0 
 
 32.6 
 
 27.0 
 
 13.0 
 
 7.3 
 
 25.5 
 
 12.2 
 
 10.4 
 
 7.8 
 
 46.4 
 
 4.8 
 
 2.6 
 
 32.0 
 
 34.7 
 
 10.4 
 
 20.0 
 
 14.0 
 
 10.8 
 
 9.2 
 
 6.9 
 
 24.5 
 
 4.1 
 
 2.1 
 
 38.6 
 
 28.5 
 
 9.2 
 
 20.0 
 
 16.2 
 
 22.0 
 
 7.8 
 
 7.3 
 
 35.0 
 
 3.7 
 
 1.5 
 
 44.6 
 
 34.4 
 
 8.0 
 
 11.2 
 
 11.0 
 
 15.5 
 
 6.6 
 
 11.2 
 
 15.0 
 
 3.0 
 
 27.0 
 
 38.6 
 
 25.2 
 
 7.3 
 
 15.5 
 
 17.0 
 
 14.0 
 
 6.0 
 
 16.2 
 
 11.8 
 
 2.7 
 
 9.8 
 
 24.5 
 
 32.6 
 
 7.3 
 
 10.4 
 
 20.2 
 
 20.8 
 
 5.5 
 
 32.6 
 
 9.6 
 
 2.4 
 
 • 3.9 
 
 24.5 
 
 27.8 
 
 6.2 
 
 12.8 
 
 11.0 
 
 16.0 
 
 5.1 
 
 24.0 
 
 8.4 
 
 2.2 
 
 2.4 
 
 16.2 
 
 36.2 
 
 6.2 
 
 13.0 
 
 8.4 
 
 14.0 
 
 4.4 
 
 9.0 
 
 44.6 
 
 2.1 
 
 2.1 
 
 16.0 
 
 33.5 
 
 5.5 
 
 8.8 
 
 7.6 
 
 9.8 
 
 4.6 
 
 6.6 
 
 38.0 
 
 1.8 
 
 1.8 
 
 32.6 
 
 23.5 
 
 5.5 
 
 7.3 
 
 7.8 
 
 11.2 
 
 4.1 
 
 6.2 
 
 43.4 
 
 2.6 
 
 27.0 
 
 26.0 
 
 18.0 
 
 6.0 
 
 12.8 
 
 6.4 
 
 11.6 
 
 3.6 
 
 6.2 
 
 32.0 
 
 1.6 
 
 39.5 
 
 22.0 
 
 27.0 
 
 9.0 
 
 12.4 
 
 6.6 
 
 7.8 
 
 3.7 
 
 7.6 
 
 28.0 
 
 Dec. 
 
 2. 
 3. 
 4. 
 
 5. 
 
 6, 
 
 7, 
 8, 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 
 17 
 18 
 19 
 20 
 
 26.5 
 48.2 
 30.8 
 30.5 
 22.1 
 
 13.8 
 25.2 
 15.0 
 13.0 
 10.8 
 
 9.2 
 8.4 
 7.3 
 9.6 
 8.6 
 
 8.8 
 7.6 
 26.5 
 37.4 
 19.5 
 
174 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, of Sprechels ditch at station No. 1, near Huelo, Maui, 
 
 for 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 1.4 
 1.2 
 1.2 
 3.6 
 3.0 
 
 1.8 
 1.2 
 1.1 
 1.0 
 .7 
 1.2 
 
 42.8 
 41.6 
 24.5 
 15.0 
 16.5 
 
 26.0 
 39.8 
 38.0 
 32.6 
 
 19.5 
 12.0 
 14.5 
 12.6 
 12.0 
 
 29.6 
 13.6 
 11.8 
 8.8 
 37.7 
 38.0 
 
 23.8 
 23.5 
 16.2 
 15.2 
 29.0 
 
 27.0 
 27.0 
 16.5 
 13.2 
 13.2 
 
 6.7 
 4.8 
 4.2 
 5.5 
 4.1 
 
 19.0 
 26.8 
 12.0 
 11.2 
 7.3 
 6.9 
 
 17.0 
 9.6 
 7.8 
 
 15.0 
 
 8.8 
 
 7.3 
 14.5 
 8.8 
 6.6 
 
 9.8 
 
 6.6 
 6.0 
 5.3 
 15.0 
 11.4 
 
 8.2 
 8.0 
 9.8 
 11.4 
 7.3 
 6.0 
 
 6.9 
 11.6 
 9.8 
 6.9 
 6.0 
 
 7.8 
 7.3 
 6.0 
 
 12.8 
 9.0 
 
 10.2 
 
 3.2 
 2.7 
 2.7 
 4.9 
 2.7 
 
 2.7 
 2.1 
 1.6 
 2.7 
 24.0 
 
 41.0 
 39.5 
 35.6 
 27.5 
 13.6 
 
 18.0 
 45.5 
 36.2 
 19.0 
 29.6 
 28.5 
 
 25.0 
 17.5 
 9.6 
 27.0 
 35.0 
 
 16.5 
 10.8 
 11.0 
 10.2 
 11.0 
 
 36.8 
 
 22 
 
 42.5 
 
 23 
 
 28.5 
 
 24 
 
 28.0 
 
 25 
 
 20.0 
 
 26 
 
 25.2 
 
 27 
 
 27.0 
 
 28 
 
 24.5 
 
 29 
 
 27.8 
 
 30 
 
 13.0 
 
 31 
 
 12.0 
 
 
 
 Monthly discharge of Sprechels ditch at station No. 1, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Runoff 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 9.2 
 42.8 
 44.6 
 49.4 
 34.4 
 20.0 
 25.5 
 22.0 
 39.5 
 45.5 
 46.4 
 48.2 
 
 0.7 
 .2 
 8.8 
 13.2 
 4.1 
 3.6 
 5.3 
 3.7 
 1.6 
 4.9 
 7.1 
 7.3 
 
 3.53 
 14.20 
 26.50 
 27.70 
 11.90 
 
 9.89 
 11.40 
 
 9.61 
 
 9.50 
 17.30 
 20.80 
 21.40 
 
 15.30 
 
 217 
 
 817 
 
 1,1 
 
 1,650 
 
 732 
 
 588 
 
 701 
 
 591 
 
 565 
 
 1,060 
 
 1,240 
 
 1,320 
 
 11,100 
 
 SPRECKELS DITCH AT STATION NO. 2, NEAR HUELO, MAUL 
 
 Location. — About 7J miles by trail southeast of Huelo post office and 100 feet above 
 
 junction of ditch with Kolea Stream No. 2. 
 Records available. — November 6, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, about 4.30 p. m.; datum unchanged. 
 Channel.— Permanent . 
 
 Discharge measurements. — Made from log across ditch near gage. 
 Accuracy. — Records good. 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
 Discharge measurements of Sprechels ditch at station No. 2, near Huelo, Maui, in 1912 . 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 23 
 Nov. 10 
 
 J. B. Stewart. 
 
 Feet. 
 0.69 
 1.85 
 
 Sec.Jt. 
 3.04 
 
 ...do 
 
 36.5 
 
 
 
 
ISLAND OF MAUI. 175 
 
 Daily gage height, in feet, of Sprechels ditch at station No. 2, near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 j 
 
 1.00 
 
 1.28 
 
 .98 
 
 .93 
 
 .90 
 
 .85 
 .83 
 .85 
 .90 
 .83 
 
 .78 
 .75 
 .73 
 .71 
 .71 
 
 .70 
 
 !68 
 .65 
 .63 
 
 .62 
 .60 
 .60 
 .89 
 .70 
 
 .62 
 .60 
 .59 
 
 .58 
 .57 
 .65 
 
 0.59 
 
 .57 
 .58 
 .55 
 .54 
 
 .53 
 
 .52 
 .53 
 .90 
 .67 
 
 .70 
 .62 
 1.25 
 .97 
 .75 
 
 .68 
 
 .70 
 
 .63 
 
 1.52 
 
 1.93 
 
 1.99 
 1.81 
 1.73 
 1.31 
 1.35 
 
 2.00 
 1.90 
 1.88 
 1.92 
 
 1.90 
 1.93 
 1.92 
 1.88 
 1.89 
 
 1.80 
 1.93 
 1.75 
 1.90 
 1.92 
 
 1.98 
 1.93 
 1.88 
 1.90 
 1.65 
 
 1.40 
 1.70 
 1.88 
 1.93 
 1.65 
 
 1.40 
 1.22 
 1.38 
 1.20 
 1.28 
 
 1.73 
 1.28 
 1.19 
 1.05 
 1.93 
 1.90 
 
 1.88 
 1.93 
 1.98 
 2.18 
 1.83 
 
 1.78 
 1.93 
 2.10 
 1.80 
 1.90 
 
 1.93 
 
 1.90 
 1.78 
 1.90 
 1.80 
 
 1.93 
 1.93 
 1.70 
 1.53 
 1.93 
 
 1.68 
 1.88 
 1.50 
 1.30 
 1.90 
 
 1.93 
 
 1.78 
 1.43 
 1.29 
 1.28 
 
 1.13 
 1.15 
 1.90 
 1.92 
 1.73 
 
 1.53 
 1.33 
 1.60 
 1.25 
 1.13 
 
 1.08 
 
 1.02 
 
 .98 
 
 .95 
 
 .90 
 
 .90 
 
 .88 
 .88 
 .88 
 .99 
 
 .89 
 .80 
 .78 
 .88 
 .75 
 
 1.90 
 1.60 
 1.30 
 1.08 
 .95 
 .90 
 
 0.83 
 
 .83 
 .79 
 .78 
 .71 
 
 .70 
 
 .79 
 
 .93 
 
 1.09 
 
 1.95 
 
 1.73 
 1.18 
 1.30 
 1.08 
 1.15 
 
 1.22 
 
 .99 
 
 .90 
 
 1.20 
 
 1.63 
 
 1.70 
 1.03 
 .99 
 1.29 
 1.03 
 
 .93 
 1.05 
 .95 
 .88 
 .81 
 
 0.80 
 1.50 
 1.62 
 1.73 
 1.40 
 
 1.13 
 1.00 
 1.90 
 1.68 
 1.22 
 
 1.39 
 1.30 
 1.29 
 1.53 
 1.10 
 
 1.00 
 .93 
 
 .93 
 .88 
 .90 
 
 .85 
 
 .81 
 
 .79 
 
 1.10 
 
 1.13 
 
 1.00 
 1.18 
 1.03 
 1.28 
 .91 
 .85 
 
 0.82 
 .80 
 
 .83 
 .78 
 .73 
 
 .70 
 
 .72 
 
 .70 
 
 . 1.13 
 
 1.13 
 
 1.40 
 1.19 
 1.33 
 1.90 
 1.63 
 
 1.23 
 1.05 
 1.23 
 1.05 
 .95 
 
 .90 
 1.63 
 1.00 
 
 .90 
 
 .85 
 
 1.03 
 
 1.00 
 .85 
 1.08 
 1.05 
 1.00 
 
 1.00 
 1.93 
 1.70 
 1.65 
 1.20 
 
 1.50 
 1.80 
 1.23 
 1.10 
 1.03 
 
 .95 
 .90 
 
 .88 
 .82 
 .80 
 
 .78 
 .78 
 .73 
 .71 
 .75 
 
 .70 
 .69 
 .69 
 
 .70 
 .68 
 
 .65 
 .63 
 .61 
 .71 
 1.35 
 
 0.83 
 
 1.90 
 
 .90 
 
 .79 
 
 .72 
 
 .70 
 .73 
 .70 
 .98 
 .83 
 
 .95 
 1.03 
 
 .98 
 1.80 
 1.28 
 
 1.00 
 .90 
 
 .88 
 .81 
 .93 
 
 1.95 
 1.90- 
 1.89 
 1.58 
 1.25 
 
 1.78 
 1.88 
 1.93 
 1.60 
 1.70 
 1.50 
 
 1.58 
 1.30 
 1.60 
 1.20 
 1.10 
 
 1.03 
 
 .98 
 
 .91 
 
 1.93 
 
 1.88 
 
 1.75 
 1.30 
 1.15 
 1.05 
 1.00 
 
 1.95 
 1.90 
 2.00 
 1.85 
 1.90 
 
 1.85 
 1.60 
 1.40 
 1.23 
 1.82 
 
 1.37 
 1.15 
 1.10 
 1.00 
 1.10 
 
 1.60 
 
 2 
 
 1.20 
 
 3 
 
 1.65 
 
 4 
 
 1.60 
 
 5 
 
 1.43 
 
 6 
 
 1.30 
 
 7 
 
 1.48 
 
 8 
 
 1.30 
 
 9 
 
 1.20 
 
 10 
 
 1.10 
 
 11 
 
 1.00 
 
 12 
 
 .98 
 
 
 .90 
 
 14 
 
 1.13 
 
 15 
 
 .90 
 
 16 
 
 1.10 
 
 17 
 
 .90 
 
 18 
 
 .98 
 
 19 
 
 1.95 
 
 
 1.30 
 
 21 
 
 1.93 
 
 22 
 
 1.93 
 
 
 1.95 
 
 24 
 
 1.70 
 
 25 
 
 1.75 
 
 26 
 
 1.88 
 
 27 
 
 1.63 
 
 
 1.88 
 
 29 
 
 1.38 
 
 
 1.30 
 
 31 
 
 1.40 
 
 
 
 je, in second-feet, of Sprechels ditch at station No. 2, near Huelo, Maui, 
 for 1912. 
 
 Dec. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 8.0 
 
 1.9 
 
 35.0 
 
 34.2 
 
 10.6 
 
 4.6 
 
 4.0 
 
 4.4 
 
 8.0 
 
 4.6 
 
 22.4 
 
 13.6 
 
 1.7 
 
 36.5 
 
 36.5 
 
 11.0 
 
 4.6 
 
 20.0 
 
 4.0 
 
 36.5 
 
 35.0 
 
 14.0 
 
 7.6 
 
 1.8 
 
 36.0 
 
 39.0 
 
 35.0 
 
 3.9 
 
 23.8 
 
 4.6 
 
 27.0 
 
 6.0 
 
 23.0 
 
 6.6 
 
 1.5 
 
 34.2 
 
 49.0 
 
 36.0 
 
 3.8 
 
 28.2 
 
 3.8 
 
 25.0 
 
 3.9 
 
 12.0 
 
 6.0 
 
 1.4 
 
 34.6 
 
 32.2- 
 
 28.2 
 
 3.1 
 
 17.0 
 
 3.3 
 
 12.0 
 
 3.2 
 
 10.0 
 
 4.6 
 
 1.3 
 
 31.0 
 
 30.2 
 
 20.9 
 
 3.0 
 
 10.6 
 
 3.0 
 
 20.0 
 
 3.0 
 
 8.6 
 
 4.6 
 
 1.2 
 
 36.5 
 
 36.5 
 
 14.9 
 
 3.9 
 
 8.0 
 
 3.2 
 
 31.0 
 
 3.3 
 
 7.6 
 
 5.0 
 
 1.3 
 
 29.0 
 
 45.0 
 
 23.0 
 
 6.6 
 
 35.0 
 
 3.0 
 
 12.6 
 
 3.0 
 
 6.2 
 
 6.0 
 
 6.0 
 
 35.0 
 
 31.0 
 
 13.0 
 
 9.8 
 
 26.2 
 
 10.6 
 
 10.0 
 
 7.6 
 
 36.5 
 
 4.6 
 
 2.7 
 
 36.0 
 
 35.0 
 
 10.6 
 
 37.5 
 
 12.4 
 
 10.6 
 
 8.6 
 
 4.6 
 
 34.2 
 
 3.8 
 
 3.0 
 
 39.0 
 
 36.5 
 
 9.6 
 
 28.2 
 
 16.7 
 
 17.0 
 
 7.0 
 
 7.0 
 
 29.0 
 
 3.5 
 
 2.2 
 
 36.5 
 
 35.0 
 
 8.4 
 
 11.6 
 
 14.0 
 
 11.8 
 
 6.0 
 
 8.6 
 
 14.0 
 
 3.3 
 
 13.0 
 
 34.2 
 
 30.2 
 
 7.6 
 
 14.0 
 
 13.8 
 
 14.9 
 
 5.6 
 
 7.6 
 
 11.0 
 
 3.1 
 
 7.4 
 
 35.0 
 
 35.0 
 
 7.0 
 
 9.6 
 
 20.9 
 
 35.0 
 
 4.4 
 
 31.0 
 
 9.0 
 
 3.1 
 
 3.5 
 
 25.0 
 
 31.0 
 
 6.0 
 
 11.0 
 
 10.0 
 
 24.2 
 
 4.0 
 
 13.6 
 
 8.0 
 
 3.0 
 
 2.8 
 
 17.0 
 
 36.5 
 
 6.0 
 
 12.4 
 
 8.0 
 
 12.6 
 
 3.8 
 
 8.0 
 
 37.5 
 
 2.9 
 
 3.0 
 
 27.0 
 
 36.5 
 
 5.6 
 
 7.8 
 
 6.6 
 
 9.0 
 
 3.8 
 
 6.0 
 
 35.0 
 
 2.8 
 
 2.3 
 
 34.2 
 
 27.0 
 
 5.6 
 
 6.0 
 
 6.6 
 
 12.6 
 
 3.3 
 
 5.6 
 
 40.0 
 
 2.5 
 
 20.6 
 
 36.5 
 
 20.9 
 
 5.6 
 
 12.0 
 
 5.6 
 
 9.0 
 
 3.1 
 
 4.2 
 
 33.0 
 
 2.3 
 
 36.5 
 
 25.0 
 
 36.5 
 
 7.8 
 
 24.2 
 
 6.0 
 
 7.0 
 
 3.5 
 
 6.6 
 
 35.0 
 
 2.2 
 
 39.5 
 
 17.0 
 
 26.2 
 
 5.8 
 
 27.0 
 
 5.0 
 
 6.0 
 
 3.0 
 
 37.5 
 
 33.0 
 
 2.0 
 
 31.4 
 
 12.4 
 
 34.2 
 
 4.0 
 
 8.6 
 
 4.2 
 
 24.2 
 
 2.9 
 
 35.0 
 
 23.0 
 
 2.0 
 
 28.2 
 
 16.4 
 
 20.0 
 
 3.8 
 
 7.8 
 
 3.9 
 
 8.0 
 
 2.9 
 
 34.6 
 
 17.0 
 
 5.8 
 
 14.3 
 
 12.0 
 
 14.0 
 
 5.6 
 
 13.8 
 
 10.0 
 
 6.0 
 
 3.0 
 
 22.4 
 
 12.6 
 
 3.0 
 
 15.5 
 
 13.6 
 
 35.0 
 
 3.5 
 
 8.6 
 
 10.6 
 
 5.0 
 
 2.8 
 
 13.0 
 
 31.8 
 
 2.2 
 
 40.0 
 
 28.2 
 
 36.5 
 
 35.0 
 
 6.6 
 
 8.0 
 
 8.6 
 
 2.5 
 
 30.2 
 
 16.1 
 
 2.0 
 
 35.0 
 
 13.6 
 
 30.2 
 
 • 23.0 
 
 9.0 
 
 11.6 
 
 8.0 
 
 2.3 
 
 34.2 
 
 11.0 
 
 1.9 
 
 34.2 
 
 11.8 
 
 17.9 
 
 14.0 
 
 7.0 
 
 8.6 
 
 5.0 
 
 2.1 
 
 36.5 
 
 10.0 
 
 1.8 
 
 36.0 
 
 9.0 
 
 13.8 
 
 9.6 
 
 5.6 
 
 13.6 
 
 9.6 
 
 3.1 
 
 23.0 
 
 8.0 
 
 1.7 
 
 
 36.5 
 
 13.6 
 
 7.0 
 
 4.2 
 
 6.2 
 
 9.0 
 
 15.5 
 
 27.0 
 
 10.0 
 
 2.5 
 
 
 35.0 
 
 
 6.0 
 
 
 5.0 
 
 8.0 
 
 
 20.0 
 
 
 23.0 
 12.0 
 25.0 
 23.0 
 17.9 
 
 14.0 
 19.4 
 14.0 
 12.0 
 10.0 
 
 8.0 
 7.6 
 6.0 
 10.6 
 6.0 
 
 10.0 
 
 6.0 
 
 7.6 
 
 37.5 
 
 14.0 
 
 36.5 
 36.5 
 37.5 
 27.0 
 29.0 
 
 34.2 
 24.2 
 34.2 
 16.4 
 14.0 
 17.0 
 
176 
 
 Monthly discharge of Spreclcels ditch at station No. 2, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 13.6 
 40.0 
 39.0 
 49.0 
 36.0 
 37.5 
 35.0 
 35.0 
 36.5 
 37.5 
 40.0 
 37.5 
 
 49.0 
 
 1.7 
 
 1.2 
 9.0 
 13.6 
 3.5 
 3.0 
 3.9 
 3.0 
 2.1 
 3.0 
 6.2 
 6.0 
 
 1.2 
 
 4.00 
 13.40 
 27.70 
 31.20 
 12.60 
 10.20 
 12.30 
 9.71 
 9.18 
 16.00 
 20.00 
 19.00 
 
 15.4 
 
 246.0 
 
 771.0 
 
 1,700.0 
 
 1,860.0 
 
 775.0 
 
 607.0 
 
 756.0 
 
 597.0 
 
 546.0 
 
 984.0 
 
 1,190.0 
 
 1,170.0 
 
 11,200.0 
 
 SPRECKELS DITCH AT STATION NO. 3, NEAR HTTELO, MAUI. 
 
 Location. — About 6f miles by trail southeast of Huelo post office, and 400 feet above 
 
 junction of ditch with Haipuaena Stream. 
 Records available. — December 18, 1910, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, about 4.30 p. m.; datum unchanged. 
 Channel. — Permanent . 
 
 Discharge measurements. — Made from log near gage. 
 Accuracy. — Record good. 
 Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 
 
 Discharge measurements of Sprechels ditch at station No. 3, near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 23 
 Nov. 10 
 
 J. B. Stewart 
 
 Feet. 
 0.87 
 2.25 
 
 Sec.-ft. 
 5.22 
 
 do 
 
 34.0 
 
 
 
 
 Daily gage height, in feet, of Spreckels ditch at station No. 3, near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.30 
 1.75 
 1.33 
 1.28 
 1.20 
 
 1.15 
 1.13 
 1.17 
 1.20 
 1.10 
 
 1.05 
 
 1.05 
 
 1.00 
 
 .98 
 
 .97 
 
 .93 
 .91 
 
 .88 
 .85 
 .83 
 
 0.72 
 .71 
 .72 
 .70 
 .69 
 
 .68 
 
 .66 
 
 .65 
 
 1.20 
 
 .87 
 
 .91 
 
 .81 
 
 1.65 
 
 1.29 
 
 1.00 
 
 .90 
 
 .90 
 
 .81 
 
 1.98 
 
 2.25 
 
 2.45 
 2.33 
 2.30 
 2.25 
 2.25 
 
 2.23 
 2.33 
 2.23 
 2.30 
 2.30 
 
 2.73 
 2.40 
 2.43 
 2.28 
 2.15 
 
 1.83 
 2.25 
 2.25 
 2.33 
 2.15 
 
 2.23 
 2.30 
 2.45 
 3.15 
 2.35 
 
 2.25 
 
 2.40 
 3.00 
 2.28 
 2.35 
 
 2.35 
 2.33 
 2.25 
 
 2.28 
 2.25 
 
 2.35 
 2.33 
 2.23 
 2.05 
 2.53 
 
 1.50 
 1.50 
 2.23 
 2.30 
 1.25 
 
 2.05 
 1.78 
 2.10 
 1.70 
 1.50 
 
 1.40 
 1.30 
 1.28 
 1.23 
 1.15 
 
 1.15 
 1.10 
 1.10 
 1.10 
 1.30 
 
 1.13 
 1.13 
 1.08 
 1.03 
 .99 
 
 .95 
 1.03 
 1.25 
 1.43 
 2.35 
 
 2.23 
 1.53 
 
 1.78 
 1.43 
 1.49 
 
 1.63 
 1.30 
 1.20 
 1.60 
 2.20 
 
 1.43 
 
 1.98 
 2.10 
 2.35 
 2.08 
 
 1.53 
 1.30 
 2.26 
 2.23 
 1.70 
 
 2.00 
 1.50 
 1.73 
 1.80 
 1.45 
 
 1.30 
 1,28 
 1.25 
 1.18 
 1.20 
 
 1.10 
 1.05 
 1.10 
 1.05 
 .98 
 
 .93 
 
 .95 
 
 .90 
 
 1.50 
 
 1.50 
 
 1.80 
 1.55 
 1.75 
 2.35 
 2.13 
 
 1.73 
 1.40 
 1.40 
 1.40 
 1.25 
 
 1.33 
 2.30 
 2.28 
 2.20 
 1.68 
 
 1.98 
 2.20 
 1.65 
 1.50 
 1.35 
 
 1.28 
 1.20 
 1.13 
 1.10 
 1.08 
 
 1.00 
 
 1.00 
 
 .98 
 
 .95 
 
 1.00 
 
 1.28 
 2.25 
 1.20 
 1.03 
 .98 
 
 .90 
 
 .95 
 
 .93 
 
 1.38 
 
 1.04 
 
 1.05 
 1.30 
 1.23 
 2.20 
 1.70 
 
 1.33 
 1.20 
 1.13 
 1.10 
 1.25 
 
 2.18 
 1.75 
 2.13 
 1.60 
 1.48 
 
 1.38 
 1.30 
 1.23 
 2.65 
 2.23 
 
 2.20 
 1.75 
 
 1.58 
 1.43 
 1.30 
 
 2.50 
 2.33 
 2.70 
 2.30 
 2.35 
 
 1.20 
 
 2 
 
 2.30 
 
 3 
 
 2.20 
 
 4 
 
 2.25 
 
 5 
 
 1.93 
 
 6 
 
 1.70 
 
 7 
 
 1.95 
 
 8 
 
 1.78 
 
 9 
 
 1.6,8 
 
 10 
 
 1.50 
 
 11 
 
 1.38 
 
 12 
 
 1.30 
 
 13 
 
 1.25 
 
 14 
 
 1.50 
 
 15 
 
 1.98 
 
 16 
 
 1.48 
 
 17 
 
 1.23 
 
 18 
 
 1.35 
 
 19 
 
 2.43 
 
 20 
 
 1.80 
 
ISLAND OF MAUI. 
 
 177 
 
 Daily gage height, in feet, of Spreckels ditch at station No. 3, near Huelo, Maui, for 
 
 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 0.81 
 
 .80 
 
 .80 
 
 1.15 
 
 .89 
 
 .80 
 .78 
 .76 
 .74 
 
 .71 
 
 .84 
 
 2.43 
 2.30 
 2.20 
 1.75 
 1.80 
 
 2.30 
 2.35 
 2.30 
 2.25 
 
 1.88 
 1.60 
 1.70 
 1.53 
 1.68 
 
 2.20 
 1.65 
 1.50 
 1.35 
 2.28 
 2.25 
 
 2.23 
 2.30 
 2.00 
 
 1.88 
 2.30 
 
 2.33 
 2.25 
 1.93 
 1.73 
 1.55 
 
 1.13 
 1.05 
 1.00 
 1.18 
 1.00 
 
 2.35 
 2.15 
 1.85 
 1.48 
 1.30 
 1.20 
 
 2.23 
 1.38 
 1.33 
 1.80 
 1.40 
 
 1.23 
 
 1.40 
 1.29 
 1.18 
 1.10 
 
 1.18 
 1.13 
 1.03 
 1.50 
 1.50 
 
 1.30 
 1.60 
 1.33 
 1.73 
 1.20 
 1.13 
 
 1.20 
 2.10 
 1.30 
 1.20 
 1.18 
 
 1.35 
 1.30 
 1.10 
 1.40 
 1.38 
 1.30 
 
 0.90 
 .89 
 .89 
 .90 
 
 .85^ 
 
 .83 
 .80 
 .78 
 .93 
 1.80 
 
 2.45 
 2.25 
 2.30 
 2.20 
 1.90 
 
 2.28 
 2.43 
 2.30 
 2.10 
 2.20 
 2.00 
 
 2.30 
 2.13 
 1.93 
 1.70 
 2.35 
 
 1.90 
 1.55 
 1.52 
 1.40 
 1.50 
 
 2.40 
 
 22 
 
 2.35 
 
 23 
 
 2.40 
 
 24 
 
 2.20 
 
 25 
 
 2.23 
 
 26 
 
 2.30 
 
 27 
 
 2.15 
 
 28 
 
 2.35 
 
 29 
 
 1.90 
 
 30 
 
 1.80 
 
 31 
 
 1.70 
 
 Daily discharge, in second-feet, of Spreckels ditch at station No. 3, near Huelo, Maui, 
 
 for 1912. 
 
 Day. 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 1. 
 2. 
 3. 
 4. 
 
 5. 
 
 6. 
 
 7. 
 8. 
 9. 
 10. 
 
 11. 
 
 12. 
 13. 
 14. 
 15. 
 
 16. 
 17. 
 18. 
 19. 
 20. 
 
 21. 
 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 14.0 
 23.0 
 14.6 
 13.6 
 12.0 
 
 11.0 
 10.6 
 11.4 
 12.0 
 10.0 
 
 9.0 
 9.0 
 8.0 
 7.6 
 
 7.4 
 
 6.6 
 6.2 
 5.6 
 5.1 
 
 4.7 
 
 4.4 
 4.2 
 4.2 
 11.0 
 5.8 
 
 4.2 
 3.9 
 3.6 
 3.3 
 2.8 
 4.9 
 
 3.0 
 2.8 
 3.0 
 2.7 
 2.6 
 
 2.5 
 2.2 
 2.1 
 12.0 
 5.5 
 
 6.2 
 4.4 
 21.0 
 13.8 
 8.0 
 
 6.0 
 
 6.0 
 
 4.4 
 
 27.6 
 
 33.0 
 
 36.6 
 34.0 
 32.0 
 23.0 
 24.0 
 
 34.0 
 35.0 
 34.0 
 33.0 
 
 37.0 
 34.6 
 34.0 
 33.0 
 33.0 
 
 32.6 
 34.6 
 32.6 
 34.0 
 34.0 
 
 42.6 
 36.0 
 36.6 
 33.6 
 31.0 
 
 24.6 
 33.0 
 33.0 
 34.6 
 31.0 
 
 25.6 
 20.0 
 22.0 
 18.6 
 21.6 
 
 32.0 
 21.0 
 18.0 
 15.0 
 33.6 
 33.0 
 
 32.6 
 34.0 
 37.0 
 51.0 
 35.0 
 
 33.0 
 .36.0 
 48.0 
 33.6 
 35.0 
 
 35.0 
 34.6 
 33.0 
 33.6 
 33.0 
 
 35.0 
 34.6 
 32.6 
 29.0 
 38.6 
 
 32.6 
 34.0 
 28.0 
 25.6 
 34.0 
 
 34.6 
 33.0 
 26.6 
 22.6 
 19.0 
 
 18.0 
 18.0 
 32.6 
 34.0 
 13.0 
 
 29.0 
 23.6 
 30.0 
 22.0 
 18.0 
 
 16.0 
 14.0 
 13.6 
 12.6 
 11.0 
 
 11.0 
 10.0 
 10.0 
 10.0 
 14.0 
 
 10.6 
 9.0 
 8.0 
 
 11.6 
 8.0 
 
 35.0 
 31.0 
 25.0 
 17.6 
 14.0 
 12.0 
 
 10.6 
 10.6 
 
 7.8 
 
 7.0 
 
 8.6 
 
 13.0 
 
 16.6 
 
 35.0 
 
 32.6 
 18.6 
 23.6 
 16.6 
 17.8 
 
 20.6 
 14.0 
 12.0 
 20.0 
 32.0 
 
 32.6 
 15.6 
 14.6 
 24.0 
 16.0 
 
 12.6 
 16.0 
 13.8 
 11.6 
 10.0 
 
 16.6 
 27.6 
 30.0 
 35.0 
 29.6 
 
 18.6 
 14.0 
 33.0 
 32.6 
 22.0 
 
 28.0 
 18.0 
 22.6 
 24.0 
 17.0 
 
 14.0 
 13.6 
 13.0 
 11.6 
 12.0 
 
 11.6 
 10.6 
 8.6 
 18.0 
 18.0 
 
 14.0 
 20.0 
 14.6 
 22.6 
 12.0 
 10.6 
 
 10.0 
 9.0 
 
 10.0 
 9.0 
 7.6 
 
 6.6 
 7.0 
 6.0 
 18.0 
 18.0 
 
 24.0 
 19.0 
 23.0 
 35.0 
 30.6 
 
 22.6 
 16.0 
 16.0 
 16.0 
 13.0 
 
 12.0 
 30.0 
 14.0 
 12.0 
 11.6 
 
 15.0 
 14.0 
 10.0 
 16.0 
 15.6 
 14.0 
 
 14.6 
 34.0 
 33.6 
 32.0 
 21.6 
 
 27.6 
 32.0 
 21.0 
 18.0 
 15.0 
 
 13.6 
 12.0 
 10.6 
 10.0 
 9.6 
 
 8.0 
 8.0 
 7.6 
 7.0 
 8.0 
 
 6.0 
 5.8 
 5.8 
 6.0 
 5.1 
 
 4.7 
 4.2 
 3.9 
 6.6 
 24.0 
 
 13.6 
 
 33.0 
 
 12.0 
 
 8.6 
 
 7.6 
 
 6.0 
 7.0 
 6.6 
 15.6 
 8.8 
 
 9.0 
 14.0 
 12.6 
 32.0 
 22.0 
 
 14.6 
 12.0 
 10.6 
 10.0 
 13.0 
 
 37.0 
 33.0 
 34.0 
 32.0 
 26.0 
 
 33.6 
 36.6 
 34.0 
 30.0 
 32.0 
 28.0 
 
 31.6 
 23.0 
 30.6 
 20.0 
 17.6 
 
 15.6 
 14.0 
 12.6 
 41.0 
 32.6 
 
 32.0 
 23.0 
 19.6 
 16.6 
 14.0 
 
 38.0 
 34.6 
 42.0 
 34.0 
 35.0 
 
 34.0 
 30.6 
 26.6 
 22.0 
 35.0 
 
 26.0 
 19.0 
 18.4 
 16.0 
 18.0 
 
 12.0 
 34.0 
 32.0 
 33.0 
 26.6 
 
 22.0 
 27.0 
 23.6 
 21.6 
 18.0 
 
 15.6 
 14.0 
 13.0 
 18.0 
 27.6 
 
 17.6 
 12.6 
 15.0 
 36.6 
 24.0 
 
 36.0 
 35.0 
 36.0 
 32.0 
 32.6 
 
 34.0 
 31.0 
 35.0 
 26.0 
 24.0 
 22.0 
 
 Monthly discharge of Spreckels ditch at station No. 
 
 3, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 racy. 
 
 January 
 
 23.0 
 36.6 
 42.6 
 51.0 
 35.0 
 35.0 
 35.0 
 35.0 
 34.0 
 37.0 
 42.0 
 36.6 
 
 2.8 
 2.1 
 15.0 
 19.0 
 8.0 
 7.0 
 8.6 
 6.0 
 3.9 
 6.0 
 12.6 
 12.0 
 
 8.18 
 15.70 
 30.20 
 33.50 
 17.50 
 16.70 
 19.10 
 15.50 
 - 13.90 
 20.20 
 25.80 
 .25.40 
 
 503 
 
 903 
 
 1,860 
 
 1,990 
 
 1,080 
 
 994 
 
 1,170 
 
 953 
 
 827 
 
 1,240 
 
 1,540 
 
 1,560 
 
 B. 
 
 February 
 
 B. 
 
 March ■ 
 
 A. 
 
 April 1 . . 
 
 A. 
 
 May 
 
 A. 
 
 June 
 
 A. 
 
 July 
 
 A. 
 
 August 
 
 A. 
 
 September 
 
 B. 
 
 October 
 
 A. 
 
 November .^ 
 
 A. 
 
 December : : . . . 
 
 A. 
 
 
 
 The year 
 
 51.0 
 
 2.1 
 
 20.10 
 
 14,600 
 
 
 
 
 14694°— wsp 336—14 12 
 
178 
 
 SPRECKELS DITCH AT STATION NO. 4, NEAR HTJELO, MAUI. 
 
 Location. — About 6£ miles by trail southeast of Huelo post office, and about 250 feet 
 above junction with small tributary of Puohakamoa Stream. 
 
 Records available. — December 18, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read once daily, usually between 3 and 5 p. m.; datum 
 unchanged. 
 
 Channel. — Permanent. 
 
 Discharge measurements. — Made from log at gage. 
 
 Accuracy. — Records good. 
 
 Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 
 
 Discharge measurements of Spreckels ditch at station No. 4, near Huelo, Maui, in 1912, 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 23 
 Nov. 10 
 
 J. B. Stewart 
 
 Feet. 
 0.55 
 1.70 
 
 Sec-feet. 
 6.40 
 
 do 
 
 34.5 
 
 
 
 
 Daily gage height, in feet, of Spreckels ditch at station No. 4, near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar.- 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.03 
 
 1.28 
 
 1.08 
 
 1.00 
 
 .93 
 
 .85 
 .83 
 .88 
 .93 
 .80 
 
 .73 
 .70 
 .67 
 .65 
 .63 
 
 .59 
 .58 
 .55 
 .55 
 
 .52 
 
 .50 
 .49 
 .48 
 .93 
 .58 
 
 .50 
 .47 
 .45 
 .42 
 .40 
 .53 
 
 0.43 
 .39 
 .40 
 .39 
 
 .38 
 
 .35 
 .33 
 .32 
 
 .98 
 .55 
 
 .61 
 
 .51 
 
 1.38 
 
 1.08 
 
 .73 
 
 .60 
 
 .60 
 
 .53 
 
 1.63 
 
 1.95 
 
 2.10 
 
 1.78 
 1.72 
 1.45 
 1.50 
 
 1.80 
 2.00 
 1.88 
 1.80 
 
 1.80 
 1.90 
 1.83 
 1.78 
 1.75 
 
 1.73 
 1.90 
 1.73 
 
 1.88 
 1.88 
 
 2.30- 
 1.90 
 1.80 
 1.78 
 1.68 
 
 1.50 
 1.73 
 
 1.78 
 1.88 
 1.70 
 
 1.50 
 1.32 
 1.45 
 1.28 
 1.33 
 
 1.70 
 1.33 
 1.25 
 1.13 
 2.03 
 1.85 
 
 1.80 
 1.83 
 1.90 
 2.15 
 1.65 
 
 1.75 
 2.05 
 2.03 
 1.85 
 1.80 
 
 1.70 
 1.80 
 1.70 
 1.73 
 1.70 
 
 1.83 
 1.78 
 1.70 
 1.60 
 1.90 
 
 1.70 
 1.75 
 1.58 
 1.50 
 1.75 
 
 1.80 
 1.70 
 1.53 
 1.40 
 1.30 
 
 1.23 
 1.23 
 1.63 
 1.73 
 1.70 
 
 1.60 
 1.45 
 1.63 
 1.33 
 1.20 
 
 1.10 
 
 1.03 
 
 1.00 
 
 .93 
 
 .88 
 
 .85 
 .80 
 .80 
 .80 
 1.00 
 
 .83 
 .70 
 .65 
 .89 
 .68 
 
 1.80 
 1.68 
 1.50 
 1.20 
 1.03 
 .93 
 
 0.85 
 .85 
 .78 
 .68 
 .65 
 
 .62 
 
 .68 
 
 .95 
 
 1.13 
 
 1.90 
 
 1.78 
 1.30 
 1.45 
 1.15 
 1.23 
 
 1.30 
 1.03 
 .93 
 1.30 
 1.60 
 
 1.73 
 1.10 
 1.08 
 1.48 
 1.13 
 
 1.00 
 1.13 
 1.03 
 .90 
 .80 
 
 1.15 
 1.58 
 1.70 
 1.75 
 1.60 
 
 1.25 
 1.08 
 1.83 
 1.73 
 1.35 
 
 1.53 
 1.20 
 1.43 
 1.48 
 1.20 
 
 1.10 
 
 1.00 
 
 .98 
 
 .90 
 
 .90 
 
 .88 
 
 .82 
 
 .75 
 
 1.23 
 
 1.23 
 
 1.03 
 1.23 
 1.05 
 1.38 
 .95 
 .83 
 
 0.75 
 
 .70 
 .80 
 .68 
 .63 
 
 .60 
 .60 
 .58 
 1.23 
 1.23 
 
 1.50 
 1.30 
 1.45 
 1.88 
 1.70 
 
 1.38 
 1.13 
 1.10 
 1.13 
 .98 
 
 .90 
 1.65 
 1.08 
 .90 
 .85 
 
 1.03 
 1.08 
 .80 
 1.15 
 1.10 
 1.05 
 
 1.05 
 1.90 
 1.75 
 1.73 
 1.33 
 
 1.58 
 1.75 
 1.33 
 1.20 
 1.08 
 
 1.00 
 .93 
 .88 
 .80 
 .75 
 
 .70 
 .70 
 .65 
 .63 
 .65 
 
 .60 
 .58 
 .53 
 .60 
 .52 
 
 .50 
 .49 
 .45 
 .58 
 1.50 
 
 1.05 
 
 1.90 
 
 1.40 
 
 .78 
 
 .70 
 
 .60 
 .65 
 .63 
 .93 
 .80 
 
 .70 
 1.05 
 1.03 
 1.73 
 1.40 
 
 1.10 
 .95 
 .85 
 .80 
 
 1.00 
 
 1.88 
 1.83 
 1.80 
 1.70 
 1.40 
 
 1.75 
 1.98 
 1.80 
 1.53 
 1.75 
 1.83 
 
 1.50 
 1.43 
 1.63 
 1.30 
 1.18 
 
 1.10 
 1.03 
 .98 
 2.10 
 1.70 
 
 1.70 
 1.40 
 1.30 
 1.23 
 1.08 
 
 1.90 
 1.83 
 2.10 
 1.70 
 1.85 
 
 1.70 
 1.68 
 1.50 
 1.35 
 1.67 
 
 1.47 
 1.25 
 1.20 
 1.10 
 1.17 
 
 1.60 
 
 2 
 
 1.45 
 
 3 
 
 1.55 
 
 4 
 
 1.58 
 
 5. 
 
 1.50 
 
 6 
 
 1.30 
 
 7 
 
 1.55 
 
 8 
 
 1.38 
 
 9 
 
 1.30 
 
 10 
 
 1.20 
 
 11 
 
 1.08 
 
 12 
 
 1.05 
 
 13 
 
 .98 
 
 14.... 
 
 1.20 
 
 15 
 
 .98 
 
 16 
 
 1.23 
 
 17 
 
 .95 
 
 18 
 
 1.03 
 
 19 
 
 1.93 
 
 20 
 
 1.43 
 
 21 
 
 1.83 
 
 22 
 
 1.80 
 
 23 
 
 1.90 
 
 24 
 
 1.55 
 
 25 
 
 1.53 
 
 26 
 
 1.83 
 
 27... 
 
 1.55 
 
 28 
 
 1.63 
 
 29 
 
 1.43 
 
 30 
 
 1.40 
 
 31 
 
 1.33 
 
 
 
ISLAND OF MAUI. 
 
 179 
 
 Daily discharge, in second-feet, of Spreckels ditch at station No. 4, near Euelo, Maui, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 16.2 
 22.5 
 17.5 
 15.5 
 13.8 
 
 12.0 
 11.6 
 12.6 
 13.8 
 11.0 
 
 9.6 
 9.0 
 8.4 
 8.0 
 7.6 
 
 6.8 
 6.6 
 6.0 
 6.0 
 5.4 
 
 5.0 
 4.8 
 4.7 
 13.8 
 6.6 
 
 5.0 
 4.6 
 4.2 
 3.8 
 3.5 
 5.6 
 
 4.0 
 3.4 
 3.5 
 3.4 
 3.2 
 
 2.8 
 2.4 
 2.3 
 15.0 
 6.0 
 
 7.2 
 5.2 
 25.0 
 17.5 
 9.6 
 
 7.0 
 
 7.0 
 
 5.6 
 
 31.9 
 
 41.5 
 
 46.0 
 36.4 
 34.6 
 26.8 
 28.0 
 
 37.0 
 43.0 
 39.4 
 37.0 
 
 37.0 
 40.0 
 37.9 
 36.4 
 35.5 
 
 34.9 
 40.0 
 34.9 
 39.4 
 39.4 
 
 52.0 
 40.0 
 37.0 
 36.4 
 33.4 
 
 28.0 
 34.9 
 36.4 
 39.4 
 34.0 
 
 28.0 
 23.5 
 26.8 
 22.5 
 23.8 
 
 34.0 
 23.8 
 21.8 
 18.8 
 43.9 
 38.5 
 
 37.0 
 37.9 
 40.0 
 47.5 
 32.5 
 
 35.5 
 
 44.5 
 43.9 
 38.5 
 37.0 
 
 34.0 
 37.0 
 34.0 
 34.9 
 34.0 
 
 37.9 
 36.4 
 34.0 
 31.0 
 40.0 
 
 34.0 
 35.5 
 30.4 
 28.0 
 35.5 
 
 37.0 
 34.0 
 28.9 
 25.5 
 23.0 
 
 21.2 
 21.2 
 31.9 
 34.9 
 34.0 
 
 31.0 
 26.8 
 31.9 
 23.8 
 20.5 
 
 18.0 
 16.2 
 15.5 
 13.8 
 12.6 
 
 12.0 
 11.0 
 11.0 
 11.0 
 15.5 
 
 11.6 
 9.0 
 8.0 
 
 12.8 
 8.6 
 
 37.0 
 
 33.4 
 28.0 
 20.5 
 16.2 
 13.8 
 
 12.0 
 12.0 
 10.6 
 8.6 
 8.0 
 
 7.4 
 8.6 
 14.2 
 18.8 
 40.0 
 
 36.4 
 23.0 
 26.8 
 19.2 
 21.2 
 
 23.0 
 16.2 
 13.8 
 23.0 
 31.0 
 
 34.9 
 
 18.0 
 17.5 
 27.5 
 18.8 
 
 15.5 
 18.8 
 16.2 
 13.0 
 11.0 
 
 19.2 
 30.4 
 34.0 
 35.5 
 31.0 
 
 21.8 
 17.5 
 37.9 
 34.9 
 24.2 
 
 28.9 
 20.5 
 26.2 
 27.5 
 20.5 
 
 18.0 
 15.5 
 15.0 
 13.0 
 13.0 
 
 12.6 
 11.4 
 10.0 
 21.2 
 21.2 
 
 16.2 
 21.2 
 16.8 
 25.0 
 14.2 
 11.6 
 
 10.0 
 9.0 
 11.0 
 
 8.6 
 7.6 
 
 ' 7.0 
 7.0 
 6.6 
 21.2 
 21.2 
 
 28.0 
 23.0 
 26.8 
 39.4 
 34.0 
 
 25.0 
 
 18.8 
 18.0 
 18.8 
 15.0 
 
 13.0 
 
 32.5 
 17.5 
 13.0 
 12.0 
 
 16.2 
 17.5 
 11.0 
 19.2 
 18.0 
 16.8 
 
 16.8 
 40.0 
 35.5 
 34.9 
 23.8 
 
 30.4 
 35.5 
 23.8 
 20.5 
 17.5 
 
 15.5 
 13.8 
 12.6 
 11.0 
 10.0 
 
 9.0 
 9.0 
 8.0 
 7.6 
 8.0 
 
 7.0 
 6.6 
 5.6 
 7.0 
 5.4 
 
 5.0 
 4.8 
 4.2 
 6.6 
 28.0 
 
 16.8 
 40.0 
 25.5 
 10.6 
 9.0 
 
 7.0 
 8.0 
 7.6 
 13.8 
 11.0 
 
 9.0 
 16.8 
 16.2 
 34.9 
 25.5 
 
 18.0 
 14.2 
 12.0 
 11.0 
 15.5 
 
 39.4 
 37.9 
 37.0 
 34.0 
 25.5 
 
 35.5 
 
 42.4 
 37.0 
 28.9 
 35.5 
 37.9 
 
 28.0 
 26.2 
 31.9 
 23.0 
 20.0 
 
 18.0 
 16.2 
 15.0 
 46.0 
 34.0 
 
 34.0 
 25.5 
 23.0 
 21.2 
 17.5 
 
 40.0 
 37.9 
 46.0 
 34.0 
 38.5 
 
 34.0 
 33.4 
 28.0 
 24.2 
 33.1 
 
 27.2 
 
 21.8 
 20.5 
 18.0 
 19.8 
 
 31.0 
 
 2 
 
 26.8 
 
 3 
 
 29.5 
 
 4 
 
 30.4 
 
 5 
 
 28.0 
 
 6 
 
 23.0 
 
 7 
 
 29.5 
 
 8 
 
 25.0 
 
 9 
 
 23.0 
 
 10 
 
 20.5 
 
 11 _ 
 
 17.5 
 
 12 
 
 16.8 
 
 13 
 
 15.0 
 
 
 20.5 
 
 15 
 
 15.0 
 
 16 
 
 21.2 
 
 17 
 
 14.2 
 
 18 
 
 16.2 
 
 
 40.9 
 
 20. 
 
 26.2 
 
 21 
 
 37.9 
 
 22 
 
 37.0 
 
 23.. 
 
 40.0 
 
 
 29.5 
 
 25 
 
 28.9 
 
 26 
 
 37.9 
 
 
 29.5 
 
 28 
 
 31.9 
 
 
 26.2 
 
 30 
 
 25.5 
 
 31 
 
 23.8 
 
 
 
 Monthly discharge of Spreckels ditch at station No. 4, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 Minimum. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 22.5 
 46.0 
 52.0 
 47.5 
 37.0 
 40.0 
 35.5 
 39.4 
 40.0 
 42.4 
 46.0 
 40.9 
 
 52.0 
 
 3.5 
 
 2.3 
 
 18.8 
 
 23.0 
 
 8.0 
 
 7.4 
 
 10.0 
 
 6.6 
 
 4.2 
 
 7.0 
 
 15.0 
 
 14.2 
 
 18.30 
 33.90 
 35.30 
 19.80 
 18.80 
 21.50 
 17.50 
 15.40 
 23.00 
 27.90 
 26.40 
 
 2.3 
 
 22.20 
 
 558 
 1,050 
 2,080 
 2,100 
 1,220 
 1,120 
 1,320 
 1,080 
 
 916 
 1,410 
 1,660 
 1,620 
 
 16,100 
 
 SPRECKELS DITCH AT STATION NO. 5, NEAR HTTELO, MAUI. 
 
 Location. — About 5 miles by trail southeast of Huelo post office, and about 500 feet 
 
 above drop into Alo Stream. 
 Records available. — November 6, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, about 6 a. m. and 6 p.m.; datum unchanged. 
 Channel. — Permanent. 
 
 Discharge measurements. — Made from plank at gage. 
 Accuracy. — Very good. 
 Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 
 
180 
 
 Discharge measurements of Spreckels ditch at station No. 5, near Huelo, Maui, in 1912. 
 
 Date. 
 
 ' Hydrographer. 
 
 Gage, 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 22 
 Nov. 7 
 
 J. B. Stewart 
 
 Feet. 
 0.67 
 1.35 
 2.16 
 
 Sec.-ft. 
 11.9 
 
 do 
 
 26.3 
 
 Dec. 20 
 
 C. T. Bailey 
 
 49.1 
 
 
 
 
 Daily gage 
 
 in feet, of Spreckels ditch at station No. 5, near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.54 
 1.74 
 1.44 
 1.27 
 1.15 
 
 1.11 
 1.07 
 1.19 
 1.23 
 1.03 
 
 .92 
 
 .86 
 .82 
 
 .78 
 .74 
 
 .71 
 .68 
 .66 
 .62 
 .60 
 
 .59 
 .58 
 .54 
 .94 
 .74 
 
 .57 
 .51 
 
 .48 
 .46 
 .44 
 .52 
 
 0.48 
 
 .41 
 .45 
 .44 
 .40 
 
 .38 
 
 .36 
 
 1.18 
 
 1.76 
 
 .66 
 
 .62 
 ^60 
 2.14 
 1.76 
 
 .90 
 
 .68 
 
 .64 
 
 .58 
 
 1.96 
 
 2.48 
 
 2.45 
 2.43 
 2.41 
 2.20 
 2.18 
 
 1.90 
 1.82 
 2.30 
 2.14 
 
 2.35 
 2.34 
 2.35 
 2.22 
 2.20 
 
 2.22 
 2.29 
 2.28 
 2.35 
 2.40 
 
 2.50 
 
 2.49 
 2.52 
 2.38 
 2.24 
 
 2.18 
 2.19 
 2.38 
 2.28 
 2.22 
 
 2.24 
 1.96 
 1.92 
 1.86 
 1.83 
 
 2.28 
 1.94 
 1.80 
 1.54 
 2.22 
 2.33 
 
 2.24 
 2.19 
 2.40 
 2.50 
 1.92 
 
 2.36 
 2.53 
 2.44 
 2.22 
 2.34 
 
 2.28 
 2.38 
 2.28 
 2.40 
 2.42 
 
 2.38 
 2.29 
 2.26 
 2.26 
 2.46 
 
 2.28 
 2.30 
 2.29 
 2.28 
 2.33 
 
 2.46 
 2.38 
 2.30 
 2.12 
 1.98 
 
 1.68 
 1.82 
 2.42 
 2.40 
 2.44 
 
 2.36 
 2.04 
 2.30 
 1.90 
 1.64 
 
 1.48 
 1.34 
 1.25 
 1.26 
 1.08 
 
 1.02 
 
 .97 
 
 .96 
 
 1.02 
 
 1.36 
 
 1.10 
 
 .84 
 
 .77 
 
 1.00 
 
 .80 
 
 1.73 
 2.36 
 1.97 
 1.96 
 1.34 
 1.26 
 
 1.04 
 1.00 
 
 .82 
 .83 
 
 .74 
 
 .70 
 
 .76 
 
 1.18 
 
 1.10 
 
 1.90 
 
 2.24 
 1.76 
 2.06 
 1.54 
 1.90 
 
 1.90 
 1.38 
 1.18 
 1.72 
 1.68 
 
 2.06 
 
 1.48 
 1.25 
 2.18 
 1.47 
 
 1.24 
 1.62 
 1.40 
 1.08 
 .94 
 
 1.23 
 1.65 
 2.00 
 2.23 
 2.04 
 
 1.64 
 1.40 
 1.30 
 2.30 
 2.00 
 
 2.10 
 1.71 
 2.07 
 2.16 
 1.71 
 
 1.41 
 1.27 
 1.25 
 1.09 
 1.05 
 
 1.11 
 
 1.02 
 
 .87 
 1.88 
 1.59 
 
 1.27 
 1.38 
 1.41 
 1.60 
 1.13 
 1.00 
 
 0.90 
 
 .85 
 .86 
 .79 
 .71 
 
 .66 
 
 .71 
 
 .66 
 
 1.75 
 
 1159 
 
 2.16 
 1.97 
 1.80 
 1.97 
 2.30 
 
 2.01 
 1.53 
 1.51 
 1.60 
 1.23 
 
 1.10 
 2.10 
 1.46 
 1.11 
 .98 
 
 1.12 
 1.16 
 
 .98 
 1.80 
 1.42 
 
 1.57 
 
 1.45 
 2.40 
 2.16 
 2.20 
 1.92 
 
 2.02 
 
 1.85 
 1.93 
 1.64 
 1.43 
 
 1.28 
 
 1.16 
 
 1.03 
 
 .99 
 
 .91 
 
 .85 
 .86 
 .78 
 .72 
 
 .74 
 
 .70 
 .66 
 .62 
 .71 
 .59 
 
 .59 
 .56 
 .50 
 .62 
 2.15 
 
 1.23 
 1.64 
 1.62 
 
 .88 
 .80 
 
 .72 
 .73 
 .72 
 .96 
 .96 
 
 1.11 
 1.54 
 1.45 
 2.36 
 2.15 
 
 1.46 
 1.18 
 1.22 
 .56 
 1.13 
 
 2.48 
 2.46 
 2.39 
 2.29 
 2.10 
 
 2.10 
 2.50 
 2.50 
 2.30 
 2.40 
 2.16 
 
 2.30 
 2.18 
 2.34 
 1.96 
 1.72 
 
 1.54 
 1.37 
 1,-30 
 2.96 
 2.34 
 
 2.34 
 2.16 
 
 1.98 
 1.66 
 1.46 
 
 2.42 
 2.40 
 2.44 
 2.34 
 2.29 
 
 2.22 
 2.25 
 1.80 
 2.04 
 2.10 
 
 2.14 
 1.83 
 1.72 
 1.44 
 1.55 
 
 2.42 
 
 2 
 
 1.48 
 
 3 
 
 2.90 
 
 4 
 
 .76 
 
 5 
 
 .45 
 
 6 
 
 .44 
 
 7 
 
 1.27 
 
 g 
 
 1.22 
 
 9 
 
 1.18 
 
 10 
 
 .92 
 
 11 
 
 1.45 
 
 12 
 
 1.10 
 
 13 
 
 1.28 
 
 14 
 
 1.44 
 
 15 
 
 1.38 
 
 16 
 
 1.65 
 
 17 
 
 1.28 
 
 18 
 
 2.12 
 
 19 
 
 2.40 
 
 20 
 
 2.18 
 
 21 
 
 2.32 
 
 22 
 
 2.42 
 
 23 
 
 2.52 
 
 24 
 
 2.23 
 
 25 
 
 2.26 
 
 26 
 
 2.35 
 
 27 
 
 2.31 
 
 28 
 
 2.30 
 
 29 
 
 2.16 
 
 30 
 
 2.12 
 
 31 
 
 1.91 
 
 
 
 Daily discharge, in second-feet, of Spreckels ditch at station No. 5, near Huelo, Maui, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 31.0 
 36.0 
 28.5 
 24.2 
 21.2 
 
 20.2 
 19.4 
 22.2 
 23.2 
 18.6 
 
 16.4 
 15.2 
 14.4 
 13.6 
 12.8 
 
 8.7 
 7.6 
 8.2 
 8.1 
 7.5 
 
 7.2 
 
 6.9 
 
 22.0 
 
 36.5 
 
 11.4 
 
 10.8 
 10.5 
 47.2 
 36.5 
 16.0 
 
 53.5 
 53.2 
 53.5 
 49.6 
 49.0 
 
 49.6 
 51.7 
 51.4 
 53.5 
 55.0 
 
 58.0 
 57.7 
 58.6 
 54.4 
 50-2 
 
 50.2 
 48.7 
 55.0 
 58.0 
 40.6 
 
 53.8 
 58.9 
 56.2 
 49.6 
 53.2 
 
 51.4 
 54.4 
 51.4 
 55.0 
 55.6 
 
 34.5 
 38.0 
 55.6 
 55.0 
 56.2 
 
 53.8 
 44.2 
 52.0 
 40.0 
 33.5 
 
 29.5 
 26.0 
 23.8 
 24.0 
 19.6 
 
 18.8 
 18.0 
 14.4 
 14.6 
 12.8 
 
 12.0 
 13.2 
 22.0 
 20.0 
 40.0 
 
 50.2 
 36.5 
 44.8 
 31.0 
 40.0 
 
 23.2 
 33.8 
 43.0 
 49.9 
 44.2 
 
 33.5 
 27.5 
 25.0 
 52.0 
 43.0 
 
 46.0 
 
 35.2 
 45.1 
 47.8 
 35.2 
 
 16.0 
 15.0 
 15.2 
 13.8 
 12.2 
 
 11.4 
 12.2 
 11.4 
 36.2 
 32.2 
 
 47.8 
 42.1 
 37.5 
 42.1 
 52.0 
 
 28.8 
 55.0 
 47.8 
 49.0 
 40.6 
 
 43.6 
 
 38.8 
 40.9 
 33.5 
 28.2 
 
 24.5 
 21.5 
 18.6 
 17.8 
 16.2 
 
 23.2 
 33.5 
 33.0 
 15.6 
 14.0 
 
 12.4 
 12.6 
 12.4 
 17.2 
 17.2 
 
 20.2 
 31.0 
 
 28.8 
 53.8 
 47.5 
 
 52.0 
 
 48.4 
 53.2 
 41.8 
 35.5 
 
 31.0 
 26.8 
 25.0 
 72.8 
 53.2 
 
 53.2 
 
 47.8 
 42.4 
 34.0 
 29.0 
 
 55.6 
 
 2 
 
 29.5 
 
 3 
 
 71.0 
 
 4 
 
 13.2 
 
 5 
 
 8.2 
 
 6 
 
 8.1 
 
 7 
 
 24.2 
 
 8 
 
 23.0 
 
 9 
 
 22.0 
 
 10 
 
 16.4 
 
 11 
 
 28.8 
 
 12 
 
 20.0 
 
 13 
 
 24.5 
 
 14 
 
 28.5 
 
 15 
 
 27.0 
 
ISLAND OF MAUI. 
 
 181 
 
 Daily discharge, in second-feet, of Spreckels ditch at station No. 5, near Huelo, Maui, 
 
 for 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 12.2 
 11.7 
 11.4 
 10.8 
 10.5 
 
 10.4 
 10.2 
 9.6 
 16.8 
 12.8 
 
 10.0 
 9.2 
 
 8.7 
 8.4 
 8.1 
 9.3 
 
 11.7 
 11.1 
 
 10.2 
 41.8 
 57.4 
 
 56.5 
 55.9 
 55.3 
 49.0 
 
 48.4 
 
 40.0 
 38.0 
 52.0 
 
 47.2 
 
 48.4 
 48.7 
 54.4 
 51.4 
 49.6 
 
 50.2 
 41.8 
 40.6 
 39.0 
 38.2 
 
 51.4 
 41.2 
 37.5 
 31.0 
 49.6 
 52.9 
 
 54.4 
 51.7 
 50.8 
 50.8 
 56.8 
 
 51.4 
 52.0 
 51.7 
 51.4 
 52.9 
 
 56.8 
 54.4 
 52.0 
 46.6 
 42.4 
 
 18.4 
 17.4 
 17.2 
 18.4 
 26.5 
 
 20.0 
 14.8 
 13.4 
 18.0 
 14.0 
 
 35.8 
 53.8 
 42.1 
 41.8 
 26.0 
 24.0 
 
 40.0 
 27.0 
 22.0 
 35.5 
 34.5 
 
 44.8 
 29.5 
 23.8 
 4S.4 
 29.2 
 
 23.5 
 33.0 
 27.5 
 19.6 
 16.8 
 
 27.8 
 24.2 
 23.8 
 19.8 
 19.0 
 
 20.2 
 18.4 
 15.4 
 39.5 
 32.2 
 
 24.2 
 27.0 
 27.8 
 32.5 
 20.8 
 18.0 
 
 43.3 
 30.8 
 30.2 
 32.5 
 23.2 
 
 20.0 
 46.0 
 29.0 
 20.2 
 17.6 
 
 20.5 
 21.5 
 17.6 
 37.5 
 28.0 
 31.8 
 
 15.0 
 15.2 
 13.6 
 12.4 
 12.8 
 
 12.0 
 11.4 
 10.8 
 12.2 
 10.4 
 
 10.4 
 9.9 
 9.0 
 
 10.8 
 47.5 
 
 29.0 
 22.0 
 23.0 
 9.9 
 20.8 
 
 57.4 
 56.8 
 54.7 
 51.7 
 46.0 
 
 46.0 
 
 58.0 
 58.0 
 52.0 
 55.0 
 47.8 
 
 55.6 
 55.0 
 56.2 
 53.2 
 51.7 
 
 49.6 
 50.5 
 37.5 
 
 44.2 
 46.0 
 
 47.2 
 38.2 
 35.5 
 28.5 
 31.2 
 
 33.8 
 
 17 
 
 24.5 
 
 18 
 
 46.6 
 
 19 .". 
 
 55.0 
 
 20 
 
 48.4 
 
 21 
 
 52.6 
 
 22 
 
 55.6 
 
 23 
 
 58.6 
 
 24 
 
 49.9 
 
 25 
 
 50.8 
 
 26 
 
 53.5 
 
 27 
 
 52.3 
 
 28 
 
 52.0 
 
 29 
 
 47.8 
 
 
 46.6 
 
 31 
 
 40.3 
 
 
 
 Monthly discharge ofSpreckels ditch at station No. 5, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July... 
 
 August 
 
 September 
 
 October 
 
 November..... 
 December 
 
 The year 
 
 36.0 
 57.4 
 58.6 
 58.9 
 56.2 
 50.2 
 52.0 
 52.0 
 55.0 
 58.0 
 72.8 
 71.0 
 
 72.1 
 
 31.0 
 
 42.4 
 
 13.4 
 
 12.0 
 
 15.4 
 
 11.4 
 
 9.0 
 
 9.9 
 
 25.0 
 
 8.1 
 
 15.7 
 28.3 
 49.2 
 52.3 
 31.8 
 28.1 
 31.5 
 27.3 
 23.9 
 34.2 
 44.2 
 37.7 
 
 33.7 
 
 965 
 1,630 
 3,030 
 3,110 
 1,960 
 1,670 
 1,940 
 1,680 
 1,420 
 2,100 
 2,630 
 2,320 
 
 24,500 
 
 SPRECKELS DITCH AT STATION NO. 6, NEAR HTTELO, MAUI. 
 
 Location. — About 4 miles by trail southeast of Huelo post office and about 100 feet 
 
 below Kolea Stream intake. 
 Records available. — November 4, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, usually about 4 p. m.; datum unchanged. 
 Discharge measurements. — Made from log at gage. 
 Channel. — Permanent . 
 Accuracy. — Records good. 
 Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 
 
 Discharge measurements of JSprechels ditch at station No. 6 near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 22 
 
 J. B . Stewart 
 
 Feet. 
 0.92 
 1.49 
 1.19 
 
 Sec. -ft 
 21.4 
 
 Nov. 7 
 
 do 
 
 49.0 
 
 Dec. 20 
 
 C. T. Bailey 
 
 38.8 
 
 
 
 
182 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily gage height, in feet, of JSpreckels ditch at station No. 6, near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.46 
 
 1.47 
 1.45 
 1.45 
 1.42 
 
 1.40 
 1.40 
 1.40 
 1.40 
 1.38 
 
 1.20 
 
 1.17 
 1.10 
 1.07 
 1.01 
 
 .99 
 .97 
 .95 
 .90 
 
 .88 
 
 .80 
 
 .78 
 
 .74 
 
 1.34 
 
 1.00 
 
 .76 
 .72 
 .70 
 .68 
 .64 
 .65 
 
 0.65 
 .61 
 .70 
 .65 
 .61 
 
 .58 
 
 .55 
 
 1.20 
 
 1.42 
 
 .80 
 
 .99 
 
 .83 
 
 1.41 
 
 1.53 
 
 1.10 
 
 .90 
 
 .85 
 
 .79 
 
 1.62 
 
 1.48 
 
 1.34 
 1.30 
 1.45 
 1.43 
 1.43 
 
 1.44 
 1.48 
 1.45 
 1.42 
 
 1.42 
 1.44 
 1.43 
 1.43 
 1.42 
 
 1.42 
 1.42 
 1.42 
 1.43 
 1.44 
 
 1.49 
 1.50 
 1.48 
 1.43 
 1.52 
 
 1.52 
 1.53 
 1.21 
 1.30 
 1.59 
 
 1.58 
 1.57 
 1.57 
 1.56 
 1.55 
 
 1.60 
 1.58 
 1.45 
 1.44 
 1.53 
 1.52 
 
 1.59 
 1.59 
 1.62 
 1.68 
 1.42 
 
 1.42 
 1.40 
 1.43 
 1.50 
 1.50 
 
 1.49 
 1.52 
 1.52 
 1.52 
 1.50 
 
 1.50 
 1.49 
 1.48 
 1.48 
 1.50 
 
 1.49 
 1.49 
 1.48 
 1.50 
 1.50 
 
 1.51 
 1.50 
 1.50 
 1.49 
 1.48 
 
 1.50 
 1.50 
 1.51 
 1.55 
 1.53 
 
 1.51 
 1.54 
 1.60 
 1.59 
 1.59 
 
 1.58 
 1.58 
 1.57 
 1.55 
 1.50 
 
 1.38 
 1.34 
 1.26 
 1.34 
 1.61 
 
 1.33 
 1.12 
 1.08 
 1.32 
 1.13 
 
 1.60 
 1.60 
 1.62 
 1.60 
 1.50 
 1.41 
 
 1.35 
 1.31 
 1.20 
 1.10 
 1.00 
 
 .92 
 1.00 
 1.39 
 1.41 
 1.45 
 
 1.55 
 1.51 
 1.50 
 1.49 
 1.40 
 
 1.49 
 1.48 
 1.31 
 1.50 
 1.45 
 
 1.50 
 1.50 
 1.45 
 1.60 
 1.50 
 
 1.44 
 1.52 
 1.42 
 1.29 
 1.15 
 
 1.45 
 1.55 
 1.60 
 1.55 
 1.55 
 
 1.45 
 1.45 
 1.54 
 1.55 
 1.55 
 
 1.56 
 1.55 
 1.55 
 1.59 
 1.56 
 
 1.55 
 1.50 
 1.38 
 1.25 
 1.22 
 
 1.21 
 1.12 
 1.03 
 1.50 
 1.55 
 
 1.40 
 1.55 
 1.48 
 1.55 
 1.29 
 1.18 
 
 1.00 
 .98 
 
 1.12 
 .93 
 .90 
 
 .85 
 
 .90- 
 
 .81 
 
 1.54 
 
 1.54 
 
 1.52 
 1.52 
 1.51 
 1.56 
 1.54 
 
 1.51 
 1.49 
 1.46 
 1.46 
 1.40 
 
 1.31 
 1.50 
 1.49 
 1.30 
 1.18 
 
 1.45 
 1.40 
 1.10 
 1.50 
 1.45 
 1.45 
 
 1.46 
 1.50 
 1.50 
 1.50 
 1.50 
 
 1.52 
 1.55 
 1.51 
 1.50 
 1.50 
 
 1.48 
 1.45 
 1.39 
 1.27 
 1.19 
 
 1.10 
 1.10 
 1.02 
 1.00 
 1.04 
 
 .95 
 
 .89 
 .85 
 .82 
 .78 
 
 .77 
 74 
 .69 
 .70 
 1.50 
 
 1.48 
 1.50 
 1.47 
 1.48 
 .97 
 
 .90 
 
 .93 
 
 .90 
 
 1.43 
 
 1.10 
 
 .90 
 1.39 
 1.42 
 1.57 
 1.50 
 
 1.58 
 1.38 
 1.27 
 1.00 
 1.31 
 
 1.60 
 1.60 
 1.60 
 1.54 
 1.53 
 
 1.55 
 1.60 
 1.60 
 1.58 
 1.59 
 1.48 
 
 1.58 
 1.59 
 1.59 
 1.58 
 1.52 
 
 1.50 
 1.49 
 1.50 
 1.50 
 1.60 
 
 1.58 
 1.53 
 1.50 
 1.50 
 1.55 
 
 1.58 
 1.58 
 1.60 
 1.59 
 1.58 
 
 1.60 
 1.60 
 1.59 
 1.59 
 1.60 
 
 1.59 
 1.59 
 1.59 
 1.58 
 1.60 
 
 1.60 
 
 2 
 
 .75 
 
 3 
 
 .27 
 
 4 
 
 .22 
 
 5 
 
 .25 
 
 6 
 
 .29 
 
 7... 
 
 .22 
 
 8 
 
 .15 
 
 9 
 
 .14 
 
 10 
 
 .13 
 
 11 
 
 .40 
 
 12 
 
 .82 
 
 13 
 
 .89 
 
 14 
 
 .55 
 
 15 
 
 .54 
 
 16 
 
 .90 
 
 17 
 
 .89 
 
 18.. 
 
 .90 
 
 19 
 
 1.00 
 
 20 
 
 1.19 
 
 21. 
 
 1.29 
 
 22 
 
 1.24 
 
 23 
 
 1.30 
 
 24 
 
 1.22 
 
 25 
 
 1.21 
 
 26 
 
 1.27 
 
 27 
 
 1.25 
 
 28 
 
 1.25 
 
 29 
 
 1.23 
 
 30 
 
 1.22 
 
 31 
 
 1.21 
 
 
 
 Daily discharge, in second-feet, of Sprechels ditch at station No. 6, near Huelo, Maui, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 2 
 3. 
 4 
 5, 
 
 6 
 
 7 
 
 8, 
 
 9 
 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 48.0 
 48.5 
 47.5 
 47.5 
 46.0 
 
 45.0 
 45.0 
 45.0 
 45.0 
 44.0 
 
 35.0 
 33.8 
 31.0 
 29.8 
 27.4 
 
 26.7 
 26.1 
 25.5 
 24.0 
 23.4 
 
 21.0 
 20.4 
 19.2 
 42.0 
 27.0 
 
 19.8 
 18.6 
 18.0 
 17.4 
 16.2 
 16.5 
 
 16.5 
 15.3 
 18.0 
 16.5 
 15.3 
 
 14.5 
 
 13.8 
 35.0 
 46.0 
 21.0 
 
 26.7 
 21.9 
 45.5 
 51.5 
 31.0 
 
 24.0 
 22.5 
 20.7 
 56.0 
 49.0 
 
 42.0 
 40.0 
 47.5 
 46.5 
 46.5 
 
 47.0 
 49.0 
 47.5 
 46.0 
 
 46.0 
 47.0 
 46.5 
 46.5 
 46.0 
 
 46.0 
 46.0 
 46.0 
 46.5 
 47.0 
 
 49.5 
 50.0 
 49.0 
 46.5 
 51.0 
 
 51.0 
 51.5 
 35.5 
 40.0 
 54.5 
 
 54.0 
 53.5 
 53.5 
 53.0 
 52.5 
 
 55.0 
 54.0 
 47.5 
 •47.0 
 51.5 
 51.0 
 
 54.5 
 54.5 
 56.0 
 59.0 
 46.0 
 
 46.0 
 45.0 
 46.5 
 50.0 
 50.0 
 
 49.5 
 51.0 
 51.0 
 51.0 
 50.0 
 
 50.0 
 49.5 
 49.0 
 49.0 
 50.0 
 
 49.5 
 49.5 
 49.0 
 50.0 
 50.0 
 
 50.5 
 50.0 
 50.0 
 49.5 
 49.0 
 
 50.0 
 50.0 
 50.5 
 52.5 
 51.5 
 
 50.5 
 52.0 
 55.0 
 54.5 
 54.5 
 
 54.0 
 54.0 
 53.5 
 52.5 
 50.0 
 
 44.0 
 42.0 
 38.0 
 42.0 
 55.5 
 
 41.5 
 31.8 
 30.2 
 41.0 
 32.2 
 
 55.0 
 55.0 
 56.0 
 55.0 
 50.0 
 45.5 
 
 42.5 
 40.5 
 35.0 
 31.0 
 27.0 
 
 24.6 
 27.0 
 44.5 
 45.5 
 47.5 
 
 52.5 
 50.5 
 50.0 
 49.5 
 45.0 
 
 49.5 
 49.0 
 40.5 
 50.0 
 47.5 
 
 50.0 
 50.0 
 47.5 
 55.0 
 50.0 
 
 47.0 
 51.0 
 46.0 
 39.5 
 33.0 
 
 47.5 
 52.5 
 55.0 
 52.5 
 52.5 
 
 47.5 
 47.5 
 52.0 
 52.5 
 52.5 
 
 53.0 
 52.5 
 52.5 
 54.5 
 53.0 
 
 52.5 
 50.0 
 44.0 
 37.5 
 36.0 
 
 35.5 
 31.8 
 28.2 
 50.0 
 52.5 
 
 45.0 
 52.5 
 49.0 
 52.5 
 39.5 
 34.2 
 
 27.0 
 26.4 
 31.8 
 24.9 
 24.0 
 
 22.5 
 24.0 
 21.3 
 52.0 
 52.0 
 
 51.0 
 51.0 
 50.5 
 53.0 
 52.0 
 
 50.5 
 49.5 
 48.0 
 48.0 
 45.0 
 
 40.5 
 50.0 
 49.5 
 40.0 
 34.2 
 
 47.5 
 45.0 
 31.0 
 50.0 
 47.5 
 47.5 
 
 48.0 
 50.0 
 50.0 
 50.0 
 50.0 
 
 51.0 
 52.5 
 50.5 
 50.0 
 50.0 
 
 49.0 
 47.5 
 44.5 
 38.5 
 34.6 
 
 31.0 
 31.0 
 
 27.8 
 27.0 
 28.6 
 
 25.5 
 23.7 
 22.5 
 21.6 
 20.4 
 
 20.1 
 19.2 
 17.7 
 18.0 
 50.0 
 
 49.0 
 50.0 
 48.5 
 49.0 
 26.1 
 
 24.0 
 24.9 
 24.0 
 46.5 
 31.0 
 
 24.0 
 44.5 
 46.0 
 53.5 
 50.0 
 
 54.0 
 44.0 
 38.5 
 27.0 
 40.5 
 
 55.0 
 55.0 
 55.0 
 52.0 
 51.5 
 
 52.5 
 55.0 
 55.0 
 54.0 
 54.5 
 49.0 
 
 54.0 
 54.5 
 54.5 
 54.0 
 51.0 
 
 50.0 
 49.5 
 50.0 
 50.0 
 55.0 
 
 54.0 
 51.5 
 50.0 
 50.0 
 52.5 
 
 54.0 
 54.0 
 55.0 
 54.5 
 54.0 
 
 55.0 
 55.0 
 54.5 
 54.5 
 55.0 
 
 54.5 
 54.5 
 54.5 
 54.0 
 55.0 
 
 55.0 
 19.5 
 7.4 
 6.4 
 7.0 
 
 7.8 
 6.4 
 5.5 
 5.4 
 5.3 
 
 10.0 
 21.6 
 23.7 
 13.8 
 13.5 
 
 24.0 
 23.7 
 24.0 
 27.0 
 34.6 
 
 39.5 
 37.0 
 40.0 
 36.0 
 35.5 
 
 38.5 
 37.5 
 37.5 
 36.5 
 36.0 
 35.5 
 
ISLAND OF MAUI. 183 
 
 Monthly discharge of Spreckels ditch at station No. 6, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 48.5 
 56.0 
 55.0 
 59.0 
 56.0 
 55.0 
 55.0 
 53.0 
 52.5 
 55.0 
 55.0 
 55.0 
 
 59.0 
 
 16.2 
 13.8 
 35.5 
 45.0 
 30.2 
 24.6 
 28.2 
 21.3 
 17.7 
 24.0 
 49.5 
 5.3 
 
 5.3 
 
 31.6 
 33.5 
 48.9 
 50.2 
 48.4 
 43.9 
 47.4 
 41.5 
 36.7 
 44.6 
 53.3 
 24.2 
 
 42.0 
 
 1,940 
 1,930 
 3,010 
 2,990 
 2,980 
 2,610 
 2,910 
 2,550 
 2,180 
 2,740 
 3,170 
 1,490 
 
 30,500 
 
 SPRECKELS DITCH AT STATION NO. 7, NEAR HUELO, MATJT. 
 
 Location. — About If miles by trail east of Huelo post office, between Oopuola and 
 
 Pa streams. ' 
 Records available.— November 6, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, at irregular hours; datum unchanged. 
 Channel. — Permanent . 
 
 Discharge measurements. — Made from log at gage. 
 Accuracy. — Fair . 
 Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 
 
 Discharge measurements of Spreckels ditch at station No. 7 near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 22 
 Nov. 8 
 
 J . B . Stewart 
 
 Feet. 
 1.15 
 1.85 
 1.45 
 
 Sec-ft. 
 23.8 
 
 ...do 
 
 54.6 
 
 Dec. 21 
 
 C. T. Bailey 
 
 35.6 
 
 
 
 
 Daily gage height, in feet, of Spreckels ditch at station No. 7, near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 1.80 
 1.95 
 
 1.65 
 1.75 
 1.80 
 1.90 
 1.80 
 
 1.80 
 
 "i.'so" 
 
 1.75 
 1.80 
 
 1.80 
 1.80 
 1.80 
 
 *"i.'85" 
 
 1.85- 
 
 1.60 
 1.70 
 1.65 
 1.80 
 
 1.70 
 1.70 
 
 "2. 20* 
 
 1.70 
 
 "1.65* 
 
 1.65 
 1.60 
 
 1.55 
 1.50 
 1.45 
 
 "i.'65* 
 
 1.60 
 
 "T 55* 
 1.35 
 1.35 
 
 1.30 
 1.20 
 1.40 
 
 "i.'so" 
 
 1.70 
 1.70 
 1.70 
 1.70 
 1.70 
 
 "i.*65" 
 1.60 
 1.85 
 1.60 
 
 1.60 
 1.75 
 1.60 
 
 1.30 
 1.25 
 1.30 
 
 "l95* 
 1.90 
 1.85 
 1.85 
 
 1.70 
 1.80 
 
 *"i.*65" 
 1.60 
 
 1.60 
 1.60 
 1.55 
 1.55 
 
 1.50 
 1.45 
 1.55 
 1.20 
 1.20 
 
 1.80 
 1.90 
 1.70 
 1.40 
 1.30 
 
 "i."30" 
 1.12 
 1.40 
 1.32 
 
 1.20 
 1.90 
 
 "i.'ro" 
 
 1.90 
 
 1.70 
 1.60 
 1.60 
 1.50 
 
 1.80 
 1.80 
 
 "i.'so" 
 
 1.70 
 1.70 
 1.70 
 2.00 
 
 1.75 
 1.70 
 1.65 
 1.65 
 1.60 
 
 1.75 
 
 "i*90" 
 1.90 
 1.90 
 
 
 2 
 
 
 
 2.00 
 
 3 
 
 1.10 
 1.10 
 1.05 
 
 1.10 
 
 
 1.60 
 
 4 
 
 
 1.75 
 1.75 
 
 1.75 
 1.75 
 1.75 
 1.80 
 
 1.50 
 
 5 
 
 "i.'60" 
 1.80 
 1.70 
 
 1.75 
 1.75 
 1.60 
 
 "*L65* 
 
 1.60 
 1.55 
 1.50 
 1.50 
 L 1.50 
 
 1.20 
 
 1.05 
 1.20 
 1.05 
 1.80 
 1.75 
 
 "i.'so" 
 
 1.85 
 1.80 
 1.70 
 
 1.80 
 1.70 
 
 "i.'so" 
 
 1.60 
 
 .70 
 
 6 
 
 .70 
 
 7. 
 
 .80 
 
 8.. 
 
 
 
 
 9 
 
 1.10 
 1.00 
 
 .95 
 .95 
 .95 
 
 
 .45 
 
 10 
 
 .45 
 
 11 
 
 
 1.85 
 1.85 
 1.85 
 1.85 
 1.80 
 
 1.80 
 
 .35 
 
 12 
 
 .35 
 
 13 
 
 .40 
 
 14 
 
 .40 
 
 15 
 
 .95 
 
 .90 
 .95 
 .95 
 .95 
 1.00 
 
 "i.'is" 
 
 "i.'40* 
 2.25 
 
 .50 
 
 16 
 
 
 17 
 
 .50 
 
 18 
 
 1.85 
 1.75 
 1.75 
 
 *"i."75" 
 1.80 
 
 .55 
 
 19 
 
 1.60 
 
 20.... 
 
 1.30 
 
184 
 
 WATEB KESOUBCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Sprechels ditch at station No. 7, near Huelo, Maui, for 
 
 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dee. 
 
 21... 
 
 
 2.00 
 1.95 
 1.85 
 1.80 
 
 1.70 
 1.65 
 1.05 
 
 "i."7o" 
 
 1.75 
 
 "'i."65" 
 1.70 
 1.75 
 
 "i."7o' 
 
 1.70 
 1.70 
 1.75 
 
 1.80 
 1.80 
 
 "i."75" 
 
 1.60 
 1.45 
 1.40 
 1.65 
 1.40 
 
 "Do" 
 
 1.80 
 1.75 
 1.65 
 1.60 
 
 1.85 
 1.65 
 
 "i.*95" 
 1.65 
 
 1.65 
 1.60 
 1.65 
 1.50 
 
 "T40* 
 1.40 
 1.70 
 1.75 
 
 1.60 
 1.70 
 
 ""i.*65" 
 1.60 
 1.35 
 
 1.55 
 1.80 
 1.75 
 1.60 
 
 1.40 
 1.55 
 1.50 
 1.60 
 1.55 
 1.55 
 
 1.20 
 
 ""i.'io" 
 
 1.10 
 1.05 
 
 1.10 
 1.00 
 1.00 
 
 "i'.Yo 
 
 1.70 
 1.90 
 1.90 
 1.80 
 1.80 
 
 1.70 
 
 "T96" 
 l.S'O 
 1.80 
 
 1.95 
 
 1.85 
 1.85 
 
 "2. 46' 
 
 2.40 
 1.80 
 1.70 
 1.70 
 1.70 
 
 1.25 
 
 22 
 
 1.00 
 .95 
 
 
 23 
 
 1.25 
 
 24 
 
 1.73 
 
 25 
 
 
 
 26 
 
 
 1.65 
 1.90 
 1.85 
 1.85 
 
 1.50 
 
 27 
 
 
 1.50 
 
 28 
 
 
 1.22 
 
 29 
 
 
 
 30 
 
 
 .72 
 
 31 
 
 
 
 .70 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, of Sprechels ditch at station No. 7, near Huelo, Maui, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 23.0 
 23.0 
 23.0 
 23.0 
 21.5 
 
 23.0 
 23.0 
 23.0 
 23.0 
 20.0 
 
 18.5 
 18.5 
 18.5 
 18.5 
 18.5 
 
 17.0 
 18.5 
 18.5 
 18.5 
 20.0 
 
 20.0 
 20.0 
 18.5 
 
 "25.6" 
 
 30.0 
 35.0 
 77.0 
 
 62.0 
 59.5 
 54.5 
 52. 
 48.5 
 
 45.0 
 57.0 
 54.5 
 54.5 
 
 52.0 
 59.5 
 54.5 
 49.5 
 49.5 
 
 49.5 
 49.5 
 49.5 
 52.0 
 53.2 
 
 54.5 
 54.5 
 54.5 
 54.5 
 52.0 
 
 52.0 
 53.2 
 54.5 
 49.5 
 49.5 
 
 47.0 
 45.0 
 21.5 
 34.3 
 47.0 
 
 49.5 
 
 47.2 
 45.0 
 47.0 
 49.5 
 47.2 
 
 45.0 
 49.5 
 52.0 
 57.0 
 52.0 
 
 52.0 
 52.0 
 52.0 
 49.5 
 52.0 
 
 52.0 
 52.0 
 52.0 
 53.2 
 54.5 
 
 54.5 
 52.9 
 51.2 
 49.5 
 52.0 
 
 49.5 
 47.0 
 47.0 
 47. 
 49.5 
 
 52.0 
 52.0 
 50.7 
 49.5 
 46.3 
 
 43.0 
 47.0 
 45.0 
 52.0 
 49.5 
 
 47.0 
 47.0 
 60.5 
 74.0 
 60.5 
 
 47.0 
 46.0 
 45.0 
 45.0 
 43.0 
 
 41.0 
 39.0 
 37.0 
 41.0 
 45.0 
 
 43.0 
 37.0 
 35.0 
 45.0 
 35.0 
 
 43.5 
 
 52.0 
 52.0 
 49.5 
 45.0 
 43.0 
 
 43.0 
 42.0 
 41.0 
 33.0 
 33.0 
 
 31.0 
 27.0 
 35.0 
 43.5 
 52.0 
 
 47.0 
 47.0 
 47.0 
 47. 
 47.0 
 
 46.0 
 45.0 
 43.0 
 54.5 
 43.0 
 
 54.5 
 45.0 
 52.2 
 59.5 
 45.0 
 
 45.0 
 43.0 
 45.0 
 39.0 
 41.0 
 
 43.0 
 49.5 
 43.0 
 43.0 
 43.0 
 
 43.0 
 43.0 
 43.0 
 52.0 
 47.0 
 
 49.5 
 49.5 
 43.0 
 44.0 
 45.0 
 
 43.0 
 41.0 
 39.0 
 39.0 
 39.0 
 
 37.0 
 35.0 
 35.0 
 47.0 
 49.5 
 
 43.0 
 47.0 
 46.0 
 45.0 
 43.0 
 33.0 
 
 31.0 
 29.0 
 31.0 
 29.0 
 27.0 
 
 21.5 
 
 27.0 
 21.5 
 52.0 
 49.5 
 
 50.7 
 52.0 
 54.5 
 52.0 
 47.0 
 
 52.0 
 47.0 
 49.5 
 52.0 
 43.0 
 
 41.0 
 52.0 
 49.5 
 43.0 
 39.0 
 
 35.0 
 41.0 
 39.0 
 43.0 
 41.0 
 41.0 
 
 50.2 
 59.5 
 57.0 
 54.5 
 54.5 
 
 47.0 
 52.0 
 48.5 
 45.0 
 43.0 
 
 43.0 
 43.0 
 41.0 
 41.0 
 40.0 
 
 39.0 
 37.0 
 41.0 
 27.0 
 27.0 
 
 27.0 
 25.0 
 23.0 
 23.0 
 21.5 
 
 23.0 
 20.0 
 20.0 
 33.5 
 47.0 
 
 52.0 
 57.0 
 47.0 
 35.0 
 31.0 
 
 31.0 
 31.0 
 23.8 
 35.0 
 31.8 
 
 27.0 
 57.0 
 52.0 
 47.0 
 57.0 
 
 47.0 
 43.0 
 43.0 
 39.0 
 43.0 
 
 47.0 
 57.0 
 57.0 
 52.0 
 52.0 
 
 47. Q 
 52.0 
 57.0 
 52.0 
 52.0 
 52.0 
 
 52.0 
 52.0 
 52.0 
 52.0 
 49.5 
 
 47.0 
 47.0 
 47.0 
 62.0 
 55.7 
 
 49.5 
 47.0 
 45.0 
 45.0 
 43.0 
 
 49.5 
 53.8 
 57.0 
 57.0 
 57.0 
 
 59.5 
 54.5 
 54.5 
 70.2 
 86.0 
 
 86.0 
 52.0 
 47.0 
 47.0 
 47.0 
 
 54.5 
 
 2 .' 
 
 62.0 
 
 3 
 
 43.0 
 
 4 
 
 39.0 
 
 5 
 
 12.0 
 
 6 
 
 12.0 
 
 7 
 
 14.0 
 
 8 
 
 10.5 
 
 9 
 
 7.0 
 
 10 
 
 7.0 
 
 11... ■ 
 
 5.0 
 
 12 
 
 5.0 
 
 13 
 
 6.0 
 
 14 
 
 6.0 
 
 15 
 
 8.0 
 
 16 
 
 8.0 
 
 17 
 
 8.0 
 
 18 
 
 9.0 
 
 19 
 
 43.0 
 
 20 
 
 31.0 
 
 21 
 
 29.0 
 
 22 
 
 29.0 
 
 23 
 
 29.0 
 
 24 
 
 48.5 
 
 25 
 
 
 43.7 
 
 26.... 
 
 
 39.0 
 
 27 
 
 
 39.0 
 
 28 
 
 
 27.8 
 
 29 
 
 
 20.1 
 
 30 
 
 
 12.4 
 
 31 
 
 
 
 12.0 
 
 
 
 
 
 Note. — Discharge interpolated for days for which gage heights are missing. 
 
 Monthly discharge of Sprechels ditch at station No. 7, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January (1-23) .. 
 February (17-29) 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 59.5 
 57.0 
 74.0 
 59.5 
 52.0 
 54.5 
 59.5 
 57.0 
 86.0 
 62.0 
 
 21.5 
 45.0 
 35.0 
 27.0 
 33.0 
 21.5 
 20.0 
 23.8 
 43.0 
 5.0 
 
 20.4 
 50.3 
 49.3 
 50.9 
 46.3 
 43.9 
 43.3 
 41.4 
 38.4 
 45.4 
 54.1 
 23.2 
 
 930 
 1,300 
 3,030 
 3,030 
 2,850 
 2,610 
 2,660 
 2,550 
 2,280 
 2,790 
 3,220 
 1,430 
 
 The period. 
 
 28,700 
 
ISLAND OF MAUI. 
 
 185 
 
 SPRECKELS DITCH AT STATION NO. 8, NEAR HTTELO, MATTI. 
 
 Location. — About 1 mile by trail east of Huelo post office and 275 feet above gate 
 
 to storage reservoir. 
 Records available. — November 4, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, at irregular hours; datum unchanged. 
 Channel. — Permanent. 
 
 Discharge measurements. — Made from plank. 
 Accuracy. — Good. 
 Cooperation. — East Maui Ditch Co. assists in securing gage heights. 
 
 Discharge measurements of Spreckels ditch at station No. 8, near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 21 
 Dec. 25 
 
 J. B. Stewart 
 
 Feet. 
 1.58 
 1.56 
 
 Sec.-ft. 
 26.4 
 
 C. T. Bailey 
 
 27.5 
 
 
 
 
 Daily gage height, in feet, of Spreckels ditch at station No. 8, near Huelo, Maui, for 1912. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 2.20 
 2.40 
 
 2.25 
 
 2.40 
 2.40 
 2.55 
 2.40 
 
 2.35 
 
 "2."30' 
 2.25 
 2.30 
 
 2.30 
 
 2.35 
 2.30 
 
 "*2,"40" 
 
 2.40 
 
 2.10 
 
 2.20 
 2.15 
 2.20 
 
 2.20 
 2.15 
 
 1.90 
 
 "i.85" 
 
 1.65 
 1.65 
 
 1.60 
 1.60 
 1.80 
 
 2.00 
 2.25 
 2.10 
 
 1.70 
 1.65 
 1.70 
 
 "2. 50* 
 2.25 
 2.40 
 2.10 
 
 2.10 
 2.20 
 
 "2. l6" 
 2.05 
 
 2.05 
 2.04 
 1.95 
 1.95 
 
 1.90 
 1.85 
 1.70 
 1.65 
 1.70 
 
 1.70 
 
 "'i.'so" 
 
 1.50 
 1.45 
 
 1.50 
 1.40 
 1.40 
 
 "2."i6" 
 
 2.20 
 2.40 
 2.20 
 1.70 
 1.62 
 
 "i."62* 
 1.60 
 1.80 
 1.70 
 
 1.60 
 
 2.40 
 
 "2. i6' 
 2.40 
 
 2.10 
 2.10 
 2.00 
 2.00 
 
 2.30 
 2.50 
 2.50 
 2.30 
 2.20 
 
 2.00 
 
 '*2.' 56' 
 2.50 
 2.40 
 2.30 
 
 2.20 
 2.20 
 
 "2. 20* 
 
 2.10 
 
 2.10 
 2.10 
 2.60 
 
 2.20 
 2.15 
 2.10 
 2.10 
 2.05 
 
 2.20 
 
 "2.56" 
 
 2.40 
 2.40 
 
 2.45 
 2.30 
 2.35 
 
 " : L90' 
 
 1.90 
 2.25 
 2.20 
 2.20 
 2.20 
 
 
 2 . ... 
 
 
 2.10 
 
 3 
 
 
 2.00 
 
 4 
 
 
 2.25 
 2.25 
 
 2.25 
 2.30 
 2.20 
 2.30 
 
 1.30 
 
 5 
 
 
 "2." 66' 
 
 2.20 
 2.10 
 
 2.10 
 2.10 
 
 1.85 
 2.10 
 2.10 
 
 2.10 
 2.05 
 2.00 
 1.90 
 1.90 
 
 "I.'so* 
 
 1.80 
 2.30 
 1.90 
 
 2.00 
 2.10 
 
 "2. 16' 
 2.05 
 1.75 
 
 1.60 
 
 1.50 
 1.C0 
 1.50 
 2.20 
 2:15 
 
 "2." 26" 
 2.35 
 2.20 
 2.10 
 
 2.20 
 2.10 
 2.05 
 2.20 
 2.00 
 
 1.95 
 2.20 
 2.15 
 2.00 
 
 1.90 
 1.95 
 1.75 
 2.05 
 2.00 
 2.10 
 
 1.30 
 
 6 
 
 
 1.40 
 
 7 
 
 
 2.50 
 
 8 
 
 
 
 9 
 
 
 .70 
 
 10 
 
 
 2.10 
 
 2.10 
 
 "2. 05' 
 1.95 
 1.95 
 
 1.90 
 1.90 
 1.90 
 
 "i.96" 
 
 2.10 
 1.90 
 1.70 
 2.10 
 1.70 
 
 "2*20" 
 2.25 
 2.20 
 2.10 
 2.05 
 
 2.30 
 
 1.20 
 2.10 
 2.10 
 2.10 
 2.10 
 
 "2. 66" 
 
 1.85 
 2.10 
 1.95 
 
 2.10 
 1.95 
 
 "2. 35" 
 1.95 
 
 1.95 
 1.95 
 2.10 
 1.90 
 
 .70 
 
 11 
 
 
 2.40 
 2.40 
 2.40 
 2.35 
 2.30 
 
 2.30 
 
 .50 
 
 12.... . 
 
 
 -50 
 
 13 ... . 
 
 
 .65 
 
 14 
 
 
 .65 
 
 15 
 
 
 .80 
 
 16 
 
 
 
 17 
 
 1.50 
 
 .80 
 
 18 . 
 
 2.40 
 2.25 
 2.25 
 
 2.20 
 2.15 
 2.15 
 
 ' "2."20' 
 
 2.25 
 2.25 
 2.10 
 2.20 
 2.25 
 
 "*2."25" 
 2.30 
 
 "*2.'20' 
 2.20 
 2.20 
 2.20 
 
 2.25 
 2.25 
 
 "2.15" 
 
 2.10 
 
 .90 
 
 19 
 
 1.80 
 2.40 
 
 2.45 
 2.35 
 2.30 
 2.30 
 
 2.10 
 
 20 
 
 2.00 
 
 21 
 
 1.88 
 
 22 
 
 
 23 
 
 2.70 
 
 24 
 
 1.90 
 
 25 
 
 
 26 
 
 2.10 
 2.40 
 2.30 
 2.30 
 
 1.90 
 
 27 
 
 1.90 
 
 28 
 
 1.62 
 
 29 
 
 
 30 
 
 .92 
 
 31 
 
 
 .90 
 
 
 
 
 
 
186 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, of Sprechels ditch at station No. 8, near Huelo, Maui, 
 
 for 1912. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 50.0 
 58.0 
 55.0 
 52.0 
 52.0 
 
 52.0 
 54.0 
 50.0 
 54.0 
 56.0 
 
 58.0 
 58.0 
 58.0 
 56.0 
 54.0 
 
 54.0 
 56.0 
 58.0 
 52.0 
 52.0 
 
 50.0 
 
 48.0 
 48.0 
 49.0 
 50.0 
 
 52.0 
 52.0 
 46.0 
 50.0 
 52.0 
 52.0 
 
 52.0 
 58.0 
 58.0 
 64.5 
 58.0 
 
 56.0 
 55.0 
 54.0 
 52.0 
 54.0 
 
 54.0 
 56.0 
 54.0 
 56.0 
 58.0 
 
 58.0 
 56.0 
 54.0 
 52.0 
 54.0 
 
 52.0 
 50.0 
 50.0 
 50.0 
 50.0 
 
 52.0 
 52.0 
 50.0 
 48.0 
 46.0 
 
 46.0 
 50.0 
 48.0 
 50.0 
 50.0 
 
 50.0 
 48.0 
 47.3 
 46.6 
 46.0 
 
 46.0 
 45.0 
 44.0 
 40.0 
 40.0 
 
 38.0 
 
 38.0 
 38.0 
 38.0 
 38.0 
 
 46.0 
 38.0 
 31.0 
 46.0 
 31.0 
 
 40.5 
 50.0 
 52.0 
 50.0 
 46.0 
 44.0 
 
 38.0 
 37.0 
 36.0 
 29.5 
 29.5 
 
 28.0 
 28.0 
 34.0 
 44.0 
 54.0 
 
 16.0 
 
 46.0 
 46.0 
 46.0 
 46.0 
 
 44.0 
 
 42.0 
 36.0 
 46.0 
 40.0 
 
 46.0 
 40.0 
 48.0 
 56.0 
 40.0 
 
 40.0 
 40.0 
 46.0 
 38.0 
 40.0 
 
 42.0 
 52.0 
 46.0 
 45.2 
 44.4 
 
 43.6 
 
 42.8 
 42.0 
 50.0 
 46.0 
 
 46.0 
 46.0 
 36.0 
 46.0 
 46.0 
 
 46.0 
 44.0 
 42.0 
 38.0 
 38.0 
 
 36.0 
 34.0 
 34.0 
 54.0 
 38.0 
 
 42.0 
 46.0 
 46.0 
 46.0 
 44.0 
 32.5 
 
 31.0 
 
 29.5 
 31.0 
 29.5 
 28.0 
 
 25.0 
 
 28.0 
 25.0 
 50.0 
 48.0 
 
 49.0 
 50.0 
 56.0 
 50.0 
 46.0 
 
 50.0 
 46.0 
 44.0 
 50.0 
 42.0 
 
 40.0 
 
 50.0 
 48.0 
 42.0 
 40.0 
 
 38.0 
 40.0 
 32.5 
 44.0 
 42.0 
 46.0 
 
 54.0 
 62.0 
 52.0 
 58.0 
 46.0 
 
 46.0 
 50.0 
 48.0 
 46.0 
 44.0 
 
 44.0 
 43.6 
 40.0 
 40.0 
 39.0 
 
 38.0 
 36.0 
 31.0 
 29.5 
 31.0 
 
 31.0 
 
 28.0 
 25.0 
 25.0 
 23.5 
 
 25.0 
 22.0 
 22.0 
 34.0 
 46.0 
 
 50.0 
 58.0 
 50.0 
 31.0 
 28.6 
 
 28.6 
 28.6 
 28.0 
 34.0 
 31.0 
 
 28.0 
 58.0 
 52.0 
 46.0 
 58.0 
 
 46.0 
 46.0 
 42.0 
 42.0 
 48.0 
 
 54.0 
 
 62.0 
 62.0 
 54.0 
 50.0 
 
 42.0 
 52.0 
 62.0 
 62.0 
 58.0 
 54.0 
 
 50.0 
 50.0 
 50.0 
 50.0 
 48.0 
 
 46.0 
 46.0 
 46.0 
 67.0 
 58.5 
 
 50.0 
 48.0 
 46.0 
 46.0 
 44.0 
 
 50.0 
 56.0 
 62.0 
 58.0 
 58.0 
 
 60.0 
 54.0 
 56.0 
 47.0 
 38.0 
 
 38.0 
 52.0 
 50.0 
 50.0 
 50.0 
 
 48.0 
 
 2 
 
 
 46.0 
 
 3 . 
 
 
 42.0 
 
 4 
 
 
 19.0 
 
 5 
 
 
 19.0 
 
 6 '.. 
 
 
 22.0 
 
 7 
 
 
 62.0 
 
 8 
 
 
 34.0 
 
 9 
 
 
 6.0 
 
 10 
 
 
 6.0 
 
 11 
 
 
 4.0 
 
 12 
 
 
 4.0 
 
 13 
 
 
 5.5 
 
 
 
 5.5 
 
 15 
 
 
 8.0 
 
 16 
 
 
 8.0 
 
 
 29.5 
 
 58.0 
 
 60.0 
 56.0 
 54.0 
 54.0 
 50.0 
 
 46.0 
 58.0 
 54.0 
 54.0 
 
 8.0 
 
 18... 
 
 10.0 
 
 
 46.0 
 
 20 
 
 42.0 
 
 21 
 
 37.2 
 
 22 
 
 54.0 
 
 23 . 
 
 72.0 
 
 24 
 
 38.0 
 
 25 
 
 38.0 
 
 26 
 
 38.0 
 
 27 
 
 38.0 
 
 28 
 
 28.6 
 
 29 
 
 19.5 
 
 30 
 
 10.4 
 
 31 
 
 
 10.0 
 
 
 
 
 Monthly discharge of Sprechels ditch at station No. 8, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 Run-ofl 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January... 
 February.. 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September. 
 
 October 
 
 November. 
 December. 
 
 60.0 
 58.0 
 64.5 
 52.0 
 56.0 
 54.0 
 56.0 
 62.0 
 62.0 
 67.0 
 72.0 
 
 25.0 
 46.0 
 46.0 
 31.0 
 16.0 
 32.5 
 25.0 
 22.0 
 28.0 
 38.0 
 4.0 
 
 48.7 
 52.8 
 53.8 
 43.9 
 40.0 
 43.0 
 41.0 
 38.7 
 46.6 
 50.8 
 26.7 
 
 1,250 
 3,250 
 3,200 
 2,700 
 2,380 
 2,640 
 2,520 
 2,300 
 2,870 
 3,020 
 1,640 
 
 The period. 
 
 27,800 
 
 CENTER DITCH REGION. 
 CENTER DITCH NEAR HUELO, MAUI. 
 
 Location. — About 3 miles by trail southeast of Huelo post office and about 1$ miles 
 
 below ditch intake at Puohakamoa Stream. 
 Records available. — January 1, 1910, to December 31, 1912. 
 Gage. — Vertical staff; datum unchanged. 
 Channel. — Probably permanent. 
 
 Discharge measurements. — Made from plank across ditch. 
 Accuracy. — Good . 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
ISLAND OF MAUI. 187 
 
 Discharge measurements of Center ditch near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Mar 11 
 
 
 Inches. 
 23.2 
 49.9 
 
 Sec-ft. 
 39.2 
 
 
 C. T. Bailey 
 
 87.0 
 
 
 
 
 Daily gage height, in inches, of Center ditch near Huelo, Maui, for 1912. 
 [Asada, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2 
 
 21.9 
 25.8 
 20.4 
 15.4 
 16.5 
 
 9.5 
 7.9 
 10.8 
 8.4 
 6.9 
 
 5.0 
 4.1 
 3.5 
 3.0 
 3.0 
 
 3.0 
 3.0 
 3.0 
 3.0 
 3.0 
 
 3.0 
 3.0 
 3.0 
 
 6.2 
 
 4.4 
 
 3.6 
 3.1 
 3.0 
 3.0 
 3.0 
 4.6 
 
 3.8 
 2.9 
 3.0 
 2.9 
 
 2.8 
 
 2.8 
 2.5 
 5.6 
 7.6 
 4.6 
 
 9.4 
 
 8.4 
 
 38.2 
 
 22.4 
 
 11.8 
 
 5.2 
 4.5 
 4.0 
 26.9 
 49.0 
 
 50.0 
 
 48.5 
 46.6 
 38.2 
 36.1 
 
 29.9 
 53.0 
 53.8 
 51.5 
 
 53.5 
 53.5 
 53.5 
 50.8 
 48.0 
 
 48.4 
 50.1 
 48.4 
 49.4 
 50.1 
 
 53.0 
 54.0 
 54.2 
 52.8 
 50.1 
 
 42.2 
 38.6 
 35.5 
 34.0 
 47.5 
 
 40.2 
 31.5 
 26.5 
 25.0 
 21.5 
 
 43.2 
 14.2 
 12.8 
 12.8 
 47.0 
 55.0 
 
 54.5 
 52.5 
 54.2 
 52.0 
 47.0 
 
 51.0 
 54.5 
 54.5 
 54.0 
 53.8 
 
 52.8 
 53.8 
 53.5 
 53.8 
 54.2 
 
 54.2 
 53.8 
 53.2 
 52.0 
 53.0 
 
 53.8 
 52.8 
 46.5 
 45.5 
 52.8 
 
 54.0 
 51.0 
 41.0 
 32.0 
 31.8 
 
 27.5 
 27.0 
 29.8 
 43.5 
 49.8 
 
 41.8 
 27.8 
 39.8 
 24.4 
 19.1 
 
 15.6 
 12.8 
 9.8 
 8.8 
 6.8 
 
 6.0 
 5.6 
 5.4 
 6.5 
 9.0 
 
 7.1 
 5.2 
 4.8 
 7.0 
 5.4 
 
 24.8 
 47.5 
 26.8 
 29.0 
 14.1 
 9.8 
 
 6.0 
 5.5 
 5.1 
 4.6 
 4.2 
 
 4.2 
 4.5 
 6.8 
 6.4 
 31.0 
 
 40.9 
 23.0 
 26.4 
 16.0 
 21.0 
 
 22.2 
 10.0 
 6.5 
 12.6 
 11.0 
 
 28.6 
 12.2 
 6.6 
 35.8 
 14.0 
 
 11.8 
 14.0 
 9.2 
 5.8 
 5.2 
 
 8.1 
 20.0 
 25.5 
 36.6 
 22.5 
 
 11.4 
 9.9 
 21.4 
 47.5 
 27.2 
 
 31.5 
 14.4 
 29.9 
 17.8 
 15.8 
 
 9.4 
 6.2 
 5.8 
 5.4 
 5.1 
 
 6.1 
 5.2 
 4.8 
 23.5 
 9.4 
 
 5.6 
 6.J6 
 
 6.8 
 12.5 
 5.8 
 4.6 
 
 4.1 
 4.0 
 
 4.8 
 4.2 
 3.9 
 
 3.8 
 4.5 
 4.5 
 14.0 
 
 8.2 
 
 32.8 
 21.8 
 16.0 
 28\2 
 45.0 
 
 29.6 
 17.5 
 
 8.9 
 14.6 
 
 5.9 
 
 5.2 
 22.6 
 10.6 
 5.5 
 4.9 
 
 5.4 
 5.6 
 4.8 
 
 17.0 
 8.4 
 
 13.1 
 
 9.1 
 50.9 
 38.6 
 34.4 
 24.1 
 
 28.0 
 45.8 
 27.9 
 17.1 
 13.0 
 
 8.4 
 5.6 
 5.1 
 4.8 
 4.5 
 
 4.5 
 4.5 
 4.5 
 4.5 
 4.5 
 
 4.4 
 4.1 
 3.9 
 3.8 
 3.6 
 
 3.5 
 3.5 
 3.5 
 
 4.4 
 39.1 
 
 13.4 
 
 27.0 
 
 13.9 
 
 4.9 
 
 3.9 
 
 3.2 
 3.0 
 3.0 
 4.9 
 
 6.4 
 
 3.0 
 13.1 
 12.2 
 46.0 
 31.2 
 
 15.2 
 7.4 
 4.1 
 3.8 
 3.4 
 
 52.0 
 
 54.5 
 51.1 
 44.2 
 32.0 
 
 34.1 
 55.0 
 53.1 
 34.1 
 45.1 
 55.0 
 
 41.1 
 33.5 
 45.9 
 30.2 
 21.5 
 
 20.6 
 15.6 
 13.5 
 55.0 
 55.8 
 
 48.1 
 33.9 
 27.0 
 25.2 
 17.8 
 
 55.0 
 55.0 
 55.0 
 50.4 
 47.9 
 
 40.8 
 42.4 
 39.1 
 32.2 
 35.1 
 
 32.9 
 26.6 
 29.0 
 18.4 
 18.5 
 
 41.2 
 54.8 
 
 3 
 
 50.2 
 
 4 
 
 32.4 
 
 5 
 
 29.5 
 
 6 
 
 32.2 
 
 7 
 
 35.2 
 
 8 
 
 34.8 
 
 9 
 
 33.2 
 
 10 
 
 30.4 
 
 11 
 
 30.0 
 
 12 
 
 48.2 
 
 13 
 
 36.8 
 
 14. 
 
 15 
 
 28.2 
 30.6 
 
 16 
 
 38.1 
 
 17 
 
 24.6 
 
 18 
 
 45.5 
 
 19 
 
 50.2 
 
 20 
 
 50.8 
 
 21 
 
 43.0 
 
 22 
 
 56.5 
 
 23 
 
 36.0 
 
 24 
 
 55.5 
 
 25 
 
 53.0 
 
 26 
 
 55.8 
 
 27 
 
 55.5 
 
 28 
 
 54.8 
 
 29 : 
 
 51.4 
 
 30 
 
 49.2 
 
 31 
 
 40.8 
 
 
 
 Note. — Gage read at 6 a. m. and 6 p.m. 
 
 Daily discharge, in second-feet, of Center ditch near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 32.8 
 41.6 
 29.8 
 19.8 
 22.0 
 
 9.2 
 7.1 
 
 10.8 
 7.7 
 5.9 
 
 3.9 
 3.0 
 2.4 
 2.0 
 2.0 
 
 2.7 
 1.9 
 2.0 
 1.9 
 1.8 
 
 1.8 
 1.6 
 4.5 
 6.7 
 3.5 
 
 9.1 
 
 7.7 
 66.4 
 33.8 
 12.6 
 
 93.5 
 93.5 
 93.5 
 89.6 
 85.0 
 
 85.8 
 
 88.2 
 85.8 
 87.4 
 88.2 
 
 93.0 
 94.0 
 94.4 
 92.6 
 
 88.2 
 
 95.0 
 92.0 
 94.4 
 91.0 
 83.0 
 
 90.0 
 95.0 
 95.0 
 94.0 
 93.8 
 
 92.6 
 93.8 
 93.5 
 93.8 
 94.4 
 
 45.0 
 44.0 
 49.6 
 77.0 
 87.8 
 
 73.6 
 45.6 
 69.6 
 38.2 
 27.2 
 
 20.2 
 
 14.6 
 
 ' 9.7 
 
 8.2 
 
 5.8 
 
 4.9 
 4.4 
 4.0 
 3.5 
 3.1 
 
 3.1 
 3.4 
 5.8 
 5.3 
 52.0 
 
 71.8 
 35.0 
 42.8 
 21.0 
 31.0 
 
 7.3 
 29.0 
 41.0 
 63.2 
 34.0 
 
 11.8 
 9.8 
 31.8 
 84.0 
 44.4 
 
 53.0 
 17.8 
 
 49.8 
 24.6 
 20.6 
 
 3.0 
 2.9 
 3.7 
 3.1 
 
 2.8 
 
 2.7 
 3.4 
 3.4 
 17.0 
 7.5 
 
 55.6 
 32.6 
 21.0 
 46.4 
 80.0 
 
 8.6 
 89.8 
 67.2 
 58.8 
 37.3 
 
 46.0 
 
 80.8 
 45.8 
 23.2 
 15.0 
 
 7.7 
 4.5 
 4.0 
 3.7 
 3.4 
 
 15.8 
 
 44.0 
 
 16.8 
 
 3.8 
 
 2.8 
 
 2.2 
 2.0 
 2.0 
 3.8 
 5.3 
 
 2.0 
 15.2 
 13.4 
 81.0 
 52.4 
 
 72.2 
 57.0 
 80.9 
 50.4 
 32.0 
 
 30.2 
 20.2 
 16.0 
 96.0 
 96.8 
 
 85.2 
 57.8 
 44.0 
 40.4 
 24.6 
 
 72.4 
 
 2 
 
 95.6 
 
 3 
 
 88.4 
 
 4 
 
 54.8 
 
 5 
 
 49.0 
 
 6 
 
 54.4 
 
 7 
 
 60.4 
 
 8 
 
 59.6 
 
 9 
 
 56.4 
 
 10 
 
 50.8 
 
 11 
 
 50.0 
 
 12 
 
 85.4 
 
 13 
 
 63.6 
 
 14 
 
 46.4 
 
 15 
 
 51.2 
 
188 
 
 Daily discharge, in second-feet, of Center ditch near Huelo, Maui, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 
 27 
 23 
 29 
 30 
 31 
 
 2.0 
 2.0 
 2.0 
 2.0 
 2.0 
 
 2.0 
 2.0 
 2.0 
 5.1 
 3.3 
 
 2.5 
 2.1 
 2.0 
 2.0 
 2.0 
 3.5 
 
 4.1 
 3.4 
 2.9 
 43.8 
 87.0 
 
 88.0 
 86.0 
 82.2 
 66.4 
 62.2 
 
 49.8 
 93.0 
 93.8 
 90.5 
 
 74.4 
 67.2 
 61.0 
 58.0 
 84.0 
 
 70.4 
 53.0 
 43.0 
 40.0 
 32.0 
 
 76.4 
 17.4 
 14.6 
 14.6 
 83.0 
 96.0 
 
 94.4 
 93.8 
 93.2 
 91.0 
 93.0 
 
 93.8 
 92.6 
 82.0 
 80.5 
 92.6 
 
 94.0 
 90.0 
 72.0 
 54.0 
 53.6 
 
 4.9 
 4.5 
 4.3 
 5.4 
 
 8.5 
 
 6.1 
 4.1 
 3.7 
 6.0 
 4.3 
 
 39.4 
 84.0 
 43.6 
 48.0 
 17-2 
 9.7 
 
 33.4 
 10.0 
 5.4 
 14.2 
 11.0 
 
 47.2 
 13.4 
 5.6 
 61.6 
 17.0 
 
 11.2 
 17.0 
 
 8.8" 
 4.7 
 4.1 
 
 9.1 
 5.1 
 4.7 
 4.3 
 4.0 
 
 5.0 
 4.1 
 3.7 
 36.0 
 9.1 
 
 4.5 
 
 14.0 
 4.7 
 3.5 
 
 49.2 
 
 24.0 
 
 8.4 
 
 18.2 
 4.8 
 
 4.1 
 34.2 
 10.6 
 4.4 
 3.8 
 
 4.3 
 4.5 
 3.7 
 
 23.0 
 
 7.7 
 15.2 
 
 3.4 
 3.4 
 3.4 
 3.4 
 
 3.4 
 
 3.3 
 3.0 
 
 2.8 
 2.7 
 2.5 
 
 2.4 
 2.4 
 2.4 
 3.3 
 
 68.2 
 
 19.4 
 6.5 
 3.0 
 2.7 
 2.4 
 
 91.0 
 95.0 
 90.1 
 
 78.4 
 54.0 
 
 58.2 
 96.0 
 93.1 
 58.2 
 80.1 
 96.0 
 
 96.0 
 96.0 
 96.0 
 
 88.8 
 84.8 
 
 71.6 
 
 74.8 
 68.2 
 54.4 
 60.2 
 
 55.8 
 43.2 
 48.0 
 25.8 
 26.0 
 
 66.2 
 38.8 
 80.5 
 88.4 
 89.6 
 
 93. 
 
 96.5 
 95.6 
 90.4 
 87.2 
 71.6 
 
 Note. — Discharge computed from mean of two gage readings each day. 
 
 Monthly discharge of Center ditch near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 41.6 
 93.8 
 96.0 
 95.0 
 87.8 
 71.8 
 84.0 
 80.0 
 89.8 
 96.0 
 
 2.0 
 
 1.6 
 
 14.6 
 
 53.6 
 
 3.7 
 
 3.1 
 
 3.5 
 
 2.7 
 
 2.4 
 
 2.0 
 
 16.0 
 
 38.8 
 
 7.69 
 34.90 
 72.20 
 88.70 
 29.30 
 18.50 
 20.80 
 16.30 
 20.20 
 38.30 
 59.80 
 73.10 
 
 473 
 2,010 
 4,440 
 5,280 
 1,800 
 1,100 
 1,280 
 1,000 
 1,200 
 2,360 
 3,560 
 4,490 
 
 67.30 
 
 29,000 
 
 HAMAKUA DITCH REGION. 
 NAILIILIHAELE STREAM NEAR HUELO, MATTI. 
 
 Location. — About 2 miles by trail above Huelo post office, 1 mile above Lowrie 
 ditch intake, and 50 feet above trail ford. 
 
 Records available. — July 24 to December 31, 1912. From December 9, 1910, to 
 December 31, 1911, a station was maintained above the New Hamakua ditch 
 intake. 
 
 Gage. — Vertical staff; read twice daily, at 5.30 a. m. and 5.30 p. m.; datum un- 
 changed. 
 
 Channel. — Permanent. 
 
 Discharge measurements. — Made by wading. 
 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
 Discharge measurements of Nailiilihaele Stream near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 24 
 Nov. 11 
 
 J. B.Stewart 
 
 Feet. 
 0.75 
 1.60 
 
 Sec.-ft. 
 1.00 
 
 do 
 
 44.3 
 
 
 
 
ISLAND OF MAUI. 189 
 
 Daily gage height, in feet, of Nailiilihaele Stream near Huelo, Maui, for 1912. 
 JEurukawa, observer.] 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.45 
 
 .44 
 .52 
 .48 
 .42 
 
 .40 
 .48 
 .52 
 .92 
 1.30 
 
 1.30 
 1.32 
 .88 
 1.38 
 2.02 
 
 0.50 
 1.80 
 1.30 
 1.20 
 1.15 
 
 .80 
 1.60 
 .85 
 .68 
 .52 
 
 .50 
 .45 
 .45 
 .45 
 .45 
 
 0.45 
 
 .85 
 .45 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .50 
 
 .40 
 
 .40 
 
 1.50 
 
 1.25 
 
 1.45 
 
 1.15 
 
 1.85 
 
 .90 
 
 .80 
 
 .50 
 
 .65 
 
 .50 
 
 3.35 
 
 1.75 
 
 1.65 
 
 1.15 
 
 .95 
 
 .80 
 
 .60 
 
 1.45 
 2.20 
 3.40 
 1.65 
 1.55 
 
 1.45 
 1.55 
 1.40 
 1.15 
 .80 
 
 .65 
 .50 
 .45 
 .65 
 .45 
 
 16 
 
 
 1.42 
 
 .82 
 .70 
 .60 
 .52 
 
 .45 
 .72 
 .62 
 .52 
 .42 
 
 .45 
 .45 
 .45 
 .78 
 .58 
 .65 
 
 0.45 
 .45 
 .45 
 .42 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .75 
 
 0.50 
 .40 
 .40 
 .40 
 
 .40 
 
 1.80 
 2.10 
 1.70 
 1.55 
 1.15 
 
 1.35 
 
 2.80 
 2.80 
 1.45 
 1.60 
 2.25 
 
 1.54 
 2.30 
 2.40 
 1.70 
 1.65 
 
 1.40 
 1.45 
 1.40 
 1.15 
 1.20 
 
 1.20 
 .85 
 .70 
 .60 
 .70 
 
 0.90 
 
 2 
 
 
 17 
 
 
 .45 
 
 3 
 
 
 18 
 
 
 1.25 
 
 4 
 
 
 19 
 
 
 2.00 
 
 5 
 
 
 20 
 
 
 1.50 
 
 6 
 
 
 21 
 
 
 2.15 
 
 7 
 
 
 22 
 
 
 2.55 
 
 g 
 
 
 23 
 
 
 2.25 
 
 9 
 
 
 24 
 
 
 1.70 
 
 10--.. 
 
 
 25.— 
 
 1.05 
 
 .92 
 
 .82 
 .72 
 .88 
 .45 
 
 .45 
 
 1.30 
 
 11..... 
 
 
 26 
 
 1.80 
 
 12 
 
 
 27 
 
 1.50 
 
 13... 
 
 
 28 
 
 1.60 
 
 14 
 
 
 29 
 
 1.35 
 
 15 . 
 
 
 30 
 
 1.25 
 
 
 
 31 
 
 1.10 
 
 
 
 
 KAILTTA STREAM NEAR HTJELO, MATJI. 
 
 Location. — At wagon bridge about 1,000 feet east of Huelo post office. 
 
 Records available. — July 25 to December 31, 1912. From December 8, 1910, to 
 
 December 31, 1911, a station was maintained above the New Hamakua ditch 
 
 intake. 
 Gage. — Vertical staff; read once daily, at irregular hours; datum unchanged. 
 Channel. — One channel at all stages; probably permanent. 
 Discharge measurements. — Made by wading or from bridge. 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
 Discharge measurements of Kailua Stream near Huelo, Maui, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 25 
 
 J. B . Stewart 
 
 Feet. 
 0.38 
 .25 
 
 Sec.-ft. 
 0.30 
 
 Sept. 24 
 
 do '. 
 
 .10 
 
 
 
 Daily gage height, in feet, of Kailua Stream near Huelo, Maui, for 1912. 
 [John Pachero, observer.] 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.33 
 .33 
 .34 
 .30 
 .30 
 
 .27 
 .30 
 .28 
 .36 
 .36 
 
 .40 
 .55 
 .42 
 .41 
 2.95 
 
 Too" 
 
 1.80 
 
 2.60 
 
 .60 
 
 .53 
 2.60 
 
 '".52 
 .42 
 
 .36 
 .34 
 .31 
 .30 
 .30 
 
 0.82 
 .62 
 .62 
 .43 
 .43 
 
 .42 
 .32 
 .34 
 .34 
 .33 
 
 .44 
 
 .62 
 
 2.12 
 
 1.42 
 
 .42 
 
 2.40 
 2.20 
 2.20 
 2.20 
 
 .82 
 
 .82 
 
 .72 
 
 5.50 
 
 3.30 
 
 2.60 
 
 2.10 
 
 2.00 
 
 .80 
 
 .78 
 
 1.70 
 3.50 
 4.50 
 2.60 
 2.30 
 
 2.20 
 2.30 
 2.20 
 1.90 
 1.80 
 
 1.00 
 .82 
 .80 
 .80 
 .72 
 
 16 
 
 
 0.76 
 .54 
 .40 
 .42 
 .33 
 
 .31 
 .42 
 .40 
 
 .38 
 
 .32 
 .32 
 .23 
 .30 
 .30 
 .31 
 
 0.29 
 .23 
 .23 
 .22 
 .31 
 
 .30 
 
 "\*23" 
 .23 
 .21 
 
 .22 
 .21 
 .23 
 .23 
 1.10 
 
 0.62 
 .53 
 .52 
 .52 
 
 .42 
 
 2.50 
 2.30 
 2.62 
 2.30 
 2.22 
 
 2.60 
 4.10 
 4.60 
 2.22 
 2.60 
 2.40 
 
 3.50 
 3.40 
 3.90 
 2.70 
 2.50 
 
 2.40 
 2.30 
 2.50 
 2.10 
 1.50 
 
 1.48 
 
 1.70 
 
 1.00 
 
 .92 
 
 .82 
 
 1.70 
 
 2 
 
 
 17 
 
 
 .82 
 
 3 
 
 
 18 
 
 
 1.80 
 
 4 
 
 
 19 
 
 
 2.70 
 
 5 
 
 
 20 . 
 
 
 2.70 
 
 6 
 
 
 21 
 
 
 1.90 
 
 7..... 
 
 
 22 
 
 
 3.30 
 
 8 
 
 
 23 
 
 
 4.30 
 
 9 
 
 24 
 
 
 2.33 
 
 10 
 
 
 25 
 
 26 
 
 0.38 
 
 
 11 
 
 
 3.00 
 
 12 
 
 
 27 
 
 .36 
 .36 
 .36 
 .35 
 .33 
 
 2.13 
 
 13 
 
 
 28 
 
 2.00 
 
 14 
 
 
 29 
 
 2.20 
 
 15 
 
 
 30 
 
 2.20 
 
 
 
 31 
 
 2,00 
 
 
 
 
190 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 HOOLAWALIILII STREAM NEAR HUELO, MATJI. 
 
 Location. — About 3 miles by trail southwest of Huelo post office, 1 mile east of Lupi, 
 200 feet above inflow of Old Hamakua ditch and 400 feet above New Hamakua 
 ditch crossing. 
 
 Records available. — April 5, 1911, to December 31, 1912. 
 
 G- a g e# — Vertical staff; read twice daily, about 6.30 a. m. and 4 p. m.; datum un- 
 changed. 
 
 Channel. — Rocky. 
 
 Discharge measurements.— Made by wading. 
 
 Accuracy. — Very good. 
 
 Discharge measurements of Hoolawaliilii Stream near Huelo, Maui, in 1912. 
 [J. B. Stewart, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 13 
 
 Feet. 
 0.12 
 .39 
 .13 
 
 Sec-ft. 
 3.09 
 10.0 
 1 3.03 
 
 Sept. 20.. 
 Nov. 12... 
 
 
 Feet. 
 0.12 
 .28 
 
 Sec-ft. 
 2.32 
 
 Mar. 12 
 
 10.9 
 
 July 25 
 
 
 
 
 Daily gage height, in feet, of Hoolawaliilii Stream near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0. 16 
 .16 
 .15 
 .14 
 .13 
 
 .12 
 .12 
 .13 
 .12 
 .12 
 
 .12 
 .12 
 .11 
 .11 
 .11 
 
 .11 
 .11 
 .11 
 .10 
 .10 
 
 .10 
 .09 
 .09 
 .12 
 .10 
 
 .10 
 . .09 
 .09 
 .09 
 .09 
 .09 
 
 0.09 
 .09 
 .09 
 .09 
 .09 
 
 .09 
 .08 
 .08 
 
 .12 
 .10 
 
 .10 
 .10 
 .19 
 .14 
 .12 
 
 .12 
 .12 
 .12 
 .17 
 .21 
 
 .30 
 .32 
 .24 
 .22 
 .24 
 
 .20 
 .34 
 .39 
 
 .27 
 
 0.26 
 .30 
 .32 
 
 .27 
 .25 
 
 .24 
 .25 
 .22 
 
 .28 
 .26 
 
 .42 
 .38 
 .42 
 .33 
 .29 
 
 .25 
 .26 
 .36 
 .28 
 .26 
 
 .24 
 .22 
 .20 
 .20 
 .19 
 
 .20 
 .18 
 .16 
 .15 
 .18 
 .16 
 
 0.20 
 .20 
 
 .26 
 .78 
 .61 
 
 .46 
 .52 
 .52 
 .52 
 .42 
 
 .38 
 .36 
 .32 
 .34 
 .34 
 
 .32 
 .30 
 .25 
 .24 
 .32 
 
 .24 
 .22 
 .24 
 .22 
 .25 
 
 .26 
 .24 
 .24 
 .22 
 .20 
 
 0.20 
 -.21 
 .18 
 .19 
 .18 
 
 .21 
 .19 
 .20 
 .18 
 .16 
 
 .15 
 .14 
 .14 
 .14 
 .12 
 
 1 .12 
 .12 
 .12 
 .12 
 .14 
 
 .12 
 .11 
 .11 
 .12 
 .11 
 
 .13 
 .18 
 .16 
 .18 
 .13 
 .14 
 
 0.13 
 .13 
 .12 
 .12 
 .11 
 
 .11 
 .11 
 .12 
 .11 
 .18 
 
 .16 
 .13 
 .15 
 .13 
 .13 
 
 .13 
 .13 
 .13 
 .12 
 .13 
 
 .13 
 .12 
 
 .12 
 .22 
 .14 
 
 .14 
 .13 
 .13 
 .13 
 .12 
 
 0.12 
 .12 
 .14 
 .14 
 .14 
 
 .14 
 .14 
 .14 
 .21 
 .14 
 
 .18 
 .14 
 .15 
 .15 
 .14 
 
 .14 
 .14 
 .13 
 .13 
 .13 
 
 .13 
 .13 
 .13 
 
 .14 
 .14 
 
 .14 
 .13 
 .14 
 .13 
 .13 
 .12 
 
 0.12 
 .12 
 .12 
 .11 
 .11 
 
 .11 
 .12 
 .11 
 .13 
 .12 
 
 .17 
 .12 
 .12 
 .14 
 .27 
 
 .16 
 .14 
 .13 
 .13 
 ! .12 
 
 i .12 
 .16 
 .12 
 .12 
 .12 
 
 .12 
 .12 
 .13 
 .12 
 .13 
 .12 
 
 0.13 
 .20 
 .19 
 .20 
 
 .14 
 
 .14 
 .16 
 .15 
 .14 
 .14 
 
 .12 
 .12 
 .12 
 .12 
 .13 
 
 .13 
 .14 
 .12 
 .12 
 .12 
 
 .12 
 .12 
 .12 
 .12 
 .12 
 
 .11 
 .11 
 .11 
 .12 
 .15 
 
 0.12 
 .13 
 
 .12 
 .12 
 .10 
 
 .10 
 .09 
 .08 
 .08 
 .08 
 
 .08 
 .08 
 .08 
 .12 
 .16 
 
 .10 
 .08 
 .08 
 .08 
 .08 
 
 .16 
 .20 
 .20 
 .18 
 .15 
 
 .20 
 .34 
 .39 
 .24 
 .26 
 .27 
 
 0.24 
 
 .22 
 .35 
 .22 
 .20 
 
 .18 
 .16 
 .14 
 .52 
 .34 
 
 .28 
 .24 
 .22 
 .20 
 .18 
 
 .38 
 .39 
 .42 
 .36 
 .36 
 
 .28 
 .26 
 .26 
 .24 
 .24 
 
 .22 
 .20 
 .20 
 .18 
 .18 
 
 0.22 
 
 2. 
 
 .42 
 
 3 
 
 .74 
 
 4 
 
 .35 
 
 5 
 
 .25 
 
 6 
 
 .24 
 
 7 
 
 .24 
 
 8 
 
 .22 
 
 9 
 
 .21 
 
 10 
 
 ,20 
 
 11 
 
 .18 
 
 12... 
 
 .17 
 
 13 
 
 .16 
 
 14 
 
 .16 
 
 15. 
 
 .16 
 
 16 
 
 .16 
 
 17 
 
 .16 
 
 18. 
 
 .18 
 
 19 
 
 .28 
 
 20 
 
 .20 
 
 21 
 
 .32 
 
 22 
 
 .32 
 
 23 
 
 .34 
 
 24. 
 
 .33 
 
 25 
 
 .30 
 
 26 
 
 .28 
 
 27 
 
 28 
 
 .26 
 .26 
 
 29 
 
 .24 
 
 30 
 
 .24 
 
 31 
 
 .22 
 
 
 
ISLAND OF MAUI. 191 
 
 Daily discharge, in second-feet, of Hoolawaliilii Stream near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 4.6 
 4.6 
 4.2 
 3.9 
 3.6 
 
 3.2 
 3.2 
 3.6 
 3.2 
 3.2 
 
 3.2 
 3.2 
 2.8 
 2.8 
 2.8 
 
 2.8 
 2.8 
 2.8 
 2.5 
 2.5 
 
 2.5 
 2.2 
 2.2 
 3.2 
 2.5 
 
 2.5 
 2.2 
 2.2 
 2.2 
 2.2 
 2.2 
 
 2.2 
 2.2 
 2.2 
 2.2 
 2.2 
 
 2.2 
 2.0 
 2.0 
 3.2 
 2.5 
 
 2.5 
 2.5 
 5.6 
 3.9 
 3.2 
 
 3.2 
 3.2 
 3.2 
 5.0 
 
 6.5 
 
 11.0 
 
 12.1 
 
 8.0 
 
 7.0 
 
 8.0 
 
 6.0 
 13.2 
 16.0 
 
 9.5 
 
 9.0 
 11.0 
 12.1 
 9.5 
 8.5 
 
 8.0 
 8.5 
 7.0 
 10.0 
 9.0 
 
 17.6 
 15.4 
 17.6 
 12.6 
 10.5 
 
 8.5 
 9.0 
 14.3 
 10.0 
 9.0 
 
 8.0 
 7.0 
 6.0 
 6.0 
 5.6 
 
 6.0 
 5.3 
 4.6 
 4.2 
 5.3 
 4.6 
 
 6.0 
 6.0 
 9.0 
 
 38.8 
 28.6 
 
 19.8 
 23.2 
 23.2 
 23.2 
 17.6 
 
 15.4 
 14.3 
 12.1 
 13.2 
 13.2 
 
 12.1 
 11.0 
 8.5 
 8.0 
 12.1 
 
 8.0 
 7.0 
 8.0 
 7.0 
 
 8.5 
 
 9.0 
 8.0 
 8.0 
 7.0 
 6.0 
 
 6.0 
 6.5 
 5.3 
 5.6 
 5.3 
 
 6.5 
 5.6 
 6.0 
 5.3 
 4.6 
 
 4.2 
 3.9 
 3.9 
 3.9 
 3.2 
 
 3.2 
 3.2 
 3.2 
 3.2 
 3.9 
 
 3.2 
 
 2.8 
 2.8 
 3.2 
 2.8 
 
 3.6 
 5.3 
 4.6 
 5.3 
 3.6 
 3.9 
 
 3.6 
 3.6 
 3.2 
 3.2 
 
 2.8 
 
 2.8 
 2.8 
 3.2 
 2.8 
 5.3 
 
 4.6 
 3.6 
 4.2 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.2 
 3.6 
 
 3.6 
 3.2 
 3.2 
 7.0 
 3.9 
 
 3.9 
 3.6 
 3.6 
 3.6 
 3.2 
 
 3.2 
 3.2 
 3.9 
 * 3.9 
 3.9 
 
 3.9 
 3.9 
 3.9 
 6.5 
 3.9 
 
 5.3 
 3.9 
 4.2 
 4.2 
 3.9 
 
 3.9 
 3.9 
 3.6 
 3.6 
 3.6 
 
 3.6 
 3.6 
 3.6 
 3.9 
 3.9 
 
 3.9 
 3.6 
 3.9 
 3.6 
 3.6 
 3.2 
 
 3.2 
 3.2 
 3.2 
 
 2.8 
 2.8 
 
 2.8 
 3.2 
 2.8 
 3.6 
 3.2 
 
 5.0 
 3.2 
 3.2 
 3.9 
 9.5 
 
 4.6 
 3.9 
 3.6 
 3.6 
 3.2 
 
 3.2 
 4.6 
 3.2 
 3.2 
 3.2 
 
 3.2 
 3.2 
 3.6 
 3.2 
 3.6 
 3.2 
 
 3.6 
 6.0 
 5.6 
 6.0 
 3.9 
 
 3.9 
 4.6 
 4.2 
 3.9 
 3.9 
 
 3.2 
 3.2 
 3.2 
 3.2 
 3.6 
 
 3.6 
 3.9 
 3.2 
 3.2 
 3.2 
 
 3.2 
 3.2 
 3.2 
 3.2 
 3.2 
 
 2.8 
 2.8 
 2.8 
 3.2 
 4.2 
 
 3.2 
 3.6 
 3.2 
 3.2 
 2.5 
 
 2.5 
 2.2 
 2.0 
 2.0 
 2.0 
 
 2.0 
 2.0 
 2.0 
 3.2 
 
 4.6 
 
 2.5 
 2.0 
 2.0 
 2.0 
 2.0 
 
 4.6 
 6.0 
 6.0 
 5.3 
 
 4.2 
 
 6.0 
 13.2 
 16.0 
 8.0 
 9.0 
 9.5 
 
 8.0 
 7.0 
 13.8 
 7.0 
 6.0 
 
 5.3 
 4.6 
 3.9 
 23.2 
 13.2 
 
 10.0 
 8.0 
 7.0 
 6.0 
 5.3 
 
 15.4 
 16.0 
 17.6 
 14.3 
 14.3 
 
 10.0 
 9.0 
 9.0 
 8.0 
 
 8.0 
 
 7.0 
 6.0 
 6.0 
 5.3 
 5.3 
 
 7.0 
 
 2 
 
 17.6 
 
 3 
 
 36.4 
 
 4 , 
 
 13.8 
 
 5 
 
 8.5 
 
 6 
 
 8.0 
 
 7 
 
 8.0 
 
 8 
 
 7.0 
 
 9 
 
 6.5 
 
 10 
 
 6.0 
 
 11 
 
 5.3 
 
 12. 
 
 5.0 
 
 13 
 
 4.6 
 
 14 
 
 4.6 
 
 
 4.6 
 
 16 
 
 4.6 
 
 17 
 
 4.6 
 
 18 
 
 5.3 
 
 19 
 
 10.0 
 
 20 
 
 6.0 
 
 21 
 
 12.1 
 
 22 
 
 12.1 
 
 
 13.2 
 
 24 
 
 12.6 
 
 25 
 
 11.0 
 
 26 
 
 10.0 
 
 27 
 
 9.0 
 
 28 
 
 9.0 
 
 29 
 
 8.0 
 
 30 
 
 8.0 
 
 31.. . 
 
 7.0 
 
 
 
 Monthly discharge of Hoolawaliilii Stream near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 16.0 
 
 17.6 
 
 38.8 
 
 6.5 
 
 7.0 
 
 6.5 
 
 9.5 
 
 6.0 
 
 16.0 
 
 23.2 
 
 36.4 
 
 38.8 
 
 2.2 
 2.0 
 4.2 
 6.0 
 2.8 
 2.8 
 3.2 
 2.8 
 2.8 
 2.0 
 
 2.0 
 
 2.96 
 5.26 
 9.02 
 13.1 
 4.31 
 3.64 
 3.89 
 3.61 
 3.70 
 4.47 
 9.32 
 9.21 
 
 182.0 
 303.0 
 555.0 
 780.0 
 265.0 
 217.0 
 239.0 
 222.0 
 220.0 
 275.0 
 555. 
 566.0 
 
 ,380.0 
 
 HOOLAWANUI STREAM NEAR HTJELO, MATJI. 
 
 Location. — About 3| miles by trail southwest from Huelo post office, one-fourth mile 
 east of Lupi, and 250 feet above crossing of New Hamakua ditch. 
 
 Records available. — December 12, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, about 6.30 a. m. and 5 p. m.; datum 
 unchanged. 
 
 Channel. — Practically permanent. 
 
 Discharge measurements. — Made by wading. 
 
 Accuracy. — Very good. 
 
 Cooperation.— Station maintained in cooperation with East Maui Ditch Co. 
 
192 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements of Hoolawanui Stream near Huelo, Maui, in 1912. 
 [J. B. Stewart, hydrographer.] 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 13 . 
 
 
 Feet. 
 0.11 
 .50 
 .08 
 
 " Sec.-ft. 
 3.21 
 27.0 
 3.42 
 
 Sept. 20. 
 
 
 Feet. 
 0.08 
 .33 
 
 Sec.-ft. 
 2.47 
 
 Mar. 12. 
 
 
 Nov. 12. 
 
 
 19.1 
 
 July 25. 
 
 
 
 
 
 
 
 Daily gage height, in feet, of Hoolawanui Stream near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.18 
 .18 
 .16 
 .15 
 .14 
 
 .14 
 .14 
 .14 
 .12 
 .12 
 
 .10 
 .10 
 .10 
 .10 
 .09 
 
 .09 
 .08 
 .08 
 .08 
 .08 
 
 .08 
 .07 
 .07 
 .12 
 .07 
 
 .07 
 .07 
 .07 
 .06 
 .06 
 .06 
 
 0.06 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .04 
 .06 
 .12 
 .10 
 
 .08 
 .06 
 .18 
 .12 
 .08 
 
 .08 
 .07 
 .06 
 .16 
 .32 
 
 .40 
 .56 
 .27 
 .24 
 .25 
 
 .19 
 .29 
 .54 
 .37 
 
 0.34 
 .36 
 .45 
 .36 
 .33 
 
 .30 
 .32 
 .29 
 .32 
 .30 
 
 .56 
 .49 
 .56 
 .38 
 .33 
 
 .30 
 .34 
 .45 
 .33 
 .30 
 
 .28 
 .24 
 .22 
 .22 
 .22 
 
 .23 
 .20 
 .18 
 .17 
 .27 
 .36 
 
 0.36 
 .29 
 .39 
 
 .98 
 
 .84 
 
 .52 
 .76 
 .82 
 .73 
 
 .57 
 
 .60 
 .46 
 .39 
 .46 
 .44 
 
 .38 
 .37 
 .33 
 .31 
 .36 
 
 .30 
 .26 
 .32 
 .26 
 .29 
 
 .32 
 .34 
 .30 
 
 .27 
 .24 
 
 0.22 
 .23 
 .20 
 .26 
 .20 
 
 .24 
 .20 
 .23 
 .20 
 
 .18 
 
 .17 
 .16 
 .16 
 .15 
 .14 
 
 .13 
 .13 
 .13 
 .13 
 .15 
 
 .14 
 .12 
 .11 
 .12 
 .11 
 
 .15 
 .20 
 .18 
 .17 
 .13 
 .13 
 
 0.12 
 .12 
 .11 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .18 
 
 .17 
 .13 
 .15 
 .13 
 .12 
 
 .12 
 .12 
 .12 
 .12 
 .12 
 
 .12 
 .12 
 .11 
 .23 
 .14 
 
 .12 
 .12 
 .12 
 .12 
 .11 
 
 0.11 
 .11 
 .14 
 .22 
 .16 
 
 .13 
 .13 
 .14 
 .26 
 .14 
 
 .18 
 .14 
 .14 
 .14 
 .13 
 
 .13 
 
 .12 
 .12 
 .11 
 .11 
 
 .12 
 .11 
 .11 
 .14 
 .12 
 
 .12 
 .11 
 .12 
 .11 
 .10 
 .10 
 
 0.08 
 .07 
 .07 
 .06 
 .06 
 
 .06 
 .06 
 .06 
 .12 
 .08 
 
 .14 
 .08 
 .08 
 .11 
 .24 
 
 .14 
 .09 
 .08 
 .08 
 
 .08 
 
 .06 
 1.20 
 .07 
 .06 
 .06 
 
 .06 
 .06 
 .05 
 .07 
 .06 
 .06 
 
 0.07 
 .20 
 .15 
 .15 
 .12 
 
 .12 
 .14 
 .12 
 
 .10 
 .08 
 
 .09 
 .08 
 .08 
 .08 
 .07 
 
 .07 
 .08 
 .06 
 .06 
 .06 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .04 
 .04 
 .04 
 .06 
 .12 
 
 0.06 
 .09 
 .06 
 .04 
 .04 
 
 .04 
 .04 
 .04 
 .04 
 .04 
 
 .05 
 .04 
 .04 
 .15 
 .12 
 
 .06 
 .04 
 .04 
 .04 
 .04 
 
 .22 
 .30 
 .24 
 .21 
 .16 
 
 .22 
 .38 
 .45 
 .26 
 .32 
 .47 
 
 0.31 
 .26 
 .39 
 .24 
 .20 
 
 .20 
 .18 
 .16 
 .96 
 .53 
 
 .38 
 .29 
 .24 
 .22 
 .56 
 
 .50 
 .50 
 .62 
 .48 
 .39 
 
 .33 
 .31 
 .30 
 .26 
 .26 
 
 .24 
 .22 
 .20 
 
 .18 
 .18 
 
 0.21 
 
 2 
 
 .48 
 
 3 
 
 1.28 
 
 4 
 
 .48 
 
 5 
 
 .36 
 
 6 
 
 .34 
 
 7 
 
 .28 
 
 8 
 
 .24 
 
 9 
 
 .22 
 
 10 
 
 .20 
 
 11 
 
 .20 
 
 12 
 
 .18 
 
 13 
 
 .18 
 
 14 
 
 .18 
 
 15 
 
 .17 
 
 16 
 
 .18 
 
 17 
 
 .23 
 
 18 
 
 .30 
 
 19 
 
 .33 
 
 20 
 
 .22 
 
 21 
 
 .45 
 
 22 
 
 .56 
 
 23. 
 
 .54 
 
 24 
 
 .40 
 
 25 
 
 .42 
 
 26 
 
 .38 
 
 
 .37 
 
 28 
 
 .34 
 
 
 .32 
 
 30 
 
 .27 
 
 31 
 
 .24 
 
 
 
 Daily discharge, in second-feet, of Hoolawanui Stream near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 8.0 
 
 2.4 
 
 17.8 
 
 19.2 
 
 10.2 
 
 5.0 
 
 4.5 
 
 3.2 
 
 2.8 
 
 2.4 
 
 15.7 
 
 8.0 
 
 2.0 
 
 19.2 
 
 14.4 
 
 10.8 
 
 5.0 
 
 4.5 
 
 2.8 
 
 9.0 
 
 3.6 
 
 12.6 
 
 7.0 
 
 2.0 
 
 25.5 
 
 21.3 
 
 9.0 
 
 4.5 
 
 6.0 
 
 2.8 
 
 6.5 
 
 2.4 
 
 21.3 
 
 6.5 
 
 2.0 
 
 19.2 
 
 70.2 
 
 12.6 
 
 4.0 
 
 10.2 
 
 2.4 
 
 6.5 
 
 1.6 
 
 11.4 
 
 6.0 
 
 2.0 
 
 17.1 
 
 57.6 
 
 9.0 
 
 4.0 
 
 7.0 
 
 2.4 
 
 5.0 
 
 1.6 
 
 9.0 
 
 6.0 
 
 2.0 
 
 15.0 
 
 30.6 
 
 11.4 
 
 4.0 
 
 5.5 
 
 2.4 
 
 5.0 
 
 1.6 
 
 9.0 
 
 6.0 
 
 1.6 
 
 16.4 
 
 50.4 
 
 9.0 
 
 4.0 
 
 5.5 
 
 2.4 
 
 6.0 
 
 1.6 
 
 8.0 
 
 6.0 
 
 2.4 
 
 14.4 
 
 55.8 
 
 10.8 
 
 4.0 
 
 6.0 
 
 2.4 
 
 5.0 
 
 1.6 
 
 7.0 
 
 5.0 
 
 5.0 
 
 16.4 
 
 47.7 
 
 9.0 
 
 4.0 
 
 12.6 
 
 5.0 
 
 4.0 
 
 1.6 
 
 68.4 
 
 5.0 
 
 4.0 
 
 15.0 
 
 34.6 
 
 8.0 
 
 8.0 
 
 6.0 
 
 3.2 
 
 3.2 
 
 1.6 
 
 31.4 
 
 4.0 
 
 3.2 
 
 33.8 
 
 37.0 
 
 7.5 
 
 7.5 
 
 8.0 
 
 6.0 
 
 3.6 
 
 2.0 
 
 20.6 
 
 4.0 
 
 2.4 
 
 28.3 
 
 26.2 
 
 7.0 
 
 5.5 
 
 6.0 
 
 3.2 
 
 3.2 
 
 1.6 
 
 14.4 
 
 4.0 
 
 8.0 
 
 33.8 
 
 21.3 
 
 7.0 
 
 6.5 
 
 6.0 
 
 3.2 
 
 3.2 
 
 1.6 
 
 11.4 
 
 4.0 
 
 5.0 
 
 20.6 
 
 26.2 
 
 6.5 
 
 5.5 
 
 6.0 
 
 4.5 
 
 3.2 
 
 0.5 
 
 10.2 
 
 3.6 
 
 3.2 
 
 17.1 
 
 24.8 
 
 6.0 
 
 5.0 
 
 £5 
 
 11.4 
 
 2.8 
 
 5.0 
 
 33.8 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 9.6 
 27.6 
 100.0 
 27.6 
 19.2 
 
 17.8 
 13.8 
 11.4 
 10.2 
 9.0 
 
 9.0 
 8.0 
 8.0 
 8.0 
 7.5 
 
ISLAND OP MAUI. 193 
 
 Daily discharge, in second-feet, of Hoolawanui Stream near Huelo, Maui, for 1912 — Contd. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 2.4 
 1.6 
 1.6 
 1.6 
 1.6 
 
 10.2 
 15.0 
 11.4 
 9.6 
 
 7.0 
 
 10.2 
 20.6 
 25.5 
 12.6 
 16.4 
 26.9 
 
 Nov. 
 
 Dec. 
 
 16 
 
 3.6 
 3.2 
 3.2 
 3.2 
 3.2 
 
 3.2 
 2.8 
 2.8 
 5.0 
 
 2.8 
 
 2.8 
 2.8 
 2.8 
 2.4 
 2.4 
 2.4 
 
 3.2 
 2.8 
 2.4 
 7.0 
 16.4 
 
 22.0 
 33.8 
 13.2 
 11.4 
 12.0 
 
 8.5 
 14.4 
 32.2 
 19.9 
 
 15.0 
 17.8 
 25.5 
 17.1 
 15.0 
 
 13.8 
 11.4 
 10.2 
 10.2 
 10.2 
 
 10.8 
 9.0 
 8.0 
 7.5 
 13.2 
 19.2 
 
 20.6 
 19.9 
 17.1 
 15.7 
 19.2 
 
 15.0 
 12.6 
 16.4 
 12.6 
 14.4 
 
 16.4 
 17.8 
 15.0 
 13.2 
 11.4 
 
 5.5 
 5.5 
 5.5 
 5.5 
 6.5 
 
 6.0 
 5.0 
 4.5 
 5.0 
 4.5 
 
 6.5 
 9.0 
 8.0 
 7.5 
 5.5 
 5.5 
 
 5.0 
 5.0 
 5.0 
 5.0 
 5.0 
 
 5.0 
 5.0 
 4.5 
 10.8 
 6.0 
 
 5.0 
 5.0 
 5.0 
 5.0 
 4.5 
 
 5.5 
 5.0 
 5.0 
 4.5 
 4.5 
 
 5.0 
 4.5 
 4.5 
 6.0 
 5.0 
 
 5.0 
 4.5 
 5.0 
 4.5 
 4.0 
 4.0 
 
 6.0 
 3.6 
 3.2 
 3.2 
 3.2 
 
 2.4 
 92.0 
 2.8 
 2.4 
 2.4 
 
 2.4 
 
 2.4 
 2.0 
 2.8 
 2.4 
 2.4 
 
 2.8 
 3.2 
 2.4 
 2.4 
 2.4 
 
 2.0 
 2.0 
 2.0 
 2.0 
 
 2.0 
 
 1.6 
 1.6 
 1.6 
 2.4 
 5.0 
 
 29.0 
 29.0 
 38.6 
 27.6 
 21.3 
 
 17.1 
 15.7 
 15.0 
 12.6 
 12.6 
 
 11.4 
 10.2 
 9.0 
 
 8.0 
 8.0 
 
 8.0 
 
 17 
 
 10.8 
 
 18 
 
 15.0 
 
 19 
 
 17.1 
 
 20 
 
 10.2 
 
 21 
 
 25.5 
 
 22 
 
 33.8 
 
 23 
 
 32.2 
 
 24 
 
 22.0 
 
 25 
 
 23.4 
 
 26 
 
 20.6 
 
 27 
 
 19.9 
 
 28 
 
 17.8 
 
 
 16.4 
 
 30 
 
 13.2 
 
 
 11.4 
 
 
 
 Monthly discharge of Hoolawanui Stream near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Accu- 
 racy. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 8.0 
 33.8 
 33.8 
 70.2 
 12.6 
 10.8 
 12.6 
 92.0 
 
 9.0 
 
 26.9 
 
 68.4 
 
 100.0 
 
 100.0 
 
 2.4 
 1.6 
 7.5 
 11.4 
 4.5 
 4.0 
 4.0 
 2.0 
 1.6 
 1.6 
 7.0 
 7.5 
 
 l.i 
 
 4.25 
 8.50 
 16.90 
 25.80 
 7.40 
 5.24 
 5.67 
 6.22 
 3.48 
 6.79 
 18.30 
 18.80 
 
 10.60 
 
 261 
 
 489 
 
 1,040 
 
 1,540 
 
 455 
 
 312 
 
 349 
 
 382 
 
 207 
 
 418 
 
 1,090 
 
 1,160 
 
 7,700 
 
 HONOPOU STREAM NEAR HUELO, MAUI. 
 
 Location. — About 4 miles southwest of Huelo post office and three-fourths of a mile 
 northwest of Lupi. 
 
 Records available.— December 12, 1910, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, about 7 a. m. and 5 p. m.; datum un- 
 changed. 
 
 Channel. — Probably permanent. 
 
 Discharge measurements. — Made by wading. 
 
 Accuracy. — Discharge rating not yet available. 
 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
 Discharge measurements of Honopou Stream near Huelo, Maui, in 1912. 
 [J. B. Stewart, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 13 
 
 Feet. 
 0.11 
 
 .48 
 
 Sec.-ft 
 1.55 
 10.4 
 
 July 26 . 
 
 Feet. 
 0.10 
 .07 
 
 Sec.-ft. 
 1.65 
 
 Mar. 12 
 
 Sept. 20 . . 
 
 
 1 41 
 
 
 
 
 14694°— wsp 336—14- 
 
 -13 
 
194 
 
 Daily gage height, in feet, of Honopou Stream near Huelo, Maui, Jor 1912. 
 [Miyabara, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec, 
 
 1 
 
 0.20 
 .20 
 
 .18 
 .18 
 .16 
 
 .16 
 .16 
 .15 
 .14 
 .14 
 
 .12 
 .12 
 .12 
 .12 
 .11 
 
 .11 
 .10 
 .10 
 .09 
 .08 
 
 .08 
 .08 
 .08 
 .13 
 .10 
 
 .10 
 
 .09 
 .08 
 .08 
 .07 
 .07 
 
 0.06 
 .06 
 .06 
 .06 
 .06 
 
 .05 
 .05 
 .06 
 .12 
 .08 
 
 .08 
 .08 
 .20 
 .13 
 .09 
 
 .08 
 .07 
 .06 
 .18 
 .22 
 
 .32 
 .38 
 .27 
 .24 
 .23 
 
 .24 
 .45 
 .47 
 .34 
 
 0.36 
 .41 
 .40 
 .35 
 .33 
 
 .32 
 .32 
 .28 
 .33 
 .30 
 
 .52 
 .44 
 .52 
 .42 
 .38 
 
 .32 
 .33 
 .50 
 .34 
 .34 
 
 .30 
 
 .28 
 .26 
 .24 
 .22 
 
 .22 
 .21 
 .20 
 .20 
 .22 
 
 . 0.28 
 
 .25 
 
 .34 
 
 1.13 
 
 .83 
 
 .56 
 .72 
 
 .78 
 .72 
 .58 
 
 .52 
 .50 
 .44 
 .50 
 .51 
 
 .44 
 .40 
 .38 
 .36 
 .41 
 
 ,34 
 .30 
 .34 
 .31 
 .30 
 
 .34 
 .31 
 .28 
 .28 
 .26 
 
 0.24 
 .24 
 .23 
 .28 
 .22 
 
 .22 
 .20 
 .22 
 .20 
 
 .18 
 
 .17 
 .16 
 .16 
 .15 
 .14 
 
 .13 
 .13 
 .13 
 .13 
 .14 
 
 .13 
 .12 
 .11 
 .12 
 .10 
 
 .16 
 .21 
 .18 
 .18 
 .13 
 .14 
 
 0.12 
 .11 
 .10 
 .10 
 .10 
 
 .10 
 .09 
 .09 
 .09 
 .14 
 
 .12 
 .12 
 .12 
 .11 
 .12 
 
 .12 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .09 
 .18 
 .12 
 
 .11 
 .11 
 .11 
 .10 
 .10 
 
 0.10 
 .10 
 .13 
 .17 
 .12 
 
 .11 
 .12 
 .11 
 .26 
 .12 
 
 .16 
 .12 
 .12 
 .11 
 .11 
 
 .11 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .09 
 .09 
 .12 
 .12 
 
 .10 
 
 .09 
 .11 
 .10 
 
 .08 
 .08 
 
 0.08 
 .07 
 .07 
 .06 
 .06 
 
 .06 
 .06 
 .06 
 .06 
 .09 
 
 .14 
 .08 
 .08 
 .10 
 .22 
 
 .12 
 .08 
 .07 
 .06 
 .06 
 
 .06 
 .12 
 .06 
 .06 
 .06 
 
 .05 
 .05 
 .05 
 .06 
 .06 
 .06 
 
 0.07 
 .17 
 .11 
 .17 
 .10 
 
 .10 
 .14 
 .11 
 .10 
 
 .08 
 
 .08 
 .07 
 .07 
 .06 
 .06 
 
 .06 
 .06 
 .06 
 .05 
 .06 
 
 .05 
 .05 
 .05 
 .05 
 .04 
 
 .04 
 .04 
 .04 
 .06 
 .10 
 
 0.07 
 .10 
 .06 
 .04 
 .04 
 
 .04 
 .04 
 .04 
 .04 
 .04 
 
 .04 
 .04 
 .04 
 1.54 
 .08 
 
 .06 
 .04 
 .04 
 .04 
 .04 
 
 .18 
 .21 
 .20 
 .16 
 .14 
 
 .15 
 .48 
 .52 
 .24 
 .28 
 .41 
 
 0.29 
 
 .24 
 .37 
 .24 
 .20 
 
 .20 
 .18 
 .16 
 .78 
 .42 
 
 .36 
 .28 
 .26 
 .24 
 .22 
 
 .40 
 .45 
 .53 
 
 .47 
 .39 
 
 .33 
 .32 
 .30 
 .28 
 .30 
 
 .28 
 .28 
 .24 
 .21 
 .20 
 
 0.24 
 
 2 
 
 .53 
 
 3 
 
 .96 
 
 4 
 
 .55 
 
 5 
 
 .39 
 
 6 
 
 .36 
 
 7 
 
 .37 
 
 8 
 
 .34 
 
 9 
 
 .26 
 
 10 
 
 .28 
 
 11 
 
 .26 
 
 12 
 
 .24 
 
 13 
 
 .22 
 
 14 
 
 .22 
 
 15 
 
 .21 
 
 16 
 
 .21 
 
 17 
 
 .24 
 
 18 
 
 .24 
 
 19 
 
 .38 
 
 20 
 
 .28 
 
 21 
 
 .59 
 
 22 
 
 .66 
 
 23 
 
 .66 
 
 24 
 
 At 
 
 25 
 
 .43 
 
 26 
 
 .40 
 
 27 
 
 .36 
 
 28 
 
 .38 
 
 29 
 
 .36 
 
 30 
 
 .32 
 
 31 
 
 .28 
 
 
 
 
 
 
 HALEHAKU STREAM WEIR NEAR HUELO, MAUI. 
 
 Location. — About 7 miles west of Huelo post office and 3 J miles west of Lupi at New 
 Hamakua ditch crossing. 
 
 Records available. — January 1, 1910, to December 31, 1912. 
 
 Gage. — Head on weir measured by graduated scale to reference point back of diver- 
 sion dam. 
 
 Discharge measurements. — By 6-foot Cippoletti weir. 
 
 Cooperation. — Weir is the property of the East Maui Ditch Co.; discharges copied 
 from records of the Maui Agricultural Co. 
 
 Daily discharge, in million gallons, of Halehdku Stream weir near Huelo, Maui, Jor 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 3.33 
 
 0.70 
 
 9.20 
 
 9.90 
 
 5.13 
 
 1.40 
 
 1.30 
 
 0.67 
 
 0.70 
 
 0.60 
 
 7.00 
 
 3.07 
 
 .80 
 
 11.00 
 
 7.50 
 
 4.76 
 
 1.30 
 
 1.20 
 
 .53 
 
 2.47 
 
 1.07 
 
 5.64 
 
 2.90 
 
 .97 
 
 12.00 
 
 9.57 
 
 4.57 
 
 1.20 
 
 1.53 
 
 .70 
 
 2.10 
 
 .60 
 
 5.30 
 
 2.73 
 
 .70 
 
 10.00 
 
 12.80 
 
 5.23 
 
 1.20 
 
 2.90 
 
 .43 
 
 2.13 
 
 .42 
 
 3.93 
 
 2.37 
 
 .65 
 
 8.73 
 
 12.90 
 
 4.86 
 
 1.20 
 
 2.00 
 
 .53 
 
 1.67 
 
 .30 
 
 3.43 
 
 2.33 
 
 .60 
 
 7.83 
 
 12.90 
 
 5.23 
 
 1.20 
 
 1.45 
 
 .53 
 
 1.23 
 
 .30 
 
 3.00 
 
 2.37 
 
 .60 
 
 8.33 
 
 12.90 
 
 3.96 
 
 1.10 
 
 1.30 
 
 .56 
 
 2.40 
 
 .30 
 
 2.80 
 
 2.20 
 
 1.87 
 
 8.27 
 
 12.90 
 
 4.23 
 
 1.20 
 
 1.93 
 
 .41 
 
 1.37 
 
 .30 
 
 3.40 
 
 2.10 
 
 1.50 
 
 9.60 
 
 12.90 
 
 3.56 
 
 1.10 
 
 3.73 
 
 .96 
 
 1.00 
 
 .35 
 
 12.20 
 
 1.90 
 
 .80 
 
 7.63 
 
 12.90 
 
 3.35 
 
 2.77 
 
 2.10 
 
 .80 
 
 .85 
 
 .30 
 
 12.20 
 
 1.83 
 
 1.15 
 
 9.87 
 
 12.90 
 
 3.10 
 
 2.17 
 
 1.90 
 
 1.13 
 
 .80 
 
 .35 
 
 10.20 
 
 1.66 
 
 .97 
 
 12.90 
 
 12.90 
 
 2.95 
 
 2.13 
 
 1.55 
 
 .74 
 
 .73 
 
 .30 
 
 6.93 
 
 1.60 
 
 2.40 
 
 12.80 
 
 12.90 
 
 2.73 
 
 1.52 
 
 1.65 
 
 .70 
 
 .70 
 
 .57 
 
 5.53 
 
 1.60 
 
 1.63 
 
 10.80 
 
 12.90 
 
 2.50 
 
 1.23 
 
 1.50 
 
 .86 
 
 .60 
 
 3.17 
 
 4.73 
 
 1.50 
 
 .80 
 
 9.00 
 
 12.00 
 
 2.40 
 
 1.70 
 
 1.40 
 
 2.13 
 
 .60 
 
 1.37 
 
 4.80 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 IS 
 
 4.80 
 9.67 
 12. 50 
 10.50 
 8.03 
 
 7.30 
 7.97 
 5.57 
 4.80 
 4.30 
 
 3.90 
 3.60 
 3.40 
 
ISLAND OF MAUI. 
 
 195 
 
 Daily discharge, in million gallons, of Halehdku Stream weir near Huelo, Maui, for 
 
 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 1.40 
 1.30 
 1.17 
 1.15 
 1.10 
 
 1.07 
 1.00 
 1.07 
 2.23 
 1.10 
 
 1.00 
 .95 
 .85 
 .75 
 .70 
 .70 
 
 0.70 
 .70 
 1.03 
 4.70 
 6.43 
 
 8.70 
 12.10 
 5.63 
 3.77 
 3.23 
 
 3.50 
 12.20 
 12.80 
 
 9.97 
 
 7.83 
 7.77 
 9.80 
 8.40 
 7.33 
 
 6.35 
 5.60 
 5.10 
 4.70 
 5.13 
 
 5.10 
 4.43 
 3.90 
 3.55 
 4.93 
 8.33 
 
 11.00 
 
 10.80 
 9.83 
 8.80 
 
 7.87 
 
 7.00 
 6.33 
 6.53 
 6.07 
 6.97 
 
 6.75 
 6.50 
 6.10 
 5.65 
 5.57 
 
 2.30 
 2.20 
 2.20 
 2.36 
 2.60 
 
 2.00 
 1.80 
 1.67 
 1.58 
 1.90 
 
 1.63 
 2.23 
 3.43 
 2.30 
 2.13 
 1.70 
 
 1.17 
 1.22 
 1.45 
 1.33 
 
 1.92 
 
 1.30 
 1.40 
 2.43 
 1.50 
 1.20 
 
 1.20 
 1.20 
 1.10 
 1.10 
 1.00 
 
 1.40 
 1.30 
 1.10 
 1.00 
 1.00 
 
 1.15 
 .97 
 1.07 
 2.33 
 1.40 
 
 1.10 
 1.00 
 1.05 
 1.20 
 
 .75 
 .70 
 
 1.00 
 .63 
 .60 
 
 .58 
 .50 
 
 .60 
 .95 
 .50 
 .40 
 .40 
 
 .50 
 .50 
 .43 
 .95 
 .50 
 .53 
 
 0.58 
 
 .50 
 .45 
 .40 
 .45 
 
 .55 
 .40 
 .40 
 .30 
 .30 
 
 .35 
 .40 
 .40 
 .73 
 2.23 
 
 0.80 
 .50 
 .30 
 .30 
 .63 
 
 3.07 
 7.40 
 4.40 
 3.43 
 2.40 
 
 2.77 
 7.47 
 6,97 
 4.40 
 5.13 
 11.90 
 
 10.50 
 12.90 
 12.90 
 .12.90 
 11.50 
 
 8.90 
 7.62 
 6.77 
 5.93 
 5.17 
 
 5.00 
 4.50 
 4.10 
 3.80 
 4.07 
 
 3.60 
 
 17 
 
 4.70 
 
 18 
 
 4.27 
 
 19 
 
 4.97 
 
 20 
 
 3.70 
 
 21 
 
 8.23 
 
 22 
 
 12.60 
 
 23 
 
 12 40 
 
 24 
 
 9.50 
 
 25 
 
 7.60 
 
 26 
 
 9.07 
 
 27 
 
 7.20 
 
 28 
 
 7.43 
 
 29 
 
 5.67 
 
 30 
 
 5.67 
 
 31 
 
 5.07 
 
 
 
 Note.— Discharge based on two readings daily. A gage was maintained on crest of wasteway at this 
 station to show the amount of water in the stream which was not diverted into the ditch at the weir. 
 No discharge over the wasteway except as noted in the following table, showing gage height in feet. 
 The zero of the gage is at the same elevation as the crest -of the wasteway. 
 
 Feb. 21 0.15 
 
 Feb. 22 . 
 Feb. 27. 
 Feb. 28. 
 Mar. 3 . . 
 Mar. 11 . 
 Mar. 12 . 
 Mar. 13 . 
 Mar. 14 . 
 Mar. 18 . 
 Mar. 29 . 
 
 .10 
 .32 
 .26 
 -.06 
 .18 
 .19 
 .12 
 .04 
 .08 
 .02 
 
 Apr. 4 54 
 
 Apr.5 48 
 
 Apr.6 25 
 
 Apr.7 26 
 
 Apr.8 34 
 
 Apr. 9 .28 
 
 Apr.10 25 
 
 Apr.ll 16 
 
 Apr.12 11 
 
 Apr.13 09 
 
 Apr.14 21 
 
 Apr. 15 . 
 Oct. 31. 
 Nov. 9 . 
 Nov. 10 . 
 Nov. 16 , 
 Nov. 18 . 
 Nov. 19 . 
 Nov. 20 . 
 Dec. 3 . . 
 Dec. 22 . 
 
 0.10 
 .25 
 .20 
 .20 
 .10 
 .25 
 .20 
 .10 
 .40 
 .15 
 
 Monthly discharge of Halehdku Stream weir near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 million 
 gallons) . 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September .... 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 3.33 
 12.80 
 12.90 
 12.90 
 5.23 
 2.77 
 3.73 
 2.13 
 2.47 
 11.90 
 12.90 
 12.60 
 
 12.90 
 
 0.70 
 
 .60 
 
 3.55 
 
 5.57 
 
 1.58 
 
 1.00 
 
 .70 
 
 .40 
 
 .30 
 
 .30 
 
 2.80 
 
 2.93 
 
 .30 
 
 1.65 
 3.50 
 7.94 
 9.75 
 2.99 
 1.43 
 1.48 
 .69 
 .93 
 2.33 
 6.92 
 6.60 
 
 3.84 
 
 51.0 
 102.0 
 246.0 
 293.0 
 92.6 
 42.9 
 46.0 
 21.2 
 27.8 
 72.2 
 208.0 
 205.0 
 
 1, 410. 
 
196 
 
 WATER RESOURCES OF HAWAII, 1912. 
 OPANA STREAM NEAR HUELO, MAUI. 
 
 Location. — About 8 miles west of Huelo, 4J miles west of Lupi, and one-half mile 
 
 from intake of Opana ditch. 
 Records available.— December 13, 1910, to December 31, 1912. 
 Gage.— Inclined staff; read twice daily, about 7 a. m. and 4.30 p. m.; datum 
 
 unchanged. 
 Channel. — Probably permanent. 
 Discharge measurements. — Made by wading and from bridge. 
 
 The following discharge measurement was made by J. B. Stewart: 
 January 12, 1912: Gage height, 1.40 feet; discharge, 0.75 second-foot. 
 
 Daily gage height, in feet, of Opana Stream near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 1.48 
 
 1.35 
 
 1.60 
 
 1.98 
 
 1.52 
 
 1.45 
 
 1.33 
 
 1.22 
 
 0.85 
 
 0.01 
 
 1.80 
 
 L48 
 
 1.35 
 
 1.99 
 
 1.56 
 
 1.52 
 
 1.41 
 
 1.32 
 
 1.19 
 
 .95 
 
 .01 
 
 1.55 
 
 1.48 
 
 1.34 
 
 2.14 
 
 1.56 
 
 1.52 
 
 1.41 
 
 1.33 
 
 1.20 
 
 1.41 
 
 .00 
 
 1.50 
 
 1.48 
 
 1.34 
 
 1.60 
 
 3.04 
 
 1.51 
 
 1.41 
 
 1.40 
 
 1.19 
 
 1.42 
 
 .00 
 
 1.50 
 
 1.47 
 
 1.34 
 
 1.59 
 
 3.42 
 
 1.50 
 
 1.41 
 
 1.40 
 
 1.13 
 
 1.42 
 
 .00 
 
 1.45 
 
 1.48 
 
 1.34 
 
 1.62 
 
 1.92 
 
 1.50 
 
 1.40 
 
 1.40 
 
 1.12 
 
 1.32 
 
 .00 
 
 1.40 
 
 1.48 
 
 1.34 
 
 1.60 
 
 2.28 
 
 1.50 
 
 1.40 
 
 1.36 
 
 1.12 
 
 1.40 
 
 .00 
 
 1.40 
 
 1.47 
 
 1.41 
 
 1.62 
 
 2.71 
 
 1.50 
 
 1.40 
 
 1.34 
 
 1.10 
 
 1.48 
 
 .00 
 
 1.40 
 
 1.47 
 
 1.42 
 
 1.60 
 
 2.32 
 
 1.50 
 
 1.40 
 
 1.45 
 
 1.12 
 
 1.38 
 
 .00 
 
 4.30 
 
 1.27 
 
 1.39 
 
 1.60 
 
 2.08 
 
 1.50 
 
 1.44 
 
 1.39 
 
 1.12 
 
 1.28 
 
 
 2.30 
 
 1.46 
 
 1.38 
 
 1.74 
 
 1.58 
 
 1.49 
 
 1.44 
 
 1.36 
 
 1.14 
 
 1.21 
 
 
 1.70 
 
 1.45 
 
 1.38 
 
 2.10 
 
 1.56 
 
 1.48 
 
 1.40 
 
 1,34 
 
 1.10 
 
 1.17 
 
 
 1.55 
 
 1.42 
 
 1.42 
 
 1.60 
 
 1.56 
 
 1.47 
 
 1.42 
 
 1.31 
 
 1.10 
 
 1.14 
 
 
 1.50 
 
 1.42 
 
 1.40 
 
 1.60 
 
 1.82 
 
 1.46 
 
 1.40 
 
 1,30 
 
 1.10 
 
 1.08 
 
 1.80 
 
 1.50 
 
 1.38 
 
 1.37 
 
 1.58 
 
 1.57 
 
 1.45 
 
 1.40 
 
 1.30 
 
 1.18 
 
 1.04 
 
 1.55 
 
 1.50 
 
 1.39 
 
 1.36 
 
 1.54 
 
 1.57 
 
 1.45 
 
 1.37 
 
 1.26 
 
 1.31 
 
 1.02 
 
 1.35 
 
 2.10 
 
 1.38 
 
 1.35 
 
 1.54 
 
 1.56 
 
 1.45 
 
 '1.36 
 
 1.26 
 
 1.29 
 
 .99 
 
 1.25 
 
 2.80 
 
 1.38 
 
 1.34 
 
 1.60 
 
 1.56 
 
 1.45. 
 
 1.36 
 
 1.-24 
 
 1.22 
 
 .98 
 
 1.10 
 
 2.20 
 
 1.38 
 
 1.48 
 
 1.56 
 
 1.55 
 
 1.45 
 
 1.34 
 
 1.23 
 
 1.16 
 
 .94 
 
 1.00 
 
 2.25 
 
 1.37 
 
 1.52 
 
 1.56 
 
 1.54 
 
 1.48 
 
 1.38 
 
 1.22 
 
 1.12 
 
 .92 
 
 .91 
 
 1.70 
 
 1.37 
 
 2.70 
 
 1.54 
 
 1.53 
 
 1.47 
 
 1.36 
 
 1.21 
 
 1.08 
 
 .92 
 
 .95 
 
 1.70 
 
 1.37 
 
 2.21 
 
 1.53 
 
 1.53 
 
 1.42 
 
 1.36 
 
 1.20 
 
 1.13 
 
 .82 
 
 2.20 
 
 1.60 
 
 1.37 
 
 1.58 
 
 1.53 
 
 . 1.52 
 
 1.41 
 
 1.35 
 
 1.18 
 
 1.05 
 
 .70 
 
 1.80 
 
 1.60 
 
 1.42 
 
 1.50 
 
 1.53 
 
 1.52 
 
 1.44 
 
 1.44 
 
 1.18 
 
 1.02 
 
 .59 
 
 1.70 
 
 1.60 
 
 1.40 
 
 1.44 
 
 1.53 
 
 1.53 
 
 1.42 
 
 1.42 
 
 1.28 
 
 1.01 
 
 .46 
 
 1.55 
 
 1.45 
 
 1.39 
 
 1.39 
 
 1.54 
 
 1.54 
 
 1.45 
 
 1.38 
 
 1.30 
 
 .96 
 
 .33 
 
 1.50 
 
 1.50 
 
 1.34 
 
 2.88 
 
 1.53 
 
 1.54 
 
 1.49 
 
 1.35 
 
 1.29 
 
 .95 
 
 .22 
 
 1.70 
 
 1.50 
 
 1.36 
 
 2.65 
 
 1.52 
 
 1.52 
 
 1.46 
 
 1.34 
 
 1.30 
 
 .92 
 
 .05 
 
 1.80 
 
 1.50 
 
 1.36 
 
 1:81 
 
 1.52 
 
 1.52 
 
 1.47 
 
 1.33 
 
 1.24 
 
 .92 
 
 .01 
 
 1.65 
 
 1.50 
 
 1.35 
 
 
 1.96 
 
 1.52 
 
 1.45 
 
 1.32 
 
 1.24 
 
 .90 
 
 .14 
 
 1.50 
 
 1.55 
 
 1.35 
 
 
 2.53 
 
 
 1.44 
 
 
 1.23 
 
 .85 
 
 
 3.75 
 
 
 Dec. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 
 7. 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 
 17. 
 18. 
 
 19 
 
 20. 
 
 21. 
 22. 
 23 
 24. 
 25, 
 
 20. 
 27. 
 28 
 29 
 30 
 31. 
 
 1.60 
 1.75 
 2.75 
 1.90 
 1.60 
 
 1.60 
 1.60 
 1.55 
 1.50 
 1.65 
 
 1.50 
 1.50 
 1.50 
 1.50 
 1.50 
 
 1.65 
 1.65 
 1.65 
 1.65 
 1.60 
 
 1.75 
 2.20 
 1.75 
 1.66 
 1.60 
 
 1.74 
 1.72 
 1.56 
 1.59 
 1.53 
 1.51 
 
 OPANA DITCH NEAR HITELO, MAUI. 
 
 Location. — About 8 \ miles west of Huelo by trail, 5 miles west of Lupi, and about 
 
 half a mile below ditch intake. • 
 Records available. — January 1, 1910, to December 31, 1912. 
 
 Gage. — Head on weir measured by graduated scale on reference point in weir pool. 
 Discharge measurements. — By 6-foot Cippoletti weir. 
 Cooperation. — Records are copies from office of Maui Agricultural Co., but weir is 
 
 the property of East Maui Ditch Co. 
 
 The following discharge measurement was made by J. B. Stewart: 
 
 January 12, 1912: Gage height, 1 inch (head on weir).; discharge, 0.58 second-foot. 
 
ISLAND OP MAUI. 197 
 
 Daily discharge, in million gallons, of Opana ditch near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7. 
 8 
 9 
 10 
 
 11. 
 
 12 
 13. 
 14 
 15. 
 
 16. 
 17. 
 18. 
 19. 
 20. 
 
 21. 
 22. 
 23. 
 24, 
 25. 
 
 26. 
 Z7. 
 g8. 
 
 29. 
 30. 
 31. 
 
 0.87 
 .80 
 .90 
 .87 
 .70 
 
 .73 
 .60 
 .43 
 .40 
 
 .37 
 
 .23 
 .20 
 .16 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .20 
 .80 
 .23 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .05 
 .05 
 
 (a) 
 
 («) 
 
 (a) 
 
 .53 
 .20 
 
 .17 
 .37 
 .40 
 .20 
 
 .10 
 
 .10 
 
 (a) 
 
 1.73 
 
 4.37 
 
 14.60 
 12.70 
 5.07 
 2.07 
 
 1.20 
 13.90 
 15.40 
 
 8.33 
 
 8.77 
 12.60 
 14.30 
 9.30 
 7.05 
 
 7.80 
 8.73 
 8.67 
 6.37 
 6.53 
 
 8.23 
 12.30 
 8.90 
 7.40 
 6.30 
 
 3.57 
 3.10 
 4.90 
 2.13 
 2.00 
 
 1.50 
 1.35 
 2.20 
 2.00 
 1.10 
 
 1.40 
 
 .90 
 
 .70 
 
 .70 
 
 8.70 
 
 13.30 
 
 11.70 
 8.63 
 10.60 
 16.80 
 15.40 
 
 12.70 
 12.60 
 14.00 
 14.90 
 12.60 
 
 9.60 
 7.57 
 7.30 
 11.70 
 9.33 
 
 10.00 
 9.23 
 9.15 
 7.13 
 4.00 
 
 3.43 
 2.40 
 2.10 
 1.70 
 2.67 
 
 4.40 
 2.40 
 1.55 
 1.45 
 1.40 
 
 1.30 
 1.33 
 1.16 
 1.53 
 1.50 
 
 1.12 
 .90 
 
 .89 
 .70 
 .60 
 
 .60 
 .50 
 .40 
 .40 
 .40 
 
 .30 
 .20 
 .30 
 .30 
 .35 
 
 .20 
 .20 
 .30 
 .20 
 
 1.13 
 .60 
 .40 
 .15 
 .10 
 
 0.0 
 .0 
 .15 
 .50 
 .30 
 
 .15 
 .10 
 .20 
 1.27 
 .20 
 
 .10 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 fa) 
 
 ( a ) - 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 0.05 
 
 4.27 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .77 
 9.03 
 3.03 
 
 .03 
 (a) 
 
 (a) 
 
 2.40 
 
 3.33 
 
 .70 
 
 .76 
 
 13.20 
 
 5.20 
 .93 
 
 .17 
 (a) 
 (a) 
 
 (a) 
 (a) 
 1.20 
 15.40 
 8.90 
 
 5.37 
 
 1.63 
 
 .50 
 
 .30 
 
 .50 
 
 6.20 
 9.33 
 7.50 
 7.50 
 5.93 
 
 5.37 
 4.43 
 1.73 
 
 .90 
 .83 
 
 .60 
 .40 
 .39 
 .33 
 .40 
 
 1.27 
 5.07 
 8.30 
 4.13 
 2.10 
 
 1.43 
 
 1.47 
 
 .93 
 
 .67 
 
 .50 
 
 .40 
 .37 
 .27 
 .40 
 .40 
 
 .93 
 1.40 
 .90 
 .93 
 .63 
 
 1.30 
 6.13 
 6.03 
 2.43 
 
 1.77 
 
 6.17 
 6.10 
 3.23 
 1.60 
 1.07 
 
 a Channel dry. 
 Monthly discharge of Opana ditch near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in million 
 
 gallons. 
 
 Run-off 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 January 
 
 0.90 
 15.40 
 14.30 
 16.80 
 
 1.53 
 .70 
 
 1.27 
 
 0.10 
 .05 
 .70 
 
 1.40 
 .10 
 .10 
 .10 
 
 0.32 
 
 3.31 
 
 5.90 
 
 7.95 
 
 .61 
 
 .20 
 
 .33 
 
 10 00 
 
 February 
 
 82 80 
 
 March. 
 
 183 00 
 
 April 
 
 238 00 
 
 May 
 
 18 90 
 
 June 
 
 4 68 
 
 July 
 
 2 97 
 
 August 
 
 00 
 
 September 
 
 
 
 
 00 
 
 October 
 
 13.20 
 15.40 
 8.30 
 
 .03 
 .17 
 .27 
 
 2.96 
 3.54 
 2.23 
 
 32 60 
 
 November 
 
 91.90 
 69 30 
 
 December 
 
 
 
 The period 
 
 
 
 2.95 
 
 734 00 
 
 
 
 
 
198 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 NEW HAMAKUA DITCH AT NAILIILIHAELE WEIR, NEAR HUELO, MAUI. 
 
 Location. — About 2 miles by trail south of Huelo post office, just before crossing of 
 
 Nailiilihaele Stream. 
 Records available. — January 1, 1910, to December 31, 1912. 
 Gage. — A Friez automatic register. 
 
 Discharge measurements. — By 17-foot Cippoletti weir. 
 Cooperation. — Weir is property of East Maui Ditch Co. Discharge copied from 
 
 records of Maui Agricultural Co. 
 
 Daily discharge, in million gallons, of New Hamakua ditch at Nailiilihaele weir, near 
 
 Huelo, Maui, for 1912.. 
 
 Day. 
 
 1. 
 2. 
 3. 
 4. 
 5. 
 
 6. 
 
 7. 
 8. 
 9. 
 10 
 
 11. 
 
 12. 
 13. 
 14 
 15 
 
 16 
 17 
 18. 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Jan. 
 
 32.80 
 34.80 
 31.30 
 36.10 
 26.00 
 
 24.00 
 22.70 
 23.60 
 22.40 
 20.00 
 
 18.60 
 17.90 
 17.30 
 16.70 
 15.90 
 
 15.00 
 14.40 
 13.90 
 13.20 
 12.40 
 
 12.10 
 11.20 
 11.10 
 12.00 
 11.00 
 
 10.10 
 9.73 
 9.60 
 9.17 
 8.83 
 9.00 
 
 Feb. 
 
 9.12 
 
 8.70 
 8.52 
 8.23 
 
 7.85 
 
 7.60 
 
 7.43 
 
 14.80 
 
 26.60 
 
 11.10 
 
 9.80 
 
 9.66 
 
 31.90 
 
 17.90 
 
 12.50 
 
 11.10 
 
 10.60 
 9.73 
 27.40 
 54.70 
 
 55.60 
 55.20 
 54.70 
 48.30 
 41.90 
 
 40.80 
 56.00 
 55.80 
 55.40 
 
 Mar. 
 
 55.6 
 56.2 
 56.0 
 55.1 
 54.6 
 
 54.6 
 
 55.8 
 54.8 
 54.6 
 55.0 
 
 56.6 
 57.0 
 56.7 
 55.7 
 53.7 
 
 49.3 
 50.0 
 55.1 
 51.4 
 52.3 
 
 48.3 
 41.8 
 38.9 
 35.9 
 51.8 
 
 56.2 
 55.6 
 51.4 
 34.8 
 50.9 
 56.3 
 
 Apr. 
 
 56.4 
 55.6 
 56.2 
 58.3 
 
 57.7 
 
 57.5 
 57.6 
 57.4 
 57.0 
 57.2 
 
 56.8 
 57.1 
 56.5 
 57.1 
 56.5 
 
 56.5 
 56.4 
 55.1 
 54.2 
 54.7 
 
 54.5 
 54.2 
 53.2 
 52.3 
 54.5 
 
 55.2 
 55.0 
 50.0 
 44.4 
 42.0 
 
 May. 
 
 38.0 
 39.0 
 39.7 
 50.8 
 53.0 
 
 48.0 
 39.8 
 47.4 
 37.2 
 32.9 
 
 30.2 
 28.0 
 26.2 
 26.0 
 23.2 
 
 21.7 
 20.6 
 20.0 
 20.4 
 22.6 
 
 21.6 
 
 18.0 
 16.5 
 18.0 
 15.8 
 
 25.4 
 40.6 
 26.4 
 23.6 
 19.8 
 18.1 
 
 June. 
 
 16.8 
 15.5 
 14.8 
 14.2 
 13.6 
 
 12.6 
 13.0 
 16.4 
 14.7 
 29.6 
 
 36.5 
 24.4 
 24.5 
 20.4 
 17.9 
 
 19.0 
 16.4 
 15.0 
 19.8 
 17.4 
 
 24.8 
 18.5 
 16.3 
 34.0 
 21.0 
 
 17.4 
 16.4 
 15.1 
 13.9 
 13.0 
 
 July. 
 
 14.1 
 15.2 
 17.3 
 22.4 
 19.7 
 
 16.4 
 15.3 
 22.1 
 39.8 
 24.6 
 
 23.8 
 21.2 
 24.5 
 21.3 
 17.7 
 
 16.2 
 14.9 
 14.0 
 12.9 
 12.0 
 
 11.6 
 
 12.2 
 10.4 
 15.0 
 13.4 
 
 12.4 
 13.5 
 -14.3 
 15.9 
 12.7 
 11.2 
 
 Aug. 
 
 10.50 
 10.10 
 10.60 
 9.66 
 
 8.26 
 8.50 
 8.01 
 11.90 
 12.30 
 
 23.70 
 20.60 
 18.90 
 26.00 
 43.90 
 
 30.70 
 21.30 
 18.50 
 20.20 
 16.20 
 
 15.00 
 21.90 
 16.30 
 14.00 
 12.50 
 
 13.20 
 14.40 
 13.20 
 17.00 
 14.20 
 17.60 
 
 Sept. 
 
 18.20 
 45.40 
 48.60 
 46.90 
 34.70 
 
 40.20 
 53.90 
 38.00 
 29.70 
 25.70 
 
 23.00 
 21.20 
 19.60 
 16.90 
 14.90 
 
 14.00 
 12.70 
 12.20 
 11.90 
 11.80 
 
 10.90 
 9.97 
 9.33 
 
 8.80 
 8.57 
 
 7.90 
 
 7.70 
 
 11.20 
 
 33.80 
 
 Oct.. 
 
 16.7 
 22.2 
 16.9 
 12.2 
 10.7 
 
 10.0 
 10.1 
 10.6 
 18.4 
 15.9 
 
 13.8 
 16.1 
 20.8 
 51.4 
 38.0 
 
 25.4 
 21.2 
 17.8 
 16.2 
 20.2 
 
 50.4 
 55.8 
 55.4 
 53.8 
 43.9 
 
 45.1 
 56.1 
 56.4 
 53.4 
 55.0 
 56.4 
 
 Nov. 
 
 52.8 
 48.7 
 54.0 
 45.4 
 34.6 
 
 30.2 
 30.4 
 31.1 
 56.8 
 56.0 
 
 54.4 
 48.9 
 40.6 
 36.3 
 36.2 
 
 55.9 
 56.0 
 56.5 
 55.9 
 55.5 
 
 54.7 
 55.0 
 54.2 
 49.4 
 50.9 
 
 48.0 
 43.7 
 41.2 
 37.2 
 38.0 
 
 Dec. 
 
 53.9 
 60.1 
 62.2 
 56.9 
 56.7 
 
 55:0 
 53.7 
 47.9 
 42.7 
 39.4 
 
 35.1 
 
 32.4 
 30.7 
 31.7 
 30.5 
 
 44.2 
 35.0 
 49.1 
 53.1 
 45.7 
 
 45.8 
 46.1 
 46.6 
 46.2 
 46.2 
 
 46.5 
 46.3 
 46.1 
 45.4 
 45.8 
 45.0 
 
 Monthly discharge of New Hamakua ditch at Nailiilihaele weir, near Huelo, Maui, for 
 
 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 Run-off 
 (total in 
 million 
 gallons). 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 36.1 
 56.0 
 57.0 
 58.3 
 53.0 
 36.5 
 39.8 
 43.9 
 53,9 
 56.4 
 56.8 
 62.2 
 
 8.83 
 
 7.43 
 
 34.80 
 
 42.00 
 
 15.80 
 
 12.60 
 
 10.40 
 
 8.01 
 
 7.70 
 
 10.00 
 
 30.20 
 
 30.50 
 
 62.2 
 
 7.43 
 
 17.5 
 26.5 
 52.0 
 54.9 
 29.3 
 18.8 
 17.0 
 16.4 
 18.8 
 31.2 
 47.0 
 45.9 
 
 31.4 
 
 543 
 
 769 
 
 1,610 
 
 1, 650 
 
 908 
 
 563 
 
 528 
 
 508 
 
 656 
 
 966 
 
 1,410 
 
 1,420 
 
 11,500 
 
ISLAND OF MAUI. 
 
 199 
 
 NEW HAMAKUA DITCH AT HALEHAKU WEIR, NEAR HTJELO, MAUI. 
 
 Location. — About 7 miles west of Huelo post office, 3£ miles west of Lupi, and 
 
 just above crossing of Halehaku Stream. 
 Records available. — January 1, 1910, to December 31, 1912. 
 Gage. — Friez clock register. 
 
 Discharge measurements. — By 25-foot Cippoletti weir. 
 Channel. — No velocity of approach; conditions good. 
 Cooperation. — Weir is property of East Maui Ditch Co.; discharge copied from 
 
 records of Maui Agricultural Co. 
 
 Daily discharge, in million gallons, of New Hamakua ditch at Halehaku weir, near Huelo, 
 
 Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 54.1 
 54.5 
 53.5 
 44.3 
 48.9 
 
 46.1 
 44.4 
 46.8 
 44.2 
 39.3 
 
 37.2 
 35.5 
 34.6 
 33.3 
 31.8 
 
 30.6 
 29.5 
 28.4 
 27.3 
 26.0 
 
 25.0 
 23.4 
 23.5 
 29.3 
 25.6 
 
 22.7 
 21.5 
 20.7 
 19.8 
 19.0 
 20.1 
 
 19.7 
 18.3 
 18.7 
 17.9 
 16.7 
 
 16.2 
 15.7 
 19.4 
 44.5 
 24.4 
 
 26.9 
 23.4 
 54.4 
 44.9 
 30.6 
 
 26.6 
 
 24.5 
 22.3 
 48.2 
 54.2 
 
 53.7 
 52.6 
 54.4 
 54.7 
 52.9 
 
 52.4 
 54.1 
 53.6 
 54.7 
 
 55.8 
 53.7 
 54.0 
 54.2 
 53.9 
 
 54.0 
 
 56.3 
 55.5 
 56.4 
 56.7 
 
 56.0 
 42.3 
 47.0 
 54.5 
 55.9 
 
 58.2 
 59.0 
 56.2 
 57.4 
 59.2 
 
 58.9 
 57.2 
 61.8 
 57.9 
 59.8 
 
 60.3 
 
 59.5 
 58.2 
 55.4 
 55.0 
 54.8 
 
 55.2 
 54.6 
 56.1 
 55.5 
 55.4 
 
 55.0 
 
 55.6 
 55.2 
 54.4 
 55.0 
 
 55.2 
 55.3 
 55.7 
 56.2 
 55.8 
 
 55.9 
 
 55.6 
 56.3 
 59.8 
 
 58.7 
 
 57.4 
 57.6 
 55.4 
 53.1 
 54.3 
 
 54.8 
 54.1 
 54.0 
 53.2 
 52.5 
 
 51.6 
 50.1 
 49.6 
 54.5 
 55.7 
 
 55.7 
 53.3 
 53.6 
 53.9 
 50.9 
 
 54.5 
 51.9 
 48.9 
 46.7 
 42.3 
 
 40.0 
 37.7 
 
 36.8 
 36.8 
 40.6 
 
 36.8 
 32.3 
 29.8 
 35.0 
 30.0 
 
 44.0 
 55.1 
 50.0 
 48.4 
 43.0 
 40.6 
 
 35.8 
 33.1 
 31.1 
 29.2 
 28.0 
 
 26.4 
 26.4 
 29.6 
 27.6 
 46.0 
 
 54.2 
 44.6 
 51.1 
 45.3 
 43.3 
 
 43.4 
 37.3 
 34.0 
 40.0 
 37.4 
 
 49.8 
 41.0 
 36.8 
 53.8 
 43.4 
 
 38.1 
 37.0 
 35.2 
 31.8 
 29.9 
 
 32.2 
 36.4 
 42.9 
 55.7 
 49.5 
 
 40.2 
 36.0 
 37.6 
 56.7 
 50.1 
 
 54.3 
 47.1 
 
 50.6 
 48.1 
 40.7 
 
 37.6 
 34.5 
 32.2 
 30.3 
 28.8 
 
 30.4 
 27.5 
 25.8 
 40.2 
 36.1 
 
 31.3 
 31.0 
 31.6 
 35.0 
 29.8 
 26.2 
 
 24.5 
 23.5 
 . 24.0 
 22.6 
 21.1 
 
 20.1 
 21.6 
 20.9 
 33.0 
 30.3 
 
 48.1 
 40.8 
 37.1 
 41.1 
 61.6 
 
 52.7 
 41.3 
 36.6 
 36.6 
 31.6 
 
 29.3 
 42.5 
 32.5 
 27.6 
 25.3 
 
 26.1 
 27.2 
 25.6 
 34.4 
 39.1 
 32.7 
 
 32.8 
 58.7 
 54.1 
 57.1 
 52.9 
 
 54.9 
 61.1 
 57.7 
 50.2 
 43.2 
 
 38.8 
 35.9 
 33.2 
 30.1 
 29.1 
 
 27.5 
 26.9 
 25.2 
 24.2 
 24.3 
 
 22.6 
 21.2 
 19.9 
 
 18.7 
 18.4 
 
 17.9 
 17.2 
 17.1 
 21.6 
 58.8 
 
 35.3 
 42.2 
 38.3 
 25.8 
 22.2 
 
 20.6 
 21.0 
 20.9 
 27.6 
 27.6 
 
 23.2 
 
 26.6 
 32.2 
 59.8 
 56.7 
 
 45.2 
 41.9 
 31.3 
 28.2 
 .30.9 
 
 59.5 
 60.8 
 62.7 
 60.2 
 62.1 
 
 64.8 
 63.0 
 49.6 
 60.0 
 59.5 
 68.9 
 
 61.1 
 59.4 
 61.3 
 55.6 
 54.7 
 
 58.0 
 57.2 
 56.8 
 78.9 
 59.4 
 
 57.6 
 58.0 
 59.4 
 58.0 
 58.8 
 
 77.1 
 66.8 
 62.1 
 61.8 
 60.3 
 
 60.1 
 59.8 
 59.5 
 58.5 
 58.9 
 
 58.7 
 58.6 
 57.8 
 57.0 
 57.8 
 
 61.9 
 
 2 
 
 64.3 
 
 3 
 
 45.2 
 
 4 
 
 52.4 
 
 5 
 
 60.8 
 
 6 
 
 59.3 
 
 7 
 
 59.6 
 
 8 
 
 59.2 
 
 9 
 
 57.7 
 
 10 
 
 56.7 
 
 11 
 
 55.5 
 
 12 
 
 57.5 
 
 13 
 
 55.7 
 
 14 
 
 58.1 
 
 15 
 
 57.2 
 
 16 . 
 
 61.2 
 
 17 
 
 62.2 
 
 18 
 
 63.5 
 
 19 
 
 61.7 
 
 20 
 
 59.2 
 
 21 
 
 63.2 
 
 22 
 
 60.6 
 
 23 
 
 65.5 
 
 24 
 
 59.4 
 
 25 
 
 58.7 
 
 26 
 
 59.2 
 
 27 
 
 58.6 
 
 28 
 
 58.3 
 
 29 
 
 57.4 
 
 
 57.8 
 
 31 
 
 57.9 
 
 
 
 Monthly discharge of New Hamakua ditch at Halehaku weir, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Run-ofl 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 January 
 
 54.5 
 54.7 
 61.8 
 59.8 
 55.7 
 54.2 
 56.7 
 61.6 
 61.1 
 68.9 
 78.9 
 65.5 
 
 19.0 
 15.7 
 42.3 
 52.5 
 29.8 
 26.4 
 25.8 
 20.1 
 17.1 
 20.6 
 54.7 
 45.2 
 
 33.6 
 36.2 
 56.0 
 55.4 
 45.5 
 38.0 
 38.3 
 32.6 
 35.0 
 42.9 
 60.3 
 58.9 
 
 1,040 
 
 February 
 
 1,050 
 1,740 
 
 March 
 
 April 
 
 1, 660 
 
 May 
 
 1,410 
 
 June 
 
 1,140 
 
 July 
 
 1,190 
 
 August 
 
 1,010 
 
 September ." 
 
 1,050 
 
 OctoDer 
 
 1,330 
 
 Novemoer 
 
 1,810 
 
 Decemoer 
 
 1,830 
 
 
 
 The year 
 
 78.9 
 
 15.7 
 
 44.4 
 
 16, 300 
 
 
 
200 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 NEW HAMAKUA DITCH AT STATION NO. 1, NEAR HUELO, MAUI. 
 
 Location. — About 1J miles south from Huelo post office at lower portal of first tunnel 
 
 west of Nailiilihaele Stream. 
 Records available. — July 25 to December 31, 1912. 
 Gage. — A reference point, on top of cement-lined ditch, from which measurement 
 
 is made to surface of water; observations made twice daily, at 5.30 a. m. and 5.30 
 
 p. m.; datum unchanged. 
 Channel. — Permanent . 
 
 Discharge measurements. — Made from plank over ditch. 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
 Discharge measurements of New Hamahua ditch at station No. linear Huelo, Maui, in 
 
 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Sept. 21 
 Nov 11 
 
 J. B. Stewart 
 
 Feet. 
 2.78 
 .12 
 
 Sec.-ft. 
 24 4 
 
 do 
 
 94.8 
 
 
 
 Daily gage height, in feet, of New Hamakua ditch at station No. 1, near Huelo, Maui, for 
 
 1912. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 V 
 
 Dec. 
 
 1 
 
 
 2.82 
 
 2.88 
 2.75 
 2.90 
 3.00 
 
 3.50 
 2.98 
 3.25 
 2.25 
 2.25 
 
 1.25 
 1.35 
 1.88 
 1.68 
 .60 
 
 2.20 
 1.95 
 3.25 
 1.10 
 1.10 
 
 .80 
 .25 
 
 1.10 
 .92 
 
 1.72 
 
 1.95 
 2.08 
 2.25 
 2.35 
 2.42 
 
 1.30 
 1.45 
 2.15 
 2.65 
 2.85 
 
 2.91 
 2.90 
 2.95 
 2.35 
 2.22 
 
 2.75 
 3.55 
 2.65 
 1.00 
 .90 
 
 0.10 
 .10 
 .10 
 .20 
 .40 
 
 1.25 
 
 1.25 
 
 1.30 
 
 .10 
 
 .10 
 
 .10 
 .10 
 .50 
 .80 
 1.05 
 
 0.15 
 .10 
 .15 
 .10 
 .10 
 
 .15 
 .20 
 .40 
 .50 
 .55 
 
 .85 
 1.05 
 1.10 
 1.30 
 1.00 
 
 16 
 
 
 1.32 
 1.82 
 2.02 
 2.22 
 2.38 
 
 2.48 
 2.22 
 2.35 
 2.52 
 2.65 
 
 2.58 
 2.52 
 2.65 
 2.00 
 2.10 
 2.12 
 
 2.50 
 2.55 
 2.70 
 2.70 
 2.75 
 
 2.80 
 2.85 
 2.95 
 3.00 
 3.50 
 
 3.10 
 3.12 
 3.10 
 3,05 
 1.60 
 
 1.46 
 2.05 
 2.30 
 2.50 
 2.45 
 
 .10 
 .10 
 .10 
 .10 
 .20 
 
 .35 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .15 
 
 .20 
 .35 
 .45 
 .65 
 .40 
 
 1.15 
 
 2 .. 
 
 
 17 
 
 
 .25 
 
 3... 
 
 
 18 
 
 
 .12 
 
 4 
 
 
 19 
 
 
 .25 
 
 5 
 
 
 20 
 
 
 .10 
 
 6 
 
 
 21 
 
 
 .20 
 
 7 
 
 
 22 
 
 
 .25 
 
 8 
 
 
 23 
 
 
 .70 
 
 9 . 
 
 
 24 
 
 
 .85 
 
 10 
 
 
 25 
 
 2.20 
 
 2.52 
 2.38 
 2.35 
 2.10 
 2.52 
 2.65 
 
 .55 
 
 11 
 
 
 26 
 
 .50 
 
 12 
 
 
 27 
 
 .45 
 
 13 
 
 
 28 
 
 .35 
 
 14 .. 
 
 
 29 
 
 .40 
 
 15 
 
 
 30 
 
 .40 
 
 
 
 31 
 
 .45 
 
 
 
 
 NEW HAMAKUA DITCH AT STATION NO. 2, NEAR HUELO, MAUI. 
 
 Location. — About 1£ miles south of Huelo post office at upper end of iron flume 
 
 crossing Kailua Stream. 
 Records available. — January 14 to December 31, 1912. 
 Gage. — A reference point on top of cement-lined ditch, from which measurements 
 
 are made to surface of water twice daily, at 6.30 a. m. and 4.30 p. m.; datum 
 
 unchanged. 
 Channel. — Permanent. 
 
 Discharge measurements. — Made from flume covering. 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
ISLAND OF MAUI. 
 
 201 
 
 Daily gage height, in feet, of New Hamakua ditch at station No. 2, near Huelo, Maui, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 3.00 
 3.06 
 3.05 
 3.11 
 3.14 
 
 3.20 
 3.21 
 3.16 
 1.20 
 2.74 
 
 2.42 
 2.79 
 .44 
 1.48 
 2.37 
 
 2.61 
 
 2.72 
 
 2.32 
 
 .70 
 
 .05 
 
 .06 
 .10 
 .12 
 .12 
 .14 
 
 .48 
 .04 
 .12 
 .12 
 
 0.08 
 
 .06 
 
 .06 
 
 . .10 
 
 .12 
 
 .10 
 .08 
 .10 
 .09 
 .05 
 
 .06 
 .04 
 . .08 
 .10 
 .12 
 
 .14 
 .08 
 .08 
 .13 
 .14 
 
 .15 
 
 .18 
 .22 
 .44 
 .03 
 
 .00 
 .02 
 .06 
 
 .58 
 .02 
 .06 
 
 0.04 
 .09 
 .03 
 .03 
 .04 
 
 .06 
 .09 
 .08 
 .08 
 .04 
 
 .09 
 .08 
 .08 
 .08 
 .11 
 
 .08 
 .13 
 .14 
 .10 
 .07 
 
 .14 
 .11 
 .12 
 .19 
 .10 
 
 .08 
 .10 
 .15 
 .14 
 .27 
 
 0.36 
 .20 
 .25 
 .18 
 .14 
 
 .20 
 .30 
 
 .28 
 .28 
 .57 
 
 .91 
 
 .15 
 
 1.28 
 
 1.30 
 
 1.62 
 
 1.72 
 1.60 
 1.91 
 
 1.85 
 1.78 
 
 1.80 
 2.08 
 2.25 
 2.T0 
 2.22 
 
 1.28 
 1.38 
 1.08 
 .95 
 1.55 
 1.55 
 
 2.25 
 2.18 
 2.28 
 2.35 
 2.42 
 
 2.52 
 
 2.45 
 2.40 
 2.38 
 1.15 
 
 .68 
 1.50 
 1.40 
 1.35 
 1.48 
 
 1.28 
 
 1.78 
 2.00 
 
 1.48 
 1.88 
 
 1.65 
 1.62 
 1.95 
 2.12 
 1.52 
 
 1.80 
 1.98 
 2.00 
 1.78 
 1.80 
 
 2.22 
 1.75 
 1.22 
 .80 
 1.18 
 
 1.68 
 1.88 
 1.68 
 .38 
 1.02 
 
 .92 
 1.50 
 
 1.02 
 1.58 
 
 1.78 
 
 2.02 
 2.30 
 2.18 
 2.32 
 2.25 
 
 2.38 
 
 2.48 
 
 .95 
 
 2.02 
 
 1.95 
 
 2.22 
 
 1.78 
 1.82 
 1.72 
 1.78 
 1.82 
 
 2.25 
 2.30 
 2.32 
 2.58 
 2.62 
 
 2.72 
 
 2.78 
 2.88 
 2.68 
 2.60 
 
 .78 
 
 1.32 
 
 1.42 
 
 .55 
 
 .38 
 
 .62 
 
 .82 
 
 1.22 
 
 1.12 
 
 1.22 
 
 1.38 
 1.32 
 1.42 
 1.58 
 2.05 
 
 2.32 
 2.32 
 2.42 
 1.62 
 2.02 
 2.05 
 
 1.98 
 
 1.50 
 
 .18 
 
 .12 
 
 .72 
 
 .48 
 
 .15 
 
 .45 
 
 1.48 
 
 1.42 
 
 1.62 
 1.80 
 1.88 
 1.78 
 2.12 
 
 2.32 
 
 2.85 
 2.45 
 2.55 
 2.50 
 
 2.58 
 2.62 
 2.80 
 2.82 
 2.90 
 
 2.85 
 2.90 
 2.92 
 
 2.88 
 .50 
 
 1.52 
 1.45 
 1.71 
 2.21 
 2.11 
 
 2.81 
 2.90 
 2.81 
 2.45 
 2.35 
 
 2.65 
 
 2.40 
 
 2.20 
 
 .20 
 
 .25 
 
 1.32 
 1.70 
 2.05 
 2.30 
 2.15 
 
 .20 
 .20 
 .20 
 .15 
 .10 
 
 .20 
 .10 
 .10 
 .20 
 .20 
 .20 
 
 0.20 
 .20 
 .20 
 .30 
 .30 
 
 1.00 
 
 .85 
 
 1.00 
 
 .20 
 
 .20 
 
 .20 
 .20 
 .30 
 .40 
 
 .75 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 .15 
 .15 
 .20 
 .20 
 .20 
 
 .20 
 .30 
 .30 
 .45 
 .50 
 
 0.15 
 
 2 
 
 
 .10 
 
 3 
 
 
 .15 
 
 4 
 
 
 .10 
 
 5 
 
 
 .10 
 
 6 
 
 
 .15 
 
 7 
 
 
 .20 
 
 8 
 
 
 .25 
 
 9 
 
 
 .30 
 
 10 
 
 
 .35 
 
 11 
 
 
 .50 
 
 12 
 
 
 .65 
 
 13 
 
 
 .85 
 
 14 
 
 2.26 
 2.34 
 
 2.42 
 2.48 
 2.55 
 2.60 
 2.67 
 
 2.72 
 2.75 
 2.80 
 2.39 
 , 2.66- 
 
 2.82 
 2.88 
 2.96 
 2.99 
 3.02 
 2.95 
 
 .75 
 
 15 
 
 .85 
 
 16 
 
 .10 
 
 17 
 
 .85 
 
 18 
 
 .25 
 
 19 
 
 .20 
 
 20 
 
 .35 
 
 21 
 
 .45 
 
 22 
 
 .50 
 
 23 
 
 .60 
 
 24 
 
 .50 
 
 25 
 
 .45 
 
 26..... 
 
 .35 
 
 27 
 
 .35 
 
 28 
 
 .20 
 
 29 
 
 .30 
 
 
 .25 
 
 31 
 
 .25 
 
 
 
 NEW HAMAKUA DITCH AT STATION NO. 3, NEAR HTTELO, MAUI. 
 
 Location. — About 1J miles south of Huelo post office, at lower end of iron flume 
 crossing Kailua Stream. 
 
 Records available. — January 14 to December 31, 1912. 
 
 Gage. — A reference point, on top of cement-lined ditch, from which distance to 
 water surface is measured twice daily, at 6.30 a. m. and 4.30 p. m.; datum 
 unchanged. 
 
 Channel . — Permanent . 
 
 Discharge measurements.— Made from plank over ditch. During low stages the 
 flow at station No. 2 is the same as that of No. 3. During high stages, in order to 
 determine the amount of water overflowing the sides of the iron flume and drop- 
 ping into Kailua Stream, it is necessary to measure the ditch above and below 
 this flume. 
 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
 Discharge measurements of New Hamakua ditch at station No. 
 
 1912. 
 
 near Huelo, Maui, in 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 23 
 
 J. B. Stewart 
 
 Feet. 
 2.57 
 2.69 
 a. 20 
 
 Sec.-ft. 
 25.3 
 
 Sept. 21 
 
 do 
 
 23.5 
 
 Nov. 11 
 
 do 
 
 86.2 
 
 
 
 
 a Gage-height reference mark. 
 
202 
 
 WATEE RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of New Hamakua ditch at station No. 3, near Huelo, Maui, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 3.04 
 3.11 
 3.09 
 3.12 
 3.18 
 
 3.23 
 3.25 
 3.20 
 1.25 
 2.75 
 
 2.46 
 2.83 
 .46 
 1.51 
 2.40 
 
 2.64 
 2.76 
 
 2.86 
 .72 
 .08 
 
 .10 
 .14 
 .16 
 .16 
 .18 
 
 .50 
 .07 
 .14 
 .16 
 
 0.10 
 .10 
 .08 
 .12 
 .15 
 
 .14 
 .12 
 .14 
 .11 
 .08 
 
 .09 
 .07 
 .10 
 .12 
 .14 
 
 .16 
 .10 
 .10 
 .16 
 .16 
 
 .18 
 .20 
 .25 
 .47 
 .06 
 
 .00 
 .05 
 .08 
 .62 
 .04 
 .10 
 
 0.08 
 .12 
 .06 
 .05 
 .07 
 
 .08 
 .12 
 .12 
 .12 
 .06 
 
 .12 
 .10 
 .12 
 .10 
 .14 
 
 .11 
 .16 
 .16 
 .12 
 .10 
 
 .16 
 .14 
 .14 
 .22 
 .12 
 
 .10 
 .14 
 .18 
 .18 
 .28 
 
 0.31 
 .26 
 .24 
 .14 
 .15 
 
 .21 
 .35 
 .29 
 .28 
 1.64 
 
 1.28 
 1.20 
 1.32 
 1.35 
 1.61 
 
 1.72 
 1.78 
 1.80 
 1.78 
 1.88 
 
 1.88 
 2.18 
 1.92 
 2.02 
 2.32 
 
 1.68 
 
 1.52 
 
 .88 
 
 .50 
 
 .34 
 
 1.72 
 
 1.98 
 2.12 
 2.25 
 2.30 
 2.38 
 
 2.48 
 2.45 
 2.30 
 2.42 
 2.10 
 
 2.08- 
 
 1.55 
 
 1.40 
 
 1.40 
 
 1.58 
 
 1.35 
 1.83 
 2.05 
 1.52 
 1.95 
 
 .80 
 1.68 
 2.00 
 
 .82 
 1.58 
 
 1.85 
 2.02 
 2.05 
 2.30 
 2.32 
 
 2.08 
 1.80 
 1.35 
 
 L22 
 
 1.72 
 1.98 
 1.72 
 .42 
 1.08 
 
 .98 
 1.55 
 1.08 
 1.65 
 
 1.82 
 
 2.25 
 2.12 
 2.25 
 2.52 
 2.22 
 
 1.82 
 2.42 
 2.52 
 1.00 
 1.72 
 
 4.68 
 1.85 
 1.90 
 1.82 
 1.88 
 1.98 
 
 2.30 
 
 2.18 
 2.32 
 2.62 
 2.68 
 
 2.78 
 2.88 
 2.98 
 2.72 
 2.78 
 
 .82 
 1.38 
 1.52 
 
 .62 
 
 .48 
 
 .70 
 
 .88 
 
 1.30 
 
 1.32 
 
 1.30 
 
 1.42 
 1.42 
 1.52 
 1.62 
 2.08 
 
 2.38 
 2.38 
 2.48 
 1.68 
 2.12 
 2.12 
 
 1.09 
 .75 
 .30 
 .18 
 .80 
 
 .52 
 .18 
 .48 
 1.98 
 .95 
 
 1.68 
 1.85 
 1.92 
 1.80 
 2.18 
 
 2.35 
 2.38 
 2.52 
 2.55 
 2.55 
 
 2.62 
 
 2.78 
 2.82 
 2.88 
 2.90 
 
 2.90 
 2.95 
 2.98 
 2.95 
 .55 
 
 1.60 
 2.25 
 1.80 
 2.50 
 2.36 
 
 2.91 
 2.92 
 2.85 
 2.90 
 2.85 
 
 2.70 
 
 2.60 
 
 2.20 
 
 .20 
 
 .25 
 
 1.32 
 1.75 
 2.05 
 2.30 
 2.25 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .15 
 .10 
 .10 
 .20 
 .20 
 .20 
 
 0.20 
 .20 
 .20 
 .30 
 .60 
 
 1.00 
 .85 
 
 1.00 
 .20 
 .20 
 
 .20 
 .20 
 .30 
 .40 
 
 .75 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 .15 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .30 
 .30 
 .55 
 .60 
 
 0.15 
 
 2 
 
 
 .10 
 
 3 
 
 
 .15 
 
 4 
 
 
 .10 
 
 5 
 
 
 .20 
 
 6 
 
 
 .25 
 
 7 
 
 
 .20 
 
 8 , 
 
 
 .30 
 
 9 
 
 
 .'40 
 
 10 
 
 
 .35 
 
 11 
 
 
 .60 
 
 12.... 
 
 
 .85 
 
 13 
 
 
 .75 
 
 14 
 
 2.30 
 2.38 
 
 2.48 
 2.51 
 2.57 
 2.62- 
 2.70 
 
 2.72 
 2.78 
 2.80 
 2 42 
 2.68 
 
 2.84 
 2.92 
 2.98 
 3.02 
 3.05 
 2.98 
 
 .85 
 
 15 
 
 .20 
 
 16 
 
 .85 
 
 17 
 
 .85 
 
 18 
 
 .30 
 
 19 .... ., 
 
 .30 
 
 20 
 
 .45 
 
 21 
 
 .45 
 
 22 
 
 .50 
 
 23... 
 
 .50 
 
 24 
 
 .50 
 
 25 
 
 .50 
 
 26 
 
 .35 
 
 27 
 
 .35 
 
 28 
 
 .20 
 
 29 
 
 .30 
 
 30... 
 
 .25 
 
 31... 
 
 .35 
 
 
 
 NEW HAMAKUA DITCH AT STATION NO. 4, NEAR HUELO, MAUI. 
 
 Location. — About 1^ miles south of Huelo post office and immediately above flume 
 
 crossing Oanui Gulch. 
 Records available. — January 14 to December 31, 1912. 
 Gage. — A reference point, chiseled in cement lining of ditch, from which distance 
 
 to water surface is measured twice daily, at 6.30 a. m. and 4.30 p. m.; datum 
 
 unchanged. 
 Discharge measurements. — Made from plank over flume. The difference 
 
 between the flow at stations No. 4 and No. 3 gives low-water flow of Kailua 
 
 Stream. 
 Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
 
 Discharge measurements of New Hamakua ditch at station No. 4, near Huelo, Maui, in 
 
 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 23 
 
 J. B. Stewart 
 
 Feet. 
 4.90 
 2.52 
 
 Sec.-ft. 
 29.7 
 
 Nov. 11 
 
 do.. 
 
 86.2 
 
 
 
 
ISLAND OF MAUI. 
 
 203 
 
 Daily gage height, in feet, of New Hamahua ditch at station No. 4, near Huelo, Maui, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 5.42 
 5.50 
 5.47 
 5.50 
 5.56 
 
 5.55 
 5.58 
 5.52 
 3.66 
 5.14 
 
 4.84 
 5.20 
 2.90 
 3.92 
 
 4.78 
 
 5.15 
 5.12 
 5.22 
 3.18 
 2.50 
 
 2.56 
 2.64 
 2.60 
 2.60 
 2.18 
 
 2.98 
 2.54 
 2.62 
 2.58 
 
 2.52 
 2.50 
 2.48 
 2.55 
 2.64 
 
 2.56 
 2.54 
 2.56 
 2.52 
 2.54 
 
 2.52 
 2.51 
 2.58 
 2.61 
 2.60 
 
 2.66 
 2.58 
 2.56 
 2.60 
 
 2.58 
 
 2.62 
 2.64 
 2.70 
 2.91 
 2.51 
 
 2.46 
 2.50 
 2.54 
 3.07 
 2.51 
 2.54 
 
 2.48 
 2.54 
 2.46 
 2.48 
 2.48 
 
 2.48 
 2.58 
 2.54 
 2.55 
 2.42 
 
 2.52 
 2.52 
 2.58 
 2.52 
 2.58 
 
 2.51 
 2.62 
 2.60 
 2.55 
 2.50 
 
 2.60 
 2.56 
 2.57 
 2.64 
 2.53 
 
 2.52 
 2.54 
 2.60 
 2.58 
 2.70 
 
 2.90 
 2.50 
 2.70 
 2.58 
 2.60 
 
 2.66 
 
 2.82 
 2.68 
 2.95 
 3.10 
 
 3.38 
 3.58 
 3.72 
 3.78 
 4.05 
 
 4.32 
 4.42 
 4.35 
 4.32 
 3.65 
 
 4.25 
 4.40 
 4.68 
 4.50 
 4.68 
 
 4.55 
 2.95 
 3.62 
 4.28 
 3.40 
 4.08 
 
 4.42 
 4.42 
 4.48 
 4.72 
 4.85 
 
 4.90 
 4.88 
 4.65 
 4.80 
 3.55 
 
 3.08 
 4.15 
 3.32 
 3.92 
 4.02 
 
 3.90 
 4.25 
 4.45 
 3.90 
 4.32 
 
 3.72 
 4.05 
 4.38 
 2.95 
 3.92 
 
 4.25 
 4.08 
 4.32 
 
 4.58 
 4.68 
 
 4.50 
 4.28 
 3.80 
 2.92 
 3.62 
 
 4.30 
 4.28 
 4.30 
 3.38 
 4.05 
 
 3.35 
 3.90 
 3.55 
 4.03 
 4.22 
 
 4.38 
 4.38 
 4.48 
 4.58 
 4.72 
 
 4.65 
 4.80 
 4.82 
 3.75 
 4.35 
 
 2.28 
 4.55 
 4.55 
 4.32 
 4.42 
 4.58 
 
 4.45 
 4.62 
 4.80 
 4.88 
 4.92 
 
 4.98 
 5.17 
 5.22 
 4.48 
 4.25 
 
 3.65 
 3.70 
 3.78 
 3.62 
 3.50 
 
 3.20 
 3.58 
 3.72 
 3.68 
 3.78 
 
 3.88 
 3.62 
 3.72 
 3.88 
 4.35 
 
 4.68 
 
 4.88 
 4.98 
 4.00 
 4.42 
 4.32 
 
 4.32 
 2.40 
 2.68 
 2.55 
 3.10 
 
 2.85 
 2.48 
 3.10 
 3.35 
 3.75 
 
 3.98 
 4.12 
 4.28 
 4.32 
 4.42 
 
 4.62 
 4.62 
 4.68 
 4.72 
 
 4.75 
 
 4.82 
 4.88 
 5.10 
 5.22 
 5.38 
 
 5.35 
 5.40 
 5.45 
 5.42 
 3.00 
 
 4.05 
 3.70 
 4.20 
 4.70 
 4.81 
 
 5.15 
 5.11 
 5.11 
 4.60 
 
 4.75 
 
 5.55 
 4.85 
 4.65 
 2.65 
 2.70 
 
 3.80 
 4.30 
 4.60 
 4.80 
 4.65 
 
 2.65 
 2.65 
 2.60 
 2.60 
 2.60 
 
 2.65 
 
 2.60 
 2.60 
 2.60 
 2.60 
 2.60 
 
 2.60 
 2.60 
 2.60 
 2.70 
 2.60 
 
 3.15 
 3.35 
 3.50 
 2.60 
 2.60 
 
 2.60 
 2.60 
 2.75 
 2.80 
 3.20 
 
 2.50 
 2.50 
 2.55 
 2.60 
 2.60 
 
 2.60 
 2.60 
 2.60 
 2.60 
 2.60 
 
 2.60 
 2.70 
 2.70 
 2.95 
 2.55 
 
 2.60 
 
 2 
 
 
 2.60 
 
 3... 
 
 
 2.65 
 
 4 
 
 
 2.60 
 
 5 
 
 
 2.60 
 
 6 
 
 
 2.65 
 
 7 
 
 
 2.60 
 
 8 
 
 
 2.65 
 
 9 
 
 
 2.80 
 
 10 
 
 
 2.85 
 
 11 
 
 
 2.90 
 
 12 
 
 
 3.05 
 
 13 
 
 
 2.75 
 
 14 
 
 4.70 
 
 4.78 
 
 4.82 
 4.90 
 4.97 
 5.04 
 5.10 
 
 5.24 
 5.20 
 5.22 
 4.82 
 5.09 
 
 5.25 
 5.34 
 5.38 
 5.42 
 5.44 
 5.38 
 
 3.15 
 
 
 3.25 
 
 16 
 
 2.60 
 
 17 
 
 3.25 
 
 18 
 
 2.60 
 
 19... 
 
 2.60 
 
 
 2.75 
 
 21 
 
 2.85 
 
 22 
 
 2.90 
 
 23 
 
 2.90 
 
 24 
 
 2.90 
 
 25 
 
 2.80 
 
 26 
 
 2.75 
 
 27 
 
 2.60 
 
 28 
 
 2.55 
 
 29 
 
 2.70 
 
 
 2.65 
 
 31 
 
 2.65 
 
 
 
 NEW HAMAKTJA DITCH AT STATION NO. 5, NEAR HUELO, MAUI. 
 
 Location. — About 1£ miles south of Huelo post office and immediately below flume 
 
 crossing Oanui Gulch. 
 Records available. — January 14, to December 31, 1912. 
 Gage. — A reference point, chiseled in cement lining of ditch, from which distance 
 
 to water surface is measured twice daily, at 6.30 a. m. and 4.30 p. m.; datum 
 
 unchanged. 
 Channel. — Cement lined; permanent. 
 Discharge measurements. — Made from plank at reference point. Difference 
 
 between flow at this station and station No. 4 equals the low-water flow of Oanui 
 
 Stream. 
 Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 
 
 Discharge measurements of New Hamahua ditch at station No. 5, near Huelo, Maui, in 
 
 1912. 
 
 *Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 July 23 
 
 J. B. Stewart 
 
 Feet. 
 5.00 
 5.10 
 2.68 
 
 Sec.-ft. 
 33.3 
 
 Sept. 21 
 
 do 
 
 30.6 
 
 Nov. 11 
 
 do 
 
 111 
 
 
 
 
204 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of New Hamakua ditch at station No. 5, near Huelo, Maui, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 5.50 
 
 5.56 
 5.56 
 5.60 
 5.66 
 
 5.65 
 5.68 
 5.61 
 3.76 
 5.24 
 
 4.94 
 5.30 
 3.02 
 4.02 
 4.88 
 
 5.05 
 5.22 
 5.32 
 3.28 
 2.64 
 
 2.66 
 2.70 
 2.74 
 2.72 
 
 2.78 
 
 3.10 
 2.68 
 2.72 
 2.70 
 
 2.66 
 2.65 
 2.62 
 2.68 
 2.72 
 
 2.69 
 2.67 
 2.69 
 2.66 
 2.66 
 
 2.66 
 2.64 
 2.68 
 2.71 
 2.72 
 
 2.74 
 2.68 
 2.66 
 2.72 
 2.70 
 
 2.73 
 2.77 
 2.82 
 3.04 
 2.64 
 
 2.68 
 2.62 
 2.66 
 3.18 
 2.62 
 2.67 
 
 2.62 
 
 2.67 
 2.64 
 2.64 
 2.66 
 
 2.63 
 
 2.68 
 2.64 
 2.68 
 2.58 
 
 2.66 
 2.63 
 2.70 
 2.63 
 2.70 
 
 2.64 
 2.72 
 2.70 
 2.68 
 2.64 
 
 2.72 
 2.70 
 2.70 
 2.77 
 2.66 
 
 2.65 
 
 2.68 
 2.72 
 2.78 
 2.82 
 
 2.86 
 2.18 
 2.85 
 2.65 
 2.70 
 
 2.65 
 2.82 
 2.72 
 2.90 
 3.12 
 
 3.48 
 
 3.68 
 3.85 
 3.82 
 4.10 
 
 4.20 
 4.28 
 4.42 
 4.42 
 4.02 
 
 4.38 
 4.58 
 4.75 
 4.35 
 4.78 
 
 4.12 
 3.05 
 3.70 
 3.52 
 4.05 
 4.42 
 
 4.45 
 4.62 
 4.78 
 4.82 
 4.92 
 
 4.98 
 4.98 
 4.75 
 4.90 
 3.65 
 
 4.18 
 4.28 
 3.42 
 4.15 
 4.12 
 
 3.85 
 4.32 
 4.32 
 4.00 
 4.42 
 
 3.42 
 4.35 
 4.48 
 3.05 
 3.98 
 
 4.30 
 4.J2 
 4.32 
 4.41 
 
 4.78 
 
 4.60 
 4.38 
 3.90 
 3.02 
 3.72 
 
 4.12 
 4.40 
 4.12 
 2.98 
 3.65 
 
 3.45 
 4.22 
 - 3.65 
 4.18 
 4.32 
 
 4.48 
 4.55 
 4.58 
 4.68 
 4.82 
 
 4.75 
 4.90 
 4.90 
 3.85 
 4.22 
 
 4.75 
 4.65 
 4.65 
 4.38 
 4.50 
 4.62 
 
 4.62 
 4.72 
 4.90 
 4.98 
 5.25 
 
 5.12 
 5.22 
 5.32 
 4.55 
 4.38 
 
 3.70 
 3.88 
 3.92 
 3.72 
 3.10 
 
 3.55 
 3.70 
 3.75 
 3.75 
 3.88 
 
 4.25 
 3.52 
 3.80 
 4.22 
 
 4.45 
 
 4.72 
 4.95 
 5.30 
 4.08 
 4.58 
 4.32 
 
 4.42 
 2.25 
 2.75 
 2.62 
 3.30 
 
 3.15 
 2.52 
 2.95 
 3.36 
 3.85 
 
 4.05 
 4.18 
 4.32 
 4.38 
 4.62 
 
 4.68 
 4.68 
 4.72 
 4.78 
 4.80 
 
 4.87 
 4.98 
 5.16 
 5.32 
 5.42 
 
 5.40 
 
 5.45 
 5.50 
 5.48 
 3.05 
 
 4.30 
 3.72 
 4.46 
 4.76 
 4.96 
 
 5.17 
 5.20 
 5.20 
 4.85 
 4.30 
 
 5.15 
 4.90 
 4.75 
 2.08 
 3.30 
 
 3.90 
 4.25 
 4.60 
 4.30 
 4.80 
 
 2.65 
 2.65 
 2.60 
 2.60 
 2.70 
 
 2.75 
 2.70 
 2.60 
 2.60 
 2.60 
 2.60 
 
 2.60 
 2.60 
 2.70 
 3.70 
 3.45 
 
 3.45 
 3.60 
 2.60 
 2.60 
 2.60 
 
 2.60 
 2.60 
 2.75 
 2.85 
 3.30 
 
 2.50 
 2.50 
 2.50 
 2.55 
 2.60 
 
 2.60 
 
 2.60 
 2.60 
 2.60 
 2.60 
 
 2.60 
 2.60 
 2.80 
 2.60 
 3.05 
 
 2.60 
 
 2 
 
 
 2.60 
 
 3 
 
 
 2.65 
 
 4 
 
 
 2.60 
 
 5 
 
 
 2.60 
 
 6 
 
 
 2.65 
 
 7 
 
 
 2.65 
 
 8 
 
 
 2.85 
 
 9 
 
 
 2.90 
 
 10 
 
 
 2.95 
 
 11 
 
 
 3.00 
 
 12 
 
 
 3.15 
 
 13 
 
 
 3.35 
 
 14 
 
 4.80 
 4.88 
 
 4.92 
 5.00 
 5.07 
 5.12 
 5.20 
 
 5.23 
 5.28 
 5.31 
 4.87 
 5.18 
 
 5.35 
 5.41 
 5.46 
 5.47 
 5.50 
 5.47 
 
 3.25 
 
 15 
 
 3.25 
 
 16 
 
 2.60 
 
 17 
 
 3.35 
 
 18 
 
 2.70 
 
 19 
 
 2.70 
 
 20 
 
 2.85 
 
 21 
 
 2.95 
 
 22 
 
 3.00 
 
 23 
 
 3.00 
 
 24 
 
 3.00 
 
 25 
 
 3.10 
 
 26 
 
 2.85 
 
 27 
 
 2.85 
 
 28 
 
 2.65 
 
 29 ;... 
 
 2.80 
 
 30 
 
 2.75 
 
 31 
 
 2.75 
 
 
 
 OLD HAMAKUA DITCH AT OPANA WEIR, NEAR HUELO, MAUI. 
 
 Location. — About 5 miles northwest of Huelo post office and a short distance below 
 
 the crossing of Opana Stream. 
 Records available. — January 1, 1910, to December 31, 1912. 
 Gage. — Friez automatic clock register. 
 Discharge measurements. — By a Cippoletti weir. 
 Cooperation. — Weir is the property of the East Maui Ditch Co.; records copied from 
 
 Maui Agricultural Co. 
 
 Daily discharge, in million gallons, of Old Hamakua ditch at Opana weir, near Huelo, 
 
 Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.70 
 .70 
 .70 
 .67 
 .55 
 
 .55 
 .46 
 .50 
 .55 
 .93 
 
 0.30 
 .30 
 .25 
 .20 
 .20 
 
 .13 
 
 .10 
 
 3.83 
 
 5.03 
 
 .33 
 
 24.60 
 26.80 
 27.10 
 27.30 
 26.10 
 
 24.70 
 23.60 
 20.40 
 22.20 
 21.40 
 
 9.45 
 8.30 
 22.20 
 23.70 
 25.00 
 
 27.50 
 28.10 
 20.10 
 26.50 
 28.00 
 
 17.80 
 18.00 
 14.70 
 16.70 
 16.20 
 
 15.90 
 13.00 
 13.90 
 8.16 
 2.73 
 
 0.60 
 .60 
 .45 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .30 
 4.13 
 
 0.30 
 
 
 
 
 18.00 
 13. 80 
 18.70 
 16.40 
 11.50 
 
 2.26 
 .60 
 
 1.73 
 28.50 
 28.40 
 
 18.40 
 
 2 
 
 .30 
 
 .30 
 
 1.93 
 
 1.23 
 
 .40 
 
 .40 
 
 2.00 
 
 11.90 
 
 1.80 
 
 
 2.70 
 
 8.53 
 
 6.86 
 
 .86 
 
 .80 
 
 4.21 
 
 .83 
 
 .13 
 
 
 26.70 
 
 3 
 
 35.30 
 
 4 
 
 18.00 
 
 5... 
 
 18.30 
 
 6 
 
 18.80 
 
 7 
 
 21.10 
 
 8 
 
 16.70 
 
 9 
 
 14.10 
 
 10 
 
 12.70 
 
ISLAND OF MAUI. 
 
 205 
 
 Daily discharge, in million gallons^ of Old Hamakua ditch at Opana weir, near Huelo, 
 Maui, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 U . ... 
 
 0.43 
 
 .40 
 .40 
 .40 
 .36 
 
 .30 
 .30 
 .30 
 .37 
 
 .47 
 
 .27 
 .20 
 .23 
 .43 
 .30 
 
 .25 
 .30 
 .35 
 .40 
 .35 
 .30 
 
 0.30 
 
 .30 
 
 5.50 
 
 4.83 
 .47 
 
 .23 
 
 .30 
 
 .50 
 
 11.10 
 
 25.90 
 
 25.10 
 
 26.80 
 19.80 
 16.00 
 15.40 
 
 13.70 
 21.00 
 26.90 
 24.20 
 
 25.10 
 26.30 
 27.50 
 27.10 
 22.30 
 
 17.30 
 19.60 
 25. 30 
 19.60 
 7.95 
 
 16.20 
 13.90 
 10.30 
 5.30 
 
 7.37 
 
 10.80 
 8.13 
 7.73 
 6.20 
 16.80 
 25.80 
 
 27.20 
 26.90 
 26.10 
 26.90 
 27.00 
 
 27.40 
 27.60 
 23.00 
 19.00 
 23.40 
 
 24.40 
 23.40 
 23.50 
 25.10 
 16.70 
 
 26.30 
 25.20 
 21.90 
 19.20 
 16.60 
 
 1.30 
 
 1.20 
 
 .70 
 
 .60 
 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 .60 
 
 .60 
 .60 
 .60 
 .60 
 
 .55 
 
 .52 
 
 8.86 
 
 6.00 
 
 3.30 
 
 .80 
 
 .70 
 
 2.83 
 .70 
 
 1.63 
 .53 
 .33 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .70 
 .63 
 .40 
 9.43 
 .67 
 
 .40 
 .30 
 .20 
 .20 
 .30 
 
 1.80 
 .45 
 
 1.27 
 .30 
 .25 
 
 .20 
 .20 
 .20 
 .20 
 .10 
 
 .10 
 .15 
 .10 
 .10 
 .10 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.96 
 
 
 
 25.80 
 13.80 
 11.40 
 9.23 
 27.50 
 
 27.30 
 27.20 
 27.80 
 27.50 
 25.30 
 
 17.30 
 16.00 
 16.70 
 14.30 
 14.80 
 
 13.10 
 12.20 
 11.70 
 8.95 
 10.70 
 
 9.97 
 
 12 
 
 
 
 5.60 
 
 13 
 
 
 
 
 1.16 
 
 14 
 
 
 
 
 .30 
 
 15 
 
 2.63 
 
 .15 
 .20 
 .20 
 .08 
 
 
 
 .77 
 
 16 
 
 
 
 5.27 
 
 17 
 
 
 
 4.10 
 
 18 
 
 
 
 10.70 
 
 19. . 
 
 
 
 23.40 
 
 20 
 
 
 
 15.80 
 
 21 ■-- 
 
 .05 
 
 
 7.03 
 13.20 
 1.97 
 3.80 
 3.13 
 
 5.87 
 23.70 
 25.60 
 15.30 
 16.10 
 26.80 
 
 23.30 
 
 22 
 
 27.60 
 
 23 
 
 
 
 27.00 
 
 24 
 
 
 
 25.70 
 
 
 
 
 21.60 
 
 26 
 
 
 
 25.80 
 
 27. 
 
 
 
 20.20 
 
 28. 
 
 
 
 19.30 
 
 29. 
 
 
 
 15.90 
 
 30. 
 
 
 
 15.80 
 
 31... 
 
 
 
 14.60 
 
 
 
 
 
 Monthly discharge of Old Hamakua ditch at Opana weir, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 
 million 
 gallons). 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The period 
 
 0.93 
 26.90 
 27.50 
 28.10 
 18.00 
 
 9.43 
 11.90 
 
 2.63 
 
 8.53 
 26.80 
 28.50 
 35.30 
 
 35.30 
 
 0.20 
 .10 
 
 5.30 
 
 8.30 
 .52 
 .20 
 .10 
 .05 
 .13 
 
 1.97 
 .60 
 .30 
 
 .05 
 
 0.43 
 8.59 
 19.00 
 23.20 
 5.41 
 
 .61 
 3.11 
 13.00 
 16.60 
 16.60 
 
 8.36 
 
 13.40 
 249.00 
 591. 00 
 696.00 
 168.00 
 
 29.30 
 
 26.70 
 4.27 
 
 24.90 
 142.00 
 498.00 
 514. 00 
 
 2,510.00 
 
 KALUANUI DITCH AT PUUOMALEI, NEAR HAMAKUAPOKO, MATTI. 
 
 Location. — About 3 miles east of Paia, in Hamakuapoko, just west of Maliko Gulch. 
 
 Records available.— January 1, 1910, to December 31, 1912. 
 
 Discharge measurements. — By 6-foot sharp-crested weir with bottom and end 
 
 contractions. 
 Cooperation. — Weir is the property of the East Maui Ditch Co., but records are 
 
 copied from records kept by Maui Agricultural Co. 
 
206 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in million gallons, of Kaluanui ditch at Puuomalei, near Hamakua- 
 
 poho, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 2. 
 3. 
 4. 
 5. 
 
 6. 
 
 7. 
 8. 
 9. 
 10. 
 
 11. 
 12. 
 13. 
 14. 
 
 15. 
 
 16 
 17. 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 4.56 
 4.56 
 4.56 
 4.03 
 4.03 
 
 4.03 
 3.51 
 3.51 
 3.51 
 3.51 
 
 3.51 
 2.95 
 2.95 
 2.95 
 2.95 
 
 2.95 
 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.50 
 
 2.50 
 2.50 
 2.95 
 2.95 
 
 2.50 
 2.50 
 2.50 
 2.50 
 2.50 
 2.50 
 
 3.51 
 3.51 
 2.10 
 1.85 
 2.02 
 
 2.02 
 2.80 
 3.30 
 3.00 
 3.00 
 
 2.50 
 2.00 
 2.02 
 2.02 
 2.02 
 
 2.02 
 
 2.30 
 3.51 
 2.80 
 3.00 
 
 3.00 
 3.30 
 3.50 
 3.50 
 3.50 
 
 3.50 
 3.50 
 3.50 
 3.50 
 
 3.51 
 3.51 
 3.51 
 3.51 
 3.51 
 
 3.51 
 
 3.51 
 3.51 
 3.51 
 3.51 
 3.51 
 
 3.51 
 3.51 
 3.51 
 4.56 
 4.56 
 
 4.56 
 4.56 
 4.56 
 4.56 
 4.56 
 
 4.56 
 4.56 
 4.56 
 4.56 
 4.56 
 4.56 
 
 4.56 
 4.56 
 4.56 
 4.56 
 4.56 
 
 4.56 
 4.56 
 4.56 
 4.56 
 4.56 
 
 4.56 
 
 4.56 
 4.56 
 4.56 
 4.56 
 
 4.56 
 4.56 
 4.56 
 4.56 
 4.56 
 
 4.56 
 3.51 
 
 3.51 
 3.51 
 3.51 
 3.51 
 3.51 
 
 3.51 
 3.50 
 3.50 
 3.50 
 3.50 
 
 3.50 
 3.50 
 3.50 
 4.03 
 4.03 
 
 4.03 
 4.03 
 2.96 
 2.60 
 2.60 
 
 2.60 
 2.60 
 2.60 
 2.60 
 2.60 
 
 2.96 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.50 
 2.50 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.50 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.02 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.50 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.50 
 
 2.50 
 2.50 
 2.50 
 2.02 
 
 1.61 
 .86 
 .86 
 .86 
 
 0.86 
 .86 
 1.24 
 1.24 
 1.24 
 
 1.24 
 
 .86 
 
 1.24 
 
 1.24 
 
 1.24 
 1.24 
 1.24 
 1.24 
 1.24 
 
 1.24 
 1.24 
 1.24 
 1.24 
 
 .87 
 .87 
 .87 
 .87 
 .87 
 
 .87 
 .87 
 .87 
 .87 
 .87 
 .87 
 
 0.83 
 
 .83 
 .83 
 .83 
 
 2.50 
 2.50 
 2.50 
 2.50 
 2.50 
 
 2.50 
 
 2.50 
 2.50 
 2.50 
 1.61 
 
 1.61 
 1.24 
 1.24 
 1.24 
 1.24 
 
 .32 
 .32 
 .32 
 .32 
 .32 
 
 .32 
 .32 
 .32 
 .32 
 .32 
 
 .32 
 .32 
 .32 
 .32 
 .32 
 
 2.03 
 1.61 
 1.61 
 1.24 
 1.24 
 
 1.24 
 .32 
 .32 
 .32 
 .32 
 
 .32 
 
 .32 
 
 1.61 
 
 2.01 
 
 2.01 
 
 1.61 
 
 2.50 
 
 2.50 
 3.51 
 3.51 
 3.51 
 3.51 
 
 3.51 
 3.51 
 3.51 
 3.51 
 3.51 
 3.51 
 
 3.50 
 3.20 
 2.70 
 2.37 
 2.43 
 
 2.38 
 2.10 
 2.47 
 3.43 
 3.63 
 
 3.93 
 3.83 
 3.53 
 3.50 
 3.50 
 
 3.50 
 3.50 
 3.50 
 3.50 
 3.50 
 
 3.50 
 
 3.70 
 3.97 
 4.00 
 3.80 
 
 3.47 
 
 3.51 
 3.60 
 3.97 
 4.03 
 4.03 
 
 4.03 
 4.03 
 4.03 
 4.03 
 4.03 
 
 4.03 
 4.03 
 4.03 
 4.03 
 4.03 
 
 4.03 
 4.03 
 4.03 
 4.03 
 4.03 
 
 4.03 
 4.03 
 4.03 
 4.03 
 4.03 
 
 4.03 
 4.03 
 4.03 
 4.03 
 4.03 
 4.03 
 
 Monthly discharge of Kaluanui ditch at Puuomalei, near Hamakuapoho , Maui, for 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Run-off 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 
 4.56 
 3.51 
 4.56 
 4.56 
 4.03 
 2.50 
 1.24 
 .83 
 2.50 
 3.51 
 4.00 
 4.03 
 
 2.50 
 
 1.85 
 
 3.51 
 
 3.51 
 
 2.50 
 
 .86 
 
 .86 
 
 .29 
 
 .32 
 
 .32 
 
 2.10 
 
 3.51 
 
 3.11 
 2.83 
 3.95 
 4.24 
 3.01 
 1.95 
 1.05 
 .52 
 1.18 
 1.96 
 3.35 
 4.00 
 
 96.5 
 
 
 82.1 
 
 March 
 
 122.0 
 
 April 
 
 127.0 
 
 May 
 
 93.2 
 
 June 
 
 58.4 
 
 July 
 
 32.5 
 
 August 
 
 16.2 
 
 September 
 
 35.5 
 
 October 
 
 60.8 
 
 November : 
 
 100.0 
 
 December 
 
 124.0 
 
 
 
 The year 
 
 4.56 
 
 .29 
 
 2.59 
 
 947.0 
 
 
 
ISLAND OP MAUI. 
 
 207 
 
 LOWRIE DITCH AT OPANA WEIR, NEAR HUELO, MAUI. 
 
 Location. — About 4 miles northwest of Huelo post office and a short distance west 
 
 of Halehaku Gulch. 
 Records available. — January 1, 1910, to December 31, 1912. 
 Gage. — Friez automatic clock register. 
 
 Discharge measurements. — By sharp-crested weir 16 J feet long, with bottom and 
 j end contractions. 
 Cooperation. — Weir is the property of East Maui Ditch Co., but records are copied 
 
 from records of the Hawaiian Commercial Sugar Co. 
 
 Daily discharge, in million gallons, of Lowrie ditch near Huelo, Maui, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 50.20 
 51.60 
 49.60 
 44.20 
 40.10 
 
 39.40 
 42.70 
 45.20 
 45.10 
 39.70 
 
 36.30 
 34.20 
 32.50 
 31.30 
 29.40 
 
 27.80 
 26.50 
 25.60 
 24.50 
 23.50 
 
 22.90 
 22.00 
 21.00 
 29.40 
 29.30 
 
 22.10 
 20.30 
 19.20 
 18.50 
 17.80 
 20.00 
 
 19.70 
 17.20 
 17.00 
 16.70 
 15.70 
 
 15.40 
 15.00 
 21.80 
 50.00 
 30.20 
 
 27.70 
 29.60 
 47.50 
 45.60 
 41.90 
 
 28.40 
 25.90 
 23. 70 
 45.40 
 50.20 
 
 55.40 
 55.90 
 52.30 
 52.30 
 52.50 
 
 50.10 
 58.10 
 56.90 
 51.00 
 
 55.80 
 56.30 
 55.70 
 53.60 
 52.00 
 
 52.90 
 52.20 
 52.30 
 53.70 
 53.20 
 
 55.70 
 57.60 
 57.20 
 55.10 
 53.50 
 
 54.10 
 55.00 
 54.60 
 54.00 
 54.70 
 
 54.20 
 
 54.20 
 
 52.70 
 
 3.03 
 
 .90 
 
 .70 
 
 .76 
 
 9.83 
 
 51.70 
 
 54.00 
 
 55.50 
 
 55.10 
 55.20 
 55.20 
 57.10 
 9.60 
 
 1.33 
 39.10 
 51.50 
 58.10 
 58.00 
 
 57.90 
 58.80 
 57.90 
 29.80 
 57.70 
 
 58.20 
 57.20 
 56.90 
 56.60 
 57.10 
 
 57.60 
 57.80 
 58.10 
 57.70 
 57.60 
 
 57.70 
 57.30 
 57.20 
 56.90 
 56.70 
 
 53.10 
 53. 10 
 53.30 
 53.30 
 53.30 
 
 53.20 
 53.30 
 56. 00 
 52.80 
 51.30 
 
 52.50 
 48.00 
 45.60 
 44.40 
 40.30 
 
 37.30 
 35.70 
 34.00 
 36.40 
 42.60 
 
 39.50 
 31.60 
 28.60 
 34.90 
 29.80 
 
 38.70 
 55.20 
 52.10 
 49.10 
 49.00 
 44.90 
 
 36.30 
 34.00 
 31.10 
 29.00 
 27.10 
 
 25.70 
 26.30 
 34.10 
 31.40 
 48.20 
 
 54.60 
 48.80 
 53.60 
 49.90 
 48.40 
 
 50.00 
 42.60 
 36.10 
 43.30 
 40.80 
 
 51.80 
 42. 60 
 35.90 
 52.70 
 45.40 
 
 40.80 
 37.40 
 42.70 
 31.60 
 28.90 
 
 33.80 
 41.50 
 51.70 
 52. 70 
 51.80 
 
 43.80 
 40.20 
 36.60 
 55.00 
 48.60 
 
 49. 50 
 46.50 
 52.50 
 50.00 
 47.20 
 
 41.20 
 36.70 
 34.50 
 32.70 
 29.60 
 
 31.60 
 
 28.80 
 26.10 
 43.00 
 42.00 
 
 34.40 
 33.40 
 36.00 
 34. 80 
 31.00 
 26.40 
 
 24.20 
 22.80 
 24.10 
 21.80 
 19.30 
 
 17.90 
 19.70 
 18.30 
 39.00 
 38.50 
 
 50.80 
 46.60 
 43.00 
 45.70 
 54.40 
 
 51.90 
 46.10 
 45.10 
 16.20 
 33.40 
 
 30.20 
 49.50 
 39.40 
 30.00 
 26.00 
 
 26.60 
 29.30 
 26.40 
 40.40 
 34.70 
 39.40 
 
 38.80 
 52.70 
 55.90 
 53.50 
 51.70 
 
 51.90 
 55.50 
 53.00 
 50.90 
 43.10 
 
 37.30 
 33.70 
 30.30 
 27.70 
 25.90 
 
 24.40 
 23.50 
 21.80 
 20.70 
 21.30 
 
 20.10 
 18.20 
 17.50 
 18.90 
 16.00 
 
 15.90 
 15.30 
 14.80 
 17.40 
 49.90 
 
 41.90 
 39.10 
 41.70 
 28.80 
 23.00 
 
 19.80 
 20.00 
 20.70 
 23.00 
 31.30 
 
 22.60 
 40. 40 
 42.70 
 54.40 
 54.50 
 
 48.60 
 46.90 
 35.20 
 28.30 
 30.90 
 
 53.60 
 56.50 
 53.40 
 53.50 
 54.00 
 
 53.80 
 56.80 
 56.00 
 55.30 
 56. 50 
 57.20 
 
 55.60 
 56.30 
 56.60 
 56.00 
 54.20 
 
 53.60 
 55.40 
 55.30 
 57.30 
 56.70 
 
 56.30 
 55.20 
 55. 60 
 55.60 
 54.70 
 
 57.20 
 56.30 
 54.10 
 57.30 
 57.70 
 
 57.50 
 56.50 
 57.10 
 56.80 
 66.60 
 
 56.30 
 56.10 
 56.30 
 65.40 
 55.00 
 
 57.80 
 
 2 
 
 61.10 
 
 3 
 
 56.40 
 
 4 
 
 45.50 
 
 5 
 
 52.30 
 
 6 
 
 47.90 
 
 7 
 
 47.30 
 
 8 
 
 50.10 
 
 9 
 
 45.10 
 
 10 
 
 42.60 
 
 11 
 
 47.40 
 
 12 
 
 44.70 
 
 13 
 
 49.40 
 
 14 
 
 52.00 
 
 15 
 
 50.60 
 
 16 
 
 54.60 
 
 17 
 
 54.10 
 
 18 
 
 55.10 
 
 19 
 
 57.40 
 
 20 
 
 56.10 
 
 21 
 
 57.50 
 
 22 
 
 57.40 
 
 23 
 
 57.10 
 
 24 
 
 67.00 
 
 25... 
 
 57.00 
 
 26 
 
 57.00 
 
 27 
 
 56.70 
 
 28 
 
 56.80 
 
 29 : 
 
 56.40 
 
 30 
 
 56.20 
 
 31. .. 
 
 56.20 
 
 
 
 Monthly discharge of Lowrie ditch near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 Run-off 
 (total in 
 million 
 gallons). 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 51. 60 
 58.10 
 57.60 
 58.80 
 56.00 
 54. 60 
 55.00 
 54.40 
 55. 90 
 57.20 
 57.70 
 57. 80 
 
 58.80 
 
 17.80 
 15. 00 
 .70 
 1.33 
 28. 60 
 25.70 
 26.10 
 16.20 
 14.80 
 19.80 
 53.60 
 42.60 
 
 .70 
 
 31.7 
 36.9 
 46.0 
 52.1 
 45.3 
 40.0 
 40.1 
 33.9 
 32.6 
 41.9 
 56.0 
 53.3 
 
 42.5 
 
 982 
 1,070 
 1,430 
 1,560 
 1,400 
 1,200 
 1,240 
 1,050 
 
 978 
 1.300 
 1,680 
 1,650 
 
 15,500 
 
208 
 
 WATER RESOURCES OF HAWAII, 1912. 
 HAIKU DITCH AT PEAHI WEIR, NEAR HUELO, MAUL 
 
 Location. — In Peahi about 5 miles northwest of Huelo post office. 
 
 Records available. — January 1, 1910, to December 31, 1912. 
 
 Gage. — Friez automatic clock register. 
 
 Discharge. — Measured by sharp-crested weir, 16J feet long, with bottom and end 
 
 constructions. 
 Cooperation. — Weir is property of East Maui Ditch Co.; discharge records are 
 
 copied from records of Hawaiian Commercial & Sugar Co. 
 
 Daily discharge, in million gallons, of Haiku ditch at Peahi weir, near Huelo, Maui, for 
 
 ' 1912. 
 
 Day. 
 
 1 
 
 2 
 
 3 
 
 4 
 
 5 
 
 6 
 
 7 
 
 8 
 
 9 
 
 10 
 
 11 
 
 12 
 
 13 
 
 14 
 
 15 
 
 16 
 
 17 
 
 18 
 
 19 
 
 20 
 
 21 
 
 22 : 
 
 23 
 
 24 
 
 25 
 
 26 
 
 27 
 
 28 
 
 29 
 
 30 
 
 31 
 
 Jan. 
 
 40.30 
 40.30 
 34.80 
 27.00 
 36.90 
 
 23.00 
 18.70 
 9.23 
 3.83 
 3.73 
 
 2.96 
 2.53 
 2.62 
 3.10 
 3.10 
 
 .63 
 1.90 
 3.75 
 2.00 
 2.00 
 
 2.00 
 1.97 
 1.83 
 2.63 
 1.97 
 
 1.90 
 1.83 
 1.83 
 1.83 
 1.83 
 2.00 
 
 Feb. 
 
 2.0ft 
 1.95 
 1.90 
 1.63 
 1.33 
 
 1.10 
 1,10 
 8.97 
 35. 80 
 5.30 
 
 5.17 
 
 3.60 
 
 30.90 
 
 34.90 
 
 20.20 
 
 4.93 
 
 3.15 
 
 3.03 
 
 30.80 
 
 52.10 
 
 53.20 
 53. 30 
 53.30 
 53.30 
 53.30 
 
 36.20 
 53.20 
 53. 30 
 53.40 
 
 Mar. 
 
 53.30 
 53. 30 
 53.30 
 53. 30 
 53.30 
 
 53. 30 
 53. 30 
 53.30 
 53.30 
 53.30 
 
 53.30 
 53.30 
 53.00 
 
 52.80 
 52.80 
 
 53.20 
 53.10 
 53.50 
 51.90 
 53.40 
 
 53.40 
 48.90 
 43. 00 
 49.60 
 53.30 
 
 53.00 
 53. 00 
 47.80 
 13.20 
 47.10 
 51.70 
 
 Apr. 
 
 53. 30 
 53. 30 
 53.30 
 54.70 
 53.40 
 
 53.80 
 53.30 
 53. 30 
 53.30 
 53.30 
 
 53.30 
 54.10 
 53.30 
 53.00 
 53.60 
 
 53.00 
 53. 00 
 53.00 
 53.00 
 53.00 
 
 53.30 
 53.30 
 53. 30 
 53.30 
 53.30 
 
 53.80 
 53.50 
 53.30 
 46.70 
 42.40 
 
 May. 
 
 46.50 
 53.30 
 48.40 
 51. 70 
 51.20 
 
 52.20 
 51.20 
 53.30 
 46.10 
 28.00 
 
 15. 20 
 7.37 
 6.00 
 5.90 
 5.90 
 
 5.80 
 9.77 
 4.30 
 4.30 
 4.30 
 
 4.03 
 2.17 
 1.50 
 1.70 
 1.70 
 
 13.40 
 49.70 
 43.00 
 29.30 
 31.30 
 7.23 
 
 June. 
 
 2.00 
 2.00 
 1.80 
 1.40 
 1.20 
 
 1.63 
 1.00 
 1.13 
 .90 
 16.60 
 
 41.00 
 39.00 
 33.30 
 23.10 
 14.80 
 
 11.50 
 5.20 
 2.05 
 2.26 
 2.03 
 
 19.10 
 11.30 
 3.10 
 13.20 
 16.80 
 
 22.10 
 11.70 
 4.50 
 3.90 
 2.07 
 
 July. 
 
 2.03 
 
 6.43 
 
 11.30 
 
 34.40 
 
 20.50 
 
 8.17 
 
 2.77 
 
 2.33 
 
 48. 70 
 
 25.60 
 
 28.10 
 21.30 
 35.20 
 27.90 
 17.60 
 
 3.60 
 2.57 
 2.13 
 1.43 
 
 15. 30 
 3.03 
 
 2.10 
 1.65 
 1.60 
 1.40 
 .95 
 .60 
 
 Aug. 
 
 0.55 
 .60 
 .50 
 .40 
 .20 
 
 .10 
 
 .35 
 
 .20 
 
 7.40 
 
 2.46 
 
 27.90 
 20.20 
 10.20 
 14.90 
 49.10 
 
 37. 50 
 
 19.60 
 
 9.46 
 
 2.06 
 
 1.73 
 
 1.80 
 10.60 
 5.33 
 1.43 
 1.86 
 
 1.46 
 1.20 
 .76 
 4.33 
 1.40 
 1.46 
 
 Sept. 
 
 1.66 
 33.40 
 49.50 
 41. 50 
 29.00 
 
 35. 80 
 46.90 
 30. CO 
 17.80 
 2.56 
 
 1.93 
 1.33 
 1.33 
 .80 
 .01 
 
 23.30 
 
 Oct. 
 
 14.80 
 11.50 
 10.50 
 2.00 
 1.03 
 
 .50 
 
 "'.*50' 
 .14 
 1.50 
 
 .90 
 
 3.27 
 
 3.30 
 
 43. 00 
 
 35.70 
 
 18.00 
 7.90 
 2.80 
 2.03 
 1.70 
 
 35.60 
 52.80 
 53.30 
 53.30 
 40.90 
 
 39.40 
 53.40 
 53.30 
 53.30 
 53. 20 
 53.20 
 
 Nov. 
 
 52.60 
 51.50 
 53.10 
 48. 00 
 34.70 
 
 42.90 
 34.30 
 15.90 
 44.70 
 45.40 
 
 28.00 
 37.50 
 43.10 
 40.70 
 34.60 
 
 50. 70 
 51. 20 
 47.80 
 53.30 
 53.40 
 
 53.30 
 53.40 
 53.40 
 9.37 
 
 Dec. 
 
 1.50 
 12.00 
 14.20 
 2.73 
 1.73 
 
 1.47 
 1.70 
 .30 
 .20 
 
 .90 
 
 6.00 
 20.70 
 
 34.90 
 34.70 
 48. 20 
 53.70 
 47.10 
 
 48.30 
 53.60 
 53. 50 
 51.40 
 45.20 
 
 50.20 
 49.20 
 49. 50 
 50.10 
 49.40 
 44.70 
 
 Monthly discharge of Haiku ditch at Peahi weir, near Huelo, Maui, for 1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Run-off 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 January 
 
 40.30 
 53.40 
 53.50 
 54.70 
 53.30 
 41.00 
 
 0.63 
 
 1.10 
 
 13.20 
 
 42.40 
 
 1.50 
 
 .90 
 
 9.16 
 24.60 
 50.90 
 52.80 
 23.70 
 10.40 
 12.20 
 
 7.65 
 19.80 
 23.40 
 40. 80 
 27. 60 
 
 284 
 
 Februar y 
 
 712 
 
 March. .'. 
 
 1,580 
 
 April 
 
 1,580 
 736 
 
 
 June 
 
 312 
 
 July 
 
 329 
 
 August 
 
 49.10 
 
 .10 
 
 237 
 
 September 
 
 317 
 
 October 
 
 • 
 
 
 703 
 
 November 
 
 
 
 979 
 
 
 
 
 827 
 
 
 
 
 
 The year 
 
 
 
 25.30 
 
 8,600 
 
 
 
 
ISLAND OF MAUI. 
 
 209 
 
 MISCELLANEOUS MEASUREMENTS. 
 
 The following discharge measurement was made by J. B. Stewart 
 on Koolau ditch at Alo division weir, near Huelo, Maui: 
 
 March 13, 1912: Width, 8.0 feet; area of section, 33.6 square feet; mean velocity, 
 4.12 feet per second; gage height, 1.51 feet; discharge, 139 second-feet. 
 
 PUMPED WATER ON MAUI. 
 
 Considerable water is pumped for irrigation by different planta- 
 tions on the leeward side of Maui. 
 
 Figures showing the amount of water pumped each month by the 
 Pioneer Mill Co. have been furnished to the United States Geological 
 Survey. These data show the amount of underground water raised 
 by eight pumps, seven steam and one electric, located in the vicinity 
 of Lahaina. The measurements were obtained by means of pump 
 displacement. 
 
 Monthly discharge of pump No. 1, station No. 1, Pioneer Mill Co., near Lahaina, Maui, 
 
 for 1912. 
 
 Month. 
 
 Days. 
 
 Hours. 
 
 Million 
 gallons 
 water 
 lifted. 
 
 Million 
 foot-gallons 
 water lifted. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 315 
 
 692J 
 
 356 
 
 155 
 
 488i 
 
 7421 
 
 7071 
 
 712f 
 
 744 
 
 669 
 
 7411 
 
 710* 
 
 577 
 
 7,300 
 
 248 
 130 
 58. 
 193 
 292 
 276 
 274 
 273 
 251 
 272 
 268 
 223 
 
 2,760 
 
 69,500 
 36,400 
 16,500 
 54,000 
 81,700 
 77,300 
 76,600 
 76,500 
 70,200 
 76,100 
 75,200 
 62,600 
 
 773,000 
 
 Monthly discharge of pump No. 2, station No. 1, Pioneer Mill Co., near Lahaina, Maui, 
 
 for 1912. 
 
 January. . . . 
 February . . 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September . 
 
 October 
 
 November . 
 December. . 
 
 Month. 
 
 Days. 
 
 Hours. 
 
 185J 
 11 
 
 Million 
 gallons 
 water 
 lifted. 
 
 41.20 
 2.44 
 
 Million 
 foot-gallons 
 water lifted. 
 
 11,500 
 684 
 
 226f 
 
 678* 
 
 677* 
 
 691J 
 
 621 
 
 701 
 
 636 
 
 1551 
 
 50.30 
 151.00 
 150.00 
 154.00 
 138.00 
 156. 00 
 141. 00 
 
 34.50 
 
 The year. 
 
 219 
 
 4,580 
 
 1,020 
 
 14, 100 
 42,200 
 42, 100 
 43, 000 
 38,600 
 43,600 
 39,500 
 10,700 
 
 286,000 
 
 14694°— wsp 336—14- 
 
 -14 
 
210 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge of pump No. 3, station No. 1, Pioneer Mill Co., near Lahaina, Maui, 
 
 for 1912. 
 
 Month. 
 
 Days. 
 
 Hours. 
 
 Million 
 gallons 
 
 water 
 lifted. 
 
 Million 
 foot-gallons 
 water lifted. 
 
 
 6 
 
 70J 
 
 21.6 
 
 2,210 
 
 
 
 July 
 
 1 
 29 
 30 
 30 
 21 
 
 10 
 3971 
 503£ 
 587 
 374 
 
 3.08 
 122.00 
 155. 00 
 181.00 
 115.00 
 
 314 
 
 August 
 
 12, 500 
 
 
 15, 800 
 
 
 18, 500 
 
 November. 
 
 18,800 
 
 December 
 
 
 
 
 
 
 
 
 117 
 
 1,940 
 
 598 
 
 68,100 
 
 
 Monthly discharge of electric pump, station No. 1, 
 
 for 1912. 
 
 Pioneer Mill Co., near Lahaina, Maui, 
 
 Month. 
 
 Days. 
 
 Hours. 
 
 Million 
 gallons 
 water 
 lifted. 
 
 Million 
 foot-gallons 
 water lifted. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 341 
 
 369 
 
 534i 
 
 6141 
 
 711 
 
 713| 
 
 713* 
 
 742 
 
 717i 
 
 716* 
 
 707 
 
 625f 
 
 260 
 138 
 200 
 240 
 
 267 
 268 
 268 
 
 278 
 
 265 
 235 
 
 26,600 
 14, 100 
 20,400 
 24,500 
 27,200 
 27,300 
 27,300 
 28,400 
 27,400 
 27,400 
 27,000 
 23,900 
 
 302,000 
 
 Monthly discharge of pump No. 1, 
 
 station No. 2, Pioneer Mill Co. 
 for 1912. 
 
 near Lahaina, Maui f 
 
 Month. 
 
 Days. 
 
 Hours. 
 
 Million 
 gallons 
 water 
 lifted. 
 
 Million 
 foot-gallons 
 water lifted. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 670 
 642 
 670 
 654 
 744 
 704 
 712 
 686 
 645 
 732 
 548 
 611 
 
 359 
 
 ,020 
 
 67.0 
 64.2 
 67.0 
 65.4 
 74.4 
 70.4 
 71.2 
 68.6 
 64.5 
 73.2 
 54.8 
 61.1 
 
 802.0 
 
 5,730 
 5,490 
 5,730 
 5,590 
 6,360 
 6,020 
 6,090 
 5,870 
 5,510 
 6,260 
 4,690 
 5.220 
 
 68, 600 
 
ISLAND OF MAUI. 
 
 211 
 
 Monthly discharge of pump No. 2, station No. 2, Pioneer Mill Co., near Lahaina, Maui, 
 
 for 1912. 
 
 Month. 
 
 Days. 
 
 Hours. 
 
 Million 
 
 gallons 
 water 
 lifted. 
 
 Million 
 foot-gallons 
 water lifted. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 358 
 
 652 
 641J 
 656 
 654 
 
 744 
 720 
 
 573 
 
 548 
 509 
 
 7,760 
 
 65.2 
 
 64.2 
 65.6 
 65.4 
 74.4 
 72.0 
 69.8 
 67.1 
 57.3 
 69.6 
 54.8 
 50.9 
 
 776 
 
 5,570 
 5,480 
 5,610 
 5,590 
 6,360 
 6,160 
 5,970 
 5,730 
 4,900 
 5,950 
 4,690 
 4,350 
 
 400 
 
 Monthly 
 
 e of pump No. 1, station No. 3, Pioneer Mill Co., near Lahaina, Maui, 
 for 1912. 
 
 Month. 
 
 Days. 
 
 Hours. 
 
 Million 
 gallons 
 water 
 lifted. 
 
 Million 
 foot-gallons 
 water lifted. 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The period 
 
 240 
 694 
 735 
 736 
 710 
 727 
 691 
 211 
 
 66.4 
 206.0 
 229.0 
 265.0 
 255.0 
 265.0 
 242.0 
 
 73.4 
 
 206 
 
 1,600 
 
 28, 500 
 88, 700 
 98,500 
 114, 000 
 109,000 
 114,000 
 104, 000 
 "31,. 600 
 
 688, 000 
 
 Monthly 
 
 of pump No. 2, station No. 3, Pioneer Mill Co. 
 for 1912. 
 
 near Lahaina, Maui, 
 
 Month. 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November...... 
 
 December 
 
 The period 
 
 Days. 
 
 210 
 
 Hours. 
 
 737 
 739 
 715 
 730 
 700 
 143 
 
 5,040 
 
 Million 
 gallons 
 water 
 lifted. 
 
 136 
 209 
 231 
 260 
 256 
 262 
 245 
 48.5 
 
 1,650 
 
 Million 
 foot-gallons 
 water lifted. 
 
 58,400 
 90,200 
 99, 200 
 112, 000 
 110, 000 
 112, 000 
 105, 000 
 20,900 
 
 708,000 
 
212 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 ISLAND OF HAWAII. 
 
 HILO GROUP OF STREAMS. 
 
 WAILUKU RIVER NEAR HILO, HAWAII. 
 
 Location. — A short distance above Hilo Electric Light Co. power canal intake and 
 
 about 2 miles west of Hilo. 
 Records available.— March 21, 1911, to December 31, 1912. 
 Gage. — Vertical staff and Barrett & Lawrence hydro-chronograph; datum unchanged 
 
 since gage was established. 
 Channel. — Probably slightly shifting. 
 
 Discharge measurements. — Made from cable car 120 feet below gage. 
 Accuracy. — Results considered good. 
 
 Discharge measurements of Wailuku River near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Jan. 31« 
 July 12 
 
 C. H.Pierce 
 
 Pierce and Chris- 
 
 Feet. 
 &5.67 
 
 7.04 
 5.80 
 5.20 
 
 Sec.-ft. 
 36 
 
 475 
 170 
 102 
 
 Oct. 18 
 31 
 
 Dec. 7 
 23 
 
 E. O. Christiansen. 
 do 
 
 Feet. 
 6.14 
 8.20 
 6.85 
 14.7 
 
 Sec.-ft. 
 225 
 780 
 
 do 
 
 do 
 
 360 
 
 Sept. 16 
 20 
 
 E. 0. Christiansen, 
 .do 
 
 5,620 
 
 
 
 
 a Measurement made by wading 150 feet above gage. 
 
 b Backwater on gage caused by temporary sandbag dam at intake of power canal. 
 
 Daily gage height, in feet, of Wailuku River near Hilo, Hawaii, for 1912. 
 [J. Goorko, observer.] 
 
 Day. 
 
 Feb. Mar. Apr. May. June. July. Aug 
 
 Oct. Nov. Dec. 
 
 2 
 
 
 3 
 
 
 4 
 
 
 5 
 
 
 6 
 
 
 7 
 
 
 8 
 
 
 9 
 
 
 10 
 
 
 11 
 
 
 12 
 
 
 13 
 
 
 14 
 
 
 15 
 
 
 16 
 
 
 17 
 
 
 18 
 
 
 19 
 
 
 20 
 
 6.0 
 
 21 
 
 15.0 
 
 22 
 
 15.5 
 
 23 
 
 13.0 
 
 24 
 
 11.0 
 
 25 
 
 9.0 
 
 26 
 
 7.6 
 
 27 
 
 7.25 
 
 28 
 
 7.20 
 
 29 
 
 7.20 
 
 30... 
 
 
 31 
 
 
 6.40 
 6.06 
 
 5.78 
 5.58 
 
 5.42 
 5.29 
 5.20 
 5.23 
 5.28 
 
 5.84 
 7.89 
 8.58 
 8.84 
 7.71 
 
 7.04 
 
 7.88 
 9.96 
 8.26 
 7.62 
 
 7.16 
 6.78 
 6.79 
 6.42 
 6.13 
 
 5.92 
 5.65 
 5.46 
 5.32 
 5.74 
 7.33 
 
 6.32 
 5.95 
 5.86 
 
 6.60 
 11.34 
 
 9.47 
 10.02 
 
 8.73 
 
 8.16 
 7.42 
 7.18 
 6.76 
 6.67 
 
 7.56 
 7.04 
 6.87 
 6.93 
 
 6.33 
 
 6.10 
 7.07 
 7.41 
 7.60 
 
 7.63 
 7.36 
 6.98 
 6.60 
 6.41 
 
 3.26 
 
 8.00 
 7.50 
 
 7.80 
 7.30 
 6.80 
 6.53 
 6.22 
 
 5.98 
 5.72 
 5.58 
 5.40 
 5.22 
 
 5.14 
 5.12 
 5.03 
 4.93 
 4.91 
 
 4.94 
 4.85 
 4.74 
 4.76 
 4.62 
 
 4.63 
 4.59 
 4.52 
 4.50 
 4.44 
 4.39 
 
 4.38 
 4.37 
 4.27 
 4.26 
 4.27 
 
 4.14 
 4.11 
 4.22 
 4.30 
 
 4.77 
 
 5.85 
 5.19 
 5.09 
 
 4.88 
 4.77 
 
 4.77 
 4.61 
 4.53 
 4.56 
 4.61 
 
 5.02 
 4.84 
 4.62 
 5.23 
 5.34 
 
 5.10 
 
 5.79 
 5.81 
 5.39 
 5.27 
 
 5.15 
 5.60 
 7.07 
 6.27 
 5.95 
 
 5.76 
 5.49 
 5.28 
 5.15 
 6.13 
 
 8.30 
 6.99 
 6.51 
 7.17 
 6.40 
 
 6.02 
 5.85 
 5.70 
 5.55 
 5.40 
 
 5.30 
 5.25 
 5.20 
 5.56 
 5.34 
 
 5.14 
 5.10 
 5.04 
 5.13 
 5.06 
 4.94 
 
 4.88 
 4.88 
 5.50 
 5.77 
 5.39 
 
 5.07 
 6.02 
 4.99 
 4.97 
 
 4.93 
 4.98 
 4.96 
 5.23 
 
 5.05 
 4.94 
 4.95 
 5.27 
 4.99 
 
 4.91 
 4.82 
 4.82 
 4.91 
 4.81 
 
 4.77 
 5.14 
 4.98 
 4.86 
 4.80 
 4.81 
 
 6.24 
 7.27 
 10.20 
 12.45 
 9.40 
 
 8.10 
 7.40 
 7.00 
 6.90 
 6.57 
 
 6.22 
 6.56 
 6.02 
 6.02 
 5.78 
 
 5.77 
 5.55 
 5.42 
 5.33 
 5.21 
 
 5.29 
 
 5.25 
 5.08 
 5.02 
 4.94 
 
 4.89 
 4.83 
 4.78 
 4.72 
 5.12 
 
 5.25 
 4.91 
 4.87 
 4.82 
 4.71 
 
 4.65 
 4.60 
 4.59 
 4.63 
 
 4.79 
 5.53 
 5.16 
 5.04 
 5.28 
 
 5.39 
 8.13 
 6.11 
 6.64 
 7.26 
 
 7.11 
 10.32 
 11.31 
 8.40 
 7.43 
 
 9.30 
 13.57 
 10.82 
 10.41 
 8.89 
 8.76 
 
 8.24 
 8.12 
 9.72 
 7.93 
 7.74 
 
 7.61 
 7.36 
 7.42 
 8.3 
 10.6 
 
 10.8 
 8.84 
 8.15 
 7.58 
 7.13 
 
 9.28 
 8.73 
 9.04 
 7.82 
 
 7.44 
 7.20 
 7.21 
 7.00 
 6.72 
 
 6.67 
 7.00 
 7.04 
 6.78 
 
 7.92 
 8.91 
 
 7.92 
 7.30 
 
 7.16 
 6.82 
 6.48 
 
 6.26 
 6.02 
 5.82 
 5.73 
 5.73 
 
 5.96 
 5.73 
 5.61 
 5.94 
 
 6.48 
 8.85 
 14.26 
 11.64 
 8.75 
 
 9.12 
 8.19 
 7.52 
 7.20 
 6.93 
 6.71 
 
ISLAND OF HAWAII. 213 
 
 Daily discharge, in second-feet, of Wailuku River near Rilo, Hawaii, for 1912 . 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 i ; 
 
 
 334 
 273 
 213 
 169 
 143 
 
 124 
 111 
 102 
 105 
 110 
 
 178 
 661 
 934 
 1,060 
 601 
 
 415 
 657 
 1,720 
 798 
 574 
 
 447 
 354 
 
 357 
 
 277 
 224 
 
 190 
 152 
 129 
 114 
 164 
 492 
 
 258 
 195 
 181 
 291 
 
 378 
 
 314 
 2,740 
 1,420 
 1,760 
 1,010 
 
 760 
 517 
 452 
 350 
 329 
 
 327 
 556 
 415 
 376 
 390 
 
 260 
 219 
 423 
 514 
 568 
 
 577 
 500 
 403 
 314 
 
 275 
 
 247 
 378 
 359 
 700 
 539 
 
 630 
 484 
 359 
 299 
 240 
 
 200 
 161 
 143 
 122 
 104 
 
 97 
 95 
 
 87 
 78 
 77 
 
 79 
 72 
 65 
 66 
 57 
 
 58 
 55 
 51 
 50 
 46 
 43 
 
 43 
 42 
 37 
 36 
 37 
 
 33 
 32 
 35 
 
 38 
 67 
 
 180 
 
 101 
 
 92 
 
 75 
 67 
 
 67 
 57 
 52 
 54 
 57 
 
 86 
 72 
 57 
 105 
 116 
 
 93 
 171 
 174 
 121 
 109 
 
 98 
 145 
 423 
 249 
 195 
 
 166 
 132 
 110 
 98 
 224 
 
 814 
 406 
 295 
 449 
 273 
 
 206 
 180 
 158 
 139 
 122 
 
 112 
 107 
 102 
 140 
 116 
 
 97 
 93 
 88 
 96 
 89 
 79 
 
 75 
 
 75 
 
 133 
 
 168 
 
 121 
 
 90 
 86 
 83 
 
 82 
 82 
 
 82 
 78 
 82 
 81 
 105 
 
 88 
 79 
 80 
 109 
 83 
 
 77 
 70 
 70 
 77 
 70 
 
 67 
 97 
 82 
 73 
 69 
 70 
 
 243 
 
 476 
 
 1,890 
 
 3,660 
 
 1,380 
 
 737 
 511 
 405 
 383 
 308 
 
 240 
 306 
 206 
 206 
 169 
 
 168 
 139 
 124 
 115 
 103 
 
 111 
 
 107 
 91 
 86 
 79 
 
 75 
 71 
 68 
 63 
 95 
 
 107 
 77 
 74 
 70 
 63 
 
 59 
 56 
 55 
 58 
 61 
 
 68 
 137 
 98 
 88 
 110 
 
 121 
 748 
 221 
 323 
 473 
 
 434 
 
 1,970 
 
 2,720 
 
 855 
 
 619 
 
 1,320 
 4,620 
 2,330 
 2,040 
 1,080 
 1,020 
 
 790 
 745 
 1,570 
 675 
 611 
 
 571 
 500 
 517 
 814 
 2,170 
 
 2,310 
 
 1,060 
 
 756 
 
 562 
 
 439 
 
 657 
 1,310 
 1,010 
 1,170 
 
 637 
 
 522 
 457 
 460 
 405 
 341 
 
 329 
 405 
 415 
 354 
 403 
 
 671 
 
 2 
 
 
 1,100 
 
 3 
 
 
 1,040 
 
 4 
 
 
 671 
 
 5 
 
 
 484 
 
 6 
 
 
 390 
 
 7 
 
 
 381 
 
 8 
 
 
 447 
 
 9 
 
 
 364 
 
 10 .. 
 
 
 . 289 
 
 11 
 
 
 247 
 
 12 
 
 
 206 
 
 
 
 175 
 
 14 
 
 
 162 
 
 
 
 162 
 
 16 
 
 
 197 
 
 17 
 
 
 162 
 
 
 
 146 
 
 19 
 
 
 193 
 
 
 5,880 
 6,320 
 4,130 
 2,470 
 1,150 
 
 568 
 470 
 457 
 457 
 
 395 
 
 21 
 
 289 
 
 22 
 
 1,060 
 
 
 5,220 
 
 24 
 
 2,980 
 
 
 1,020 
 
 
 1,210 
 
 27.. 
 
 771 
 
 
 545 
 
 29 
 
 457 
 
 
 390 
 
 31 
 
 
 338 
 
 
 
 
 Monthly discharge of Wailuku River near Hilo, Hawaii, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 Run-off 
 (total in 
 aere-feet). 
 
 Accu- 
 racy. 
 
 February. . 
 
 March 
 
 April. 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September. 
 October... 
 November. 
 December. 
 
 6,320 
 
 814 
 168 
 3,660 
 4,620 
 2,310 
 5,220 
 
 The period . 
 
 203 
 102 
 181 
 43 
 32 
 79 
 67 
 63 
 55 
 329 
 146 
 
 2,210.0 
 393.0 
 569.0 
 195.0 
 
 76.9 
 194.0 
 
 86.6 
 420.0 
 709.0 
 765.0 
 715.0 
 
 43,800 
 24,200 
 33,900 
 12,000 
 
 4,580 
 11,900 
 
 5,320 
 25,000 
 43,600 
 45,500 
 44,000 
 
 294, 000 
 
 HONOLII RIVER AT KAIWIKI, NEAR HILO, HAWAII. 
 
 Location. — One-half mile north of Kaiwiki and 6 miles west of Hilo, at an elevation 
 
 of about 1,425 feet. 
 Records available. — June 1, 1911, to December 31, 1912. 
 Gage. — Vertical staff and Barrett & Lawrence hydro- chronograph; datum unchanged 
 
 since gage was established. 
 Channel. — Probably slightly shifting. 
 
 Discharge measurements. — Made from small footbridge 40 feet below gage. 
 Accuracy. — Results considered good. 
 
214 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 measurements of Honolii River at Kaiwiki, near Hilo, Hawaii, in 1912. 
 
 Date 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 1 
 
 Oct. 17 
 
 21 
 
 C. H.Pierce 
 
 E. 0. Christiansen. 
 do 
 
 Feet. 
 4.79 
 6.68 
 5.95 
 10.0 
 8.8 
 
 Sec-ft. 
 2.71 
 
 272 
 
 121 
 2,100 
 1,100 
 
 Oct. 30 
 
 Nov. 23 
 30 
 
 Dec. 13 
 31 
 
 E. O. Christiansen.. 
 
 do 
 
 do 
 
 Feet. 
 6.59 
 5.93 
 5.46 
 5.24 
 5.50 
 
 Sec-ft 
 
 255 
 
 125 
 
 52 
 
 23 
 23 
 
 do 
 
 do.... 
 
 do 
 
 do 
 
 28 
 63.3 
 
 
 
 
 
 Daily gage height, in feet, of Honolii River at Kaiwiki, near Hilo, Hawaii, for 1912. 
 
 [J. Goorko, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 
 2. 
 3. 
 4. 
 5. 
 
 6. 
 
 7. 
 8, 
 9 
 10. 
 
 11. 
 
 12. 
 1>3; 
 14. 
 15. 
 
 16 
 17. 
 18. 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 5.08 
 5.04 
 5.02 
 5.00 
 4.98 
 
 4.97 
 4.92 
 4.90 
 4.88 
 
 4.83 
 4.82 
 4.8.0 
 4.79 
 4.78 
 
 4.76 
 4.75 
 4.74 
 4.72 
 4.70 
 4.68 
 
 4.80 
 4.80 
 4.80 
 4.80 
 4.80 
 
 4.80 
 4.80 
 4.80 
 4.80 
 4.80 
 
 4.80 
 4.(79 
 
 4.89 
 4.98 
 4.95 
 
 4.90 
 4.84 
 4.80 
 4.91 
 5.84 
 
 8.13 
 9.16 
 8.41 
 6.96 
 6.09 
 
 5.56 
 5.74 
 
 5.11 
 5.13 
 5.26 
 5.33 
 5.34 
 
 6.02 
 6.86 
 6.84 
 6.68 
 5.93 
 
 5.64 
 6.39 
 7.43 
 6.28 
 6.02 
 
 5.84 
 5.55 
 5.60 
 5.46 
 5.38 
 
 5.34 
 5.25 
 5.18 
 5.12 
 5.72 
 
 8.46 
 7.23 
 7.32 
 6.76 
 
 6.41 
 5.94 
 5.77 
 5.56 
 5.72 
 
 5.82 
 6.28 
 5.90 
 5.75 
 5.88 
 
 6.14 
 
 6.01 
 5.94 
 6.22 
 6.35 
 
 6.28 
 6.09 
 5.81 
 5.58 
 5.47 
 
 5.46 
 5.70 
 5.92 
 6.55 
 6.36 
 
 6.55 
 
 5.86 
 5.62 
 5.49 
 5.38 
 
 5.30 
 5.24 
 5.20 
 5.16 
 5.08 
 
 5.06 
 5.09 
 5.03 
 5.00 
 4.99 
 
 5.04 
 5.04 
 5.00 
 5.00 
 5.00 
 
 5.00 
 5.02 
 5.01 
 5.00 
 4.98 
 4.96 
 
 4.94 
 4.99 
 5.00 
 5.00 
 4.99 
 
 4.97 
 4.97 
 5.03 
 5.40 
 5.53 
 
 5.62 
 5.62 
 5.44 
 5.30 
 
 5.22 
 5.17 
 5.09 
 5.07 
 5.14 
 
 5.80 
 5.80 
 
 5.30 
 
 5.67 
 6.39 
 5.85 
 5.73 
 
 5.58 
 5.43 
 5.32 
 5.28 
 5.78 
 
 6.62 
 5.92 
 5.72 
 6.07 
 5.57 
 
 5.41 
 5.34 
 5.32 
 5.26 
 5.23 
 
 5.12 
 5.10 
 6.09 
 5.74 
 5.42 
 
 5.28 
 5.24 
 5.24 
 5.25 
 5.24 
 
 5.20 
 5.20 
 5.29 
 5.32 
 5.49 
 
 5.27 
 5.19 
 5.23 
 5.42 
 5.23 
 
 5.15 
 5.10 
 5.08 
 5.16 
 5.12 
 
 5.08 
 5.41 
 5.25 
 5.22 
 5. 17 
 5.23 
 
 6.03 
 6.63 
 8.49 
 8.74 
 6.25 
 
 5.99 
 6.42 
 5.74 
 5.63 
 5.48 
 
 5.78 
 5.44 
 5.47 
 5.41 
 
 5.41 
 5.30 
 5.28 
 5.20 
 5.16 
 
 5.15 
 5.15 
 5.08 
 5.06 
 5.10 
 
 5.09 
 5.06 
 5.04 
 5.02 
 
 5.47 
 
 5.39 
 5.22 
 5.26 
 5.20 
 5.12 
 
 5.10 
 5.05 
 5.04 
 5.05 
 5.11 
 
 5.39 
 
 5.48 
 5.28 
 5.33 
 5.56 
 
 6.47 
 6.52 
 5.68 
 6.03 
 6.60 
 
 6.01 
 
 7.96 
 8.25 
 6.38 
 5.80 
 
 7.29 
 8.62 
 7.43 
 7.39 
 6.47 
 6.91 
 
 6.19 
 6.02 
 7.49 
 6.05 
 
 5.64 
 5.51 
 5.50 
 7.63 
 9.01 
 
 7.30 
 6.37 
 6.10 
 
 5.74 
 5.59 
 
 6.92 
 7.19 
 7.06 
 0.54 
 5.96 
 
 5.89 
 5.86 
 6.00 
 5.78 
 5.60 
 
 5..51 
 5.48 
 5.91 
 5.81 
 5.94 
 
 6.72 
 6.83 
 6.28 
 5.77 
 5.56 
 
 5.52 
 5.82 
 5.87 
 5.64 
 5.45 
 
 5.34 
 5.26 
 5.22 
 5.25 
 5.32 
 
 5.50 
 5.35 
 5.37 
 
 5.85 
 6.42 
 
 6.17 
 7.90 
 9.54 
 7.51 
 6.19 
 
 6.94 
 6.14 
 
 5.77 
 5.69 
 5.58 
 5.62 
 
 Daily discharge, in second-feet, of Honolii River at Kaiwiki, near Hilo, Hawaii, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 52.0 
 
 3.0 
 
 80 
 
 120 
 
 53.0 
 
 8.6 
 
 35 
 
 19 
 
 140 
 
 45 
 
 170 
 
 44.0 
 
 3.0 
 
 76 
 
 100 
 
 86.0 
 
 10.0 
 
 82 
 
 17 
 
 263 
 
 27 
 
 138 
 
 37.0 
 
 3.0 
 
 54 
 
 90 
 
 120.0 
 
 11.0 
 
 210 
 
 151 
 
 937 
 
 31 
 
 509 
 
 32.0 
 
 • 3.0 
 
 35 
 
 180 
 
 245.0 
 
 11.0 
 
 108 
 
 92 
 
 1,070 
 
 25 
 
 144 
 
 28.0 
 
 3.0 
 
 24 
 
 200 
 
 204.0 
 
 11.0 
 
 90 
 
 48 
 
 182 
 
 19 
 
 127 
 
 25.0 
 
 3.0 
 
 18 
 
 190 
 
 245.0 
 
 9.8 
 
 69 
 
 33 
 
 132 
 
 17 
 
 78 
 
 23.0 
 
 3.0 
 
 19 
 
 921 
 
 110.0 
 
 9.8 
 
 50 
 
 29 
 
 216 
 
 14 
 
 59 
 
 20.0 
 
 3.0 
 
 31 
 
 427 
 
 75.0 
 
 13.0 
 
 37 
 
 29 
 
 92 
 
 13 
 
 58 
 
 18.0 
 
 3.0 
 
 38 
 
 454 
 
 57.0 
 
 46.0 
 
 33 
 
 30 
 
 76 
 
 14 
 
 557 
 
 16.0 
 
 3.0 
 
 39 
 
 293 
 
 44.0 
 
 62.0 
 
 ■ 97 
 
 29 
 
 56 
 
 18 
 
 1,250 
 
 16.0 
 
 3.0 
 
 138 
 
 214 
 
 35.0 
 
 140.0 
 
 261 
 
 25 
 
 54 
 
 45 
 
 448 
 
 13.0 
 
 2.8 
 
 318 
 
 123 
 
 29.0 
 
 75.0 
 
 120 
 
 35 
 
 97 
 
 56 
 
 206 
 
 12.0 
 
 6.6 
 
 312 
 
 96 
 
 25.0 
 
 75.0 
 
 89 
 
 34 
 
 51 
 
 33 
 
 153 
 
 11.0 
 
 10.0 
 
 274 
 
 66 
 
 22.0 
 
 51.0 
 
 147 
 
 37 
 
 54 
 
 38 
 
 92 
 
 10.0 
 
 9.0 
 
 121 
 
 89 
 
 16.0 
 
 35.0 
 
 68 
 
 57 
 
 47 
 
 66 
 
 71 
 
 Dec. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 284 
 310 
 188 
 
 61 
 103 
 111 
 
 78 
 52 
 
 39 
 31 
 27 
 30 
 37 
 
ISLAND OF HAW An. 
 
 215 
 
 Daily discharge, in second-feet, of Honolii River at Kaiwiki, near Hilo, Hawaii, for 
 
 1912— Continued. 
 
 Bay. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 9.8 
 7.8 
 7.0 
 6.2 
 5.4 
 
 4.2 
 3.8 
 3.0 
 2.8 
 2.6 
 
 2.2 
 
 2.0 
 1.8 
 1.4 
 1.0 
 .8 
 
 7.0 
 4.6 
 3.0 
 7.4 
 106.0 
 
 760.0 
 1,360.0 
 895.0 
 346.0 
 151.0 
 
 66.0 
 92.0 
 90.0 
 90.0 
 
 78 
 210 
 490 
 188 
 138 
 
 106 
 65 
 72 
 53 
 44 
 
 39 
 30 
 23 
 19 
 
 89 
 150 
 
 103 
 188 
 116 
 93 
 113 
 
 161 
 136 
 123 
 176 
 202 
 
 188 
 151 
 102 
 69 
 54 
 
 15.0 
 16.0 
 13.0 
 11.0 
 11.0 
 
 13.0 
 13.0 
 11.0 
 11.0 
 11.0 
 
 11.0 
 12.0 
 12.0 
 11.0 
 10.0 
 9.4 
 
 27.0 
 23.0 
 16.0 
 15.0 
 20.0 
 
 30.0 
 30.0 
 30.0 
 40.0 
 40.0 
 
 35.0 
 
 130.0 
 110.0 
 100.0 
 100.0 
 
 47 
 39 
 37 
 31 
 28 
 
 30 
 31 
 32 
 33 
 34 
 
 35 
 34 
 30 
 29 
 
 28 
 19 
 
 32 
 24 
 28 
 
 48 
 28 
 
 21 
 17 
 16 
 22 
 19 
 
 16 
 47 
 30 
 27 
 23 
 28 
 
 47 
 35 
 33 
 25 
 22 
 
 21 
 21 
 16 
 15 
 17 
 
 16 
 15 
 13 
 12 
 54 
 
 227 
 238 
 83 
 140 
 256 
 
 136 
 685 
 816 
 208 
 100 
 
 445 
 1,000 
 490 
 477 
 227 
 331 
 
 334 
 415 
 376 
 243 
 127 
 
 114 
 110 
 
 134 
 
 97 
 72 
 
 59 
 56 
 118 
 102 
 123 
 
 58 
 
 17 
 
 40 
 
 18 
 
 43 
 
 19 
 
 108 
 
 20 
 
 216 
 
 21 
 
 166 
 
 22 
 
 660 
 
 23 
 
 1,670 
 
 24 
 
 515 
 
 25 
 
 170 
 
 26 
 
 340 
 
 27 
 
 161 
 
 28 -- 
 
 96 
 
 29 
 
 85 
 
 
 69 
 
 31 
 
 75 
 
 
 
 Monthly discharge of Honolii River at Kaiwiki, near Hilo, Hawaii, for 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Maximum. Minimum. Mean 
 
 Run-off 
 (total in 
 acre-feet). 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 52 
 
 1,360 
 
 490 
 
 921 
 
 245 
 
 140 
 
 261 
 
 151 
 
 1,070 
 
 1,000 
 
 1,250 
 
 1,670 
 
 1,670 
 
 0.8 
 
 2.8 
 
 18.0 
 
 54.0 
 
 9.4 
 
 8.6 
 
 19.0 
 
 16.0 
 
 12.0 
 
 13.0 
 
 56.0 
 
 27.0 
 
 13.5 
 139.0 
 109.0 
 184.0 
 50.2 
 43.8 
 64.3 
 34.9 
 128.0 
 204.0 
 218.0 
 193.0 
 
 115.0 
 
 8,000 
 6,700 
 10,900 
 3,090 
 2,610 
 3,950 
 2,150 
 7,620 
 12,500 
 13,000 
 11,900 
 
 83,300 
 
 KAWAINUI RIVER AT PEPEEKEO, NEAR HILO, HAWAII. 
 
 Location. — At highway bridge on government road 7 miles north of Hilo. 
 Records available. — December 4, 1911, to March 30, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 5 p.m.; datum unchanged. 
 Discharge measurements. — Made by wading at low water, and from highway 
 
 bridge during high water. 
 Accuracy. — Records fair. 
 
 Discharge measurements of Kawainui River at Pepeekeo, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 4 
 
 Oct. 9 
 
 12 
 
 C.H.Pierce 
 
 E. O. Christiansen . 
 do 
 
 Feet. 
 
 -0.1 
 .70 
 .90 
 
 Sec.-ft. 
 0.49 
 9.5 
 13.2 
 
 Oct. 19 
 
 19 
 Dec. 24 
 
 E. O. Christiansen. 
 
 do... 
 
 do 
 
 Feet. 
 1.89 
 1.76 
 3.6 
 
 Sec.-ft. 
 64 
 53.2 
 40.2 
 
 One measurement made in January, 1913, used to define rating curve. 
 
216 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Kawainui River at Pepeeheo, near Kilo, Hawaii, for 1912. 
 
 [M. Matsuna, observer.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 1 
 
 2.1 
 
 1.75 
 
 1.7 
 
 1.6 
 
 1.55 
 
 1.5 
 
 1.45 
 
 1.45 
 
 1.4 
 
 1.4 
 
 1.35 
 
 1.3 
 
 1.2 
 
 1.1 
 
 1.1 
 
 0.35 
 .3 
 
 .08 
 .00 
 .00 
 
 .00 
 .00 
 .00 
 .00 
 .00 
 
 .00 
 .00 
 
 .7 
 .65 
 .1 
 
 2.0 
 
 2.2 
 
 1.95 
 
 2.0 
 
 1.8 
 
 1.65 
 
 1.8 
 
 1.7 
 
 1.7 
 
 1.6 
 
 3.35 
 3.95 
 3.0 
 3.05 
 2.35 
 
 16 
 
 1.0 
 
 1.0 
 
 .9 
 
 .85 
 .8 
 
 .7 
 
 .7 
 
 .6 
 
 .55 
 
 .5 
 
 .45 
 
 .5 
 
 .5 
 
 .4 
 
 .4 
 
 .4 
 
 0.00 
 
 .00 
 
 .00 
 
 .85 
 
 1.65 
 
 2.95 
 3.85 
 3.9 
 2.85 
 2.1 
 
 2.25 
 2.4 
 2.05 
 2.25 
 
 2.2 
 
 2 
 
 17 
 
 2.55 
 
 3 
 
 18 
 
 4.1 
 
 4 
 
 19 . 
 
 2.75 
 
 5 
 
 20.. 
 
 2.35 
 
 6 
 
 21 
 
 2.2 
 
 7 
 
 22.. 
 
 1.95 
 
 8 
 
 23... 
 
 2.2 
 
 9 
 
 24... 
 
 1.9 
 
 10 
 
 25... 
 
 1.85 
 
 11 
 
 26 
 
 1.75 
 
 12 
 
 27 
 
 1.7 
 
 13 
 
 28 
 
 1.6 
 
 14 
 
 29 
 
 1.5 
 
 15 
 
 30 
 
 1.45 
 
 
 31 
 
 
 
 
 
 
 Daily discharge, in second-feet, of Kawainui River at Pepeeheo, near Eilo, Hawaii, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Day. 
 
 Jan 
 
 Feb. 
 
 Mar. 
 
 1 
 
 82.0 
 55.0 
 51.0 
 44.0 
 41.0 
 
 38.0 
 36.0 
 36.0 
 33.0 
 33.0 
 
 30.0 
 28.0 
 24.0 
 20.0 
 20.0 
 
 4.0 
 3.4 
 1.5 
 1.0 
 1.0 
 
 1.0 
 1.0 
 1.0 
 1.0 
 1.0 
 
 1.0 
 1.0 
 9.0 
 8.0 
 1.6 
 
 73.0 
 96.0 
 69.0 
 73.0 
 58.0 
 
 48.0 
 58.0 
 51.0 
 51.0 
 44.0 
 
 347.0 
 480.0 
 270.0 
 281.0 
 127.0 
 
 16 
 
 16.0 
 16.0 
 13.0 
 12.0 
 11.0 
 
 9.0 
 9.0 
 7.5 
 7.0 
 6.0 
 
 5.5 
 6.0 
 6.0 
 4.6 
 4.6 
 4.6 
 
 1.0 
 
 1.0 
 
 1.0 
 
 12.0 
 
 48.0 
 
 259.0 
 457.0 
 468.0 
 237.0 
 82.0 
 
 106.0 
 138.0 
 77.0 
 106.0 
 
 96.0 
 
 2 
 
 17 
 
 171.0 
 
 3 
 
 18 
 
 514.0 
 
 4 
 
 19 
 
 215.0 
 
 5 
 
 20 
 
 127.0 
 
 6 
 
 21 
 
 96.0 
 
 7 
 
 22 
 
 69.0 
 
 8 
 
 23 
 
 96.0 
 
 9 
 
 24 
 
 65.0 
 
 10 
 
 25 
 
 62.0 
 
 11 
 
 26 
 
 55.0 
 
 12 
 
 27 
 
 51.0 
 
 13 
 
 28 
 
 44.0 
 
 14 
 
 29 
 
 38.0 
 
 15 
 
 30 
 
 35.0 
 
 
 31 
 
 
 
 
 
 
 Monthly discharge of Kawainui 
 
 River at Pepeekeo, near Hilo, Hawaii, for 
 
 1912. 
 
 Month. 
 
 Discharge in second-feet. 
 
 Run-ofl 
 (total in 
 acre-feet). 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 January 
 
 82.0 
 468.0 
 514.0 
 
 4.6 
 
 1.0 
 
 35.0 
 
 22.9 
 70.0 
 129.0 
 
 1,400 
 
 February 
 
 4,030 
 
 March 
 
 7,660 
 
 
 
 STATIONS NOS. 1, 2, 3, AND 4 AT PIIHONUA, NEAR HILO, HAWAII.* 
 
 Location. — About 1£ miles above Hilo, Hawaii, and about one-half mile north of 
 Kaumanu Road. 
 
 Records available. — February 2 to April 18 and July 30 to August 28, 1912. 
 
 Gage. — Gage heights were depth of water measured from a reference point. New 
 datum for station No. 4 on July 30; relation to former datum unknown. Regular 
 gages numbered to tenths installed July 30, 1912. Gage No. 1 discontinued, as 
 all water had been diverted for Hilo supply. Gage No. 2, zero of old gage: shank 
 of nail at gage height 0.45 foot on new gage. Gage No. 3, zero of old gage: shank 
 of nail at gage height 0.45 foot on new gage. Gage No. 4, old gage out; no rela- 
 tion determined between old and new gages. 
 
 1 Stations Nos. 1, 2, 3, and 4 on streams not named. 
 
ISLAND OF HAWAII. 
 
 217 
 
 Discharge measurements. — Made by wading. 
 
 Channels. — Fair; beds of streams composed of small cobbles and gravel; probably- 
 shifting. 
 Cooperation. — Maintained in cooperation with the county engineer of Hawaii. 
 
 Discharge measurements at station No. 1 at Piihonua, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 2 
 
 C. H. Pierce 
 
 Feet. 
 0.68 
 
 Sec.-ft. 
 0.93 
 
 July 30 
 
 
 .94 
 
 
 
 
 September 9: Water of spring piped away. 
 
 Daily gage height, in feet, at station No. 1 at Piihonua, near Hilo, Hawaii, for 1912. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 1 
 
 
 0.71 
 .71 
 .72 
 .70 
 .69 
 
 .58 
 .63 
 
 0.84 
 
 ""."83 
 
 ""'."83 
 
 .82 
 
 '".'si 
 
 .82 
 .80 
 
 11 
 
 0.77 
 
 .77 
 .78 
 .78 
 .78 
 
 .82 
 .69 
 .69 
 .71 
 .69 
 
 0.89 
 .90 
 
 .92 
 
 1.02 
 
 .96 
 
 .94 
 
 "".'98' 
 .96 
 
 .96 
 
 "6." 77 
 
 .76 
 
 .73 
 
 .74 
 .73 
 
 21 
 
 0.81 
 .76 
 
 0.95 
 
 .94 
 .94 
 .93 
 .92 
 
 .92 
 .92 
 .92 
 .92 
 .92 
 .87 
 
 
 2 
 
 0.68 
 .71 
 
 .72 
 .75 
 
 .77 
 .77 
 .77 
 .77 
 .77 
 
 12 
 
 22 
 
 
 3 
 
 13 
 
 23 
 
 
 4 
 
 14 
 
 24 
 
 .79 
 .75 
 
 .73 
 .73 
 
 .72 
 .72 
 
 
 5 
 
 15 
 
 25 
 
 
 6 
 
 16 
 
 26 
 
 
 7 
 
 17 
 
 27 
 
 
 8 
 
 18 
 
 28 
 
 
 9.. 
 
 19 
 
 29 
 
 
 10 
 
 20 
 
 30 
 
 
 
 
 31 
 
 
 
 
 
 
 
 Discharge measurements at station No. 2 at Piihonua, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 2 
 
 C. H. Pierce 
 
 Feet. 
 0.71 
 1.45 
 
 Sec.-ft. 
 0.47 
 
 Sept. 9 
 
 E. O . Christiansen 
 
 1.53 
 
 
 
 
 Daily gage height, in feet, at station No. 2 at Piihonua, near Hilo, Hawaii, for 1912. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 July. 
 
 Aug. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 July. 
 
 Aug. 
 
 1 
 
 
 1.00 
 .74 
 .72 
 .70 
 .76 
 
 .74 
 .72 
 .77 
 
 .87 
 .96 
 
 '"2." 66' 
 
 .94 
 
 
 
 0.78 
 
 .78 
 
 16 
 
 17 
 
 18 
 
 19 
 
 20 
 
 21 
 
 22 
 
 23 
 
 0.67 
 .76 
 .76 
 .80 
 
 1.00 
 
 1.67 
 1.57 
 
 0.97 
 
 "'i.'50' 
 
 .88 
 .81 
 
 .81 
 .75 
 .71 
 
 .72 
 .72 
 
 .68 
 .66 
 .69 
 .71 
 .70 
 1.45 
 
 0.91 
 1.15 
 .96 
 
 
 0.77 
 
 2 
 
 3 
 
 0.77 
 .77 
 .68 
 .69 
 
 .66 
 .67 
 .70 
 
 .72 
 .65 
 
 .71 
 
 .72 
 .72 
 .74 
 .70 
 
 0.70 
 .75 
 
 
 .55 
 
 4 
 
 
 
 
 
 5 
 
 .89 
 .75 
 
 
 .45 
 
 .43 
 .42 
 .42 
 .42 
 .42 
 
 
 
 .55 
 
 6 
 
 
 
 .49 
 
 7 
 
 
 
 .65 
 
 8 
 
 1.07 
 1.30 
 1.15 
 
 
 
 
 
 9 
 
 24 
 
 25 
 
 26 
 
 27 
 
 28 
 
 29 
 
 30 
 
 1.27 
 .92 
 
 .81 
 .77 
 .75 
 1.16 
 
 
 
 
 10 
 
 
 
 
 11 
 
 
 
 .51 
 
 12 
 
 
 
 .42 
 
 
 
 
 13 
 
 1.00 
 .90 
 
 
 
 
 .55 
 
 14 
 
 
 .58 
 
 
 
 
 15 
 
 
 6.48 
 
 .48 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
218 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements at station No. 3 at Piihonua, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feb. 2 
 
 C. H. Pierce 
 
 Feet. 
 0.88 
 1.58 
 
 Sec.-ft. 
 1.10 
 
 Sept. 9 
 
 E. 0. Christiansen 
 
 1.67 
 
 
 
 Daily gage height, in feet, at station No. 3 at Piihonua, near Hilo, Hawaii, for 1912. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 July. 
 
 Aug. . 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 July. 
 
 Aug. 
 
 1 
 
 
 1.03 
 .92 
 .94 
 .93 
 .90 
 
 .87 
 .81 
 .88 
 
 
 
 0.92 
 .92 
 
 16 
 
 17 
 
 18 
 
 19 
 
 20 
 
 21 
 
 22 
 
 23 
 
 0.86 
 .85 
 .86 
 .87 
 .93 
 
 1.18 
 2.02 
 
 1.11 
 
 '"'i.~38" 
 1.08 
 1.02 
 
 1.01 
 .98 
 .96 
 .95 
 .95 
 
 .93 
 .93 
 .93 
 .94 
 .94 
 1.40 
 
 1.06 
 1.27 
 1.12 
 
 
 0.92 
 
 2 
 
 3 
 
 0.88 
 .89 
 
 .88 
 .87 
 
 .87 
 .87 
 .87 
 .87 
 .85 
 
 .89 
 .89 
 .90 
 .90 
 .90 
 
 0.94 
 .95 
 
 
 .77 
 
 4 
 
 
 
 
 
 5 
 
 1.05 
 .95 
 
 
 .65 
 
 .65 
 .65 
 .65 
 .65 
 .65 
 
 
 
 .78 
 
 6 
 
 
 
 .82 
 
 7 
 
 
 
 .85 
 
 8 
 
 1.07 
 
 
 
 
 
 9....... 
 
 24 
 
 25 
 
 26 
 
 27 
 
 28 
 
 29 
 
 30... 
 
 1.35 
 1.09 
 
 1.02 
 
 1.00 
 
 .98 
 
 1.11 
 
 
 
 
 10 
 
 .96 
 .98 
 1.19 
 1.79 
 1.12 
 
 1.33 
 
 
 
 
 
 11 
 
 
 
 .85 
 
 12 
 
 
 
 .65 
 .65 
 .92 
 
 
 
 
 13 
 
 1.12 
 1.03 
 
 
 
 
 .86 
 
 14 
 
 
 
 
 15 
 
 
 0.74 
 .70 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 Discharge measurements at station No. 4 at Piihonua, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Velocity. 
 
 Feb. 2 
 
 C. H. Pierce 
 
 No flow. 
 
 Sept. 9 
 
 
 Do. 
 
 
 
 
 Daily gage height, in feet, at station No. 4 at Piihonua, near Hilo, Hawaii, for 1912. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 July. 
 
 Aug. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 July. 
 
 Aug. 
 
 1.. 
 
 
 1.50 
 1.58 
 1.59 
 1.60 
 1.51 
 
 1.42 
 1.40 
 1.34 
 
 1.49 
 1.54 
 1.62 
 2.23 
 1.79 
 
 
 
 1.05 
 1.15 
 
 16....... 
 
 17 
 
 18 
 
 19 
 
 20,. 
 
 21 
 
 22 
 
 23 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 1.11 
 
 1.89 
 
 1.71 
 
 " "1.83" 
 
 1.75 
 1.64 
 
 1.62 
 1.61 
 1.60 
 1.58 
 1.57 
 
 1.56 
 1.54 
 1.57 
 1.58 
 1.56 
 1.97 
 
 1.64 
 1.71 
 1.70 
 
 
 1.30 
 
 2 
 
 3 
 
 0.37 
 .23 
 
 .28 
 .10 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 1.54 
 1.49 
 
 
 1.32 
 
 4 
 
 
 
 
 
 5 . 
 
 1,52 
 1.49 
 
 
 1.02 
 
 1.01 
 1.00 
 .91 
 .81 
 .70 
 
 
 
 1.53 
 
 6 
 
 
 
 1.58 
 
 7 
 
 
 
 1.6*7 
 
 8 
 
 1.63 
 1.74 
 1.75 
 
 
 
 
 
 9 
 
 24 
 
 25 
 
 26 
 
 27 
 
 28 
 
 29 
 
 30 
 
 1.79 
 
 1.82 
 
 1.76 
 1.72 
 1.72 
 1.49 
 
 
 
 
 10 
 
 
 
 
 11 
 
 
 
 1.10 
 
 12 
 
 
 
 .47 
 
 
 
 
 13 
 
 1.70 
 1.69 
 
 
 
 
 1.00 
 
 14 
 
 
 1.50 
 
 
 
 
 15 
 
 
 1.08 
 1.03 
 
 1.08 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 a Channel dry. 
 
ISLAND OF HAWAII. 219 
 
 STATIONS AT 2,700-FOOT LEVEL i IN THE FOREST BACK OF HILO, HAWAII. 
 
 The perennial streams of the island of Hawaii are in general 
 restricted to two zones, one comprising an area about 10 miles wide 
 in the Kohala and Hamakua districts, and the other, including an 
 area about 12 miles wide, situated in the Hilo district between the 
 South Branch of Wailuku River on the southeast and Maulua Gulch 
 on the northwest. 
 
 The run-off from the Kohala-Hamakua district at ordinary stages 
 is now diverted into ditches serving the sugar lands of the north coast 
 of the island. It is proposed to divert the run-off of the Hilo district 
 at an elevation above the 2,500-foot contour and deliver it by a 
 high-line ditch to serve the semi-arid lands of Kau on the south side 
 of the island. Limited funds have restricted operations so far to 
 the area bounded by the South Branch of Wailuku River and the 
 North Branch of Kawainui River. All the streams of this region 
 originate on the east slope of Mauna Kea. Above the wet belt, 
 comprising about 75 square miles, the surface is composed of porous 
 lava rock that absorbs practically all the rainfall. 
 
 Ten rain gages, which are read at monthly and bimonthly inter- 
 vals, are maintained at approximately 500-foot intervals of elevation 
 from sea level to an elevation of 5,000 feet in. this district. 
 
 STATION RECORDS. 
 
 Location.— On the line of a trail cut out approximately on the 2,700-foot contour, 
 in the forest above Hilo, Hawaii, during September and October, 1911. The trail 
 is about 12 miles in length, trends in a general northerly and southerly direction, 
 and crosses 83 streams having appreciable channels, from the South Branch of the 
 Wailuku to the North Branch of Kawainui River. A gaging station is maintained 
 on each of these streams, whether perennial or not, at the trail crossing. Begin- 
 ning at the South Branch of the Wailuku with No. 1 the stations are numbered 
 consecutively northward to No. 87, except for a break of 6 numbers between sta- 
 tions No. 18 and No. 25. A camp maintained near the middle of the zone under 
 observation is reached by a foot trail, 3^ miles long, from the end of the Kaiwiki 
 Homestead road. 
 
 Records available. — Stations 1-12, October 1, 1911, to December 31, 1912. 
 Station 12a, November 30 to December 31, 1912. 
 Stations 13-18, 25-26, October 1, 1911, to December 31, 1912. 
 Stations 27-41, September 28, 1911, to December 31, 1912. 
 Stations 42-47, September 26, 1911, to December 31, 1912. 
 Stations 48-50, September 31, 1911, to December 31, 1912. 
 Stations 51-52, October 7, 1911, to December 31, 1912. 
 Stations 53-65, October 10, 1911, to December 31, 1912. 
 Stations 66-68, October 21, 1911, to December 31, 1912. 
 Stations 69-74, November 13, 1911, to December 31, 1912. 
 Stations 75-86, November 14, 1911, to December 31, 1912. 
 Station 86a, November 18, 1912, to December 31, 1912. 
 Station 87, November 14, 1911, to December 31, 1912. 
 
 1 Aneroid readings gave elevation of 2,500 feet. More accurate determinations made later by topogra- 
 phers of U. S. Geol. Survey gave elevations 200 to 280 feet higher. The correct elevation of the survey 
 camp at station No. 80 is 2,750 feet. 
 
220 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Gages. — Vertical staffs. Two observers have been continuously employed to read 
 these 83 gages twice a day, except at such times when it was impossible to cross 
 the streams at high water. The men alternated trips, north and south from the 
 camp, and different observers were employed at different times. 
 
 Discharge measurements. — Made by wading. 
 
 Accuracy. — The total run-off for 1912 for all the stations was found to be 179,000 
 acre-feet, and that part which was determined from the good stations amounted 
 to 173,000 acre-feet, leaving only 3 per cent of the total that might be very much 
 in error. Although the estimated discharge forms quite a large percentage of the 
 total discharge for the 83 stations, the mean monthly discharge for all the streams 
 is probably correct within less than 25 per cent. See also notes to daily discharge 
 tables. 
 
 Discharge measurements at station No. 1 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13 
 Sept. 27 
 Nov. 21 
 
 
 Feet. 
 
 -0.62 
 
 -1.17 
 
 .82 
 
 1.47 
 
 Sec.-ft. 
 0.26 
 
 do , 
 
 .06 
 
 do 
 
 32.5 
 
 Dec. 27 
 
 do 
 
 65.7 
 
 
 
 
 Note. — Channel in bedrock; smooth. Stream flows in one channel at all stages and is permanent. 
 This station is on the South Branch or principal tributary of Wailuku River. 
 
 Daily gage height, in feet, at station No. 1 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1912. 
 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofi, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 -1.05 
 
 
 -0.40 
 
 - .60 
 
 1.75 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.18 
 .12 
 
 .08 
 
 .05 
 .05 
 .08 
 .05 
 .02 
 
 - .15 
 
 - .25 
 
 - .38 
 
 - .55 
 
 - .70 
 
 - .85 
 
 
 0.10 
 
 - .06 
 
 - .18 
 
 0.48 
 .65 
 .69 
 
 .71 
 
 
 
 0.29 
 
 .08 
 
 - .05 
 
 - .22 
 
 -".'35' 
 
 - .49 
 
 - .05 
 
 
 
 
 1.59 
 
 4 
 
 1.38 
 .91 
 
 -6." 45" 
 -".'42" 
 
 + .21 
 
 - .70 
 
 -".'45" 
 
 - .41 
 
 - .35 
 
 - .28 
 
 "i.'oo" 
 
 .94 
 .90 
 .62 
 .45 
 
 .22 
 .40 
 .20 
 .15 
 - .05 
 
 .10 
 
 - .98 
 -1.00 
 
 -1.05 
 
 -i.'i2* 
 
 -"."45' 
 
 - .76 
 
 - .18 
 + .04 
 
 - .16 
 
 -i.'46" 
 
 ""."62" 
 .49 
 
 1.08 
 
 "i.'so' 
 
 1.50 
 1.08 
 
 1.05 
 
 5 
 
 .61 
 
 6 
 
 .52 
 
 7 
 
 
 - .30 
 
 .55 
 
 8 
 
 
 
 1.00 
 
 9 
 
 
 .10 
 .15 
 
 .21 
 
 .75 
 
 1.00 
 
 1.12 
 
 .99 
 
 .72 
 .96 
 
 
 
 
 .70 
 
 10... 
 
 1.28 
 
 1.24 
 1.00 
 
 '".'59' 
 
 .35 
 
 .44 
 .40 
 
 .72 
 .64 
 .52 
 
 
 
 .40 
 
 11 
 
 
 
 .19 
 
 12 
 
 
 
 
 - .94 
 
 - .61 
 
 .10 
 
 13 
 
 .40 
 
 .40 
 
 .14 
 
 - .10 
 
 14 
 
 .08 
 
 15 
 
 
 .40 
 
 .01 
 
 - .45 
 
 - .62 
 
 .18 
 
 16 
 
 
 1.38 
 
 .22 
 
 17 
 
 - .20 
 
 .30 
 
 
 .02 
 
 18 
 
 
 
 
 - .48 
 
 - .10 
 
 - .17 
 
 - .28 
 
 - .22 
 
 - .25 
 
 - .45 
 
 - .65 
 
 - .90 
 -1.17 
 -.1. 25 
 -1.25 
 
 - .25 
 
 .48 
 
 .88 
 
 "i.74" 
 1.04 
 
 .64 
 
 1.25 
 
 "i.*22" 
 
 .82 
 .65 
 .71 
 
 - .08 
 
 19... 
 
 -1.20 
 
 
 
 - .05 
 
 
 
 .21 
 
 20 
 
 0.24 
 
 .85 
 
 .82 
 .52 
 .49 
 
 
 
 
 
 21 
 
 
 
 .20 
 
 - .39 
 
 -i.'is' 
 
 -1.18 
 -1.00 
 -1.02 
 
 -1.05 
 
 - .35 
 
 .48 
 
 22 
 
 
 
 
 23 
 
 
 
 - .11 
 
 
 - .60 
 + .10 
 
 - .24 
 
 - .41 
 
 - .59 
 
 - .60 
 
 
 24 
 
 
 
 
 25 
 
 
 
 .29 
 
 .12 
 - .01 
 — . .14 
 
 .68 
 
 .80 
 .72 
 .71 
 
 - .30 
 
 - .21 
 
 - .45 
 + .11 
 
 - .10 
 
 .44 
 
 .35 
 .20 
 
 1.25 
 
 26 
 
 
 
 
 27 
 
 
 
 1.48 
 
 28 
 
 
 
 1.02 
 
 29 
 
 
 
 - .20 
 .11 
 
 
 
 .78 
 
 30 
 
 
 
 
 
 
 "i.'ie" 
 
 .48 
 
 
 31 
 
 
 
 
 - .40 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ISLAND OF HAW An. 
 
 221 
 
 Daily discharge, in second-feet, at station No. 1 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 NoV. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 112. 00 
 
 94.80 
 79. 60 
 65.20 
 52.00 
 
 41.00 
 36.60 
 32.20 
 27.80 
 23.50 
 
 19.60 
 18.40 
 17.20 
 16.00 
 14.80 
 
 0.40 
 .40 
 
 2.50 
 11.00 
 13.00 
 
 13.90 
 14.80 
 15.70 
 16.60 
 13.00 
 
 17.50 
 
 22.00 
 27.00 
 29.00 
 39.00 
 
 7.20 
 5.92 
 7.20 
 6.40 
 5.92 
 
 4.10 
 2.66 
 12.00 
 16.60 
 13.60 
 
 12.60 
 11.40 
 46.00 
 86.40 
 208. 00 
 
 16 
 
 13.60 
 12.60 
 8.10 
 6.72 
 
 5.47 
 
 4.43 
 3.60 
 2.90 
 2.29 
 1.74 
 
 1.20 
 1.00 
 
 .80 
 .64 
 .52 
 .40 
 
 36.20 
 52.50 
 67.00 
 85.00 
 85.00 
 
 85.00 
 85.00 
 85.00 
 85.00 
 79.00 
 
 54.00 
 39.00 
 33.80 
 27.00 
 20.50 
 
 122. 00 
 
 2 
 
 17 
 
 124. 00 
 
 3 
 
 18... 
 
 154. 00 
 
 4 
 
 19 
 
 184. 00 
 
 5 
 
 20 
 
 140. 00 
 
 6 
 
 21 
 
 107 00 
 
 7 
 
 22 
 
 67.00 
 
 8 
 
 23 
 
 45.00 
 
 9 
 
 24 . 
 
 27.00 
 
 10 
 
 25... 
 
 56.20 
 
 11 
 
 26 
 
 37.80 
 
 12 .. 
 
 27 
 
 25.00 
 
 13 
 
 28 
 
 24.40 
 
 14 
 
 29 
 
 31.00 
 
 15 
 
 30 
 
 22.00 
 
 
 31 
 
 25.00 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 1 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1.. 
 2.. 
 3.. 
 
 4.. 
 5.. 
 
 6.. 
 7.. 
 8.. 
 9.. 
 10.. 
 
 11.. 
 12.. 
 13.. 
 14.. 
 15.. 
 
 16.. 
 17.. 
 18.. 
 19.. 
 20.. 
 
 21.. 
 22.. 
 23.. 
 24.. 
 25.. 
 
 26.. 
 27.. 
 28.. 
 29.. 
 30.. 
 31.. 
 
 13.0 
 13.0 
 13.0 
 11.0 
 11.0 
 
 10.0 
 10.0 
 11.0 
 10.0 
 9.0 
 
 5.0 
 3.5 
 2.2 
 1.2 
 
 (a) 
 
 (?) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 (o) 
 
 (a) 
 (a) 
 (a) 
 
 [3 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 fa) 
 (a) 
 (a) 
 14 
 
 60 
 100 
 130 
 80 
 60 
 
 50 
 40 
 30 
 20 
 
 15.0 
 13.0 
 11.0 
 7.9 
 5.9 
 
 5.1 
 4.3 
 8.0 
 11.0 
 12.0 
 
 13.0 
 31.0 
 41.0 
 46.0 
 41.0 
 
 28.0 
 39.0 
 37.0 
 37.0 
 35.0 
 
 34.0 
 23.0 
 22.0 
 19.0 
 16.0 
 
 11.0 
 8.8 
 6.6 
 5.6 
 11.0 
 60.0 
 
 40.0 
 50.0 
 40.0 
 60.0 
 80.0 
 
 37.0 
 34.0 
 31.0 
 28.0 
 25.0 
 
 23.0 
 21.0 
 19.0 
 16.0 
 12.0 
 
 9.0 
 5.6 
 6.8 
 8.1 
 8.0 
 
 8.0 
 7.0 
 7.0 
 5.6 
 
 4.3 
 
 4.2 
 4.2 
 4.0 
 3.8 
 3.6 
 3.3 
 
 3.0 
 3.0 
 3.0 
 3.0 
 3.0 
 
 3.0 
 3.1 
 3.1 
 3.2 
 3.2 
 
 3.2 
 3.3 
 3.3 
 3.3 
 3.3 
 
 3.8 
 4.3 
 4.6 
 4.9 
 5.2 
 
 5.6 
 5.6 
 5.6 
 5.6 
 5.5 
 
 3.0 
 11.0 
 
 7.2 
 7.0 
 6.0 
 
 6.0 
 8.0 
 16.0 
 11.0 
 8.1 
 
 5.3 
 4.6 
 3.8 
 2.6 
 8.1 
 
 40.0 
 20.0 
 12.0 
 10.0 
 9.0 
 
 8.0 
 7.0 
 6.0 
 5.0 
 4.0 
 
 3.4 
 2.6 
 1.8 
 11.0 
 8.0 
 
 5.1 
 3.2 
 1.9 
 1.8 
 1.0 
 1.0 
 
 0.2 
 
 30.0 
 
 20.0 
 
 13.0 
 
 1.2 
 
 2.0 
 2.9 
 3.2 
 3.8 
 4.6 
 
 2.4 
 .3 
 1.7 
 2.3 
 2.9 
 
 1.7 
 2.2 
 2.7 
 3.0 
 1.0 
 
 .5 
 .1 
 .1 
 .2 
 .2 
 
 .2 
 3.8 
 3.0 
 2.0 
 1.0 
 3.0 
 
 25.0 
 30.0 
 60.0 
 80.0 
 41.0 
 
 39.0 
 37.0 
 26.0 
 21.0 
 18.0 
 
 14.0 
 19.0 
 13.0 
 12.0 
 10.0 
 
 11. 
 
 5.3 
 5.0 
 2.9 
 
 3.3 
 1.8 
 1.0 
 .2 
 .2 
 
 .2 
 .2 
 .1 
 .2 
 2.9 
 
 5.9 
 10.0 
 
 6.2 
 12.0 
 
 10.0 
 40.0 
 21.0 
 36.0 
 35.0 
 
 40.0 
 70.0 
 120.0 
 81.0 
 43.0 
 
 27.0 
 135.0 
 90.0 
 80.0 
 60.0 
 48.0 
 
 82 
 90 
 110 
 70 
 61 
 
 20 
 26 
 22 
 44 
 110 
 
 100 
 
 85 
 67 
 44 
 30 
 
 60 
 80 
 52 
 60 
 51 
 
 34 
 
 27 
 29 
 24 
 20 
 
 18 
 13 
 40 
 30 
 21 
 
 sa o 
 
 90.0 
 72.0 
 43.0 
 25.0 
 
 23.0 
 24.0 
 41.0 
 29.0 
 19.0 
 
 13.0 
 11.0 
 7.2 
 11.0 
 13.0 
 
 14.0 
 
 9.0 
 
 7.6 
 
 13.0 
 
 40.0 
 
 21.0 
 60.0 
 90.0 
 80.0 
 52.0 
 
 70.0 
 66.0 
 42.0 
 32.0 
 20.0 
 15.0 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station 50. 
 
222 
 
 WATER RESOURCES OF HAW An, 1912. 
 
 Monthly discharge at station No. 1 at 2,700-foot level, near Silo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March. 
 
 April 
 
 May 
 
 Mean dis- 
 charge in 
 second- 
 feet. 
 
 23.10 
 38.50 
 52.80 
 
 4.21 
 20.10 
 21.20 
 34.90 
 19.50 
 
 Run-off 
 (total in 
 acre- 
 feet). 
 
 1,420 
 2,300 
 3,260 
 
 259 
 1,170 
 1,300 
 2,080 
 1,200 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean dis- 
 charge in 
 second- 
 feet. 
 
 4.40 
 7.59 
 3.72 
 16.80 
 31.70 
 50.70 
 36.50 
 
 20.90 
 
 Run-off 
 (total in 
 acre- 
 feet). 
 
 264 
 467 
 229 
 1,000 
 1,950 
 3,120 
 2,240 
 
 15,300 
 
 Discharge measurements at station No. 2 at 2,700-foot level, near Silo, Hawaii, in 1912. 
 
 Date. 
 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13 
 Sept. 27 
 Nov. 21 
 
 E . O . Christiansen 
 
 Feet. 
 
 0.47 
 
 .48 
 
 .55 
 
 .61 
 
 Sec-ft. 
 0.02 
 
 ...do . 
 
 
 do 
 
 .03 
 
 Dec. 27 
 
 ....do... 
 
 .10 
 
 
 
 
 Note. — Channel of sand, mud, and gravel; shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 2 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dee. 
 
 1 
 
 
 
 
 
 
 
 
 0.45 
 
 
 0.60 
 
 .58 
 
 0.60 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.44 
 
 .42 
 .41 
 
 .42 
 .42 
 .45 
 .41 
 .41 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 ""(«)"" 
 
 0.39 
 .36 
 .35 
 
 0.44 
 .51 
 
 .54 
 
 .59 
 
 
 
 0.61 
 
 .56 
 .50 
 
 .49 
 
 
 
 
 0.60 
 
 4 
 
 0.76 
 
 
 .51 
 .45 
 
 ""."48" 
 
 .45 
 .55 
 .55 
 
 "".W 
 
 .59 
 .61 
 .52 
 .52 
 
 .51 
 
 .58 
 .55 
 .55 
 .52 
 
 .55 
 
 .51 
 .50 
 
 .50_ 
 
 "".ho 
 
 "".52 
 
 .51 
 .55 
 .50 
 .51 
 
 "".'56' 
 
 ""."56" 
 .50 
 .55 
 
 ""."60* 
 .60 
 .51 
 
 .61 
 
 5 
 
 .52 
 
 6 
 
 .70 
 
 
 .51 
 
 7 
 
 "1" 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 0.63 
 
 .35 
 
 .52 
 
 8 
 
 
 
 
 .46 
 .45 
 .50 
 
 .60 
 
 9 
 
 .40 
 .40 
 
 .41 
 .51 
 .69 
 1.00 
 
 .70 
 .76 
 
 ""ei" 
 
 .61 
 .52 
 .49 
 
 
 
 
 .56 
 
 10 
 
 .60 
 
 .54 
 .54 
 
 ""."50" 
 
 .52 
 
 .64 
 
 """."56" 
 
 .54 
 .55 
 
 .60 
 .55 
 .55 
 
 
 
 .51 
 
 11 
 
 
 
 .51 
 
 12 
 
 
 
 
 .46 
 
 .48 
 
 .48 
 
 13 
 
 .51 
 
 .30 
 
 .51 
 
 .46 
 
 14 
 
 .48 
 
 15 
 
 
 .28 
 
 .48 
 
 .50 
 
 .48 
 
 .52 
 
 16 
 
 
 .59 
 
 .55 
 
 17 
 
 .40 
 
 .30 
 
 
 .51 
 
 18 
 
 
 
 .49 
 
 .54 
 .51 
 .50 
 
 .50 
 .50 
 .49 
 .49 
 
 .49 
 .49 
 .49 
 .48 
 .60 
 
 .55 
 .55 
 
 ""."64" 
 .54 
 
 .50 
 
 .60 
 
 "".ho 
 
 .55 
 .52 
 .55 
 
 .50 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 la) 
 (a) 
 (a) 
 
 .38 
 
 
 
 .52 
 
 20 
 
 
 
 
 
 21 
 
 
 .20 
 
 .55 
 
 ""'."38" 
 .40 
 .50 
 .50 
 
 .49 
 .50 
 
 .60 
 
 22. 
 
 
 23. . 
 
 .32 
 
 
 .50 
 
 .71 
 
 .72 
 .55 
 .45 
 .45 
 
 
 24 
 
 
 25 
 
 
 .45 
 
 .44 
 .42 
 .42 
 .41 
 .60 
 
 .56 
 
 .61 
 .58 
 .55 
 
 .28 
 "".2\ 
 
 .51 
 
 .48 
 .48 
 .45 
 
 .55 
 
 .52 
 .51 
 
 .61 
 
 26 
 
 
 
 
 27 
 
 fa) 
 
 (a) 
 (a) 
 (a) 
 
 
 .62 
 
 28 
 
 .55 
 
 29 
 
 
 
 .55 
 
 30 
 
 
 
 
 ""."55" 
 
 .60 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
 near station No. 50. 
 
ISLAND OF HAWAII. 
 
 223 
 
 Daily discharge, in second-feet, at station No. 2 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .02 
 
 
 
 11 
 
 0.02 
 .02 
 .02 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 ""o.'io 
 
 .10 
 .15 
 
 .10 
 .10 
 .15 
 .15 
 .10 
 
 21.... 
 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 0.05 
 
 2 
 
 
 
 12 
 
 22.. 
 
 
 
 3 
 
 
 
 13 
 
 23 
 
 
 
 4 
 
 
 
 14 
 
 24 
 
 
 
 5 
 
 0.05 
 
 .05 
 .05 
 .05 
 .10 
 .10 
 
 
 15 
 
 25 
 
 
 .10 
 
 
 16 
 
 26 
 
 
 .05 
 
 
 27 
 
 
 
 
 
 17 
 
 .05 
 
 
 28 
 
 
 
 
 
 18 
 
 .05 
 
 
 29 
 
 
 
 
 
 19 
 
 
 
 30 
 
 
 
 
 
 20 
 
 .05 
 
 
 31 
 
 
 
 
 
 
 
 .05 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 2 a{ 2,100-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 1 
 
 
 
 
 0.10 
 
 0.10 
 
 
 2 
 
 
 
 
 I 
 
 
 
 
 
 3 
 
 
 
 
 l 
 
 0.60 
 
 
 
 
 
 0.10 
 
 4 
 
 (a) 
 (a) 
 
 
 
 0.30 
 
 
 
 
 
 
 .10 
 
 5 
 
 
 
 (a) 
 
 
 
 0.10 
 
 
 
 
 6 
 
 
 
 .20 
 
 
 
 
 
 
 7 
 
 
 
 
 (a) 
 
 
 
 .10 
 
 
 
 
 8 
 
 
 
 
 
 
 
 
 .10 
 
 9 
 
 
 
 
 l 
 
 l 
 
 
 
 
 
 10 
 
 
 
 0.10 
 
 i 
 
 ; ; ■"■;: 
 
 
 
 
 
 11 
 
 
 
 
 
 
 
 
 
 
 
 12 
 
 
 
 
 
 
 
 
 
 
 .10 
 . - 10 
 
 
 13 
 
 
 0.20 
 .50 
 .40 
 
 .20 
 
 .30 
 
 
 
 
 
 
 
 
 
 14 
 
 
 
 
 
 
 
 
 
 
 15 
 
 
 
 
 
 
 
 
 
 
 16 
 
 
 
 
 
 
 
 
 
 
 
 17 
 
 
 
 
 
 
 
 
 
 
 
 18 
 
 
 
 
 
 
 
 
 
 .10 
 
 
 f9 
 
 
 
 
 
 
 
 
 
 
 
 20 
 
 0.10 
 
 
 
 
 
 
 
 
 
 .10 
 
 
 21 
 
 
 .10 
 
 
 
 
 
 
 
 .10 
 
 22 
 
 
 
 
 
 
 
 
 1 
 
 
 23 
 
 
 
 
 
 
 
 
 
 i 
 
 24 
 
 
 
 
 
 
 .20 
 
 
 
 .10 
 
 i 
 
 25 
 
 
 
 
 
 
 
 
 
 .10 
 
 26 
 
 
 
 .10 
 
 
 
 .20 
 
 
 
 
 
 27 
 
 
 
 
 
 
 
 
 
 .10 
 
 28 '.. 
 
 
 
 
 
 
 
 
 
 
 
 29 
 
 
 
 
 
 
 
 
 
 
 
 30 
 
 
 .10 
 
 
 
 
 
 
 .10 
 
 
 .10 1 
 
 31 
 
 
 
 (») 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 1 
 
 a Channel dry. 
 Monthly discharge at station No. 2 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 October... 
 November. 
 December. 
 
 1911. 
 
 January . . 
 February. 
 
 March 
 
 April 
 
 May 
 
 1912. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 -0.03 
 
 - .08 
 
 .10 
 
 .02 
 .20 
 .25 
 .10 
 .05 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.84 
 4.76- 
 6.15 
 
 1.23 
 
 11.50 
 
 15.40 
 
 5.95 
 
 3.07 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July. 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.01 
 .10 
 .10 
 .20 
 .30 
 .20 
 .10 
 
 .14 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.60 
 6.15 
 6.15 
 11.90 
 18.40 
 11.90 
 6.15 
 
 98.40 
 
224 
 
 WATER RESOURCES OF HAWAII, 1912, 
 
 Discharge measurements at station No. 3 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Aug. 13. 
 Sept. 27. 
 
 Gage 
 height. 
 
 Feet. 
 -0.04 
 - .12 
 
 Discharge. 
 
 Sec.-ft. 
 1.05 
 .72 
 
 Date. 
 
 Nov. 21. 
 Dec. 27. 
 
 Gage 
 height. 
 
 Feet. 
 0.72 
 1.11 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 13.0 
 26.4 
 
 Bed of stream, composed of gravel and cobbles, is fairly smooth and probably permanent. One channel 
 at all stages. This stream is tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 19 12. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 .08 
 .08 
 
 (a) 
 
 (a) 
 (a) 
 
 (<*) 
 -.75 
 .25 
 
 
 
 
 
 
 -0.02 
 
 
 0.25 
 .11 
 
 1.11 
 
 
 2. 
 
 
 
 
 
 
 
 
 3 
 
 0.12 
 .08 
 .05 
 
 .06 
 .08 
 .12 
 .10 
 .05 
 
 -.02 
 -.08 
 -.10 
 -.15 
 
 -.18 
 
 -.20 
 
 0.17 
 .09 
 .02 
 
 ""."62" 
 
 0.41 
 .62 
 .71 
 
 .73 
 
 
 
 0.49 
 .22 
 .02 
 
 - .10 
 
 -'."25' 
 
 - .35 
 .20 
 
 
 
 
 1.05 
 
 4 
 
 1.03 
 .70 
 
 +6.' 30* 
 + "."34" 
 
 .33 
 
 .08 
 
 ""."64" 
 .02 
 .05 
 .00 
 
 '"i."20' 
 
 .90 
 .96 
 
 .78 
 .54 
 
 .32 
 .42 
 .26 
 
 - .10 
 
 - .12 
 
 - .14 
 
 -"."22" 
 
 ""."65" 
 
 .01 
 .28 
 .14 
 .05 
 
 """."98" 
 
 """.*64* 
 .54 
 .92 
 
 """.*85" 
 .70 
 .64 
 
 1.02 
 
 5 
 
 .70 
 
 6 
 
 .61 
 
 7 
 
 .64 
 
 8.... 
 
 
 
 .92 
 
 9 
 
 .16 
 
 .15 
 
 .22 
 .80 
 .98 
 1.02 
 .89 
 
 .72 
 .99 
 
 '■"."99" 
 
 .97 
 .78 
 .68 
 
 
 
 
 .62 
 
 10 
 
 1.19 
 
 1.13 
 .96 
 
 ""."75" 
 
 .68 
 
 .46 
 
 ""."64' 
 .66 
 .49 
 
 .78 
 .71 
 .63 
 
 
 
 .50 
 
 11. 
 
 
 
 .39 
 
 12. 
 
 
 
 
 - .09 
 
 - .04 
 
 .28 
 
 13 
 
 .30 
 
 .28 
 
 .14 
 
 .14 
 
 14... 
 
 .14 
 
 15 
 
 
 .20 
 
 - .01 
 
 .05 
 .01 
 
 
 .38 
 
 16 
 
 
 
 .99 
 
 ""i.'oi" 
 
 .51 
 
 17... 
 
 .10 
 
 .20 
 
 
 
 • .52 
 
 .25 
 
 18 
 
 
 
 .04 
 
 .10 
 
 .08 
 .02 
 
 .05 
 
 .02 
 
 .00 
 
 -.02 
 
 -.10 
 -.12 
 -.15 
 -.18 
 .35 
 
 .98 
 
 .18 
 
 19 
 
 -.25 
 -.26 
 
 -.28 
 -.34 
 -.38 
 -.40 
 
 .20 
 
 
 
 .38 
 
 20 
 
 
 
 
 "'l.*29* 
 
 .86 
 
 .70 
 
 .98 
 
 .73 
 .66 
 .71 
 
 
 21 
 
 
 .10 
 
 - .15 
 
 -\"io" 
 
 - .10 
 
 - .11 
 
 - .12 
 
 - .14 
 .08 
 
 52 
 
 22 
 
 
 23 
 
 .05 
 
 
 - .35 
 .12 
 
 - .25 
 
 - .28 
 
 - .35 
 
 - .40 
 
 
 24.. . 
 
 
 25 
 
 
 .41 
 
 .21 
 .10 
 .02 
 +.09 
 .12 
 
 .77 
 
 .85 
 .80 
 .79 
 
 .00 
 
 *+.'6i" 
 
 .10 
 
 + .31 
 
 .01 
 
 + .02 
 
 .54 
 
 .40 
 .30 
 
 i.oi 
 
 26 
 
 
 
 
 27 
 
 -.40 
 -.42 
 -.45 
 -.50 
 
 
 1.11 
 
 28 
 
 .81 
 
 29 
 
 
 
 .64 
 
 30 
 
 
 
 
 "*.*8i" 
 
 .52 
 
 
 31 
 
 
 +.15 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 Daily discharge, in feet, at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 . 
 
 40.0 
 34.0 
 30.0 
 26.0 
 22.0 
 
 19.0 
 16.0 
 14.5 
 13.0 
 11.5 
 
 0.5 
 .5 
 2.5 
 6.4 
 13.0 
 
 13.3 
 13.6 
 14.2 
 14.5 
 12.7 
 
 4.1 
 2.5 
 1.2 
 1.2 
 1.1 
 
 .9 
 1.2 
 2.6 
 5.2 
 
 2.7 
 
 11 
 
 10.0 
 8.2 
 6.4 
 4.9 
 3.6 
 
 2.7 
 2.5 
 2.3 
 2.0 
 1.7 
 
 13.0 
 14.5 
 16.0 
 19.0 
 22.8 
 
 22.0 
 22.0 
 24.0 
 26.0 
 28.0 
 
 3.0 
 
 2.6 
 
 16.6 
 
 34.8 
 
 70.0 
 
 46.0 
 
 58.0 
 70.0 
 82.0 
 62.0 
 
 21 
 
 1.5 
 1.4 
 1.2 
 1.1 
 1.0 
 
 .8 
 .7 
 .6 
 .5 
 .4 
 .5 
 
 30.0 
 30.8 
 31.6 
 31.6 
 31.6 
 
 19.0 
 13.6 
 13.0 
 8.6 
 6.1 
 
 42.0 
 
 2.. 
 
 12 
 
 22 
 
 32.0 
 
 3... 
 
 13 
 
 23 
 
 22.8 
 
 4... 
 
 14 
 
 24 
 
 13.3 
 
 5 
 
 15... 
 
 25 
 
 34.0 
 
 6 . 
 
 16 
 
 26.... 
 
 19.6 
 
 7 
 
 17... 
 
 27 
 
 13.0 
 
 8 . 
 
 18 
 
 28 
 
 6.1 
 
 9... 
 
 19 
 
 29 
 
 16.3 
 
 10... 
 
 20 
 
 30 
 
 10.0 
 
 
 
 31 
 
 13.0 
 
 
 
 
ISLAND OF HAW An. 
 
 225 
 
 Daily discharge, in second-feet, at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 (a) 
 (a) 
 (a) 
 
 («) 
 (a) 
 
 (a) 
 
 n. 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 2.3 
 2.3 
 
 (a) 
 
 (a) 
 (a) 
 («) 
 i. 2 
 
 15.0 
 30.0 
 40.0 
 20.0 
 10.0 
 
 6.0 
 5.0 
 5.0 
 4.0 
 
 4.00 
 3.50 
 3.30 
 2.40 
 1.70 
 
 1.70 
 1.70 
 2.10 
 2.50 
 3.00 
 
 3.90 
 16.00 
 21.00 
 23.00 
 18.00 
 
 14.00 
 21.00 
 21.00 
 21.00 
 21.00 
 
 21.00 
 15.00 
 12.00 
 9.30 
 6.60 
 
 4.00 
 2.50 
 1.70 
 2.40 
 3.00 
 15.00 
 
 10.00 
 8.00 
 7.00 
 11.00 
 13.00 
 
 14.00 
 40.00 
 37.00 
 35.00 
 30.00 
 
 27.00 
 21.00 
 18.00 
 14.00 
 12.00 
 
 7.00 
 9.00 
 11.00 
 12.00 
 8.00 
 
 15.00 
 13.00 
 11.00 
 13.00 
 15.00 
 
 17.00 
 16.00 
 16.00 
 10.00 
 15.00 
 
 15.00 
 15.00 
 18.00 
 23.00 
 30.00 
 
 13.00 
 10.00 
 8.00 
 7.00 
 6.00 
 
 5.00 
 5.00 
 4.90 
 4.30 
 3.70 
 
 3.10 
 2.50 
 3.00 
 3.60 
 3.20 
 
 2.80 
 2.40 
 2.00 
 1.80 
 1.50 
 
 1.50 
 1.60 
 2.00 
 2.40 
 2.80 
 3.10 
 
 ""4*9" 
 "6.T" 
 
 "4.'60' 
 "*3." 60* 
 
 "z.m 
 
 2.50 
 " "2. 50" 
 
 4.00 
 5.00 
 -8.00 
 3.90 
 1.70 
 
 .80 
 .60 
 .30 
 .20 
 3.60 
 
 30.00 
 
 10.00 
 
 2.90 
 
 3.00 
 
 .80 
 
 .80 
 .80 
 .70 
 .70 
 .60 
 
 .60 
 
 .40 
 
 .20 
 
 2.70 
 
 X.00 
 
 .30 
 .20 
 .20 
 .10 
 .10 
 .10 
 
 0.10 
 .20 
 10.00 
 5.30 
 2.30 
 
 2.10 
 1.90 
 1.70 
 2.10 
 1.50 
 
 1.20 
 .90 
 1.20 
 1.60 
 2.10 
 
 1.50 
 1.70 
 1.90 
 1.70 
 1.40 
 
 1.00 
 
 .80 
 .80 
 .80 
 .70 
 
 .60 
 2.30 
 2.00 
 1.50 
 1.00 
 1.50 
 
 18.00 
 20.00 
 33.00 
 40.00 
 30.00 
 
 19.00 
 21.00 
 15.00 
 8.90 
 7.00 
 
 5.20 
 6.80 
 4.40 
 4.00 
 3.60 
 
 3.30 
 2.90 
 2.50 
 2.30 
 1.70 
 
 2.10 
 1.70 
 1.50 
 1.40 
 1.10 
 
 .80 
 .70 
 .60 
 .50 
 5.70 
 
 4.20 
 2.60 
 1.70 
 
 .80 
 .70 
 
 .60 
 .50 
 .40 
 .80 
 1.20 
 
 1.50 
 4.60 
 2.90 
 1.20 
 1.20 
 
 1.00 
 
 8.60 
 
 21.00 
 
 25.00 
 
 30.00 
 
 30.00 
 35.00 
 40.00 
 38.00 
 18.00 
 
 13.00 
 40.00 
 35.00 
 35.00 
 30.00 
 16.00 
 
 26.00 
 30.00 
 40.00 
 25.00 
 21.00 
 
 16.00 
 11.00 
 8.90 
 20.00 
 40.00 
 
 38.00 
 17.00 
 13.00 
 11.00 
 10.00 
 
 22.00 
 25.00 
 22.00 
 25.00 
 21.00 
 
 14.00 
 12.00 
 13.00 
 11.00 
 8.90 
 
 6.40 
 4.90 
 15.00 
 12.00 
 8.60 
 
 20.00 
 
 2 
 
 
 35.00 
 
 
 2.7 
 2.3 
 2.0 
 
 2.1 
 2.3 
 2.7 
 2.5 
 2.0 
 
 1.4 
 .9 
 .8 
 .6 
 .5 
 
 .4 
 .4 
 .3 
 .3 
 .3 
 
 .2 
 .2 
 
 24.00 
 
 4 
 
 23.00 
 
 5 
 
 13.00 
 
 6. 
 
 10.00 
 
 7 
 
 11.00 
 
 8 
 
 20.00 
 
 9 
 
 11.00 
 
 10 
 
 8.20 
 
 11 
 
 6.20 
 
 12 
 
 4.60 
 
 13 
 
 2.90 
 
 14 
 
 2.90 
 
 15 
 
 6.10 
 
 16 
 
 8.40 
 
 17 
 
 4.20 
 
 18 
 
 3.40 
 
 19 
 
 6.10 
 
 20 
 
 12.00 
 
 21 
 
 8.60 
 
 22 
 
 25.00 
 
 23 
 
 40.00 
 
 24 
 
 30.00 
 
 25 
 
 22.00 
 
 26 
 
 25.00 
 
 27 
 
 26.00 
 
 28 
 
 16.00 
 
 29 
 
 11.00 
 
 30 
 
 10. 00 
 
 31 
 
 10.00 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the. camp near station No. 50. 
 
 Monthly discharge at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 1911-12 . 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 9.03 
 17.10 
 22.20 
 
 .83 
 4.96 
 9.62 
 16.20 
 6.36 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 558 
 1,020 
 1,370 
 
 51 
 
 285 
 
 964 
 391 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 4.00 
 2.56 
 1.79 
 8.82 
 14.20 
 18.80 
 15.20 
 
 18 
 
 Run-off 
 (total in 
 acre-feet). 
 
 238 
 
 . 157 
 
 110 
 
 525 
 
 873 
 1.120 
 
 3,240 
 
 14694°— wsp 336—14- 
 
 -15 
 
226 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements at station No. 4 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographef. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13 
 Sept. 27 
 
 E. O.Christiansen.. 
 do 
 
 Feet. - 
 0.74 
 
 .74 
 
 Sec.-ft. 
 
 0.15 
 
 .14 
 
 Nov. 21 
 Dec. 27 
 
 E. 0. Christiansen. 
 do 
 
 Feet. 
 0.78 
 .80 
 
 Sec.-ft. 
 0.51 
 
 .77 
 
 Note.— Bed of stream of sand and gravel, smooth, probably slightly shifting. One channel at all stages. 
 This stream is tributary to Wailuku River. 
 
 Daily discharge, in second-feet, at station No. 4 at -2, 700-foot level, near Hilo, Hawaii, for 
 
 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.08 
 .08 
 .94 
 .80 
 .73 
 
 .66 
 .66 
 .59 
 .52 
 .45 
 
 (a) 
 
 n 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 («) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 .24 
 .45 
 .24 
 
 11 
 
 0.45 
 .45 
 .38 
 .38 
 .31 
 
 .24 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 .31 
 .31 
 
 (a) 
 (a) 
 .24 
 .31 
 .38 
 
 0.38 
 
 .24 
 
 .66 
 
 1.08 
 
 1.92 
 
 1.92 
 1.08 
 1.08 
 1.36 
 .66 
 
 21 
 
 (a) 
 \a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 0.45 
 .52 
 .59 
 .66 
 .66 
 
 .45 
 .38 
 .45 
 .24 
 (a) 
 
 0.45 
 
 2 
 
 12 
 
 22 
 
 .24 
 
 3 
 
 13 
 
 23 
 
 .80 
 
 4 
 
 14 
 
 24 
 
 5 
 
 15 
 
 25 
 
 6 
 
 16 
 
 26 
 
 .45 
 
 7 
 
 17 
 
 27 
 
 .38 
 
 8 . 
 
 18... 
 
 28 
 
 .24 
 
 9 
 
 19 
 
 29 
 
 .52 
 
 10 . 
 
 20 
 
 30 
 
 .38 
 
 
 
 31 
 
 .45 
 
 
 
 
 a Channel dry. 
 
 Daily gage height, in feet, at station No. 4 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 . ..' 
 
 
 
 
 
 
 
 
 0.71 
 
 
 0.S2 
 .79 
 
 0.80 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.72 
 
 .70 
 .70 
 
 .70 
 .70 
 .72 
 .70 
 .70 
 
 .70 
 .70 
 .69 
 .69 
 
 .68 
 
 .65 
 
 
 0.49 
 
 6.60 
 
 .66 
 .66 
 
 .64 
 
 
 
 0.80 
 
 .75 
 .74 
 
 .71 
 
 """.'69' 
 .68 
 .75 
 
 
 
 
 0.78 
 
 4 
 
 1.22 
 1.05 
 
 "6." 28" 
 
 ""'."25" 
 
 .79 
 
 .72 
 
 ----- 
 
 .72 
 .75 
 .74 
 
 "6." 89' 
 
 .84 
 .91 
 .90 
 .80 
 
 .75 
 .79 
 .75 
 .75 
 .74 
 
 .79 
 
 .75 
 
 .74 
 
 .74 
 
 ""."72" 
 
 "".'75' 
 
 .75 
 .78 
 .78 
 .76 
 
 "".'S4' 
 
 ""."75' 
 .75 
 .80 
 
 '"'.'85' 
 .82 
 .78 
 
 .80 
 
 5 
 
 
 
 .75 
 
 6 
 
 
 
 .72 
 
 7 
 
 
 .35 
 
 .72 
 
 8 
 
 
 
 .78 
 
 9 
 
 
 .38 
 .38 
 
 .54 
 .70 
 .79 
 .90 
 .80 
 
 .62 
 .89 
 
 
 
 
 .74 
 
 10 
 
 .75 
 
 .74 
 .68 
 
 
 
 .74 
 
 11 
 
 .72 
 
 12. 
 
 
 
 
 .71 
 .75 
 
 .72 
 
 13 
 
 
 .50 
 
 .71 
 
 .71 
 
 14 
 
 .61 
 .69 
 
 .68 
 
 ""."68" 
 .70 
 .69 
 
 .80 
 .76 
 .68 
 
 .80 
 
 .72 
 
 15 
 
 .49 
 
 .69 
 
 .76 
 
 .72 
 
 .75 
 
 16 
 
 
 .80 
 
 .78 
 
 17 
 
 .60 
 
 .51 
 
 
 .72 
 
 18 
 
 
 
 
 .75 
 
 .78 
 .78 
 .75 
 
 .75 
 .80 
 .78 
 .75 
 
 .74 
 .73 
 .72 
 .71 
 .85 
 
 .78 
 .80 
 
 ""."86" 
 
 .85 
 
 .82 
 
 .78 
 
 "".'80 
 
 .79 
 .75 
 .75 
 
 .74 
 
 19 .. 
 
 .64 
 .62 
 
 .62 
 .62 
 .61 
 .60 
 
 
 
 .56 
 
 
 
 .78 
 
 20 
 
 0.83 
 
 .72 
 
 .70 
 .02 
 .66 
 
 
 
 
 
 21 
 
 
 .50 
 
 .52 
 
 ""."68" 
 .68 
 .70 
 .68 
 
 .66 
 .75 
 
 .75 
 
 22 
 
 
 23 
 
 .50 
 
 
 .50 
 .65 
 
 .55 
 
 ' .55 
 
 .55 
 
 .52 
 
 
 24 
 
 
 25 
 
 
 .60 
 
 .60 
 .58 
 .52 
 .51 
 .64 
 
 .71 
 
 .76 
 
 .72 
 .72 
 
 .50 
 
 ""."45" 
 
 .60 
 
 .58 
 .60 
 .56 
 
 .75 
 
 .78 
 .75 
 
 .75 
 
 26 
 
 
 
 
 27 . 
 
 .62 
 .61 
 .61 
 .60 
 
 
 .80 
 
 28 
 
 .75 
 
 29 
 
 
 
 .72 
 
 30 
 
 
 
 
 ""."74" 
 
 .78 
 
 
 31 
 
 
 .35 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 227 
 
 Daily discharge, in second-feet, at station No. 4 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.25 
 .25 
 .25 
 .10 
 .10 
 
 .10 
 .10 
 .25 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 (a) 
 (a) 
 
 0.10 
 .10 
 .05 
 
 (a) 
 
 (a) 
 
 0.50 
 .20 
 .05 
 .10 
 .10 
 
 .05 
 4.50 
 4.00 
 2.00 
 
 .45 
 
 .40 
 .10 
 .10 
 .05 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .80 
 .50 
 .10 
 .10 
 .15 
 
 .50 
 .25 
 .25 
 .20 
 .10 
 
 0.50 
 .50 
 1.00 
 6.68 
 6.00 
 
 4.30 
 
 2.00 
 
 .50 
 
 .20 
 
 .20 
 
 .20 
 .20 
 .20 
 .80 
 .50 
 
 .50 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 "6.'05" 
 
 .05 
 .05 
 
 0.10 
 
 .40 
 .80 
 .45 
 .40 
 
 .15 
 .10 
 .10 
 .10 
 .45 
 
 1.00 
 .40 
 .15 
 .30 
 .10 
 
 .10 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.15 
 
 .20 
 
 1.00 
 
 .75 
 .25 
 
 .20 
 .40 
 .25 
 .45 
 .40 
 
 .30 
 .15 
 .45 
 .50 
 .50 
 
 .25 
 .35 
 .45 
 .60 
 .30 
 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .45 
 .30 
 .20 
 .10 
 .20 
 
 0.50 
 .80 
 5.00 
 3.50 
 2.05 
 
 1.35 
 
 2.35 
 
 2.20 
 
 .80 
 
 .60 
 
 .45 
 .75 
 .45 
 .45 
 .40 
 
 .75 
 .70 
 .65 
 .65 
 .45 
 
 .45 
 .80 
 .65 
 .45 
 .40 
 
 .40 
 .30 
 .25 
 .15 
 1.50 
 
 1.10 
 .75 
 .60 
 .45 
 .40 
 
 .40 
 .30 
 .25 
 .30 
 .45 
 
 .45 
 .65 
 .65 
 .50 
 .50 
 
 .30 
 1-00 
 .65 
 .80 
 .80 
 
 .80 
 3.00 
 5.00 
 1.65 
 1.50 
 
 1.10 
 6.00 
 4.00. 
 4.00 
 2.00 
 .40 
 
 0.80 
 .50 
 4.00 
 2.00 
 1.35 
 
 .50 
 .45 
 .45 
 .80 
 5.00 
 
 4.00 
 
 1.50 
 
 1.10 
 
 .65 
 
 .20 
 
 .80 
 2.00 
 
 .65 
 1.50 
 
 .80 
 
 .75 
 .45 
 .45 
 .45 
 .45 
 
 .65 
 .45 
 1.00 
 .80 
 .65 
 
 2.00 
 
 2 
 
 4.00 
 
 3 
 
 .65 
 
 4 
 
 .80 
 
 5 
 
 .45 
 
 6 
 
 .25 
 
 7 ..... 
 
 
 
 .25 
 
 8 
 
 (a) 
 
 
 .65 
 
 9 
 
 .40 
 
 10 
 
 "(a)" 
 1.20 
 
 3.00 
 5.00 
 6.00 
 4.00 
 2.00 
 
 1.00 
 .50 
 .50 
 .30 
 
 (a) 
 
 .10 
 .10 
 
 .75 
 
 2.20 
 
 .80 
 
 .05 
 2.05 
 3.00 
 4.00 
 
 .25 
 
 .10 
 .05 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 2.00 
 
 .40 
 
 11 
 
 .25 
 
 12 
 
 .25 
 
 13 
 
 .15 
 
 14 
 
 .25 
 
 15 
 
 .45 
 
 16 
 
 .65 
 
 17 
 
 .25 
 
 18 
 
 19 
 
 .40 
 
 .65 
 
 20 
 
 1.00 
 
 21 
 
 .45 
 
 22 
 
 2.00 
 
 23 
 
 5.00 
 
 24 
 
 3.00 
 
 25 
 
 .45 
 
 26 
 
 .60 
 
 27 
 
 .80 
 
 28 
 
 .45 
 
 29 
 
 .25 
 
 30 
 
 .20 
 
 31 
 
 .20 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days* for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 4 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.31 
 .20 
 .49 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 19.30 
 11.80 
 30.20 
 
 5.53 
 46.60 
 32.00 
 32.10 
 49.80 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.05 
 .19 
 .32 
 1.01 
 1.31 
 1.17 
 
 .64 
 
 2.98 
 11.70 
 19.70 
 60.10 
 80.60 
 69.60 
 54.70 
 
 465.00 
 
 Discharge measurements at station No. 5 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13 
 
 E. O. Christiansen ] 
 
 Feet. 
 0.24 
 
 Sec.-ft. 
 
 Sept. 27 
 
 do 
 
 (a) 
 0.20 
 
 Nov. 21 
 
 do 
 
 .59 
 .60 
 
 Dec. 25 
 
 do 
 
 .21 
 
 
 
 
 a Channel dry. 
 
 Note.— Bed of stream of sand, silt, and gravel; probably shifting. One channel at all stages. 
 This stream is tributary to Wailuku River. 
 
228 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 5 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayefi, Selitonott, and KuznetsofE, observers.] 
 
 Day. " 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 (a) 
 
 
 0.25 
 .25 
 
 0.52 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.58 
 .55 
 .54 
 
 .55 
 .55 
 .58 
 .56 
 .54 
 
 .51 
 .50 
 .50 
 .44 
 .40 
 
 .35 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 
 0.41 
 .42 
 .46 
 
 .48 
 
 
 
 6.60 
 .55 
 .50 
 
 .48 
 
 • '[a)" 
 (a) 
 (a) 
 
 
 
 
 0.55 
 
 4 
 
 0.76 
 .50 
 
 ""(«)*" 
 
 "(«)" 
 
 0.60 
 (a) 
 
 ""\*50" 
 .45 
 .42 
 .49 
 
 "6." 59' 
 
 .55 
 .59 
 
 .50 
 .50 
 
 .44 
 .50 
 .40 
 .40 
 .35 
 
 .36 
 
 (a) 
 (a) 
 
 (a) 
 
 "(a)" 
 
 ""(«)" 
 
 (a) 
 .32 
 
 (a) 
 (a) 
 
 ""."55' 
 
 ""."56" 
 .50 
 
 .59 
 
 ""."55" 
 .52 
 .39 
 
 .61 
 
 5 
 
 .52 
 
 6 
 
 .48 
 
 7 
 
 "la)" 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 .71 
 
 (a) 
 
 .48 
 
 8 
 
 
 
 .55 
 
 9 
 
 (a) 
 (a) 
 
 (a) 
 0.47 
 .47 
 .60 
 .49 
 
 .50 
 .72 
 
 "".'60' 
 
 .59 
 .42 
 .51 
 
 
 
 
 .54 
 
 10 
 
 .50 
 
 .50 
 
 .48 
 
 
 
 .54 
 
 11 
 
 
 
 .52 
 
 12 
 
 (a) 
 
 
 
 (a) 
 .12 
 
 .45 
 
 13 
 
 0.40 
 
 .50 
 
 .45 
 
 14 
 
 .31 
 .42 
 
 .41 
 
 .50 
 
 .50 
 .44 
 
 .50 
 .44 
 .41 
 
 
 .46 
 
 15 
 
 
 .38 
 
 (a) 
 
 .35 
 (a) 
 
 .52 
 
 16 
 
 
 .55 
 
 .56 
 
 
 (») 
 
 .41 
 
 
 .46 
 
 18 
 
 
 
 .34 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (<*) 
 
 (a) 
 (a) 
 .38 
 
 .50 
 .50 
 
 '""."56* 
 .52 
 
 .50 
 
 .52 
 
 ""55" 
 
 .59 
 .55 
 .52 
 
 .45 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 
 
 .51 
 
 20 
 
 
 
 
 
 21 
 
 
 w 
 
 (a) 
 
 "W 
 
 (a) 
 
 («) 
 
 (a) 
 
 (a) 
 
 .35 
 
 .52 
 
 22 
 
 
 23 
 
 (a) 
 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 24 
 
 
 25 
 
 
 .46 
 
 .31 
 .00 
 .00 
 .00 
 .50 
 
 .51 
 
 .52 
 .52 
 .52 
 
 (a) 
 
 (a) 
 (a) 
 
 .55 
 
 .55 
 .52 
 
 .58 
 
 26 
 
 
 
 
 27 
 
 (a) 
 (a) 
 
 
 .61 
 
 28 
 
 .54 
 
 29 
 
 
 
 .54 
 
 30 
 
 (a) 
 
 
 
 
 
 ™:ft- 
 
 .56 
 
 
 31 
 
 
 (a) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 5 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.38 
 .35 
 .31 
 .28 
 .24 
 
 .21 
 .21 
 .20 
 .20 
 - .20 
 
 0.10 
 .10 
 .10 
 .12 
 .15 
 
 .15 
 .16 
 .17 
 .18 
 .19 
 
 0.15 
 .12 
 .11 
 .12 
 .14 
 
 .12 
 .11 
 .14 
 
 .18 
 .14 
 
 11 
 
 0.20 
 .20 
 .19 
 .18 
 .17 
 
 .16 
 .15 
 .15 
 .15 
 .15 
 
 0.19 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 0.16 
 .14 
 .20 
 .28 
 
 .28 
 
 .48 
 .25 
 .25 
 .26 
 .26 
 
 21 
 
 0.15 
 .14 
 .13 
 .12 
 .11 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.20 
 .21 
 .21 
 .21 
 .21 
 
 .20 
 .20 
 .21 
 .19 
 
 .18 
 
 0.24 
 
 2 
 
 12 
 
 22 
 
 .21 
 
 3 
 
 13 
 
 23 
 
 .20 
 
 4 
 
 14 
 
 24 
 
 25 
 
 .18 
 
 5 
 
 15 
 
 .28 
 
 6 
 
 16 
 
 26.. 
 
 .20 
 
 7 
 
 17 
 
 27... 
 
 .20 
 
 8 
 
 18 
 
 28... . 
 
 .20 
 
 9 
 
 19 
 
 29. 
 
 .21 
 
 10 
 
 20.... 
 
 30 
 
 .20 
 
 
 
 31 
 
 .20 
 
 
 
 
ISLAND OF HAWAII. 
 
 229 
 
 Daily discharge, in second-feet, at station No. 5 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.20 
 .20 
 .20 
 .15 
 .15 
 
 .15 
 .15 
 .20 
 .15 
 .15 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 i 
 
 (a) 
 (a) 
 
 (°) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (*) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 0.30 
 
 .40 
 .50 
 1.00 
 .60 
 .40 
 
 .30 
 .20 
 .10 
 .10 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a 
 (a) 
 (a) 
 
 (a) 
 0.10 
 .10 
 .20 
 .10 
 
 .10 
 .30 
 .30 
 .20 
 .20 
 
 .20 
 .05 
 .10 
 .10 
 .10 
 
 (a) 
 (a) 
 
 . .10 
 
 .40 
 
 0.20 
 .10 
 .05 
 .05 
 .10 
 
 .10 
 .20 
 .15 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .10 
 .10 
 .05 
 
 .10 
 .05 
 .05 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 
 
 
 (a) 
 
 
 
 0.10 
 
 
 2 
 
 
 
 
 
 
 
 3 
 
 
 
 0.20 
 .15 
 .10 
 
 .10 
 
 
 
 
 
 0.15 
 
 4 
 
 a 35 
 
 .10 
 
 "■(a)"" 
 
 (a) 
 (a) 
 
 0.20 
 (a) 
 
 ""."16" 
 .05 
 .05 
 .10 
 
 " "6." 26" 
 
 .15 
 .20 
 .10 
 .10 
 
 .05 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 
 ""."15" 
 
 "*."io" 
 
 .10 
 .20 
 
 """."is" 
 
 .10 
 
 .05 
 
 .20 
 
 5 
 
 .10 
 
 6 
 
 .10 
 
 7 
 
 .10 
 
 8 
 
 .15 
 
 9 
 
 
 
 
 .15 
 
 10 
 
 
 
 
 .15 
 
 11 
 
 
 
 
 .10 
 
 12 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 .(a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 
 (a) 
 
 .05 
 
 13 
 
 0.05 
 
 .10 
 
 .05 
 
 14 
 
 .10 
 
 15. . 
 
 .05 
 ""."05' 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .05 
 (a) 
 
 
 16 
 
 
 .15 
 
 .15 
 
 17... 
 
 .10 
 
 18 
 
 "(if 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 .05 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 Hi 
 
 0.10 
 
 .10 
 
 ""15" 
 
 .10 
 .10 
 
 .10 
 
 """."i5 _ 
 
 .20 
 
 .15 
 .10 
 
 .05 
 
 19 
 
 .10 
 
 20 
 
 
 21 
 
 .10 
 
 22 
 
 
 23 
 
 
 24... 
 
 
 25 
 
 .15 
 
 .15 
 .10 
 
 .20 
 
 26 
 
 
 27 
 
 .20 
 
 28 
 
 .15 
 
 29..... 
 
 
 
 .15 
 
 30 
 
 "*".*I6" 
 
 .15 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 
 station No. 50. 
 
 Monthly discharge at station No. 5 at 2,700-foot level, near Eilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 0.18 
 
 .18 
 .20 
 
 .07 
 .13 
 .09 
 .09 
 
 .07 
 
 Run-ofC 
 
 (total in 
 
 acre-feet). 
 
 10.90 
 10.70 
 12.30 
 
 4.30 
 7.48 
 5.53 
 5.36 
 4.30 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November :...... 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.02 
 .05 
 .08 
 .08 
 .20 
 .15 
 .15 
 
 .10 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.19 
 3.07 
 4.92 
 4.76 
 12.30 
 8.93 
 9.22 
 
 71.00 
 
230 WATER RESOURCES OP HAWAII, 1912. 
 
 Discharge measurements at station No. 6 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13 
 
 Sept. 27 
 Nov. 21 
 
 E . . Christiansen 
 
 Feet. 
 
 Sec.-ft. 
 (a) 
 (a) 
 
 do 
 
 
 do. . 
 
 0.10 
 .38 
 
 
 Dec. 27 
 
 ..... do 
 
 6.05 
 
 
 
 
 a Channel dry. 
 
 Note. — Bed of stream of sand, silt, and gravel; probably shifting. One channel at all stages. 
 This stream is tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 6 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 (a) 
 
 
 0.25 
 .. .20 
 
 0.40 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.32 
 .31 
 .30 
 
 .32 
 .34 
 .38 
 .35 
 .32 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 —(a)" 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 0.32 
 .33 
 
 .34 
 
 .40 
 
 
 
 0.58 
 .32 
 .22 
 
 .22 
 
 "(a)" 
 (a) 
 (a) 
 
 
 
 
 
 0.34 
 
 4. 
 
 0.70 
 .50 
 
 "(a)" 
 
 '"(a)" 
 
 0.58 
 (a) 
 
 ""."ii" 
 .41 
 .35 
 .41 
 
 "6.' 55" 
 
 .40 
 .44 
 .34 
 .24 
 
 .24 
 .30 
 .25 
 .30 
 25 
 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 
 "(a)"' 
 
 "(•)"" 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 """32" 
 
 "{a)" 
 (a) 
 .35 
 
 ""."39" 
 .36 
 .30 
 
 .32 
 
 5..... 
 
 (a) 
 (a) 
 
 6 
 
 7 .... 
 
 —(a)" 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 0.52 
 
 (a) 
 
 (a) 
 .31 
 
 8 . 
 
 
 
 9 .. 
 
 (a) 
 (a) 
 
 («) 
 
 0.29 
 .36 
 .41 
 .34 
 
 .31 
 .66 
 
 """.58' 
 
 .51 
 
 .41 
 .49 
 
 
 
 
 .20 
 
 10 
 
 .41 
 
 .38 
 .34 
 
 "\"3i" 
 
 .40 
 
 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 11 • 
 
 
 
 12 . 
 
 
 
 ~ 
 
 (a) 
 (a) 
 
 13 
 
 (a) 
 
 (a) 
 
 .40 
 
 14 
 
 (a) 
 .21 
 
 15 
 
 
 (a) 
 
 (a) 
 
 .15 
 
 (a) 
 
 16.. .. 
 
 
 .38 
 
 .18 
 
 17... 
 
 '"."42' 
 .45 
 .46 
 
 .46 
 .41 
 .39 
 
 (a) 
 
 (a) 
 
 
 (a) 
 
 18 
 
 
 
 .14 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 .28 
 
 .35 
 .32 
 
 '".'38' 
 («) 
 
 (a) 
 
 .34 
 
 ""."36' 
 
 .20 
 (a) 
 .30 
 
 19 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 
 
 20 
 
 
 
 
 
 21 
 
 ""(«)" 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 
 .18 
 
 .20 
 
 22... 
 
 
 23 
 
 
 (a) 
 
 .49 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 24 
 
 (a) 
 "(a)" 
 
 "(a)" 
 
 (a) 
 (a) 
 (a) 
 
 
 25 . 
 
 
 .42 
 
 (a) 
 fa) 
 
 (a) 
 
 .43 
 
 .50 
 .51 
 .50 
 
 (a) 
 
 (a) 
 (a) 
 
 .32 
 
 26 
 
 
 
 
 27 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 .36 
 
 28 
 
 (a) 
 .21 
 
 29 
 
 
 
 30 .. 
 
 
 
 
 "".'36' 
 
 .35 
 
 
 
 
 (a) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 6 at 2,700-foot level, near Hilo, Havjaii, 
 
 for 1911. 
 
 Day. 
 
 l 
 2 
 3 
 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 0.10 
 
 (a) 
 
 0.01 
 
 .10 
 
 (a) 
 
 (°) 
 
 .10 
 
 0.01 
 
 (a) 
 
 .10 
 
 .01 
 
 .02 
 
 .10 
 
 .02 
 
 .02 
 
 .10 
 
 .03 
 
 (a) 
 
 .10 
 
 .03 
 
 (a) 
 
 .10 
 
 .03 
 
 .01 
 
 .05 
 
 .03 
 
 .03 
 
 .05 
 
 .04 
 
 .02 
 
 Day. 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 
 IS 
 19 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 0.05 
 
 0.04 
 
 0.02 
 
 .05 
 
 .04 
 
 .03 
 
 .04 
 
 .05 
 
 .05 
 
 .03 
 
 .05 
 
 .10 
 
 .03 
 
 .05 
 
 .10 
 
 .02 
 
 .05 
 
 .05 
 
 .01 
 
 .05 
 
 .05 
 
 .01 
 
 .05 
 
 .05 
 
 (a) 
 
 .05 
 
 .05 
 
 (a) 
 
 .05 
 
 .05 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 21 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 ( a ) 
 (a) 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .02 
 .02 
 .01 
 .01 
 
 22 
 
 23 
 
 24 
 
 25 
 
 26 
 
 27 
 
 28 
 
 29 
 
 30 
 
 31 
 
 
 Dec. 
 
 0.03 
 .01 
 
 (a) 
 
 (a) 
 .05 
 
 .05 
 .02 
 .02 
 .05 
 .05 
 .05 
 
 a Channel dry. 
 
ISLAND OF HAWAII. 231 
 
 Monthly discharge at station No. 6 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 October . . . 
 November. 
 December . 
 
 1911. 
 
 January . . 
 February. 
 
 March 
 
 April 
 
 May 
 
 1912. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.03 
 .03 
 .03 
 
 .01 
 .10 
 .10 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 2.26 
 2.06 
 1.95 
 
 .62 
 5.72 
 6.15 
 
 4.76 
 .62 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September. 
 
 October 
 
 November 
 
 December 
 
 The year . 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.00 
 .02 
 .02 
 .03 
 .04 
 .01 
 .01 
 
 .04 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.00 
 1.23 
 1.23 
 1.79 
 2.46 
 .60 
 
 25.80 
 
 Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discbarge 
 for periods for which gage heights are missing estimated by means of rainfall; diagram prepared from 
 rainfall record at camp near station No. 50. 
 
 Discharge measurements at station No. 7 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.) 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage, 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13. 
 
 Feet. 
 0.33 
 .21 
 
 Sec.-ft. 
 0.04 
 
 Nov. 21 
 
 Feet. 
 0.39 
 .44 
 
 Sec.-ft. 
 0.06 
 
 Sept. 27 
 
 Dec. 27 
 
 .11 
 
 
 
 
 
 Note. — Bed of stream of sand, silt, and gravel; probably shifting. One channel at all stages. 
 This stream is tributary to the Wailuku River. 
 
 Daily gage height, in feet, at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Seiitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.42 
 
 
 0.39 
 .35 
 
 0.42 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.32 
 .31 
 .30 
 
 .35 
 .36 
 .40 
 .39 
 .36 
 
 .31 
 .30 
 .28 
 .25 
 .10 
 
 (a) 
 
 ""(a)" 
 (a) 
 
 0.33 
 .31 
 
 .30 
 
 0.31 
 .33 
 .38 
 
 .41 
 
 
 
 0.48 
 .45 
 .42 
 
 .39 
 
 ""."35" 
 .32 
 
 .38 
 
 
 
 
 0.42 
 
 4 
 
 0.69 
 .50 
 
 *"(«)" 
 "la)" 
 
 .42 
 .30 
 
 "'"."35' 
 .30 
 .35 
 
 .38 
 
 "'6.' 44" 
 
 .45 
 
 .58 
 .42 
 .40 
 
 .35 
 .39 
 .32 
 .35 
 .32 
 
 .36 
 
 .25 
 
 .21 
 
 .21 
 
 "".'2l' 
 
 "".'32" 
 
 .31 
 .35 
 .31 
 .32 
 
 ■•■■-■ 
 
 ""."35' 
 .38 
 .49 
 
 ""."46" 
 .42 
 
 .48 
 
 .42 
 
 5 
 
 .38 
 
 6 
 
 .36 
 
 7 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 
 0.24 
 .20 
 .15 
 
 .10 
 (a) 
 (a) 
 
 .32 
 
 .74 
 
 .30 
 
 .35 
 
 8 
 
 
 
 .41 
 
 9 
 
 .32 
 
 .32 
 
 .35 
 .41 
 .49 
 .75 
 .49 
 
 .41- 
 .59 
 
 "".'57' 
 
 .51 
 .39 
 
 .44 
 
 
 
 
 .38 
 
 10 
 
 .44 
 
 .44 
 .36 
 
 "".'32* 
 
 .38 
 
 .36 
 
 "".'46" 
 .41 
 .40 
 
 .48 
 .44 
 .38 
 
 
 
 .34 
 
 11 
 
 
 
 .32 
 
 12 
 
 
 
 
 .24 
 .32 
 
 .30 
 
 13 
 
 .40 
 
 0.23 
 
 .38 
 
 .28 
 
 14 
 
 .29 
 
 15 
 
 
 .20 
 
 .35 
 
 .36 
 .38 
 
 .34 
 
 16 
 
 
 .40 
 
 .36 
 
 17 
 
 .30 
 
 .30 
 
 
 .30 
 
 18... 
 
 
 
 .38 
 
 .34 
 .32 
 .30 
 
 .31 
 .29 
 .25 
 .22 
 
 .21 
 .21 
 .21 
 .20 
 .40 
 
 .38 
 .40 
 
 '"."48" 
 .42 
 
 .40 
 
 .40 
 
 """.'44" 
 
 .39 
 .38 
 .40 
 
 .31 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .24 
 
 
 
 .34 
 
 20 
 
 
 
 
 
 21 
 
 
 .28 
 
 .34 
 
 ""."26' 
 
 .20 
 .23 
 .20 
 
 .20 
 .34 
 
 40 
 
 22 
 
 
 23 
 
 .25 
 
 
 .32 
 
 .38 
 
 .25 
 .20 
 .20 
 .20 
 
 
 24 
 
 
 25 
 
 
 .39 
 
 .32 
 .30 
 .29 
 .29 
 .34 
 
 .41 
 
 .44 
 .44 
 .44 
 
 .21 
 
 ""."26' 
 
 .31 
 
 .28 
 .32 
 .29 
 
 .38 
 
 .35 
 .32 
 
 .42 
 
 26 
 
 
 
 
 27 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 42 
 
 28 
 
 .38 
 
 29 
 
 
 
 .31 
 
 30 
 
 
 
 
 ""."46' 
 
 .40 
 
 
 31 
 
 
 (a) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
232 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 
 0.01 
 .01 
 .01 
 .03 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.01 
 .01 
 .01 
 .02 
 .02 
 
 .03 
 .03 
 .03 
 .03 
 .03 
 
 11.... 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 
 .05 
 .05 
 .10 
 .10 
 
 .05 
 ,05 
 .05 
 .05 
 .05 
 
 0.03 
 
 .03 
 .05 
 .10 
 .10 
 
 .05 
 .05 
 .10 
 .10 
 .05 
 
 21 
 
 0.05 
 .05 
 .04 
 .04 
 .03 
 
 .03 
 .02 
 .02 
 .01 
 .01 
 .01 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .02 
 
 0.05 
 
 2 
 
 12 
 
 22 
 
 .05 
 
 2 
 
 13 
 
 23 
 
 .03 
 
 4 
 
 14 
 
 24.. 
 
 .01 
 
 5 
 
 15 
 
 25 
 
 .05 
 
 6 
 
 16 
 
 26.. . 
 
 .05 
 
 7 
 
 17 
 
 27 
 
 .04 
 
 8 
 
 18 
 
 28 
 
 .02 
 
 9 
 
 19 
 
 29.. . . 
 
 .05 
 
 10 
 
 20 
 
 30 
 
 .05 
 
 
 
 31 
 
 .03 
 
 Daily discharge, in second-feet, at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.05 
 
 
 0.05 
 .05 
 
 0.05 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 
 
 
 
 
 
 0.10 
 .05 
 .05 
 
 .05 
 
 
 
 
 0.05 
 
 4 
 
 
 
 
 
 0.30 
 
 
 .05 
 
 '"'.'05' 
 
 "".'65* 
 .05 
 
 
 
 
 .05 
 
 5 
 
 
 
 
 0.05 
 .05 
 
 0.05 
 
 .05 
 .20 
 .05 
 .05 
 
 
 .05 
 
 .05 
 
 6.. 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 
 
 .10 
 
 
 .05 
 
 7 
 
 
 
 
 .05 
 .05 
 .10 
 
 .05 
 
 8 
 
 
 
 
 
 
 .05 
 
 .05 
 
 9 
 
 
 
 
 
 
 .05 
 
 10 
 
 
 
 .05 
 
 .05 
 .05 
 
 
 
 .05 
 
 
 11 
 
 
 0.05 
 .05 
 .10 
 .35 
 .10 
 
 .05 
 .20 
 
 
 
 .05 
 .05 
 
 
 
 
 12 
 
 
 
 
 
 
 
 .05 
 
 .10 
 
 .05 
 .10 
 
 
 13... 
 
 
 
 .05 
 
 
 .05 
 
 
 
 14 
 
 
 
 
 .05 
 
 
 
 15 
 
 
 
 .05 
 .05 
 
 
 
 .05 
 
 .05 
 .05 
 
 
 16 
 
 
 
 
 
 .05 
 
 
 .05 
 
 .05 
 
 17. 
 
 
 
 
 
 
 
 18. 
 
 
 
 .05 
 .05 
 .05 
 
 .10 
 .05 
 .05 
 
 
 
 
 .05 
 
 
 .05 
 .05 
 
 .05 
 
 
 19 
 
 
 
 
 
 
 
 
 20... 
 
 
 0.35 
 
 .15 
 
 .10 
 .05 
 .05 
 
 
 
 
 
 
 .05 
 
 .05 
 .05 
 .05 
 
 
 21 
 
 
 
 
 
 
 
 
 .05 
 
 22 
 
 
 
 
 
 
 
 
 
 
 23.. 
 
 
 
 
 
 
 
 
 
 
 24 
 
 
 
 
 
 .05 
 
 
 
 .10 
 .05 
 
 .05 
 
 
 25 
 
 
 
 .05 
 
 .05 
 
 .05 
 .05 
 .05 
 
 
 
 
 
 .05 
 .05 
 
 .05 
 
 26 
 
 
 
 
 
 
 
 
 
 27 
 
 
 
 
 
 
 
 
 
 .05 
 
 28 
 
 
 
 
 
 
 
 
 
 
 
 .05 
 
 29 
 
 
 
 
 
 
 
 
 
 
 
 
 30 
 
 
 
 
 
 
 
 
 
 .05 
 
 "".'65' 
 
 .05 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 1" 
 
 
 
 
 
 
 
 
 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 
 near station No. 50. 
 
ISLAND OF HAWAII. 233 
 
 Monthly discharge at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 1911^12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May ."'. 
 
 dis- 
 charge in 
 second- 
 feet. 
 
 0.05 
 .05 
 .04 
 
 .02 
 .10 
 .10 
 .05 
 .05 
 
 Run-off 
 (total in 
 acre-feet). 
 
 2.82 
 
 1.23 
 5.75 
 6.15 
 2.98 
 3.07 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 D ecember 
 
 The year 
 
 Mean 
 dis- 
 charge in 
 second- 
 feet. 
 
 0.02 
 .05 
 .05 
 .07 
 .20 
 .15 
 .05 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.19 
 3.07 
 3.07 
 4.17 
 12.30 
 8.93 
 3.07 
 
 55.00 
 
 Discharge measurements at station No. 8 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13 
 
 Feet. 
 0.92 
 .73 
 
 Sec. ft. 
 0.16 
 
 Nov.21 
 
 Feet. 
 1.05 
 1.19 
 
 Sec.ft. 
 0.84 
 
 Sept. 27 
 
 Dec. 27 
 
 1.89 
 
 
 
 
 
 Note. — Bed of stream composed of gravel and small cobbles; is fairly smooth; shifting; one channel at 
 all stages. This stream is tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 8 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.80 
 
 
 1.05 
 .98 
 
 1.05 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.76 
 .75 
 
 .74 
 
 .76 
 
 .78 
 .81 
 .79 
 .75 
 
 .72 
 .71 
 .70 
 .70 
 .50 
 
 .41 
 
 "(«)" 
 
 (a) 
 
 0.81 
 .79 
 
 .74 
 
 0.71 
 
 .74 
 
 .84 
 
 .86 
 
 
 
 1.14 
 1.10 
 1.00 
 
 .95 
 
 """."96" 
 
 .85 
 .85 
 
 
 
 
 1. 12 
 
 4 
 
 1.19 
 .90 
 
 "b'.lo 
 """.'35" 
 
 .99 
 
 .88 
 
 '""."96" 
 .88 
 .90 
 .90 
 
 ""i.'l9' 
 
 1.14 
 1.20 
 1.10 
 1.00 
 
 .94 
 1.01 
 
 .99 
 1.00 
 
 .96 
 
 .99 
 
 .84 
 .81 
 
 .81 
 
 \"80' 
 
 "'"."85" 
 
 .82 
 1.02 
 
 .85 
 
 .85 
 
 'T26' 
 
 ""."95' 
 1.00 
 1.20 
 
 '"i."26" 
 1.11 
 .95 
 
 1. 15 
 
 5 
 
 1.15 
 
 6 
 
 1.12 
 
 7 
 
 (a) 
 (a) 
 
 (a) 
 
 («) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (o) 
 
 (a) 
 
 0.68 
 
 1.01 
 
 .70 
 
 1.12 
 
 8 
 
 
 
 1.15 
 
 9 
 
 .78 
 .74. 
 
 .81 
 .98 
 .99 
 1.32 
 1.02 
 
 .82 
 1.01 
 
 'T65' 
 
 1.00 
 
 .88 
 .90 
 
 
 
 
 1.14 
 
 10 
 
 1.11 
 
 1.04 
 .99 
 
 """.'85' 
 .99 
 
 .90 
 
 """."89" 
 .89 
 .86 
 
 1.05 
 1.01 
 .89 
 
 
 
 1.11 
 
 11 
 
 
 
 1.04 
 
 12 
 
 
 
 
 .80 
 .91 
 
 .94 
 
 13 
 
 .81 
 
 .50 
 
 1.00 
 
 .91 
 
 14 
 
 .92 
 
 15 
 
 
 .40 
 
 .88 
 
 .95 
 
 1.01 
 
 16 
 
 
 1.15 
 
 1.18 
 
 17 
 
 .72 
 
 .65 
 
 
 1.01 
 
 18 
 
 
 
 .91 
 
 .95 
 .91 
 .89 
 
 .95 
 
 .85 
 .82 
 .79 
 
 .75 
 .75 
 .74 
 .74 
 1.19 
 
 1.08 
 1.26 
 
 *"i."i9" 
 
 1.05 
 .98 
 
 1.16 
 
 "i'.'u 
 
 1.06 
 1.02 
 1.10 
 
 1.02 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .71 
 
 
 
 1.05 
 
 20 
 
 
 
 
 
 21 
 
 
 .60 
 
 .81 
 
 ""'.'80" 
 .80 
 .80 
 .80 
 
 .79 
 .90 
 
 1 14 
 
 22 
 
 
 23 
 
 .69 
 
 
 .80 
 .96 
 
 .89 
 .82 
 .75 
 .70. 
 
 
 24 
 
 
 25 
 
 
 .88 
 
 .82 
 .78 
 .75 
 .71 
 .81 
 
 .96 
 
 1.02 
 1.02 
 1.00 
 
 .61 
 '"'."59" 
 
 .84 
 
 .80 
 
 84 
 
 .80 
 
 1.02 
 
 .98 
 .95 
 
 1.18 
 
 26 
 
 
 
 
 27 
 
 (a) 
 (o) 
 (a) 
 (a) 
 
 
 1.20 
 
 28 
 
 1.12 
 
 29 
 
 
 
 1.12 
 
 30..... 
 
 
 
 
 
 ""i."02" 
 
 1.00 
 
 
 31 
 
 
 .50 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
234 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 8 at 2,700-foot level, near Kilo, Hawaii, for 
 
 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2.88 
 2.22 
 1.68 
 1.20 
 .84 
 
 .52 
 .48 
 .44 - 
 .36 
 .28 
 
 (a) 
 
 (a) 
 
 0.01 
 
 .05 
 
 .17 
 .44 
 .84 
 1.36 
 .24 
 
 0.05 
 .03 
 .02 
 .03 
 .05 
 
 .02 
 .02 
 .02 
 .05 
 .02 
 
 11 
 
 0.24 
 .20 
 .18 
 .17 
 .15 
 
 .15 
 
 .14 
 .12 
 .10 
 .05 
 
 0.32 
 
 .40 
 
 .48 
 .60 
 .72 
 
 .60 
 .66 
 .72 
 .78 
 .84 
 
 0.04 
 
 .01 
 
 .24 
 
 1.08 
 
 1.60 
 
 .12 
 .72 
 .60 
 .90 
 
 .28 
 
 21 
 
 0.05 
 .05 
 .05 
 .03 
 .01 
 
 (a) 
 (a) 
 (a) 
 
 00 
 
 (a) 
 
 (a) 
 
 0.90 
 .96 
 1.02 
 1.08 
 1.20 
 
 .56 
 
 .28 
 .28 
 .17 
 .05 
 
 0.12 
 
 2 
 
 12 
 
 22.. 
 
 .12 
 
 3.. 
 
 13 
 
 23.. 
 
 .05 
 
 4... 
 
 14 
 
 24... 
 
 .05 
 
 5 
 
 15 
 
 25 
 
 .28 
 
 6.. 
 
 16... 
 
 26.. 
 
 .10 
 
 7.. 
 
 17 
 
 27.. 
 
 .05 
 
 8.. 
 
 18...... 
 
 28.. 
 
 .05 
 
 9... 
 
 19 
 
 29... . 
 
 .22 
 
 10 
 
 20 
 
 30 
 
 .20 
 
 
 
 
 31 
 
 .12 
 
 
 
 
 a Channel dry. 
 
 •Daily discharge, in second-feet, at station No. 8 at 2,700-foot level, near Kilo, Hawaii, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.03 
 .03 
 .03 
 .02 
 .02 
 
 .03 
 .05 
 .05 
 .05 
 .02 
 
 .01 
 
 .01 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 1 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0.7 
 
 .8 
 .8 
 .8 
 .8 
 .8 
 
 .8 
 .8 
 .8 
 .8 
 
 0.80 
 .40 
 .05 
 .05 
 .02 
 
 .01 
 .00 
 .05 
 .05 
 .02 
 
 .05 
 .50 
 .60 
 3.35 
 .70 
 
 .10 
 .70 
 1.20 
 1.00 
 .90 
 
 .60 
 .15 
 .20 
 .20 
 .15 
 
 .10 
 .04 
 .02 
 .01 
 .05 
 1.00 
 
 0.50 
 .05 
 .01 
 .02 
 .10 
 
 .15 
 3.00 
 2.50 
 2.00 
 1.30 
 
 .85 
 .55 
 .60 
 .10 
 .55 
 
 .20 
 1.10 
 .20 
 .20 
 .15 
 
 .90 
 .70 
 .20 
 .G5 
 .45 
 
 .70 
 .70 
 .60 
 .30 
 .70 
 
 1.40 
 1.70 
 1.00 
 1.90 
 2.20 
 
 .20 
 .10 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .20 
 .15 
 
 .05 
 .01 
 .01 
 .01 
 .01 
 
 .01 
 .01 
 .01 
 .01 
 .01 
 
 .01 
 .01 
 .01 
 .01 
 .01 
 .01 
 
 0.01 
 .01 
 .01 
 .01 
 .01 
 
 .01 
 .01 
 .01 
 .01 
 .01 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .10 
 .05 
 .05 
 .05 
 
 0.20 
 1.00 
 1.50 
 1.20 
 .60 
 
 .40 
 .30 
 .20 
 .15 
 .15 
 
 2.00 
 1.00 
 
 .60 
 1.00 
 
 .15 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .45 
 .30 
 
 .20 
 .10 
 .05 
 .01 
 .01 
 .01 
 
 0.05 
 .05 
 
 1.00 
 .55 
 .15 
 
 .10 
 .20 
 .15 
 .20 
 .20 
 
 .10 
 .05 
 .25 
 .30 
 .40 
 
 .20 
 .20 
 .25 
 .40 
 .20 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .20 
 .40 
 .20 
 .10 
 .10 
 
 0.80 
 1.50 
 3.00 
 4.00 
 1.90 
 
 1.50 
 2.00 
 1.20 
 .60 
 .50 
 
 .35 
 
 .65 
 .55 
 .60 
 .45 
 
 .55 
 .30 
 .40 
 .25 
 .20 
 
 .40 
 .15 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .02 
 .02 
 1.90 
 
 0.90 
 
 .50 
 .60 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .15 
 
 .10 
 .70 
 .15 
 .15 
 .15 
 
 .05 
 2.00 
 1.10 
 2.65 
 1.50 
 
 1.50 
 2.00 
 4.00 
 1.90 
 .90 
 
 .50 
 5.00 
 2.00 
 2.20 
 1.50 
 
 .70 
 
 0.90 
 
 .20 
 3.00 
 1.50 
 2.00 
 
 .20 
 
 .40 
 
 .60 
 
 2.00 
 
 3.50 
 
 3.00 
 2.00 
 1.30 
 .40 
 .10 
 
 1.60 
 2.00 
 1.70 
 2.00 
 1.50 
 
 .95 
 .70 
 1.20 
 .90 
 .70 
 
 .50 
 .40 
 1.00 
 .80 
 .60 
 
 2.00 
 
 2 
 
 2.50 
 
 3 
 
 1.35 
 
 4 
 
 1.60 
 
 5 
 
 1.60 
 
 6 
 
 1.35 
 
 7 
 
 1.35 
 
 8 
 
 1.60 
 
 9 
 
 1.50 
 
 10 
 
 1.30 
 
 11 
 
 .85 
 
 12 
 
 .35 
 
 13 
 
 .25 
 
 14 
 
 .30 
 
 15 
 
 .65 
 
 16 
 
 1.85 
 
 17 
 
 .65 
 
 18 
 
 .70 
 
 19 
 
 .90 
 
 20 
 
 1.50 
 
 21 
 
 1.50 
 
 22 
 
 2.50 
 
 23 
 
 5.00 
 
 24 
 
 3.00 
 
 25 , 
 
 1.85 
 
 26 
 
 2.00 
 
 27 
 
 2.00 
 
 28 
 
 1.35 
 
 29 
 
 1.35. 
 
 30 
 
 .80 
 
 31 
 
 .40 
 
 
 
 Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
ISLAND OF HAW An. 235 
 
 Monthly discharge at station No. 8 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May „ 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.40 
 .52 
 .24 
 
 .01 
 .27 
 .42 
 .67 
 .30 
 
 Run-off 
 (total in 
 acre-feet). 
 
 25.00 
 31.40 
 14.90 
 
 .61 
 15.50 
 25.80 
 39.90 
 18.40 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year ... 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.63 
 .39 
 .20 
 .80 
 1.07 
 1.26 
 1.48 
 
 ,53 
 
 3.75 
 24.00 
 12.30 
 47.60 
 65.80 
 75.00 
 91.00 
 
 420. 00 
 
 Discharge measurements at station No. 9 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13. 
 Sept. 27. 
 
 Feet. 
 0.48 
 .45 
 
 Sec.-ft. 
 0.14 
 
 Nov. 21. 
 Dec. 27. 
 
 Feet. 
 0.60 
 .73 
 
 Sea^ft. 
 0.46 
 1.47 
 
 Note. — This stream is tributary to Wailuku River. 
 
 Bed of stream of sand, gravel, and small cobbles; is fairly smooth and probably only slightly shifting. 
 One channel at all stages. 
 
 Daily gage height, in feet, at station No. 9 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.42 
 
 
 0.62' 
 
 .60 
 
 0.78 
 
 
 2. 
 
 
 
 
 
 
 
 
 0.60 
 
 3 
 
 0.58 
 .55 
 
 .52 
 
 .54 
 .55 
 .58 
 .55 
 .52 
 
 .51 
 .51 
 .50 
 .50 
 
 .48 
 
 .46 
 
 "o.'ii" 
 
 .41 
 
 0.57 
 .55 
 .52 
 
 0.55 
 ,59 
 .61 
 
 .61 
 
 
 
 0.65 
 .60 
 .58 
 
 .58 
 
 "".'51' 
 .50 
 .54 
 
 
 
 .71 
 
 4 
 
 0.73 
 .50 
 
 +6." 65' 
 +'."io' 
 
 .63 
 .48 
 
 ""."49' 
 .44 
 .50 
 .50 
 
 ""6." 76" 
 
 .64 
 .70 
 .62 
 .60 
 
 ' .54 
 .62 
 .58 
 .56 
 .55 
 
 .58 
 
 .46 
 .44 
 
 .45 
 
 "".'45" 
 
 """.'5l' 
 
 .49 
 .61 
 .50 
 .52 
 
 
 
 5 
 
 .68 
 
 ""'."55' 
 .56 
 .55 
 
 """."72" 
 .68 
 .60 
 
 .62 
 
 6 
 
 .59 
 
 7... 
 
 ""."46" 
 .40 
 .38 
 
 .38 
 .35 
 .50 
 .42 
 .40 
 
 .39 
 .36 
 .31 
 .53 
 
 .88 
 
 .52 
 
 .60 
 
 8... 
 
 
 
 .70 
 
 9 
 
 .55 
 .55 
 
 .56 
 .61 
 .79 
 .90 
 .80 
 
 .70 
 .97 
 
 ""."89" 
 
 .82 
 .72 
 .81 
 
 
 
 
 .61 
 
 10 
 
 .69 
 
 .67 
 .62 
 
 ""."58" 
 
 .64 
 
 .54 
 
 """."56' 
 .59 
 .59 
 
 .69 
 .65 
 .59 
 
 
 
 .58 
 
 11 
 
 
 
 .54 
 
 12 
 
 
 
 
 .44 
 .49 
 
 .52 
 
 13 
 
 .45 
 
 .30 
 
 .54 
 
 .52 
 
 14 
 
 .54 
 
 15 
 
 
 .23 
 
 .54 
 
 .52 
 .48 
 
 .56 
 
 16 
 
 
 .65 
 
 .58 
 
 17 
 
 .40 
 
 .40. 
 
 
 .45 
 
 18 
 
 
 
 .48 
 
 .55 
 
 .54 
 .52 
 
 .51 
 .50 
 
 .48 
 .48 
 
 .45 
 .45 
 .45 
 .44 
 .69 
 
 .54 
 .59 
 
 """72" 
 ,65 
 
 .59 
 
 .71 
 ""69" 
 
 .61 
 
 .58 
 .60 
 
 .40 
 
 19 
 
 .42 
 .41 
 
 .40 
 .40 
 .40 
 .40 
 
 .38 
 
 
 
 .42 
 
 20 
 
 
 
 
 
 21 
 
 
 .38 
 
 .45 
 
 ""."44' 
 .48 
 .45 
 .42 
 
 .41 
 .52 
 
 .60) 
 
 22 
 
 
 23 
 
 .30 
 
 
 .45 
 .58 
 
 .42 
 .35 
 .22 
 .20 
 
 
 24 
 
 
 25 
 
 
 .70 
 
 .57 
 .49 
 .46 
 .45 
 .52 
 
 .60 
 
 .67 
 .63 
 .62 
 
 .23 
 ""."26" 
 
 .52 
 
 .50 
 .54 
 .49 
 
 .58 
 
 .58 
 .54 
 
 .68 
 
 26 
 
 
 
 
 27 
 
 .41 
 
 .40 
 .40 
 .39 
 
 
 72 
 
 28 
 
 .61 
 
 29 
 
 
 
 .61 
 
 30 
 
 
 
 
 '"."68" 
 
 .58 
 
 
 31 
 
 
 .10 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
236 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily discharge, in second-feet, *at station No. 9 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1911. 
 
 Day. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 3.60 
 
 0.15 
 
 0.32 
 
 3.08 
 
 ,15 
 
 .18 
 
 2.56 
 
 .15 
 
 .15 
 
 2.06 
 
 .32 
 
 .18 
 
 1.58 
 
 .50 
 
 .29 
 
 1.04 
 
 .56 
 
 .18 
 
 .98 
 
 .62 
 
 .15 
 
 .86 
 
 .68 
 
 .18 
 
 .74 
 
 .74 
 
 .36 
 
 .62 
 
 .56 
 
 .29 
 
 Date. 
 
 11 
 12 
 13 
 
 14 
 15 
 
 16 
 17 
 
 IS 
 19 
 20 
 
 Oct. 
 
 0.62 
 .62 
 .56 
 .56 
 .56 
 
 .50 
 .50 
 .50 
 .43 
 .39 
 
 Nov. 
 
 Dec. 
 
 0.32 
 
 .29 
 
 .80 
 
 1.10 
 
 2.56 
 
 3.86 
 4.38 
 3.34 
 2.30 
 1.34 
 
 Day. 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 
 27 
 28 
 29 
 30 
 31 
 
 Oct. 
 
 0.36 
 .32 
 .29 
 .29 
 .26 
 
 .18 
 .18 
 .15 
 .15 
 .15 
 .15 
 
 Nov. 
 
 1.10 
 1.34 
 1.46 
 1.58 
 1.70 
 
 .56 
 .56 
 .50 
 .43 
 
 Dec. 
 
 0.56 
 
 .32 
 2.56 
 
 1.70 
 .43 
 .36 
 .74 
 .62 
 .50 
 
 Daily discharge, in second-feet, at station No. 9 at 
 
 1912. 
 
 ,1 00-foot level, near Hilo, Hawaii, for 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 2. 
 3. 
 4. 
 J5. 
 
 6. 
 
 7. 
 
 8. 
 
 9. 
 
 10. 
 
 11. 
 
 12. 
 13. 
 14. 
 15 
 
 16, 
 
 17. 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 0.40 
 .40 
 .45 
 .30 
 .20 
 
 .30 
 .30 
 .45 
 .30 
 
 .20 
 
 .20 
 .20 
 .15 
 .15 
 .15 
 
 .10 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .15 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .25 
 3.30 
 
 3.50 
 
 4.00 
 5.00 
 4.50 
 4.00 
 
 3.00 
 
 2.00 
 
 1.00 
 
 .80 
 
 0.50 
 .50 
 .40 
 .30 
 .20 
 
 .20 
 .20 
 .30 
 .30 
 
 .30 
 
 .35 
 
 .55 
 
 2.20 
 
 3.60 
 
 2.30 
 
 1.10 
 4.50 
 4.10 
 3.80 
 3.45 
 
 2.55 
 1.35 
 2.45 
 1.80 
 1.10 
 
 .40 
 .15 
 .10 
 .10 
 .20 
 3.00 
 
 1.00 
 .50 
 .30 
 .45 
 
 .55 
 
 .55 
 .50 
 .40 
 .20 
 1.05 
 
 .90 
 .60 
 .50 
 .45 
 .75 
 
 .30 
 .30 
 .35 
 .45 
 .45 
 
 1.05 
 .80 
 .45 
 .50 
 .50 
 
 .90 
 .70 
 .60 
 .50 
 .60 
 
 0.70 
 .80 
 1.00 
 1.45 
 2.00 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 
 .05 
 
 .20 
 
 .15 
 .30 
 .15 
 
 0.10 
 .20 
 .80 
 .50 
 .45 
 
 .45 
 .30 
 .20 
 .15 
 .30 
 
 .30 
 .30 
 .30 
 .30 
 .30 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .15 
 .15 
 .15 
 .45 
 .30 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .10 
 
 1.00 
 .70 
 .15 
 
 .15 
 .15 
 .10 
 .15 
 .15 
 
 .10 
 .10 
 .15 
 .20 
 .20 
 
 .15 
 .15 
 .15 
 .15 
 .10 
 
 .10 
 .10 
 .15 
 .10 
 .10 
 
 .05 
 .20 
 .15 
 .10 
 .10 
 .20 
 
 1.80 
 2.00 
 2.50 
 3.00 
 1.10 
 
 .75 
 1.10 
 .60 
 .50 
 .40 
 
 .30 
 .60 
 .45 
 .35 
 .30 
 
 .45 
 .40 
 .30 
 .30 
 .20 
 
 .20 
 .15 
 .15 
 .15 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 1.05 
 
 0.60 
 .50 
 .30 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .20 
 .20 
 
 .15 
 .55 
 .15 
 .20 
 .20 
 
 .10 
 .40 
 .30 
 .45 
 .50 
 
 .50 
 1.00 
 3.80 
 1.35 
 
 .45 
 5.00 
 3.00 
 3.00 
 2.00 
 1.00 
 
 2.05 
 2.50 
 3.00 
 2.00 
 1.00 
 
 .60 
 .30 
 .35 
 .30 
 3.00 
 
 2.50 
 
 1.35 
 
 1.00 
 
 .50 
 
 .60 
 
 .80 
 1.00 
 1.30 
 1.20 
 1.05 
 
 .55 
 .45 
 .50 
 .50 
 .45 
 
 .45 
 .30 
 .60 
 .50 
 .45 
 
 1.50 
 2 50 
 
 .50 
 1.30 
 
 .60 
 
 .45 
 .50 
 1.10 
 .55 
 .45 
 
 .20 
 .20 
 .30 
 .30 
 
 .45 
 .10 
 .05 
 .05 
 1.00 
 
 .50 
 1.50 
 3.00 
 2.00 
 1.00 
 
 2.00 
 1.35 
 .55 
 .55 
 .40 
 .30 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 9 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.80 
 .71 
 1.01 
 
 .16 
 
 1.12 
 
 1.37 
 
 .57 
 
 .26 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 49.50 
 42.40 
 62.30 
 
 9.84 
 64.40 
 84.20 
 33.90 
 16.00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.05 
 .24 
 .18 
 .65 
 
 .85 
 1.04 
 .82 
 
 2.98 
 14.80 
 11.10 
 38.70 
 52.30 
 61.90 
 50.40 
 
 441. 00 
 
ISLAND OF HAWAII. 237 
 
 Discharge measurements at station No. 10 at 2,700-foot level, near Hilo, Hawaii, in 1912, 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13 
 
 Sept. 27 
 
 E. 0. Christiansen. 
 do 
 
 Feet. 
 0.73 
 
 .70 
 
 Sec.-ft. 
 
 Nov. 21 
 Dec. 27 
 
 E. 0. Christiansen. 
 do 
 
 Feet. 
 0.98 
 1.01 
 
 Sec.-ft. 
 17 
 
 
 59 
 
 
 
 Note.— Bed of stream of gravel and small cobbles, shifting. One channel at all stages. 
 This stream is tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 10 at 2, 700 foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.80 
 
 
 0.82 
 .80 
 
 0.98 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.86 
 
 (a) 
 
 (a) 
 
 .88 
 .89 
 .91 
 .90 
 .86 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 "(a)"' 
 (a) 
 
 («) 
 
 (a) 
 (a) 
 
 0.75 
 
 .82 
 .85 
 
 .90 
 
 
 
 0.88 
 .81 
 .80 
 
 .80 
 
 ""."so! 
 
 .80 
 
 .80 
 
 
 
 
 0.98 
 
 4 
 
 1.09 
 
 .85 
 
 "(«)" 
 
 "(«)"' 
 
 .89 
 .80 
 
 """."86" 
 
 .81 
 
 .85 
 .82 
 
 "i."66" 
 
 .96 
 1.00 
 .90 
 .89 
 
 .85 
 .88 
 .81 
 .82 
 .80 
 
 .80 
 
 .75 
 
 .72 
 
 .71 
 
 ""In 
 
 ""to" 
 
 .70 
 
 .85 
 .72 
 .74 
 
 ""."95" 
 
 ""."82" 
 
 .84 
 .99 
 
 "i."62" 
 
 .92 
 
 .85 
 
 1.01 
 
 5 
 
 .91 
 
 6 
 
 .89 
 
 7 
 
 
 
 .88 
 
 8 
 
 (a) 
 (a) 
 (a) 
 
 fa) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 0.92 
 
 
 
 
 .98 
 
 9 
 
 
 
 
 
 .92 
 
 10 
 
 ""6." 85' 
 .91 
 .82 
 
 .75 
 1.09 
 
 "i.'io' 
 
 .97 
 (a) 
 .86 
 
 .99 
 
 .93 
 
 .89 
 
 ""."so" 
 
 .86 
 .74 
 
 ""si" 
 
 .88 
 .82 
 
 1.04 
 .90 
 
 .85 
 
 
 
 .88 
 
 11 
 
 
 
 .82 
 
 12 
 
 
 
 
 .72 
 .72 
 
 .78 
 
 13..... 
 
 .78 
 
 0.61 
 
 .80 
 
 .74 
 
 14 
 
 .75 
 
 15 
 
 
 .60 
 
 .80 
 
 .70 
 .70 
 
 .81 
 
 16 
 
 
 .90 
 
 .85 
 
 17 . 
 
 .70 
 
 (o) 
 
 
 .72 
 
 18 
 
 
 
 .81 
 
 .79 
 .76 
 
 .75 
 
 .80 
 .80 
 .78 
 .75 
 
 .71 
 .69 
 .69 
 .68 
 .90 
 
 .87 
 .82 
 
 ""."99" 
 
 .94 
 
 .88 
 
 .90 
 
 ""."95" 
 
 .94 
 .89 
 .90 
 
 .72 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .66 
 
 
 
 .75 
 
 20 
 
 
 
 
 
 21 
 
 
 (a) 
 
 .80 
 
 ""."TO" 
 
 .70 
 
 .75 
 .71 
 
 .71 
 
 .84 
 
 .88 
 
 22 
 
 
 23 
 
 («) 
 
 
 .80 
 
 .82 
 
 .80 
 .80 
 .80 
 .80 
 
 
 24 
 
 
 25 
 
 
 .80 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 .92 
 
 .91 
 
 .91 
 
 .88 
 .82 
 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 .95 
 
 .85 
 
 .74 
 
 .95 
 
 26 
 
 
 
 
 27 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 
 1.00 
 .90 
 
 29 
 
 
 
 .88 
 
 
 
 
 
 ""9i' 
 
 .94 
 
 
 31 
 
 
 (a) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 10 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.72 
 .60 
 .48 
 .36 
 .30 
 
 .24 
 .24 
 .22 
 .20 
 .20 
 
 (a) 
 
 (°) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 0.05 
 
 (a) 
 
 (a) 
 
 (a) 
 .05 
 .05 
 .05 
 
 2 
 
 3 
 
 4 
 
 5 
 
 6..... 
 
 7 
 
 8 
 
 9 
 
 10 
 
 
 Day. 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 Oct. 
 
 Nov 
 
 Dec. 
 
 0.12 
 
 (a) 
 
 0.05 
 
 .11 
 
 (a) 
 
 .05 
 
 .10 
 
 (a) 
 
 .24 
 
 .05 
 
 .05 
 
 .28 
 
 .05 
 
 .05 
 
 .88 
 
 .05 
 
 .05 
 
 1.95 
 
 .05 
 
 .05 
 
 1.60 
 
 8 
 
 .10 
 
 1.60 
 
 .11 
 
 .44 
 
 (a) 
 
 .14 
 
 .12 
 
 Day. 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Oct. 
 
 Nov. 
 
 0.17 
 .20 
 .28 
 .32 
 .36 
 
 .20 
 .14 
 .12 
 .05 
 .05 
 
 Dec. 
 
 0.05 
 .05 
 .05 
 
 («) 
 .44 
 
 .17 
 .05 
 .05 
 .36 
 .32 
 .30 
 
 a Channel dry. 
 
238 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 10 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.15 
 .15 
 .15 
 
 (a) 
 (a) 
 
 .15 
 
 .20 
 .20 
 .20 
 .15 
 
 (<0 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 ( a ) 
 (») 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 $ 
 
 0.20 
 
 1.00 
 2.00 
 2.20 
 2.00 
 1.00 
 
 .50 
 .30 
 .10 
 .10 
 
 0.10 
 .10 
 («*) 
 («0 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 .10 
 .20 
 .10 
 
 .10 
 
 .75 
 .80 
 .80 
 .80 
 
 .35 
 (a) 
 .15 
 .10 
 .05 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 .20 
 1.50 
 
 0.50 
 .30 
 .10 
 .10 
 .10 
 
 .20 
 .80 
 .60 
 .40 
 .40 
 
 .25 
 .20 
 .10 
 .05 
 .15 
 
 .10 
 .10 
 .05 
 .15 
 .10 
 
 .55 
 .20 
 .10 
 .15 
 .20 
 
 .20 
 .15 
 .10 
 .10 
 .10 
 
 
 
 
 0.05 
 
 0.40 
 .50 
 1.00 
 1.50 
 .40 
 
 .30 
 .40 
 .20 
 .20 
 
 .10 
 .15 
 .05 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .20 
 
 0.10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .40 
 .15 
 .10 
 .30 
 
 .30 
 .30 
 2.00 
 .40 
 .30 
 
 .15 
 2.00 
 1.80 
 1.50 
 .60 
 .20 
 
 0.35 
 
 .40 
 .60 
 .50 
 .30 
 
 .20 
 .10 
 .10 
 .40 
 1.40 
 
 .50 
 .50 
 .25 
 .10 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .30 
 
 .30 
 .20 
 .20 
 .20 
 .30 
 
 .10 
 .10 
 .10 
 .20 
 .35 
 
 0.40 
 
 2 
 
 
 
 
 .60 
 
 3 
 
 
 
 0.15 
 .05 
 .05 
 
 .05 
 
 "".'26' 
 .05 
 
 ""."is" 
 
 .05 
 .10 
 .10 
 
 .35 
 
 4 
 
 0.75 
 
 
 .45 
 
 5. 
 
 20 
 
 6 
 
 .10 
 
 
 .20 
 
 7 
 
 .15 
 
 8 
 
 
 
 .05 
 .05 
 .05 
 
 .35 
 
 9 
 
 
 
 .25 
 
 10 
 
 
 
 .15 
 
 11 
 
 
 
 .10 
 
 12 
 
 
 
 
 
 .10 
 
 13 
 
 
 
 .05 
 
 
 .10 
 
 14 
 
 
 
 .05 
 
 15 
 
 
 
 .05 
 
 
 .05 
 
 16 
 
 
 
 .10 
 
 17 
 
 
 
 
 
 .10 
 
 18 
 
 
 
 
 .05 
 
 .10 
 
 19 
 
 
 
 
 .10 
 
 20 
 
 
 
 
 
 .20 
 
 21 
 
 
 
 .05 
 
 
 .15 
 
 22 
 
 
 
 .60 
 
 23 
 
 
 
 .05 
 .10 
 
 
 .90 
 
 24 
 
 
 
 .50 
 
 25 
 
 
 
 .30 
 
 26 
 
 
 
 .05 
 .05 
 .05 
 .05 
 
 ""."io" 
 
 .50 
 
 27 
 
 
 
 .40 
 
 28 
 
 
 
 .20 
 
 29 
 
 
 
 .15 
 
 30 
 
 
 
 .10 
 
 31 
 
 
 
 
 
 .10 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from poorly denned rating curve. Discharge for days for which gage 
 heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 
 station No. 50. 
 
 Monthly discharge at station No. 10 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.13 
 .08 
 .30 
 
 .04 
 .32 
 .20 
 .22 
 .10 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 8.10 
 4.83 
 18.00 
 
 2.46 
 18.40 
 12.30 
 13.10 
 .6.15 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.00 
 .05 
 .07 
 .21 
 .38 
 .30 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 0.00 
 3.07 
 4.30 
 12.50 
 23.40 
 17.90 
 16.00 
 
 130. 00 
 
ISLAND OF HAWAII. 
 
 239 
 
 Discharge measurements at station No. 11 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrograp her.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13. 
 Sept. 27. 
 Nov. 21 . 
 Dec. 27.. 
 
 Feet. 
 
 0.36 
 .54 
 
 Sec.-ft. 
 
 00 
 
 (a) 
 0.04 
 1.15 
 
 a Channel dry. 
 
 Note.— Composed of silt, sand, and gravel, is shifting. One channel at all stages. This stream is 
 tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 11 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsorf, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 00 
 
 
 0.40 
 .22 
 
 0.50 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.36 
 
 "(a)" 
 
 (a) 
 
 0.22 
 
 00 
 
 00 
 
 0.30 
 .31 
 .32 
 
 .34 
 
 
 
 0.39 
 
 .28 
 .19 
 
 .08 
 
 "(a)" 
 00 
 
 00 
 
 
 
 
 0.44 
 
 4 
 
 0.72 
 .65 
 
 "OO" 
 
 ■■(a)" 
 
 0.39 
 
 00 
 
 "".'28' 
 
 .19 
 .39 
 .35 
 
 00 
 
 00 
 00 
 
 00 
 
 00 
 
 ' '6*59" 
 
 .50 
 .59 
 .42 
 .38 
 
 .30 
 .37 
 .30 
 .35 
 
 00 
 00 
 
 00 
 00 
 
 00 
 
 '"(«)■• 
 
 "(a)"" 
 
 00 
 00 
 00 
 00 
 
 ""."56" 
 
 ""."28" 
 .31 
 .61 
 
 '"."59" 
 .60 
 .30 
 
 .52 
 
 5 
 
 
 .40 
 
 6 
 
 .36 
 .36 
 .40 
 .40. 
 .35 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 .30 
 
 7 
 
 (a) 
 (a) 
 
 00 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 00 
 00 
 00 
 
 0.51 
 
 00 
 
 .35 
 
 8 
 
 
 
 .50 
 
 9 
 
 0.31 
 .31 
 
 (a) 
 0.29 
 .39 
 .45 
 .31 
 
 .30 
 .71 
 
 "".'29' 
 .31 
 
 00 
 
 .38 
 
 
 
 
 .40 
 
 10 
 
 .59 
 
 .50 
 .39 
 
 '"."34" 
 .40 
 
 .29 
 
 "*.'32" 
 .40 
 .37 
 
 .45 
 .44 
 .40 
 
 
 
 .30 
 
 11 
 
 
 
 .21 
 
 12 
 
 
 
 
 .21 
 
 13 
 
 .14 
 
 0.15 
 
 .29 
 
 .18 
 
 14.. 
 
 .20 
 
 15 
 
 
 (0) 
 
 00 
 
 .25 
 
 16 
 
 
 .60 
 
 00 
 
 17 
 
 (a) 
 
 (a) 
 
 
 00 
 
 18 
 
 
 
 .34 
 
 .00 
 
 00 
 
 (a) 
 
 00 
 
 00 
 
 00 
 00 
 
 00 
 00 
 
 (a) 
 (a) 
 .49 
 
 .31 
 
 .28 
 
 ""."59' 
 
 .42 
 .40 
 
 .50 
 
 "\"45* 
 
 .38 
 .31 
 .40 
 
 00 
 
 .21 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 
 .03 
 
 
 
 20 
 
 
 
 
 
 21 
 
 
 00 
 
 00 
 
 "la)" 
 
 00 
 00 
 
 (a) 
 
 00 
 
 .15 
 
 .35 
 
 22 
 
 
 23 
 
 (a) 
 
 
 00 
 
 .30 
 
 00 
 
 00 
 
 00 
 
 00 
 
 
 24 
 
 
 25 
 
 
 .30 
 
 .24 
 .21 
 00 
 
 00 
 
 .36 
 
 .43 
 
 .46 
 .45 
 .41 
 
 00 
 "{a)" 
 
 00 
 
 (a) 
 00 
 
 00 
 
 .30 
 
 .26 
 .25 
 
 .48 
 
 26 
 
 
 
 
 27 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 
 .53 
 
 28 
 
 .40 
 
 29 
 
 
 
 .39 
 
 30 
 
 
 
 
 '".'35' 
 
 .40 
 
 
 
 
 00 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 11 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.55 
 .65 
 .75 
 .85 
 
 1.00 
 
 1.10 
 1.00 
 
 .85 
 .75 
 .65 
 
 00 
 
 00 
 
 0.01 
 
 .02 
 
 .05 
 
 .05 
 .10 
 .10 
 .15 
 .05 
 
 0.05 
 
 00 
 
 00 
 
 00 
 
 .15 
 
 00 
 
 {a) 
 
 .15 
 .30 
 .20 
 
 11.. 
 
 0.30 
 
 .30 
 .25 
 .20 
 .15 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 0.10 
 .20 
 .35 
 .55 
 
 1.00 
 
 .75 
 
 .85 
 
 1.00 
 
 1.10 
 
 1.20 
 
 0.30 
 
 .30 
 
 .75 
 
 1.40 
 
 2.30 
 
 .20 
 1.20 
 1.40 
 1.60 
 
 .55 
 
 21.. . 
 
 0.05 
 
 .05 
 .05 
 .03 
 .02 
 
 00 
 OO 
 
 (a) 
 (a) 
 
 00 
 
 00 
 
 1.30 
 1.40 
 1.50 
 1.60 
 1.60 
 
 .55 
 .45 
 .45 
 .35 
 .15 
 
 0.55 
 
 2 
 
 12.. 
 
 22.. 
 
 .30 
 
 3 
 
 13. 
 
 23 . 
 
 .20 
 
 4. 
 
 14.. 
 
 24. 
 
 OO 
 1.10 
 
 5 
 
 15.. 
 
 25 . 
 
 6 
 
 16 
 
 26 
 
 .45 
 
 7 
 
 17 
 
 27.. .. 
 
 .30 
 
 8 
 
 18 
 
 28.. 
 
 .30 
 
 9 
 
 19.. 
 
 29 
 
 .55 
 
 10 
 
 20 
 
 30 
 
 .45 
 
 
 
 31 
 
 .30 
 
 
 
 
 a Channel dry. 
 
240 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 11 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 
 25 
 
 26 
 
 27 
 28 
 29 
 30 
 31 
 
 Jan. 
 
 0.1 
 
 1 
 1 
 
 Feb. 
 
 Mar. 
 
 0.5 
 .5 
 .1 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 .1 
 .1 
 
 (a) 
 .1 
 .2 
 .5 
 .1 
 
 .1 
 
 3.8 
 
 4.0 
 
 4.0 
 
 .5 
 
 .5 
 (a) 
 .2 
 .1 
 .1 
 
 .1 
 .1 
 
 (a) 
 
 (a) 
 
 .1 
 2.0 
 
 Apr. 
 
 0.5 
 .2 
 .1 
 .1 
 .1 
 
 .1 
 3.0 
 2.5 
 2.5 
 1.9 
 
 .2 
 .2 
 .1 
 
 .2 
 
 .1 
 
 1.0 
 .1 
 .2 
 .1 
 
 .5 
 .4 
 
 .2 
 .5 
 
 .4 
 
 May. 
 
 0.8 
 1.2 
 1.0 
 4.0 
 5.0 
 
 .5 
 .1 
 .1 
 .1 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (o) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 fa) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 June. 
 
 (a) 
 (a) 
 (a) 
 
 (°) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 («) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 July. 
 
 0.1 
 .1 
 .2 
 .1 
 .1 
 
 (a) 
 (a) 
 
 $ 
 
 (a) 
 
 .5 
 (a) 
 .1 
 .2 
 
 (a) 
 
 (a) 
 .2 
 .1 
 .1 
 .1 
 
 (o) 
 .1 
 
 (a) 
 .2 
 .1 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 .1 
 .1 
 
 Aug. 
 
 (a) 
 (a) 
 1.0 
 .2 
 («) 
 
 (a) 
 .1 
 .1 
 .2 
 .1 
 
 (a) 
 
 (a) 
 (a) 
 
 00 
 
 («) 
 
 .1 
 
 .2 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (o) 
 (a) 
 
 (a) 
 
 Sept. 
 
 Oct. 
 
 0.2 
 .1 
 .1 
 (a) 
 
 («) 
 
 (a) 
 (a) 
 
 («). 
 (a) 
 
 (•) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 4.0 
 
 1.9 
 
 .3 
 
 .2 
 6.0 
 2.0 
 2.0 
 1.0 
 
 .1 
 
 Nov. 
 
 0.8 
 
 .2 
 
 2.0 
 
 .1 
 
 .1 
 
 .1 
 
 2.2 
 
 5.0 
 
 4.0 
 
 1.9 
 
 2.0 
 
 .4 
 
 .1 
 
 2.0 
 
 3.0 
 .8 
 
 1.5 
 .5 
 
 .2 
 .2 
 .2 
 .2 
 .1 
 
 .1 
 .1 
 1.0 
 .6 
 .2 
 
 Dec. 
 
 1.0 
 2.0 
 
 .4 
 1.0 
 
 .2 
 
 .2 
 .1 
 .8 
 .2 
 .2 
 
 (a) 
 (a) 
 (a) 
 
 2 
 .1 
 
 .1 
 1.0 
 
 4.0 
 1.5 
 
 .7 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 11 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May _ 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.32 
 .57 
 .50 
 
 .03 
 .50 
 .57 
 .61 
 .50 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 19.80 
 13.90 
 30.50 
 
 1.84 
 28.80 
 35.00 
 36.30 
 30.70 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.00 
 
 .37 
 
 .67 
 
 1.04 
 
 .57 
 
 42 
 
 Run-off 
 (total in 
 acre-feet), 
 
 0.00 
 4.92 
 4.92 
 22.00 
 41.20 
 61.90 
 35.00 
 
 303. 00 
 
ISLAND OF HAWAII. 
 
 241 
 
 Discharge measurements at station No. 12 at 2,700-foot level, near Kilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 
 Feet. 
 0.89 
 
 .84 
 
 Sec.-ft. 
 1.58 
 
 .78 
 
 Nov. 27.. 
 Dec. 27.. 
 
 
 Feet. 
 ■ 1.14 
 1.53 
 
 Sec.-ft. 
 4 99 
 
 Sept 27 
 
 
 23.3 
 
 
 
 
 This stream is tributary to "Wailuku River. 
 
 Note. — Bed of stream of gravel and small cobbles, is fairly smooth and regular, and probably perma- 
 nent. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 12 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.82 
 
 
 1.35 
 1.22 
 
 1.50 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 1.02 
 
 1.01 
 
 .98 
 
 1.02 
 1.02 
 1.05 
 1.00 
 .98 
 
 .95 
 .92 
 .90 
 .89 
 
 .85 
 
 .82 
 
 "6." 65' 
 .65 
 
 1.05 
 1.01 
 .98 
 
 1.16 
 1.22 
 1.29 
 
 1.31 
 
 
 
 1.39 
 1.24 
 1.20 
 
 1.12 
 
 "i.'os" 
 
 1.05 
 1.00 
 
 
 
 
 1.40 
 
 4 
 
 1.55 
 1.39 
 
 "6.'40" 
 ""*."36" 
 
 1.33 
 
 """."94" 
 .91 
 1.02 
 1.02 
 
 "i.*55" 
 
 1.42 
 1.52 
 1.32 
 1.26 
 
 1.19 
 1.31 
 1.19 
 1.04 
 .99 
 
 1.11 
 
 1.09 
 .96 
 
 .72 
 
 '".*82" 
 
 ""."87" 
 
 .90 
 
 1.16 
 
 .98 
 
 .95 
 
 "i."44" 
 
 "i.'rg" 
 
 1.21 
 1.38 
 
 "i."5i" 
 
 1.32 
 1.22 
 
 1.54 
 
 5 
 
 1.32 
 
 6 
 
 1.28 
 
 7 
 
 "".'62" 
 .62 
 .61 
 
 .61 
 .60 
 .80 
 .76 
 .70 
 
 .69 
 .68 
 .65 
 .71 
 1.29 
 
 .95 
 
 1.28 
 
 8 
 
 
 
 1.44 
 
 9 
 
 .96 
 
 .98 
 
 .98 
 1.34 
 1.48 
 1.49 
 1.33 
 
 1.02 
 1.21 
 
 "i."24" 
 
 1.19 
 1.08 
 1.08 
 
 
 
 
 1.26 
 
 10 
 
 1.59 
 
 1.49 
 1.32 
 
 "i."i9" 
 
 1.20 
 1.16 
 
 "i.'ri" 
 
 1.19 
 1.16 
 
 L39 
 1.22 
 
 
 
 1.20 
 
 11 
 
 
 
 1.14 
 
 12 
 
 
 
 
 .84 
 
 .89 
 
 1.10 
 
 13 
 
 1.01 
 
 .71 
 
 1.14 
 
 1.05 
 
 14 
 
 1.06 
 
 15 
 
 
 .67 
 
 1.04 
 
 1.05 
 .91 
 
 1.21 
 
 16 
 
 
 1.39 
 
 1.24 
 
 17 
 
 .90 
 
 .91 
 
 
 1.05 
 
 18 
 
 
 
 .92 
 
 1.05 
 1.02 
 1.00 
 
 1.02 
 
 1.09 
 
 .95 
 
 .89 
 
 .85 
 .84 
 .82 
 .82 
 1.41 
 
 1.07 
 1.14 
 
 "if 62" 
 1.34 
 
 1.25 
 
 1.46 
 
 "L'44" 
 
 1.28 
 1.28 
 1.32 
 
 1.01 
 
 19 
 
 .80 
 .79 
 
 .76 
 .75 
 .74 
 
 .72 
 
 .93 
 
 
 
 1.12 
 
 20 
 
 
 
 
 
 21 
 
 
 .80 
 
 .85 
 
 "".'81' 
 .81 
 
 .81 
 .80 
 
 .79 
 1.00 
 
 1.21 
 
 22 
 
 
 23 
 
 .79 
 
 
 .75 
 1.09 
 
 1.08 
 .92 
 .90 
 
 .88 
 
 
 24 
 
 
 25 
 
 
 1.04 
 
 1.05 
 
 1.01 
 
 .99 
 
 .94 
 
 1.02 
 
 1.32 
 
 1.34 
 1.32 
 1.30 
 
 .70 
 "'.*65' 
 
 1.24 
 
 1.00 
 
 1.08 
 
 .99 
 
 1.25 
 
 1.14 
 1.12 
 
 1.45 
 
 26 
 
 
 
 
 27 
 
 .75 
 .72 
 .71 
 .70 
 
 
 1.52 
 
 28 
 
 1.35 
 
 29 
 
 
 
 1.28 
 
 30. 
 
 
 
 
 "i."32" 
 
 1.24 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 12 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Deo. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 53.0 
 44.1 
 36.0 
 28.0 
 21.0 
 
 15.0 
 14.0 
 12.5 
 11.0 
 10.0 
 
 1.1 
 1.1 
 1.1 
 2.0 
 4.2 
 
 5.6 
 7.3 
 9.3 
 12.0 
 10.0 
 
 3.4 
 2.5 
 2.3 
 2.5 
 
 2.8 
 
 2.0 
 1.7 
 1.9 
 2.3 
 1.7 
 
 11 '.. 
 
 7.3 
 6.6 
 6.4 
 5.3 
 5.9 
 
 5.6 
 5.4 
 4.2 
 3.9 
 3.4 
 
 11.0 
 12.0 
 13.0 
 14.5 
 16.2 
 
 14.0 
 15.0 
 16.2 
 17.4 
 18.6 
 
 2.3 
 
 2.0 
 
 11.0 
 
 15.6 
 
 36.0 
 
 97.0 
 
 127.0 
 133.0 
 137.0 
 93.0 
 
 21.. 
 
 2.8 
 2.5 
 2.3 
 2.1 
 1.9 
 
 1.6 
 1.5 
 1.3 
 1.2 
 1.1 
 1.1 
 
 19.8 
 21.7 
 23.8 
 25.9 
 28.8 
 
 14.0 
 7.3 
 
 8.0 
 5.4 
 4.0 
 
 37.8 
 
 2 
 
 12 
 
 22 
 
 18.0 
 
 3 
 
 13 * 
 
 23 
 
 12.5 
 
 4 
 
 14 
 
 24 
 
 10.0 
 
 5 
 
 15 
 
 25 
 
 40.5 
 
 6 
 
 16 
 
 26 
 
 22.4 
 
 7 
 
 17 
 
 27 
 
 18.0 
 
 8 
 
 18 
 
 28 
 
 17.4 
 
 9 
 
 19 
 
 29 
 
 37.8 
 
 10 
 
 20 
 
 30 
 
 36.9 
 
 
 
 31 
 
 36.0 
 
 
 
 
 14694°— wsp 336—14 16 
 
242 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 12 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 
 7, 
 8, 
 9. 
 10 
 
 11. 
 
 12. 
 13. 
 14. 
 15. 
 
 16. 
 17. 
 18. 
 19. 
 20. 
 
 21. 
 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 2.80 
 2.80 
 2.80 
 2.70 
 2.30 
 
 2.80 
 2.80 
 3.40 
 2.50 
 2.30 
 
 2.00 
 1.70 
 1.50 
 1.40 
 1.10 
 
 .90 
 .80 
 .80 
 .70 
 .70 
 
 .50 
 .50 
 .50 
 .40 
 .40 
 
 .50 
 .50 
 .40 
 .30 
 .30 
 .30 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .70 
 .50 
 .30 
 
 .30 
 .30 
 .20 
 .30 
 9.70 
 
 20.00 
 30.00 
 36.00 
 28.00 
 20.00 
 
 10.00 
 6.00 
 4.00 
 4.00 
 
 3.80 
 3.60 
 3.40 
 2.70 
 2.30 
 
 2.20 
 2.00 
 2.00 
 2.10 
 2.30 
 
 2.30 
 12.00 
 19.80 
 20.40 
 11.50 
 
 2.80 
 6.90 
 7.20 
 7.70 
 8.00 
 
 6.40 
 3.90 
 3.90 
 3.50 
 3.20 
 
 3.40 
 2.70 
 2.40 
 1.90 
 2.80 
 15.00 
 
 9.00 
 6.00 
 5.60 
 7.30 
 9.70 
 
 10.50 
 34.00 
 33.00 
 32.00 
 27.30 
 
 20.40 
 11.00 
 9.00 
 6.40 
 6.60 
 
 5.60 
 5.80 
 5.90 
 6.40 
 5.60 
 
 14.50 
 14.50 
 7.30 
 9.00 
 11.00 
 
 12.00 
 
 ■11. 00 
 
 10.00 
 
 6.00 
 
 7.00 
 
 16.00 
 17.00 
 15.00 
 24.50 
 30.00 
 
 14.50 
 10.00 
 5.00 
 3.00 
 3.00 
 
 3.00 
 3.00 
 2.70 
 2.40 
 2.10 
 
 1.80 
 1.50 
 1.60 
 1.80 
 1.50 
 
 1.30 
 1.00 
 .70 
 .70 
 .70 
 
 .50 
 .20 
 .20 
 .20 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .20 
 .30 
 .30 
 .20 
 
 .90 
 1.60 
 1.40 
 1.10 
 
 .90 
 
 .70 
 2.00 
 4.00 
 6.00 
 8.00 
 
 2.50 
 3.90 
 2.40 
 2.00 
 2.00 
 
 2.00 
 3.00 
 14.50 
 8.00 
 6.60 
 
 4.70 
 4.30 
 3.90 
 3.40 
 2.50 
 
 20.00 
 15.00 
 5.20 
 4 20 
 3.20 
 
 2.80 
 2.40 
 2.00 
 1.70 
 1.40 
 
 1.10 
 
 .80 
 
 .50 
 
 4.00 
 
 4.00 
 
 3.90 
 1.70 
 1.50 
 1.30 
 1.00 
 1.00 
 
 0.90 
 
 1.00 
 
 18.00 
 
 11.50 
 
 5.00 
 
 3.00 
 1.90 
 1.60 
 2.80 
 2.80 
 
 1.90 
 1.00 
 1.40 
 2.40 
 3.40 
 
 1.60 
 1.60 
 1.70 
 2.00 
 1.50 
 
 1.10 
 
 .70 
 
 .70 
 2.50 
 2.00 
 1.50 
 1.00 
 2.00 
 
 18.00 
 20.00 
 26.00 
 32.00 
 24.50 
 
 16.20 
 22.40 
 11.00 
 8.60 
 7.50 
 
 10.50 
 6.40 
 3.20 
 2.40 
 
 4.40 
 3.80 
 3.40 
 2.80 
 2.50 
 
 2.-80 
 4.00 
 2.00 
 1.40 
 1.30 
 
 1.10 
 1.00 
 .90 
 .90 
 15.60 
 
 12.50 
 7.30 
 6.00 
 4.00 
 2.10 
 
 .60 
 
 .90 
 
 1.10 
 
 1.30 
 
 1.50 
 5.60 
 2.30 
 2.00 
 2.00 
 
 1.50 
 10.00 
 3.70 
 5.20 
 5.00 
 
 5,00 
 25.00 
 35.00 
 29.60 
 12.00 
 
 8.30 
 35.00 
 30.00 
 25.00 
 18.00 
 12.00 
 
 21.00 
 23.00 
 25.00 
 20.00 
 17.40 
 
 12.00 
 
 6.40 
 
 6.90 
 
 14.00 
 
 34.00 
 
 30.00 
 28.00 
 11.00 
 7.30 
 7.00 
 
 14.50 
 22.00 
 18.60 
 19.00 
 17.40 
 
 9.30 
 9.30 
 11.00 
 9.60 
 8.30 
 
 5.20 
 4.70 
 12.00 
 10.00 
 8.00 
 
 12.00 
 30.00 
 15.00 
 23. 80 
 11.00 
 
 9.30 
 9.30 
 
 17.40 
 8.60 
 
 5.20 
 4.20 
 3.40 
 3.50 
 6.90 
 
 8.00 
 3.40 
 2.70 
 4.70 
 10.00 
 
 6.90 
 
 18.00 
 34.00 
 25.00 
 18.00 
 
 20.00 
 22.40 
 12.50 
 9.30 
 6.00 
 5.00 
 
 Note. — Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 12 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912, 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May ^ 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 10.30 
 12.00 
 31.10 
 
 1.40 
 5.93 
 5.62 
 12.00 
 5.33 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 633. 00 
 
 718. 00 
 
 1,920.00 
 
 86.10 
 341. 00 
 346. 00 
 714.00 
 328. 00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 1.38 
 4.25 
 2.61 
 8.77 
 10.00 
 14.70 
 12.00 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 82.10 
 261.00 
 160.00 
 522.00 
 615.00 
 875.00 
 738. 00 
 
 5,070.00 
 
 Note. — One channel; bed sand and silt; shifting. This stream is tributary to Wailuku River. 
 
 The following discharge measurement was made at station No. 12A by E. O. 
 Christiansen: 
 
 December 27, 1912: Gage height, 0.48 foot; discharge, 0. 
 
ISLAND OF HAW An. 
 
 243 
 
 Daily gage height, in feet, at station No. 12 A at 2,700-foot level, near Hilo, Hawaii, for 
 
 1912. 
 
 [A. Fataeff, observer.] -. 
 
 Day. 
 
 Dec. 
 
 Day. 
 
 Dec. 
 
 Day. 
 
 Dec. 
 
 1 
 
 
 11 
 
 0.40 
 .39 
 .39 
 .40 
 .42 
 
 .44 
 .38 
 .38 
 .40 
 
 21 
 
 0.42 
 
 2 
 
 
 12 
 
 22 
 
 
 3 
 
 0.52 
 .45 
 .42 
 
 .41 
 .42 
 .46 
 .42 
 .40 
 
 13 
 
 23 , 
 
 
 4 
 
 14 
 
 24 
 
 
 5 
 
 15 
 
 25 
 
 .45 
 
 6 
 
 16 
 
 26 
 
 
 7 
 
 17 
 
 27 
 
 28.. 
 
 .46 
 
 8 
 
 18 
 
 .42 
 
 9 
 
 19 
 
 29 
 
 30 
 
 .42 
 
 10 
 
 20 
 
 
 
 
 
 31 
 
 
 
 
 
 Discharge measurements at station No. 13 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage, 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13 
 
 Feet. 
 0.70 
 
 .52 
 
 Sec.-ft. 
 2.03 
 .69 
 
 Nov. 27 
 
 Feet. 
 0.90 
 1.39 
 
 Sec.-ft. 
 5.36 
 
 Sept. 27 
 
 Dec. 27 
 
 21.2 
 
 
 
 
 Note. — One channel; bed sand and silt; shifting. This stream is tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 13 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, BelayefT, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.52 
 
 
 1.12 
 1.04 
 
 1.38 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 . 
 
 0.74 
 .72 
 .71 
 
 .72 
 .75 
 . .78 
 .75 
 .72 
 
 .70 
 .68 
 .65 
 .62 
 .55 
 
 .52 
 
 
 0.90 
 .86 
 .80 
 
 1.15 
 1.20 
 
 1.27 
 
 1.27 
 
 
 
 1.34 
 1.12 
 1.05 
 
 .99 
 
 """."89" 
 
 .84 
 .82 
 
 
 
 
 1.32 
 
 4 . 
 
 1.45 
 
 1.29 
 
 "0. 40* 
 """."39" 
 
 1.14 
 
 .79 
 
 ""."69" 
 .68 
 .70 
 .67 
 
 "i.*48' 
 
 1.34 
 1.34 
 1.18 
 1.03 
 
 .93 
 
 1.08 
 
 .96 
 
 .82 
 .76 
 
 .82 
 
 .84 
 .70 
 
 .68 
 
 *"*.*64' 
 
 *"."<39' 
 
 .70 
 
 .97 
 .81 
 
 .82 
 
 "*L36" 
 
 ""."99" 
 
 .96 
 
 1.31 
 
 "Tii" 
 -1.26 
 1.04 
 
 1.38 
 
 5 
 
 1.12 
 
 6 
 
 1.06 
 
 7 
 
 ""o.'io* 
 
 .10 
 
 .11 
 
 .11 
 .11 
 
 .40 
 .33 
 .32 
 
 .31 
 .29 
 .26 
 .41 
 1.08 
 
 .72 
 
 1.08 
 
 8 
 
 
 
 1.28 
 
 9 
 
 .81 
 .86 
 
 .89 
 1.28 
 1.44 
 1.51 
 1.35 
 
 1.09 
 1.22 
 
 "i.'29" 
 
 1.23 
 .92 
 .94 
 
 
 
 
 1.09 
 
 10.. 
 
 1.56 
 
 1.41 
 1.29 
 
 'T26' 
 1.22 
 
 1.08 
 
 "i.'io" 
 
 1.12 
 1.10 
 
 1.34 
 1.27 
 1.14 
 
 
 
 .99 
 
 11 j 
 
 
 
 .92 
 
 12 
 
 
 
 
 .62 
 .69 
 
 .88 
 
 13 
 
 .89 
 
 .58 
 
 1.09 
 
 .84 
 
 14.. 
 
 .85 
 
 15 
 
 
 .50 
 
 .86 
 
 .91 
 .79 
 
 .93 
 
 16 
 
 
 1.35 
 
 .98 
 
 17 
 
 .75 
 
 .65 
 
 
 .87 
 
 18 
 
 
 
 .90 
 
 .80 
 
 .79 
 .78 
 
 .80 
 .76 
 .79 
 .64 
 
 .55 
 .54 
 .52 
 .48 
 1.32 
 
 1.01 
 
 1.09 
 
 '"i."58* 
 1.15 
 
 1.05 
 
 1.30 
 
 "i."35* 
 
 1.12 
 1.04 
 1.12 
 
 .82 
 
 19 
 
 .48 
 .44 
 
 .32 
 .30 
 .30 
 .30 
 
 .71 
 
 
 
 .95 
 
 20 
 
 
 
 
 
 21 
 
 
 .60 
 
 .41 
 
 """."58" 
 .55 
 .55 
 .50 
 
 .47 
 .84 
 
 1.02 
 
 22 
 
 
 23 
 
 .68 
 
 
 
 
 24 .. 
 
 
 .71 
 
 .52 
 
 .57 
 
 1.02 
 
 1.15 
 
 
 25 
 
 
 .92 
 
 .86 
 .81 
 .76 
 
 .72 
 .80 
 
 1.22 
 
 1.31 
 1.25 
 1.22 
 
 • .60 
 
 """."58" 
 
 .79 
 
 .71 
 
 .82 
 .74 
 
 .80 
 
 .94 
 .90 
 
 1.26 
 
 26 
 
 
 
 27 
 
 .31 
 .30 
 .30 
 .29 
 
 
 1.36 
 
 28 
 
 1.11 
 
 29 
 
 
 
 1.09 
 
 30 
 
 
 
 
 "'i.'ii' 
 
 1.21 
 
 
 31 
 
 
 .49 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
244 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 13 at 2,700-foot level, near Silo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 57.5 
 45.0 
 38.0 
 32.0 
 27.0 
 
 15.4 
 13.8 
 12.4 
 11.2 
 10.0 
 
 1.02 
 
 .95 
 
 .88 
 
 2.30 
 
 5.50 
 
 7.10 
 9.00 
 11.20 
 13.80 
 11.50 
 
 5.50 
 2.90 
 2.54 
 2.90 
 3.26 
 
 2.30 
 1.80 
 2.10 
 2.42 
 2.30 
 
 11 
 
 8.75 
 8.50 
 8.25 
 8.00 
 7.75 
 
 7.50 
 
 7.50 
 5.50 
 4.90 
 4.30 
 
 12.40 
 13.00 
 14.20 
 15.00 
 16.20 
 
 10.60 
 11.50 
 13.00 
 15.00 
 17.00 
 
 2.54 
 2.42 
 10.60 
 85.00 
 122. 00 
 
 85.00 
 108. 00 
 102. 00 
 109.00 
 
 71.00 
 
 21 
 
 3.70 
 3.26 
 2.90 
 2.54 
 2.30 
 
 2.10 
 1.70 
 1.30 
 1.02 
 .74 
 1.02 
 
 19.50 
 22.00 
 24.50 
 27.00 
 28.00 
 
 16.60 
 12.40 
 11.80 
 10.30 
 9.50 
 
 33.20 
 
 2.. 
 
 12 
 
 22 
 
 27.50 
 
 3.. 
 
 13 
 
 23 
 
 19.50 
 
 4 
 
 14 
 
 24 
 
 10.60 
 
 5 
 
 15 
 
 25 
 
 49.00 
 
 6 
 
 16 
 
 26 ; 
 
 32.00 
 
 7 
 
 17 
 
 27 
 
 24.50 
 
 8.. 
 
 18 
 
 28 
 
 22.50 
 
 9.. 
 
 19 
 
 29 
 
 36.80 
 
 10.. 
 
 20 
 
 30 
 
 32.00 
 
 
 
 31 
 
 32.00 
 
 
 
 
 Daily discharge, in second-feet, at station No. 13 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2.50 
 2.50 
 2.80 
 2.50 
 2.40 
 
 2.50 
 2.90 
 3.30 
 2.90 
 2.50 
 
 2.30 
 2.10 
 1.80 
 1.50 
 1.00 
 
 .70 
 .60 
 
 .eo 
 
 .50 
 .30 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 9.50 
 
 15.00 
 22.00 
 29.00 
 35.00 
 15.00 
 
 5.00 
 3.00 
 5.00 
 7.00 
 
 4.00 
 6.00 
 5.50 
 4.70 
 3.50 
 
 2.00 
 2.50 
 3.00 
 3.70 
 4.70 
 
 5.30 
 16.20 
 24.00 
 27.50 
 19.50 
 
 9.80 
 
 13.80 
 20.00 
 18.00 
 16.60 
 
 14.20 
 5.90 
 6.30 
 5.00 
 5.90 
 
 4.70 
 3.70 
 3.00 
 2.50 
 3.50 
 25.00 
 
 16.00 
 13.00 
 11.50 
 13.00 
 15.80 
 
 15.80 
 24.00 
 35.00 
 32.00 
 30.00 
 
 22.50 
 16.60 
 17.00 
 13.00 
 13.80 
 
 9.50 
 15.00 
 10.00 
 10.60 
 10.00 
 
 19.00 
 15.80 
 11.20 
 10.00 
 13.80 
 
 17.50 
 15.00 
 13.80 
 10.00 
 15.00 
 
 20.00 
 25.00 
 20.00 
 24.50 
 30.00 
 
 16.60 
 10.00 
 7.00 
 6.00 
 6.00 
 
 5.50 
 5.50 
 5.30 
 6.00 
 7.00 
 
 8.00 
 2.90 
 2.60 
 2.40 
 2.30 
 
 2.20 
 2.10 
 2.10 
 4.00 
 1.30 
 
 1.30 
 1.20 
 1.50 
 2.00 
 1.00 
 .50 
 
 0.40 
 
 .30 
 .20 
 .10 
 .10 
 
 .10 
 .10 
 .20 
 .40 
 .60 
 
 .80 
 
 1.00 
 
 1.20 
 
 .90 
 
 .60 
 
 1.20 
 1.80 
 1.60 
 1.50 
 1.40 
 
 1.30 
 1.80 
 2.40 
 2.90 
 3.40 
 
 2.40 
 
 3.90 
 2.80 
 2.00 
 2.00 
 
 3,00 
 
 10.00 
 19.00 
 10.60 
 8.80 
 
 7.30 
 6.30 
 5.30 
 4.30 
 3.90 
 
 20.00 
 15.00 
 
 9.80 
 15.00 
 
 4.70 
 
 2.00 
 4.00 
 4.00 
 2.00 
 .50 
 
 .10 
 
 .30 
 
 .50 
 
 2.40 
 
 2.00 
 
 .70 
 1.10 
 8.00 
 11.50 
 10.00 
 5.00 
 
 0.70 
 1.00 
 15.00 
 11.20 
 3.40 
 
 2.00 
 2.20 
 2.10 
 2.30 
 2.00 
 
 1.70 
 1.50 
 2.20 
 4.00 
 5.70 
 
 3.40 
 4.00 
 5.50 
 7.00 
 1.00 
 
 1.00 
 1.20 
 1.00 
 1.00 
 .60 
 
 .40 
 4.30 
 5.00 
 4.00 
 3.00 
 2.00 
 
 7.00 
 12.00 
 20.00 
 30.00 
 26.00 
 
 19.00 
 19.00 
 12.40 
 8.20 
 7.00 
 
 6.10 
 9.50 
 6.70 
 3.90 
 3.00 
 
 3.90 
 3.00 
 3.50 
 3.40 
 3.30 
 
 3.50 
 3.00 
 3.40 
 1.70 
 1.40 
 
 1.00 
 
 .90 
 
 .70 
 
 .50 
 
 18.00 
 
 10.60 
 8.50 
 6.40 
 4.30 
 2.30 
 
 2.10 
 1.90 
 1.70 
 1.50 
 2.20 
 
 2.30 
 6.90 
 3.70 
 3.90 
 4.00 
 
 2.00 
 10.00 
 7.80 
 9.80 
 10.00 
 
 11.00 
 
 15.00 
 20.00 
 31.00 
 11.50 
 
 8.80 
 35.00 
 30.00 
 30.00 
 20.00 
 10.30 
 
 21.00 
 15.00 
 30.00 
 25.00 
 20.00 
 
 10.00 
 7.30 
 6.70 
 
 17.50 
 35.00 
 
 35.00 
 
 24.00 
 
 15.40 
 
 8.50 
 
 5.00 
 
 19.50 
 30.00 
 17.00 
 30.00 
 19.50 
 
 10.60 
 8.50 
 
 10.60 
 7.00 
 3.50 
 
 6.30 
 5.50 
 12.00 
 15.00 
 13.40 
 
 20.00 
 
 2 
 
 25.00 
 
 3 
 
 18.00 
 
 4 
 
 21.00 
 
 5 
 
 10.60 
 
 6 
 
 9.00 
 
 7 
 
 9.50 
 
 8 
 
 16.20 
 
 9 
 
 9.80 
 
 10 
 
 7.30 
 
 11 
 
 5.90 
 
 12 
 
 5.10 
 
 13 
 
 4.30 
 
 14 
 
 4.50 
 
 15 
 
 6.10 
 
 16 
 
 7.10 
 
 17 
 
 4.90 
 
 18 
 
 3.90 
 
 19 
 
 6.50 
 
 20 
 
 15.00 
 
 21 
 
 8.00 
 
 22 
 
 20.00 
 
 23 
 
 30.00 
 
 24.... 
 
 35.00 
 
 25 
 
 15.40 
 
 26 
 
 20.00 
 
 27 
 
 20.00 
 
 28 
 
 10.30 
 
 29 
 
 9.70 
 
 30 
 
 5.00 
 
 31 
 
 5.00 
 
 
 
 Note. — Daily discharge determined from rating curve fairly well denned, except for flood stages. Dis- 
 charge for days* for which gage heights are missing estimated "from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
ISLAND OF HAWAII. 245 
 
 Monthly discharge at station No. 13 at 2,700-foot level, near Hilo, Hawaii, for 1911-12 . 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 'Mean 
 discharge 
 in second- 
 feet. 
 
 3.86 
 12.80 
 33.70 
 
 1.25 
 5.05 
 9.39 
 16.20 
 7.48 
 
 Run-off 
 (total in 
 acre-feet). 
 
 237. 00 
 
 755. 00 
 
 2, 070. 00 
 
 76.90 
 290. 00 
 577. 00 
 964. 00 
 460. 00 
 
 Month. 
 
 1912— Continued 
 
 June : 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 1.31 
 
 6.36 
 3.27 
 8.03 
 10.50 
 16.10 
 12.50 
 
 8.11 
 
 78.00 
 391. 00 
 201. 00 
 478. 00 
 646. 00 
 958. 00 
 769. 00 
 
 .00 
 
 Discharge measurements at station No. 14 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 13 
 
 Feet. 
 0.74 
 
 .74 
 
 Sec.-ft. 
 
 Nov. 27 
 
 Feet. 
 
 0.85 
 
 .70 
 
 Sec.-ft. 
 0.06 
 
 Sept. 27 . 
 
 
 Dec. 27... . 
 
 .04 
 
 
 
 
 
 Note.— Bed sand, gravel, and small cobbles; fairly smooth. Shifting. One channel at all stages. 
 This stream is tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 14 at 2,700-foot level, near Hilo, Hawaii, for 
 
 1912. 
 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.72 
 
 
 0.95 
 
 .89 
 
 0.99 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.78 
 .75 
 
 .74 
 
 .76 
 
 .78 
 .81 
 .79 
 
 .78 
 
 .72 
 .71 
 .70 
 .70 
 .60 
 
 "(a)" 
 (a) 
 
 1.01 
 .97 
 .94 
 
 0.94 
 1.00 
 1.02 
 
 1.07 
 
 
 
 1.39 
 1.28 
 1.14 
 
 1.-09 
 
 "i.'os" 
 
 1.00 
 .92 
 
 
 
 
 1.02 
 
 4 
 
 1.41 
 1.39 
 
 "(a)" 
 
 1.39 
 
 .79 
 
 ""."84" 
 
 .80 
 
 .95 
 
 1.00 
 
 'T65' 
 
 1.00 
 
 1.24 
 
 1.04 
 
 .91 
 
 .80 
 1.00 
 
 .88 
 .85 
 .82 
 
 .85 
 
 .74 
 .74 
 
 .74 
 ----- 
 
 "".65 
 
 .64 
 .75 
 .64 
 .65 
 
 "".'9l' 
 
 '"".'96' 
 .90 
 .96 
 
 '""."95" 
 .90 
 
 .88 
 
 .72 
 
 5 
 
 .62 
 
 6 
 
 .58 
 
 7 
 
 "*(a)"" 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 0.81 
 
 .95 
 
 .59 
 
 8 
 
 
 
 .72 
 
 9 
 
 .98 
 .99 
 
 1.00 
 1.00 
 1.19 
 1.21 
 1.04 
 
 .81 
 1.04 
 
 "1*29* 
 
 1.18 
 1.08 
 1.05 
 
 
 
 
 .63 
 
 10 
 
 1.42 
 
 1.40 
 1.35 
 
 "i.24" 
 
 1.31 
 
 1.30 
 
 "i'.Zl 
 
 1.39 
 1.40 
 
 1.44 
 1.42 
 1.36 
 
 
 
 .62 
 
 11 
 
 
 
 .60 
 
 12 
 
 
 
 
 .71 
 
 .74 
 
 .58 
 
 13 
 
 1.22 
 
 0.70 
 
 1.30 
 
 .55 
 
 14 
 
 .56 
 
 15 
 
 
 .66 
 
 1.00 
 
 .77 
 .76 
 
 .62 
 
 16 
 
 
 .95 
 
 .66 
 
 17 
 
 
 1.00 
 
 0.80 
 
 
 .54 
 
 18 
 
 
 
 .78 
 
 .81 
 .79 
 .76 
 
 .80 
 .82 
 .80 
 .79 
 
 .75 
 
 .74 
 
 .74 
 
 1.08 
 
 .76 
 .80 
 
 ""."94" 
 
 .85 
 
 .75 
 
 .95 
 
 "Too" 
 
 .94 
 .92 
 .95 
 
 .48 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .99 
 
 
 
 .58 
 
 20 
 
 
 
 
 
 21 
 
 
 .78 
 
 1.00 
 
 ""."72" 
 .75 
 .80 
 .75 
 
 .75 
 .85 
 
 60 
 
 22 
 
 
 23... 
 
 .90 
 
 
 .90 
 1.05 
 
 .95 
 .89 
 .74 
 .74 
 
 
 24 
 
 
 25 
 
 
 1.02 
 
 1.00 
 .99 
 .99 
 .96 
 
 1.04 
 
 1.41 
 
 1.41 
 1.38 
 1.30 
 
 .88 
 """."86' 
 
 .99 
 
 .88 
 
 1.00 
 
 .92 
 
 .90 
 
 .84 
 .85 
 
 74 
 
 26 
 
 
 
 
 27 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 .70 
 
 .64 
 
 28 
 
 29 
 
 
 
 .64 
 
 30 
 
 
 
 
 
 .85 
 
 
 31 
 
 
 .78 
 
 
 
 
 
 .88 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
246 
 
 Daily discharge, in second-feet, at station No. 14 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.60 
 .50 
 .40 
 .30 
 .25 
 
 .19 
 .18 
 .17 
 .16 
 .15 
 
 0.05 
 .05 
 .05 
 .05 
 .10 
 
 .11 
 
 .12 
 .13 
 .14 
 .12 
 
 0.10 
 .05 
 .05 
 .05 
 .10 
 
 .05 
 .05 
 .05 
 .10 
 .05 
 
 11 
 
 0.15 
 .14 
 .13 
 .12 
 .12 
 
 .12 
 .11 
 .10 
 .10 
 .10 
 
 0.12 
 .12 
 .12 
 .12 
 .12 
 
 .10 
 .12 
 .14 
 .15 
 .16 
 
 0.10 
 .05 
 .18 
 .22 
 .86 
 
 .19 
 .60 
 .50 
 
 .62 
 .34 
 
 21 
 
 0.10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.18 
 .19 
 .22 
 .25 
 
 .28 
 
 .19 
 .16 
 .16 
 .13 
 .11 
 
 0.29 
 
 2 
 
 12 
 
 22 
 
 .22 
 
 3 
 
 13 
 
 23 
 
 .19 
 
 4 
 
 14 
 
 24 
 
 .10 
 
 5 
 
 15 
 
 25 
 
 .25 
 
 6 
 
 16 
 
 26 
 
 .19 
 
 7 
 
 17 
 
 27 
 
 .15 
 
 8 
 
 18 
 
 28 
 
 .15 
 
 9 
 
 19 
 
 29 
 
 .34 
 
 10 
 
 20 
 
 30... 
 
 .30 
 
 
 
 31 
 
 .25 
 
 
 
 
 Daily discharge, in second-feet, at station No. 14 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 o.io 
 
 .10 
 .10 
 .05 
 .05 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 (a) 
 (a) 
 (a) 
 («) 
 («) 
 
 (a) 
 (a) 
 (a) 
 
 O) 
 (a) 
 
 C«) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (0) 
 
 (a; 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 0.10 
 
 .50 
 .90 
 1.00 
 .90 
 
 .80 
 
 .70 
 .60 
 .50 
 .40 
 
 0.30 
 .30 
 .20 
 .20 
 .15 
 
 .15 
 
 .15 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .50 
 .50 
 .25 
 
 .10 
 
 .25 
 .80 
 .70 
 .70 
 
 .45 
 .30 
 .25 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .25 
 .80 
 
 0.30 
 .20 
 .15 
 .20 
 .20 
 
 .25 
 1.00 
 1.00 
 .90 
 .95 
 
 .90 
 .80 
 .70 
 .60 
 .70 
 
 .70 
 .70 
 .70 
 .90 
 .90 
 
 1.00 
 .95 
 .80 
 .90 
 .90 
 
 .90 
 .85 
 .70 
 .60 
 .70 
 
 0.80 
 .70 
 .80 
 .90 
 
 1.00 
 
 .90 
 .80 
 .80 
 .70 
 .70 
 
 .60 
 .60 
 .55 
 .40 
 .30 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .15 
 .15 
 .15 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 ""6." 05" 
 "".05 
 
 '"".'io" 
 
 .10 
 
 "".'26" 
 
 .15 
 .20 
 .15 
 
 0.10 
 
 .20 
 .90 
 .65 
 .40 
 
 .30 
 .30 
 .25 
 .20 
 .15 
 
 .80 
 .80 
 .70 
 .50 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .15 
 .25 
 .20 
 
 .15 
 .15 
 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 
 .10 
 
 .20 
 .90 
 .10 
 
 .10 
 .10 
 .10 
 .15 
 .20 
 
 .10 
 .05 
 .05 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .10 
 .05 
 
 .05 
 .10 
 
 .10 
 .10 
 
 .10 
 
 .10 
 
 0.30 
 .40 
 .50 
 .60 
 .25 
 
 .20 
 .60 
 .25 
 .15 
 .10 
 
 .10 
 .20 
 .15 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .30 
 .40 
 
 0.15 
 .15 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .10 
 
 .10 
 .30 
 .10 
 .10 
 .20 
 
 .20 
 .40 
 .60 
 .15 
 
 .10 
 
 .05 
 
 1.00 
 
 1.00 
 .80 
 .60 
 .15 
 
 0.20 
 .15 
 .30 
 .20 
 .15 
 
 .15 
 .15 
 .15 
 .20 
 .80 
 
 .70 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .20 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.30 
 
 2 
 
 .40 
 
 3... 
 
 .20 
 
 4 
 
 .05 
 
 5 
 
 .05 
 
 6 
 
 .05 
 
 7 
 
 .05 
 
 8 
 
 .05 
 
 9 
 
 .05 
 
 10 
 
 .05 
 
 11 
 
 .05 
 
 12 
 
 .05 
 
 13 
 
 .05 
 
 14 
 
 .05 
 
 15 
 
 .05 
 
 16 
 
 .05 
 
 17 
 
 .05 
 
 18 
 
 .05 
 
 19. 
 
 .10 
 
 20 
 
 .30 
 
 21 
 
 .20 
 
 22 
 
 .40 
 
 23 
 
 .80 
 
 24 
 
 .40 
 
 25 
 
 .05 
 
 26 
 
 .10 
 
 27 
 
 .05 
 
 28 
 
 .05 
 
 29 
 
 .05 
 
 30 
 
 .05 
 
 31 
 
 .05 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from poorly denned rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 
 near station No. 50. 
 
 Monthly discharge at station No. 1 
 
 4 at 2,700-foot level, near Hilo, 
 
 Hawaii, for 
 
 1911-12. 
 
 Month. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Month. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1911. 
 October 
 
 0.15 
 .13 
 .22 
 
 9.28 
 8.04 
 13.30 
 
 1912--Continued. 
 June 
 
 0.07 
 .29 
 .12 
 .20 
 .22 
 .19 
 .14 
 
 4.17 
 
 
 July 
 
 17.80 
 
 December 
 
 August 
 
 7.38 
 
 
 
 11 90 
 
 1912. 
 
 .04 
 .22 
 .31 
 .70 
 .42 
 
 2.46 
 12.70 
 19.10 
 41.70 
 25.80 
 
 October 
 
 13.50 
 
 January 
 
 November 
 
 11.30 
 
 February 
 
 December 
 
 8.61 
 
 
 The year 
 
 
 
 .24 
 
 176. 00 
 
 May 
 
 
 
 
 
ISLAND OF HAWAII. 247 
 
 Discharge measurements at station No. 15 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 15 
 Sept. 27 
 Nov. 27 
 
 E. 0. Christiansen. 
 
 do 
 
 .....do 
 
 Feet. 
 1.20 
 1.00 
 1.18 
 
 Sec.-ft. 
 1.19 
 .39 
 1.66 
 
 Nov. 27 
 Dec. 27 
 
 E. 0. Christiansen . 
 do 
 
 Feet. 
 1.18 
 1.36 
 
 Sec.-ft. 
 1.56 
 6.84 
 
 
 
 Note. — Bed of stream of gravel, cobbles, and some bowlders. Is somewhat rough. Probably perma- 
 nent. One channel at all stages. 
 This stream is tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 15 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, BelayefE, Selitonott, and KuznetsorT, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.99 
 
 
 1.29 
 1.20 
 
 1.40 
 
 
 2 . 
 
 
 
 
 
 
 
 
 
 3 
 
 1.22 
 1.18 
 1.12 
 
 1.18 
 1.20 
 1.25 
 1.22 
 1.20 
 
 1.10 
 1.02 
 
 .98 
 .92 
 .92 
 
 .92 
 
 —(a)' 
 
 (a) 
 
 1.15 
 1.13 
 1.10 
 
 1.12 
 1.19 
 1.20 
 1.20 
 
 
 
 1.34 
 1.24 
 1.20 
 1.18 
 
 "i.'i2~ 
 
 1.09 
 1.16 
 
 
 
 
 i. 38 
 
 4 
 
 1.58 
 
 1.50 
 
 "0. 64" 
 
 1.34 
 
 1.18 
 
 "'i.'ii' 
 
 1.12 
 1.15 
 1.04 
 
 "i.'52" 
 
 1.39 
 1.51 
 1.30 
 
 1.24 
 
 1.08 
 1.26 
 1.12 
 1.04 
 1.02 
 1.06 
 
 1.08 
 1.04 
 
 1.02 
 
 "i.'oo" 
 
 "i.02" 
 
 1.04 
 1.27 
 1.07 
 1.10 
 
 " "i."3i" 
 
 ""i'26' 
 1.20 
 1.43 
 
 ""i.'ii" 
 
 1.25 
 1.19 
 
 1.42 
 
 5 
 
 1.29 
 
 6 
 
 1.25 
 
 7 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 0.79 
 
 .78 
 .75 
 
 .71 
 fa) 
 
 (a) 
 .71 
 1.32 
 
 1.03 
 
 1.26 
 
 8 
 
 1.32 
 
 9 
 
 1.11 
 1.12 
 
 1.15 
 1.33 
 1.47 
 1.63 
 1.84 
 
 1.21 
 1.38 
 
 "i.*39" 
 
 1.27 
 1.14 
 1.18 
 
 
 
 
 1.28 
 
 10 
 
 1.48 
 
 1.42 
 1.32 
 
 
 
 1.22 
 
 11 
 
 
 
 1.20 
 
 12 
 
 
 
 
 1.06 
 
 1.09 
 
 1.15 
 
 13 .. 
 
 
 .90 
 
 1.19 
 
 1.11 
 
 14 . 
 
 1.29 
 
 1.37 
 
 1.22 
 
 "i.~26* 
 1.24 
 1.21 
 
 1.40 
 1.38 
 1.26 
 
 
 1.14 
 
 15 
 
 
 .86 
 
 1.09 
 
 1.19 
 1.09 
 
 1.22 
 
 16 . 
 
 
 1.40 
 
 1.28 
 
 17 .. 
 
 1.05 
 
 .90 
 
 
 1.13 
 
 18 .. 
 
 
 
 1.18 
 
 1.05 
 1.04 
 1.02 
 
 1.02 
 1.12 
 1.04 
 1.02 
 
 1.00 
 
 1.00 
 
 .99 
 
 .96 
 
 1.42 
 
 1.18 
 1.34 
 
 "i.'ii' 
 
 1.30 
 1.20 
 
 1.44 
 
 1.40 
 
 1.29 
 1.28 
 1.32 
 
 1.12 
 
 19 .. 
 
 .91 
 .91 
 
 .90 
 .90 
 .89 
 .88 
 
 1.01 
 
 
 
 1.20 
 
 20 
 
 
 
 
 
 21 
 
 
 .88 
 
 .89 
 
 "1*02" 
 
 1.00 
 
 1.00 
 
 .99 
 
 .95 
 1.15 
 
 1.22 
 
 22 
 
 
 23 
 
 .90 
 
 
 .81 
 1.02 
 
 .79 
 .45 
 .28 
 .15 
 
 
 24 
 
 
 25 
 
 
 1.16 
 
 1.14 
 1.11 
 1.10 
 
 1.08 
 1.02 
 
 1.32 
 
 1.41 
 1.38 
 1.29 
 
 .88 
 '"'."83' 
 
 .99 
 
 .90 
 
 1.00 
 
 .90 
 
 1.20 
 
 1.18 
 1.16 
 
 1.32 
 
 26 
 
 
 
 
 27 
 
 .90 
 .90 
 
 .85 
 
 .82 
 
 ..:...: 
 
 1.38 
 
 28 
 
 1.30 
 
 29 
 
 
 
 1.24 
 
 30 
 
 
 
 
 "i.2i" 
 
 1.22 
 
 
 31 
 
 
 .73 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second feet, at station No. 15 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 29.00 
 25.00 
 21.00 
 17.00 
 12.90 
 
 7.00 
 6.10 
 5.20 
 4.30 
 4.05 
 
 0.40 
 .38 
 .37 
 .64 
 
 1.80 
 
 2.55 
 3.30 
 4.05 
 5.20 
 3.80 
 
 0.92 
 
 .64 
 .55 
 .55 
 .64 
 
 .55 
 .46 
 .46 
 .55 
 .40 
 
 11 
 
 3.05 
 3.05 
 2.80 
 2.55 
 2.30 
 
 2.05 
 2.05 
 1.58 
 1.36 
 1.14 
 
 4.05 
 4.30 
 5.20 
 6.10 
 7.00 
 
 3.80 
 4.05 
 4.75 
 5.60 
 6.55 
 
 0.58 
 .43 
 
 4.30 
 17.00- 
 42.50 
 
 7.00 
 39.20 
 45.80 
 52.40 
 15.40 
 
 21.... 
 
 0.92 
 
 .70 
 .64 
 .58 
 .55 
 
 .52 
 .46 
 .43 
 .40 
 .38 
 .40 
 
 7.45 
 8.35 
 9.62 
 11.30 
 12.90 
 
 5.20 
 3.80 
 3.80 
 2.05 
 1.25 
 
 5.20 
 
 2 
 
 12 
 
 22 
 
 3.05 
 
 3 
 
 13 
 
 23 .. 
 
 1.80 
 
 4 
 
 14... 
 
 24 . 
 
 1.25 
 
 5 
 
 15 
 
 25 
 
 29.00 
 
 6 
 
 16.... 
 
 26 
 
 18 00 
 
 7 
 
 17 
 
 27 
 
 7.90 
 
 8 
 
 18 
 
 28 
 
 4.75 
 
 9 
 
 19..... -.. 
 
 29.... 
 
 19.00 
 
 10 
 
 20 
 
 30 
 
 17.00 
 
 
 
 31 
 
 12.90 
 
 
 
 
248 
 
 Daily discharge, in second-feet, at station No. 15 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 2.00 
 
 (a) 
 (a) 
 
 7.00 
 
 6.00 
 
 12.00 
 
 0.10 
 
 1.00 
 
 0.35 
 
 16.00 
 
 4.05 
 
 8.80 
 
 2.00 
 
 5.00 
 
 2.00 
 
 15.00 
 
 .10 
 
 1.50 
 
 .40 
 
 20.00 
 
 1.80 
 
 12.00 
 
 2.30 
 
 (a) 
 
 1.25 
 
 .90 
 
 20.00 
 
 .10 
 
 6.10 
 
 12.00 
 
 30.00 
 
 1.20 
 
 20.00 
 
 1.60 
 
 (a) 
 
 1.05 
 
 1.70 
 
 25.00 
 
 .10 
 
 2.80 
 
 6.10 
 
 40.00 
 
 .65 
 
 14.00 
 
 .90 
 
 (a) 
 
 .70 
 
 2.05 
 
 40.00 
 
 .10 
 
 1.80 
 
 1.60 
 
 19.00 
 
 .50 
 
 6.10 
 
 1.60 
 
 CO 
 
 («) 
 
 (a) 
 
 .70 
 
 1.80 
 
 17.00 
 
 .10 
 
 1.60 
 
 1.40 
 
 5.65 
 
 .45 
 
 3.00 
 
 1.80 
 
 .65 
 
 30.00 
 
 10.00 
 
 .10 
 
 1.20 
 
 1.15 
 
 18.00 
 
 .40 
 
 1.80 
 
 3.05 
 
 .70 
 
 28.00 
 
 6.00 
 
 .10 
 
 .90 
 
 .90 
 
 4.30 
 
 .40 
 
 1.80 
 
 2.30 
 
 (a) 
 
 .80 
 
 25.00 
 
 4.00 
 
 .10 
 
 .67 
 
 1.25 
 
 2.80 
 
 .40 
 
 11.20 
 
 1.80 
 
 (a) 
 
 .90 
 
 15.30 
 
 2.00 
 
 .10 
 
 1.35 
 
 .50 
 
 1.70 
 
 .45 
 
 30.00 
 
 .70 
 
 (a) 
 
 1.25 
 
 10.45 
 
 1.00 
 
 .20 
 
 1.50 
 
 .60 
 
 .65 
 
 .50 
 
 20.00 
 
 .45 
 
 (a) 
 
 5.65 
 
 5.20 
 
 1.00 
 
 .20 
 
 1.60 
 
 .60 
 
 3.30 
 
 3.50 
 
 9.60 
 
 .35 
 
 0.10 
 
 14.55 
 
 4.60 
 
 1.00 
 
 .25 
 
 1.70 
 
 .70 
 
 .90 
 
 .60 
 
 3.05 
 
 .25 
 
 .10 
 
 32.00 
 
 4.05 
 
 .50 
 
 .20 
 
 1.20 
 
 1.20 
 
 .50 
 
 .70 
 
 1.70 
 
 .25 
 
 .10 
 
 52.40 
 
 7.45 
 
 .50 
 
 .20 
 
 .67 
 
 1.70 
 
 .45 
 
 .70 
 
 1.50 
 
 .25 
 
 .10 
 
 2.05 
 
 2.30 
 
 .50 
 
 .20 
 
 .50 
 
 .70 
 
 .60 
 
 .50 
 
 8.80 
 
 .25 
 
 (a) 
 
 7.90 
 
 2.80 
 
 .55 
 
 .25 
 
 .50 
 
 1.20 
 
 .60 
 
 10.00 
 
 18.00 
 
 .25 
 
 (a) 
 (a) 
 
 7.90 
 
 3.30 
 
 .50 
 
 .20 
 
 .40 
 
 1.60 
 
 .55 
 
 1.60 
 
 12.10 
 
 .25 
 
 7.90 
 
 2.80 
 
 .45 
 
 .20 
 
 .30 
 
 1.20 
 
 .50 
 
 6.10 
 
 10.40 
 
 .25 
 
 5.20 
 
 7.95 
 
 2.05 
 
 .40 
 
 .20 
 
 .30 
 
 .80 
 
 .45 
 
 6.00 
 
 8.80 
 
 .25 
 
 30.00 
 
 3.50 
 
 8.80 
 
 .30 
 
 .20 
 
 .25 
 
 .60 
 
 .45 
 
 6.00 
 
 4.05 
 
 .25 
 
 50.00 
 
 1.15 
 
 7.90 
 
 .30 
 
 .30 
 
 .20 
 
 .45 
 
 .90 
 
 30.00 
 
 3.80 
 
 .25 
 
 60.00 
 
 1.60 
 
 3.30 
 
 .25 
 
 .30 
 
 .10 
 
 .40 
 
 .50 
 
 50.00 
 
 5.20 
 
 .25 
 
 45.00 
 
 1.50 
 
 4.20 
 
 .20 
 
 .30 
 
 .45 
 
 .40 
 
 .45 
 
 12.10 
 
 3.50 
 
 .25 
 
 35.00 
 
 1.35 
 
 5.20 
 
 .20 
 
 .35 
 
 .30 
 
 .35 
 
 .40 
 
 4.30 
 
 1.80 
 
 .25 
 
 30.00 
 
 1.15 
 
 9.60 
 
 .20 
 
 .25 
 
 .10 
 
 .30 
 
 .40 
 
 1.80 
 
 1.60 
 
 .25 
 
 20.00 
 
 .80 
 
 7.90 
 
 .15 
 
 .40 
 
 .10 
 
 1.25 
 
 .40 
 
 60.00 
 
 1.35 
 
 .25 
 
 10.00 
 
 .70 
 
 4.05 
 
 .10 
 
 .25 
 
 .10 
 
 1.00 
 
 .35 • 
 
 50.00 
 
 9.00 
 
 .15 
 
 8.00 
 
 .65 
 
 3.50 
 
 .10 
 
 .20 
 
 .10 
 
 .80 
 
 .30 
 
 40.00 
 
 6.00 
 
 .10 
 
 
 .95 
 
 4.00 
 
 .10 
 
 .'20 
 
 .20 
 
 .60 
 
 10.45 
 
 20.00 
 
 2.30 
 
 .10 
 
 
 18.00 
 
 
 .10 
 
 
 .20 
 
 .90 
 
 
 2.05 
 
 
 Dec. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 
 17 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 14.00 
 20.00 
 
 7.90 
 10.45 
 
 4.05 
 
 3.05 
 3.30 
 5.20 
 3.80 
 2.30 
 
 1.80 
 1.25 
 .80 
 1.15 
 2.30 
 
 3.80 
 1.05 
 .90 
 1.80 
 8.00 
 
 2.30 
 
 20.00 
 40.00 
 25.00 
 5.20 
 
 6.40 
 
 7.90 
 4.30 
 2.80 
 2.00 
 2.00 
 
 a Channel dry. 
 
 Dis- 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages, 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 15 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 5.14 
 4.65 
 11.30 
 
 10.10 
 6.12 
 7.21 
 5.14 
 
 Run-off 
 (total in 
 acre-feet). 
 
 318. 00 
 278. 00 
 699. 00 
 
 49.20 
 581. 00 
 376. 00 
 429. 00 
 316. 00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.20 
 .96 
 1.39 
 6.02 
 10.20 
 8.04 
 6.93 
 
 5.23 
 
 Run-ofI 
 (total in 
 acre-feet). 
 
 11.90 
 59.00 
 85.50 
 358.00 
 627.00 
 478.00 
 426.00 
 
 3,800.00 
 
ISLAND OF HAWAII. 
 
 249 
 
 Discharge measurements at station No. 16 at 2,700-foot level, near Kilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 15 
 
 Feet. 
 0.46 
 .35 
 
 Sec.-ft. 
 0.10 
 .01 
 
 Nov. 27 . . 
 Dec. 27.. 
 
 
 Feet. 
 
 0.35 
 
 .66 
 
 Sec.-ft. 
 0.05 
 
 Sept. 26 
 
 
 .14 
 
 
 
 
 Note. — Bed of stream of sand, gravel, and silt. Shifting. One channel at all stages. 
 This stream is tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 16 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.31 
 
 
 0.42 
 .39 
 
 0.48 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.46 
 .44 
 
 .42 
 
 .45 
 
 .45 
 .48 
 .45 
 .44 
 
 .42 
 .41 
 .41 
 .40 
 .34 
 
 (a) 
 
 -{ay 
 
 (a) 
 
 0.50 
 .46 
 .40 
 
 0.53 
 .54 
 .59 
 
 .59 
 
 
 
 0.60 
 .56 
 .55 
 
 .54 
 
 """52' 
 
 .51 
 .52 
 
 
 
 
 0.42 
 
 4 
 
 0.85 
 .69 
 
 "6.26" 
 
 '""18* 
 
 .69 
 
 .40 
 
 ""."46" 
 .39 
 .44 
 
 .42 
 
 "6." 49" 
 .44 
 
 .50 
 .50 
 .50 
 
 .48 
 .52 
 .48 
 .46 
 .42 
 
 .48 
 
 .28 
 .26 
 
 .25 
 
 ""."25" 
 
 "".2Q 
 
 .28 
 .42 
 .25 
 .30 
 
 ""."46" 
 
 ""."34" 
 
 .39 
 .56 
 
 """."48" 
 .40 
 .38 
 
 .56 
 
 5 
 
 .48 
 
 6 
 
 .45 
 
 7 
 
 "(a)" 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 0.41 
 .32 
 .30 
 
 .30 
 
 (a) 
 (a) 
 .40 
 
 .77 
 
 .40 
 
 .42 
 
 8 
 
 
 
 .52 
 
 9 
 
 .51 
 
 .50 
 
 .51 
 .56 
 .71 
 .76 
 .64 
 
 .55 
 
 .83 
 
 ""."86" 
 
 .68 
 .47 
 .52 
 
 
 
 
 .45 
 
 10 
 
 .72 
 
 .71 
 .69 
 
 ""."64" 
 .69 
 
 .62 
 
 ""."ei" 
 
 .63 
 
 .62 
 
 .72 
 .72 
 .66 
 
 
 
 .42 
 
 11 
 
 
 
 .40 
 
 12 
 
 
 
 
 .38 
 .39 
 
 .40 
 
 13 
 
 .60 
 
 .37 
 
 .61 
 
 .40 
 
 14 
 
 .41 
 
 15 
 
 
 .31 
 
 .54 
 
 .44 
 .40 
 
 .44 
 
 16 
 
 
 .50 
 
 .45 
 
 17 
 
 .45 
 
 .40 
 
 
 .38 
 
 i8 : 
 
 
 
 .41 
 
 .39 
 .34 
 .34 
 
 .35 
 .35 
 .29 
 .25 
 
 .24 
 .24 
 .24 
 .24 
 .50 
 
 .40 
 
 .42 
 
 ""."45" 
 .40 
 
 .38 
 
 .55 
 
 ""."56' 
 
 .46 
 .42 
 .41 
 
 .40 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .41 
 
 
 
 .43 
 
 20 
 
 
 
 
 
 21 
 
 
 .39 
 
 .54 
 
 ""."45" 
 .45 
 .45 
 
 .44 
 
 .44 
 .44 
 
 42 
 
 22 
 
 
 23 
 
 .40 
 
 
 .53 
 .52 
 
 .42 
 .40 
 .35 
 .35 
 
 
 24 
 
 
 25 
 
 
 .52 
 
 .51 
 .46 
 .42 
 .41 
 .54 
 
 .68 
 
 .70 
 .65 
 .64 
 
 .40 
 "".'38' 
 
 .49 
 
 .45 
 .50. 
 
 .47 
 
 .38 
 
 .37 
 .35 
 
 .51 
 
 26 
 
 27 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 ""66 
 
 28 
 
 .60 
 
 29 
 
 
 
 .45 
 
 30 
 
 
 
 
 "740 
 
 .42 
 
 
 31 
 
 
 .30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily 
 
 a Channel dry. 
 
 second-feet, at station No. 16 at 2,700-foot level, near Hilo, Hawaii, 
 for 1911. 
 
 Day. 
 
 1. 
 
 2. 
 3 
 4, 
 5, 
 
 6 
 
 7 
 8 
 9 
 10 
 
 Oct. 
 
 0.70 
 .62 
 .50 
 
 Nov. 
 
 0.01 
 .01 
 .01 
 .05 
 .15 
 
 .16 
 .18 
 .20 
 .21 
 .27 
 
 Dec. 
 
 0.05 
 .04 
 .02 
 .04 
 .05 
 
 .02 
 .02 
 .04 
 .05 
 .05 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 11 
 
 0.18 
 .18 
 .16 
 .16 
 .15 
 
 .15 
 .15 
 .15 
 .14 
 .13 
 
 0.26 
 .24 
 .22 
 .21 
 .20 
 
 .16 
 .18 
 .20 
 .21 
 .22 
 
 0.05 
 .05 
 
 .27 
 
 .50 
 
 1.18 
 
 .16 
 1.10 
 
 .90 
 1.18 
 
 .62 
 
 12 
 
 13 
 
 14 
 
 15 
 
 16 
 
 17 
 
 18 
 
 19 
 
 20 
 
 
 Day. 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Oct. 
 
 0.12 
 .11 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .01 
 .01 
 
 Nov. 
 
 0.24 
 
 .27 
 .30 
 
 .18 
 .13 
 .14 
 .10 
 .05 
 
 Dec. 
 
 0.22 
 .18 
 .16 
 .15 
 
 .78 
 
 .62 
 .30 
 .28 
 .70 
 .50 
 .30 
 
250 
 
 Daily discharge, in second-feet, at station No. 16 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .10 
 .35 
 .55 
 .20 
 
 .10 
 .80 
 .80 
 .90 
 .95 
 
 .25 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .10 
 .40 
 
 0.20 
 .10 
 .10 
 .10 
 .15 
 
 .15 
 .70 
 .60 
 .50 
 .40 
 
 .35 
 .30 
 .30 
 .20 
 .30 
 
 .20 
 .20 
 .15 
 .20 
 .20 
 
 .40 
 .40 
 .25 
 .25 
 .25 
 
 .30 
 .20 
 .20 
 .20 
 .30 
 
 
 
 
 
 
 
 0.05 
 
 
 2 
 
 
 
 
 
 
 
 
 
 
 3 
 
 0.05 
 
 
 
 
 0.15 
 .10 
 .10 
 
 .10 
 
 
 
 
 
 
 4 
 
 0.90 
 
 
 0.30 
 
 
 
 
 0.10 
 
 5 
 
 
 
 0.05 
 
 
 
 .05 
 
 6 
 
 .05 
 .05 
 .05 
 .05 
 
 
 .30 
 
 
 
 
 .05 
 
 7 
 
 
 .05 
 .05 
 .05 
 
 
 
 
 8 
 
 
 
 .05 
 .05 
 .05 
 
 
 
 
 .05 
 
 9 
 
 
 
 
 .io 
 
 .05 
 
 10 
 
 
 
 
 11 
 
 
 
 
 
 
 .05 
 .05 
 .05 
 .05 
 
 
 
 
 12 
 
 
 
 
 
 
 
 
 .05 
 
 
 13 
 
 
 
 .15 
 
 
 .15 
 
 
 
 14-- 
 
 
 
 
 
 
 15 
 
 
 
 
 
 .10 
 
 
 
 
 
 16 
 
 
 
 
 
 
 .05 
 
 
 .05 
 
 .05 
 
 1£ 
 
 
 
 .05 
 
 
 
 
 
 18 
 
 
 
 
 
 
 
 
 .10 
 
 
 19 
 
 
 
 
 
 
 
 
 
 
 20 
 
 
 0.60 
 
 
 
 
 
 
 
 .05 
 .05 
 
 
 21 
 
 
 
 
 .10 
 
 
 
 
 
 22 
 
 
 
 
 
 .05 
 .05 
 .05 
 
 
 
 
 23 
 
 
 
 
 
 .10 
 .05 
 
 
 
 
 
 24 
 
 
 
 
 
 
 
 
 
 25 
 
 
 
 
 0.05 
 
 .05 
 .05 
 .05 
 
 
 
 
 .05 
 
 26 
 
 
 
 
 
 
 
 
 
 27 
 
 
 
 
 
 
 
 
 .25 
 
 28 
 
 
 
 
 
 
 
 
 .15 
 
 29 
 
 
 
 
 
 
 
 
 .05 
 
 30 
 
 
 
 
 
 
 
 .05 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 !'"" 
 
 
 
 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 
 near station No. 50. 
 
 Monthly discharge at station No. 16 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.19 
 .18 
 .34 
 
 Run-off 
 (total in 
 acre-feet). 
 
 11.90 
 10.70 
 21.00 
 
 1.23 
 17.30 
 12.90 
 16.10 
 
 6.15 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.04 
 .10 
 .10 
 .05 
 .40 
 .10 
 .08 
 
 15 
 
 Run-off 
 (total in 
 acre-feet). 
 
 2.38 
 6.15 
 6.15 
 2.98 
 24.60 
 5.95 
 4.92 
 
 107. 00 
 
ISLAND OF HAWAII. 
 
 251 
 
 Discharge measurements at station No. 17 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Aug. 15. 
 Sept. 26. 
 
 Gage 
 height. 
 
 Feet. 
 0.68 
 .64 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 0.04 
 
 Date. 
 
 Nov. 27. 
 Dec. 27. 
 
 Gage 
 height. 
 
 Feet. 
 0.69 
 .72 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 0.06 
 .15 
 
 Note.— Bed of stream of sand, gravel, and silt. Shifting. One channel at all stages. This stream is 
 tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 17 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 ..0.62 
 
 
 0.70 
 .69 
 
 0.71 
 
 
 2 
 
 
 
 
 
 
 
 
 
 
 3 
 
 0.68 
 .65 
 .64 
 
 .65 
 .65 
 .68 
 .65 
 .64 
 
 .64 
 .65 
 .65 
 .65 
 .65 
 
 .65 
 
 (a) 
 
 0.65 
 .65 
 .65 
 
 0.70 
 
 .74 
 .74 
 
 .72 
 
 
 
 0.70 
 
 .70 
 .69 
 
 .66 
 
 """."64" 
 .61 
 .65 
 
 
 
 
 0.75 
 
 4 
 
 0.92 
 
 .82 
 
 '"6"3i" 
 '"."29" 
 
 .79 
 .68 
 
 ""."76' 
 .68 
 .66 
 .69 
 
 "6" 76" 
 
 .70 
 .78 
 .70 
 .68 
 
 .64 
 .68 
 .60 
 .60 
 .59 
 
 .60 
 
 .65 
 .65 
 
 .64 
 
 '".'64' 
 
 '".'65' 
 
 .64 
 .72 
 .65 
 .66 
 
 "".'75' 
 
 ""."68" 
 .68 
 .72 
 
 """."78" 
 .75 
 .71 
 
 .72 
 
 5 
 
 .70 
 
 6 
 
 .68 
 
 7 
 
 "fa)" 
 
 (a) 
 (a) 
 
 fa) 
 
 0.66 
 .60 
 .59 
 
 .58 
 
 (a) 
 
 (a) 
 .63 
 .84 
 
 .62 
 
 .68 
 
 8 
 
 
 
 .74 
 
 9 
 
 .68 
 .70 
 
 .70 
 
 .72 
 .77 
 .88 
 .77 
 
 .71 
 
 .94 
 
 ""."9T 
 
 .87 
 .69 
 
 .82 
 
 
 
 
 .70 
 
 10 
 
 .74 
 
 .72 
 
 .71 
 
 ------- 
 
 .81 
 
 .77 
 
 """."to" 
 
 .71 
 .71 
 
 .76 
 .76 
 .70 
 
 
 
 .68 
 
 11 
 
 
 
 .66 
 
 12 
 
 
 
 
 .66 
 .67 
 
 .66 
 
 13 
 
 .70 
 
 .56 
 
 .71 
 
 .65 
 
 14 
 
 .66 
 
 15 
 
 
 .50 
 
 .63 
 
 .68 
 .57 
 
 .68 
 
 16 
 
 
 .78 
 
 .68 
 
 17 
 
 .65 
 
 .68 
 
 
 .65 
 
 18 
 
 
 
 .68 
 
 .61 
 .65 
 .64 
 
 .62 
 .65 
 .64 
 .64 
 
 .64 
 .64 
 .63 
 .62 
 .72 
 
 .68 
 .68 
 
 ""."74' 
 .74 
 
 .75 
 
 .78 
 
 """75" 
 
 .72 
 .72 
 .74 
 
 .65 
 
 19 
 
 .64 
 .62 
 
 .61 
 .61 
 .61 
 .60 
 
 .61 
 
 
 
 ?70 
 
 20 
 
 
 
 
 
 21 
 
 
 .60 
 
 .64 
 
 ""."62" 
 .61' 
 .62 
 .61 
 
 .61 
 .66 
 
 .70 
 
 22 
 
 
 23 
 
 .58 
 
 
 .61 
 .65 
 
 .65 
 .65 
 .64 
 .61 
 
 
 24 
 
 
 25 
 
 
 .71 
 
 .65 
 .64 
 .64 
 .62 
 .67 
 
 .75 
 
 .78 
 .74 
 .72 
 
 .53 
 "".*50' 
 
 .75 
 
 .71 
 
 .71 
 .70 
 
 .74 
 
 .74 
 .70 
 
 72 
 
 26 
 
 
 
 
 27 
 
 .62 
 .61 
 .60 
 .60 
 
 
 71 
 
 28 
 
 .70 
 
 29 
 
 
 
 .65 
 
 30 
 
 
 
 
 '".*64" 
 
 .75 
 
 
 31 
 
 
 .40 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 17 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.82 
 .74 
 .66 
 .58 
 .50 
 
 .50 
 .43 
 .36 
 .34 
 .29 
 
 0.10 
 .10 
 .10 
 .12 
 .22 
 
 .29 
 .36 
 .43 
 .50 
 .46 
 
 0.12 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .12 
 .10 
 
 11.. 
 
 0.22 
 .22 
 .22 
 .18 
 .18 
 
 .15 
 .15 
 
 .18 
 .15 
 .15 
 
 0.46 
 
 .46 
 .46 
 .46 
 .46 
 
 .32 
 .32 
 .36 
 .36 
 .40 
 
 0.14 
 .10 
 .32 
 .58 
 
 1.70 
 
 .32 
 1.35 
 1.30 
 1.46 
 
 .74 
 
 21 
 
 0.14 
 .12 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.40 
 .43 
 .43 
 .46 
 .50 
 
 .32 
 .18 
 .22 
 .15 
 .14 
 
 0.32 
 
 2 
 
 12.. . 
 
 22 
 
 .22 
 
 3 
 
 13.. 
 
 23 
 
 .18 
 
 4 
 
 14... 
 
 24 
 
 .15 
 
 5..... 
 
 15.. 
 
 25 
 
 1.00 
 
 6 
 
 16.. . 
 
 26 
 
 .70 
 .50 
 
 7 
 
 17.. 
 
 27 
 
 8 
 
 18.. 
 
 28 
 
 .43 
 
 9 
 
 19.... 
 
 29 
 
 .58 
 
 10 
 
 20.. 
 
 30 
 
 .54 
 
 
 
 31 
 
 .50 
 
 
 
 
252 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 17 at 2,700-foot level, near Kilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.15 
 .13 
 .1* 
 
 .15 
 .15 
 
 .15 
 .15 
 .f5 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 Ca) 
 \a) 
 
 (o) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 C°) 
 
 r°) 
 
 (a) 
 
 <a) 
 
 0.15 
 .10 
 .10 
 
 .10 
 
 (a) 
 
 (a) 
 .10 
 .65 
 
 1.00 
 1.30 
 1.50 
 1.00 
 .60 
 
 .40 
 .30 
 .20 
 .20 
 
 0.20 
 .20 
 .15 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .25 
 .40 
 .80 
 .40 
 
 .20 
 .10 
 .40 
 .60 
 .95 
 
 .80 
 .15 
 .60 
 .40 
 .20 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 3.00 
 
 1.00 
 .50 
 .15 
 .30 
 .30 
 
 .25 
 
 1.30 
 
 1.10 
 
 .90 
 
 .30 
 
 .25 
 .20 
 .20 
 .20 
 .55 
 
 .40 
 .30 
 .15 
 .20 
 .20 
 
 .35 
 .35 
 .15 
 .20 
 .30 
 
 .40 
 .30 
 .25 
 .20 
 .30 
 
 
 
 
 
 
 0,15 
 .15 
 
 0.20 
 
 .30 
 .60 
 .40 
 .30 
 
 .20 
 .15 
 .15 
 .25 
 .90 
 
 .80 
 .40 
 .30 
 .20 
 .30 
 
 .40 
 .40 
 .40 
 .40 
 .30 
 
 .25 
 .25 
 .30 
 .30 
 .30 
 
 .30 
 .15 
 .20 
 .20 
 .30 
 
 0.40 
 
 2 
 
 
 
 
 
 
 1.00 
 
 3 
 
 
 
 0.15 
 
 .15 
 .15 
 
 .15 
 
 
 
 .30 
 
 4 
 
 1.00 
 
 
 0.45 
 .15 
 
 ""."is" 
 
 .15 
 .15 
 .15 
 
 
 
 .25 
 
 5 
 
 0.15 
 
 .15 
 .40 
 .15 
 .15 
 
 
 .15 
 
 6 
 
 .60 
 
 
 .15 
 
 7 
 
 .15 
 
 8 
 
 
 
 
 .30 
 
 9 
 
 
 
 
 .15 
 
 10 
 
 
 
 .15 
 
 .15 
 
 11 
 
 
 
 
 
 .15 
 
 12 
 
 
 
 
 .is 
 
 .15 
 
 .15 
 
 .25 
 
 .15 
 
 13. 
 
 .15 
 
 
 .20 
 
 .15 
 
 14 
 
 
 
 .15 
 
 15 
 
 
 
 
 .15 
 
 
 
 .15 
 
 16 
 
 
 
 
 
 
 .15 
 
 17 
 
 
 0.15 
 
 
 
 
 
 .15 
 
 18 
 
 
 .15 
 
 ""."is" 
 
 .15 
 .15 
 
 .15 
 
 19 
 
 
 
 
 .15 
 
 20. 
 
 
 
 
 
 .20 
 
 21 
 
 
 
 
 
 
 
 .15 
 
 22 
 
 
 
 
 
 .15 
 
 
 .30 
 
 23 
 
 
 
 
 
 .40 
 
 24 
 
 
 
 .15 
 
 
 
 .30 
 .30 
 
 .30 
 
 .30 
 
 25 
 
 
 .30 
 
 .20 
 .20 
 .15 
 
 
 
 .25 
 
 26 
 
 .15 
 .15 
 
 
 
 .30 
 
 27 
 
 .15 
 
 
 .20 
 
 28. . . . 
 
 
 
 .15 
 
 29 
 
 
 
 
 
 .15 
 
 30 
 
 
 
 
 
 .25 
 
 
 .10 
 
 31 
 
 
 
 
 
 .10 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 Note. — Daily discharge determined from poorly denned rating curve. Discharge for days for which gage 
 heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 
 
 station No. 50. 
 
 Monthly discharge at station No. 17 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean dis- 
 charge in 
 second- 
 feet. 
 
 0.26 
 .33 
 
 .45 
 
 .13 
 
 .27 
 .38 
 .38 
 .30 
 
 Run-off 
 (total in 
 acre-feet). 
 
 16.30 
 19.80 
 27.90 
 
 7.99 
 15.50 
 23.40 
 22.60 
 18.40 
 
 Month. 
 
 1912— Continued 
 
 June , 
 
 July 
 
 August. 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean dis- 
 charge in 
 second- 
 feet. 
 
 0.20 
 .15 
 .15 
 .20 
 .60 
 .33 
 .22 
 
 Run-off 
 (total in 
 acre-feet). 
 
 .28 
 
 11.90 
 9.22 
 9.22 
 11.90 
 36.90 
 19.60 
 13.50 
 
 200. 00 
 
ISLAND OF HAWAII. 
 
 253 
 
 Discharge measurements at station No. 18 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.J 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug 15 
 
 Feet. 
 0.62 
 .45 
 
 Sec.-ft. 
 0.02 
 .04 
 
 NoV. 27 
 
 Feet. 
 0.53 
 .70 
 
 Sec.-ft. 
 0.02 
 
 Sept 26 
 
 Dec. 27 
 
 .13 
 
 
 
 
 Note.— Bed of stream of sand, gravel, and small cobbles; shifting. One channel at all stages. This 
 stream is tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 18 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.72 
 
 
 0.62, 
 .60 
 
 0.59 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.58 
 .55 
 .54 
 
 .56 
 .58 
 .62 
 .61 
 .59 
 
 .55 
 .52 
 .51 
 .50 
 .50 
 
 .50 
 
 "6." 42' 
 .42 
 
 0.75 
 .75 
 
 .74 
 
 0.76 
 .80 
 .81 
 
 .81 
 
 
 
 0.84 
 .80 
 
 .78 
 
 .76 
 
 ""75' 
 
 .74 
 .74 
 
 
 
 
 0.60 
 
 4 
 
 1.02 
 
 .86 
 
 '"6." 40* 
 ""."38' 
 
 .81 
 .74 
 
 "~~m 
 
 .75 
 
 .75 
 
 .72 
 
 "6."54" 
 
 .59 
 .61 
 .54 
 .52 
 
 .45 
 .50 
 .48 
 .49 
 .48 
 
 .49 
 
 .51 
 
 .49 
 
 .48 
 
 ""."45" 
 
 """."46" 
 
 .49 
 .53 
 .50 
 .52 
 
 ""."66" 
 
 '"""56" 
 
 .55 
 .66 
 
 ""."66" 
 
 .60 
 .58 
 
 .68 
 
 5 
 
 .62 
 
 6 
 
 .60 
 
 7 
 
 ""Mi" 
 
 .41 
 
 .40 
 
 .40 
 .38 
 .42 
 .41 
 .41 
 
 .41 
 .38 
 .36 
 .50 
 .92 
 
 .75 
 
 .61 
 
 8 
 
 
 
 .66 
 
 9 
 
 .79 
 
 .80 
 
 .80 
 .81 
 .97 
 .96 
 .81 
 
 .75 
 .89 
 
 '"".'89* 
 
 .82 
 .78 
 .80 
 
 
 
 
 .62 
 
 10 
 
 .86 
 
 .79 
 .75 
 
 "".12 
 .80 
 
 .78 
 
 '".'78' 
 .79 
 .81 
 
 .83 
 .81 
 
 .78 
 
 
 
 .61 
 
 11 
 
 
 
 .61 
 
 12 
 
 
 
 
 .72 
 
 .74 
 
 .61 
 
 13 
 
 .79 
 
 .68 
 
 ,79 
 
 .61 
 
 14 
 
 .62 
 
 15 
 
 
 .64 
 
 .78 
 
 .63- 
 .50 
 
 .64 
 
 16 
 
 
 .61 
 
 .64 
 
 17 
 
 .73 
 
 .70 
 
 
 .60 
 
 18 
 
 
 
 .56 
 
 .49 
 .50 
 .49 
 
 .48 
 .50 
 .48 
 .46 
 
 .45 
 .45 
 .45 
 .45 
 .65 
 
 .53 
 
 .54 
 
 "".ho 
 
 .60 
 .58 
 
 .60 
 
 "'."66" 
 
 .56 
 .56 
 .60 
 
 .60 
 
 19 
 
 .50 
 
 .50 
 
 .49 
 .49 
 .48 
 .48 
 
 .68 
 
 
 
 .62 
 
 20 
 
 
 
 
 
 21 
 
 
 .69 
 
 .75 
 
 "".*56" 
 .49 
 .50 
 .50 
 
 .49 
 .55 
 
 .62 
 
 22 
 
 
 23 
 
 .60 
 
 
 .70 
 .79 
 
 .72 
 .72 
 .72 
 .72 
 
 
 24 
 
 
 25 
 
 
 .77 
 
 .75 
 .75 
 
 .75 
 .74 
 
 .82 
 
 .85 
 .82 
 .80 
 
 .55 
 
 """."si" 
 
 .81 
 
 .80 
 .82 
 .79 
 
 .57 
 
 .54 
 .51 
 
 .65 
 
 26 
 
 
 
 
 27 
 
 .50 
 .49 
 .48 
 
 
 .70 
 
 28 
 
 .65 
 
 29 
 
 
 
 .61 
 
 
 
 
 
 ""."55" 
 
 .60 
 
 
 31 
 
 
 .49 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 18 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.17 
 .15 
 .13 
 .11 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.01 
 .01 
 .01 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .03 
 .01 
 .03 
 .05 
 
 .05 
 .02 
 .03 
 .05 
 .05 
 
 11.. 
 
 0.05 
 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .03 
 .05 
 .10 
 
 .44 
 
 .05 
 .42 
 .35 
 .44 
 .20 
 
 21 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .03 
 .03 
 .02 
 .01 
 .01 
 .01 
 
 0.05 
 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 05 
 
 2 
 
 12 
 
 22 
 
 .05 
 
 3 
 
 13.. . 
 
 23 
 
 05 
 
 4 
 
 14 
 
 24. 
 
 .05 
 
 5 
 
 15 
 
 25.. 
 
 .17 
 
 6 
 
 16 
 
 26.. 
 
 .10 
 
 7 
 
 17 
 
 27 . 
 
 .05 
 
 8 
 
 18 
 
 28.. 
 
 .05 
 
 9 
 
 19 
 
 29.. 
 
 .17 
 
 10.. 
 
 20 
 
 30.. 
 
 .16 
 
 
 
 31 
 
 .15 
 
 
 
 
254 
 
 WATEE EESOUECES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 18 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .25 
 .25 
 
 .25 
 .25 
 .55 
 
 .50 
 .25 
 
 .20 
 .40 
 .40 
 .40 
 .40 
 
 .30 
 .25 
 .25 
 .25 
 .25 
 
 .20 
 .20 
 .20 
 .20 
 .25 
 .50 
 
 0.30 
 .20 
 .20 
 .25 
 .25 
 
 .25 
 .20 
 .30 
 .40 
 .40 
 
 .25 
 .20 
 .20 
 .15 
 .25 
 
 .25 
 .25 
 .25 
 .25 
 .25 
 
 .30 
 .25 
 .15 
 .20 
 .30 
 
 .30 
 .30 
 .25 
 .20 
 .30 
 
 
 
 0.20 
 
 .20 
 .30 
 .25 
 .25 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .25 
 .25 
 .25 
 
 .25 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .15 
 .25 
 .20 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 0.15 
 .20 
 .20 
 .25 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .15 
 
 .15 
 .15 
 .20 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 
 0.05 
 .05 
 
 
 
 2 
 
 
 
 
 
 
 
 3 
 
 
 
 
 
 
 0.05 
 
 4 
 
 
 
 0.65 
 
 
 
 
 
 .15 
 
 5 ::: 
 
 
 
 
 0.05 
 
 .05 
 
 6 
 
 
 
 .40 
 
 
 
 
 .05 
 
 7 
 
 
 
 0.05 
 
 
 
 .05 
 
 8 
 
 0.05 
 .05 
 
 
 
 
 
 
 .10 
 
 9 . 
 
 
 
 
 
 .10 
 
 .05 
 
 10 
 
 
 
 
 
 .05 
 
 11 
 
 
 
 
 
 
 
 
 .05 
 
 12 
 
 
 
 
 
 
 
 .05 
 
 .05 
 
 .05 
 
 13 
 
 
 
 .25 
 
 0.15 
 
 
 
 .05 
 
 14 
 
 
 
 
 
 .05 
 
 15 
 
 
 
 
 .10 
 
 
 
 
 .10 
 
 
 
 
 
 
 .05 
 
 .10 
 
 17 
 
 
 
 .20 
 
 .15 
 
 
 
 .05 
 
 18 .. 
 
 
 
 
 
 .05 
 
 .05 
 
 19 
 
 
 
 .15 
 
 
 
 
 .05 
 
 20 
 
 
 0.45 
 
 
 
 .05 
 
 
 
 
 
 .15 
 
 
 
 .05 
 
 22 
 
 
 
 
 
 
 
 23 
 
 
 
 .05 
 
 
 
 
 .05 
 
 
 24 
 
 
 
 
 .05 
 .05 
 
 
 25 
 
 
 
 
 .25 
 
 .25 
 .30 
 .25 
 
 
 .10 
 
 26 
 
 
 
 
 27 
 
 
 
 
 
 
 .15 
 
 28 
 
 
 
 
 
 
 .10 
 
 29 
 
 
 
 
 
 
 .05 
 
 30 
 
 
 
 
 
 .10 
 
 
 .05 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which gage 
 heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 
 station No. 50. 
 
 Monthly discharge at station No. 18 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.06 
 .05 
 .11 
 
 0.1 
 
 .10 
 .28 
 .25 
 .10 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 3.52 
 
 2.74 
 7.05 
 
 .61 
 5.72 
 17.20 
 14.90 
 6.15 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.10 
 i20 
 .14 
 .02 
 .40 
 .05 
 .05 
 
 14 
 
 Run-off 
 (total in 
 acre-feet). 
 
 5.95 
 12.30 
 8.61 
 1.19 
 
 24.60 
 2.98 
 3.07 
 
 103.00 
 
ISLAND OP HAWAII. 
 
 255 
 
 Discharge measurements at station No. 25 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug 15 
 
 Feet. 
 0.30 
 .06 
 
 Sec.-ft. 
 0.22 
 .04 
 
 Nov.27 
 
 Feet. 
 0.38 
 .64 
 
 Sec.-ft. 
 0.19 
 
 
 Dec. 27 
 
 1.20 
 
 
 
 
 Note. — Bed of stream of sand and gravel; slightly shifting. One channel at all stages. This stream is 
 tributary to Wailuku River. 
 
 Daily gage height, in feet, at station No. 25 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 
 
 Date. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.01 
 
 
 
 0.62 
 
 
 2 
 
 
 
 
 
 
 
 
 
 
 
 3 
 
 0.35 
 .32 
 .32 
 
 .40 
 .41 
 
 .44 
 .42 
 .40 
 
 .35 
 .30 
 .28 
 .22 
 .15 
 
 .10 
 
 "(a)" 
 (a) 
 
 0.30 
 .26 
 .21 
 
 0.36 
 
 .42 
 .42 
 
 .41 
 
 
 
 . 0.54 
 
 .48 
 .42 
 
 .40 
 
 """35" 
 
 .34 
 
 .28 
 
 
 
 0.54 
 
 .48 
 .42 
 
 .40 
 
 ""*35" 
 
 .34 
 
 .28 
 
 ""."63" 
 
 "\*38" 
 .39 
 .66 
 
 0.60 
 
 4 
 
 0.84 
 .79 
 
 +6.'io" 
 
 +".15 
 
 .39 
 .22 
 
 ""28" 
 .20 
 .30 
 .30 
 
 " '0. 62' 
 
 .53 
 .56 
 .50 
 .43 
 
 .31 
 .38 
 .30 
 .30 
 .24 
 
 .34 
 
 .69 
 
 5 
 
 .54 
 
 6 
 
 .45 
 
 
 *"(a)"' 
 (a) 
 (a) 
 
 (a) 
 (a) 
 0.21 
 .10 
 
 (o) 
 
 (a) 
 
 (a) 
 
 (a) 
 .11 
 .49 
 
 .29 
 
 .45 
 
 8 
 
 
 
 .55 
 
 9 
 
 .34 
 
 .39 
 
 .39 
 .52 
 .65 
 .45 
 .39 
 
 .30 
 .62 
 
 '"'.hi' 
 
 .41 
 .30 
 .49 
 
 
 
 
 .49 
 
 10 
 
 .68 
 
 .61 
 .49 
 
 ""."39" 
 .42 
 
 .36 
 
 ""."■42" 
 
 .47 
 .46 
 
 .62 
 .62 
 .53 
 
 
 
 .37 
 
 11 
 
 
 
 .32 
 
 12 
 
 
 
 
 .15 
 .20 
 
 "■"."42" 
 ""."32" 
 
 .68 
 .49 
 .36 
 
 .57 
 
 .28 
 
 13 
 
 .51 
 
 .30 
 
 .42 
 
 .22 
 
 14 
 
 .24 
 
 15 
 
 
 .21 
 
 .32 
 
 .31 
 .20 
 
 .33 
 
 16 
 
 .36 
 
 17 
 
 .20 
 
 .30 
 
 
 .22 
 
 18 
 
 
 
 .30 
 
 .22 
 
 .18 
 .12 
 
 .15 
 .19 
 .12 
 .10 
 
 
 .68 
 
 .22 
 
 19 
 
 (a) 
 (a) 
 
 (a) - 
 (a) 
 (a) 
 (a) 
 
 .20 
 
 
 
 .28 
 
 20 
 
 
 
 
 .30 
 
 ""'."22" 
 .35 
 
 .63 
 
 .54 
 .50 
 .54 
 
 
 21 
 
 
 .25 
 
 .30 
 
 """."io- 
 
 .10 
 .20 
 .21 
 
 .18 
 .30 
 
 .40 
 
 22 
 
 
 23 
 
 .19 
 
 
 .22 
 .35 
 
 .26 
 .22 
 .21 
 
 
 24 
 
 
 25 
 
 
 .40 
 
 .31 
 .26 
 .20 
 (a) 
 .36 
 
 .58 
 
 .64 
 .63 
 .61 
 
 .11 
 
 ""."io" 
 
 .45 
 
 .40 
 
 .48 
 .40 
 
 .50 
 
 .42 
 .38 
 
 ""."49" 
 
 .52 
 
 26 
 
 
 
 .06 
 .06 
 .05 
 .04 
 .64 
 
 .26 
 .22 
 .21 
 .22 
 
 
 27 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 .61 
 
 28 
 
 .48 
 
 
 .40 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 25 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Date. 
 
 1. 
 2. 
 3. 
 4. 
 5. 
 
 6, 
 
 7. 
 8 
 9 
 10 
 
 Oct 
 
 Nov. 
 
 Dec. 
 
 2.20 
 
 (a) 
 
 (a) 
 
 1.50 
 
 (a) 
 
 (a) 
 
 1.00 
 
 (a) 
 
 (a) 
 
 .60 
 
 (a) 
 
 (a) 
 
 .45 
 
 0.30 
 
 (a) 
 
 .30 
 
 .45 
 
 (a) 
 
 .39 
 
 .60 
 
 (a) 
 
 .48 
 
 .80 
 
 (a) 
 
 .57 
 
 1.00 
 
 (a) 
 (a) 
 
 .64 
 
 2.06 
 
 Date. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 11 
 
 0.68 
 .60 
 .54 
 
 .48 
 .42 
 
 .39 
 .36 
 (a) 
 (a) 
 (a) 
 
 1.78 
 1.57 
 1.40 
 1.25 
 1.10 
 
 1.00 
 1.10 
 1.20 
 1.30 
 1.40 
 
 (a) 
 
 (a) 
 1.10 
 1.64 
 4.2p 
 
 1.64 
 3.96 
 3.64 
 4.12 
 2.36 
 
 12 
 
 13.... 
 
 14 
 
 15 
 
 16 
 
 17 
 
 18 
 
 19 
 
 20 
 
 
 Date. 
 
 21 
 22, 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Oct. Nov. Dec 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 1.50 
 1.64 
 1.78 
 1.92 
 2.06 
 
 1.20 
 1.00 
 1.05 
 1.00 
 
 1.57 
 .68 
 .54 
 .45 
 
 2.84 
 
 2.06 
 1.25 
 1.25 
 2.06 
 1.85 
 1.50 
 
 a Channel dry. 
 
256 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 25 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 0.20 
 
 (a) 
 
 0.15 
 
 1.00 
 
 1.00 
 
 0.05 
 
 0.30 
 
 0.10 
 
 0.80 
 
 0.90 
 
 1.10 
 
 .20 
 
 (a) 
 
 .15 
 
 .50 
 
 1.50 
 
 .05 
 
 .40 
 
 .10 
 
 1.00 
 
 .70 
 
 1.80 
 
 .20 
 
 (a) 
 
 .15 
 
 .25 
 
 2.00 
 
 .05 
 
 .75 
 
 1.00 
 
 2.00 
 
 .75 
 
 2.50 
 
 .20 
 
 (o) 
 
 .15 
 
 .35 
 
 2.50 
 
 .05 
 
 .55 
 
 .30 
 
 3.00 
 
 .55 
 
 1.30 
 
 .20 
 
 (a) 
 
 .10 
 
 .35 
 
 3.00 
 
 .05 
 
 .35 
 
 .10 
 
 1.10 
 
 .35 
 
 1.15 
 
 .30 
 
 (a) 
 
 .10 
 
 .35 
 
 2.10 
 
 .05 
 
 .30 
 
 .10 
 
 .70 
 
 .30 
 
 .30 
 
 .35 
 
 (a) 
 (a) 
 
 .15 
 
 3.00 
 
 1.00 
 
 .05 
 
 .20 
 
 .15 
 
 .85 
 
 .20 
 
 .25 
 
 .40 
 
 .20 
 
 2.50 
 
 .50 
 
 .05 
 
 .20 
 
 .10 
 
 .60 
 
 .20 
 
 .30 
 
 .35 
 
 (a) 
 (a) 
 
 .20 
 
 2.00 
 
 .40 
 
 .05 
 
 .20 
 
 .15 
 
 .40 
 
 .20 
 
 1.30 
 
 .30 
 
 .30 
 
 1.40 
 
 .30 
 
 .10 
 
 .15 
 
 .15 
 
 .20 
 
 .15 
 
 3.00 
 
 .20 
 
 (a) 
 
 .30 
 
 1.05 
 
 .40 
 
 .10 
 
 2.00 
 
 .10 
 
 .15 
 
 .20 
 
 2.50 
 
 .15 
 
 (a) 
 
 .70 
 
 .55 
 
 .50 
 
 .15 
 
 1.00 
 
 .05 
 
 .25 
 
 .30 
 
 1.40 
 
 .15 
 
 0.10 
 
 1.25 
 
 .40 
 
 .65 
 
 .15 
 
 .35 
 
 .10 
 
 .15 
 
 .35 
 
 .55 
 
 .10 
 
 .05 
 
 .45 
 
 .30 
 
 .50 
 
 .10 
 
 .50 
 
 .10 
 
 .15 
 
 .30 
 
 .25 
 
 .05 
 
 (a) 
 
 .30 
 
 .35 
 
 .40 
 
 .10 
 
 .20 
 
 .15 
 
 .10 
 
 .20 
 
 .20 
 
 .05 
 
 ffl 
 
 .15 
 
 .25 
 
 .20 
 
 .10 
 
 .10 
 
 .10 
 
 .20 
 
 .10 
 
 .90 
 
 .05 
 
 1.10 
 
 .30 
 
 .10 
 
 .15 
 
 .20 
 
 .10 
 
 .10 
 
 .50 
 
 1.20 
 
 .05 
 
 (a) 
 
 1.50 
 
 .35 
 
 .10 
 
 .15 
 
 .20 
 
 .15 
 
 .10 
 
 .20 
 
 1.40 
 
 (a) 
 
 .05 
 
 1.00 
 
 .50 
 
 .10 
 
 .10 
 
 .20 
 
 .20 
 
 .10 
 
 .30 
 
 1.20 
 
 (a) 
 
 .55 
 
 .65 
 
 .50 
 
 .10 
 
 .10 
 
 .20 
 
 .15 
 
 .05 
 
 .40 
 
 1.15 
 
 (a) 
 
 2.00 
 
 .35 
 
 1.10 
 
 .10 
 
 .10 
 
 .15 
 
 .10 
 
 .05 
 
 .15 
 
 .75 
 
 (a) 
 (a) 
 
 3.00 
 
 .15 
 
 1.10 
 
 .10 
 
 .20 
 
 .10 
 
 .05 
 
 .10 
 
 .20 
 
 .60 
 
 3.50 
 
 .55 
 
 .70 
 
 .10 
 
 .20 
 
 .10 
 
 .05 
 
 .05 
 
 .10 
 
 .75 
 
 (a) 
 
 2.50 
 
 .40 
 
 .80 
 
 .10 
 
 .30 
 
 .20 
 
 .10 
 
 .05 
 
 .20 
 
 .70 
 
 (a) 
 
 1.50 
 
 .30 
 
 .90 
 
 .05 
 
 .45 
 
 .20 
 
 .10 
 
 .05 
 
 .10 
 
 .60 
 
 (a) 
 
 1.00 
 
 .15 
 
 1.20 
 
 .05 
 
 .30 
 
 .15 
 
 .10 
 
 .05 
 
 .15 
 
 .35 
 
 (a) 
 (a) 
 (a) 
 
 .50 
 
 .15 
 
 1.15 
 
 .05 
 
 .55 
 
 .10 
 
 .15 
 
 .05 
 
 .10 
 
 .25 
 
 .30 
 
 .10 
 
 1.05 
 
 .05 
 
 .30 
 
 .10 
 
 .10 
 
 .05 
 
 .10 
 
 .70 
 
 .20 
 
 (a) 
 
 .50 
 
 .05 
 
 .30 
 
 .10 
 
 .10 
 
 .10 
 
 .10 
 
 .60 
 
 (a) 
 
 
 .25 
 
 .80 
 
 .05 
 
 .30 
 
 .10 
 
 .10 
 
 1.20 
 
 .10 
 
 .55 
 
 (a) 
 
 
 2.00 
 
 
 (a) 
 
 
 .10 
 
 .10 
 
 
 .10 
 
 
 Dec. 
 
 l 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 
 13 
 14 
 15 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 
 22, 
 23 
 24 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30 
 31. 
 
 1.50 
 2.50 
 1.00 
 1.45 
 .75 
 
 .45 
 .45 
 
 .80 
 .55 
 .25 
 
 .20 
 .15 
 .10 
 .10 
 .20 
 
 .25 
 .10 
 .10 
 .15 
 
 .40 
 
 .30 
 1.00 
 3.00 
 1.50 
 
 .70 
 
 1.00 
 1.05 
 .55 
 .30 
 .20 
 .10 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 25 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 N ovember 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 discharge 
 
 in second 
 
 feet. 
 
 0.37 
 1.71 
 1.25 
 
 .11 
 
 .53 
 .43 
 
 .85 
 .58 
 
 Run-off 
 (total in 
 acre-feet). 
 
 23.10 
 63.90 
 77.10 
 
 6.76 
 30.50 
 26.40 
 50.60 
 35.70 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 0.16 
 .31 
 .15 
 .46 
 
 .28 
 
 9.52 
 19.10 
 
 9.22 
 27.40 
 17.20 
 58.90 
 41.80 
 
 333.00 
 
 Discharge measurements at station No. 26 at 2,700-foot level, near Hilo, Hawaii) in 1912. 
 [E. O. Christiansen, hydrographer.J 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 
 Feet. 
 0.62 
 .61 
 
 Sec.-ft. 
 0.02 
 
 Nov. 27 
 
 Feet. 
 0.70 
 .90 
 
 Sec.-ft. 
 0.05 
 
 Sept. 26 , 
 
 Dec. 27 
 
 .31 
 
 
 
 
 
 Note.— Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 
 
ISLAND OF HAWAII. 
 
 257 
 
 Daily gage height, in feet, at station No. 26 at 2, 700-foot level, nearHilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.62 
 
 
 0.80 
 
 .75 
 
 0.68 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.75 
 
 .72 
 .71 
 
 .74 
 .75 
 .78 
 .75 
 
 .72 
 
 .70 
 .68 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 "if 
 
 .0.67 
 .65 
 .63 
 
 0.69 
 .74 
 .70 
 
 .72 
 
 
 
 0.79 
 .71 
 .70 
 
 .70 
 
 "".*68" 
 .67 
 .69 
 
 
 
 
 0.74 
 
 4 
 
 0.90 
 
 .94 
 
 " "6." 38* 
 "W 
 
 .79 
 
 .62 
 
 ""."63* 
 .60 
 .62 
 
 .62 
 
 "6." 75' 
 
 .71 
 .72 
 .70 
 .70 
 
 .68 
 .75 
 .70 
 .70 
 .69 
 
 .69 
 
 .62 
 .61 
 
 .60 
 
 "".Ql 
 
 ""."60" 
 
 .61 
 .75 
 .62 
 .64 
 
 ""*72" 
 
 """."68" 
 .68 
 .75 
 
 ""."79" 
 .72 
 .64 
 
 .84 
 
 5 : 
 
 .80 
 
 6 
 
 .79 
 
 7 
 
 (a 
 
 w 
 
 (a) 
 (a) 
 (a\ 
 (a) 
 (a) 
 
 (a) 
 {a) 
 (a) 
 0.60 
 .92 
 
 .65 
 
 .78 
 
 g 
 
 
 
 .82 
 
 9 
 
 ".66 
 .66 
 
 .70 
 .71 
 .79 
 .81 
 .71 
 
 .61 
 .83 
 
 "".'88" 
 
 .82 
 .71 
 .69 
 
 
 
 
 .78 
 
 10 
 
 .78 
 
 .75 
 .70 
 
 ""'.'68* 
 .71 
 
 .69 
 ....... 
 
 .74 
 
 .72 
 
 .79 
 .74 
 .74 
 
 
 
 .77 
 
 11 
 
 
 
 .75 
 
 12 
 
 
 
 
 .63 
 .61 
 
 .73 
 
 13 
 
 .89 
 
 .61 
 
 .75 
 
 .71 
 
 14 
 
 .72 
 
 15 
 
 
 .59 
 
 .69 
 
 .64 
 .60 
 
 .75 
 
 16 
 
 
 .74 
 
 .76 
 
 17 
 
 .70 
 
 .62 
 
 
 .71 
 
 18 
 
 
 
 .66 
 
 .65 
 .64 
 .62 
 
 .65 
 .70 
 .68 
 .65 
 
 .61 
 .61 
 .60 
 .68 
 .60 
 
 .74 
 
 .74 
 
 '"*.*75" 
 
 .72 
 
 .71 
 
 .75 
 
 ....... 
 
 .73 
 .70 
 
 .72 
 
 .71 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .68 
 
 
 
 .77 
 
 20 
 
 
 
 
 
 21 
 
 
 .60 
 
 .68 
 
 """."ei" 
 
 .61 
 .62 
 .60 
 
 .60 
 .65 
 
 .78 
 
 22 
 
 
 23 
 
 .60 
 
 
 .65 
 
 .72 
 
 .68 
 .64 
 (a) 
 .65 
 
 
 24 
 
 
 25. 
 
 
 .71 
 
 .64 
 .64 
 .64 
 .62 
 .71 
 
 .81 
 
 .89 
 .80 
 
 .78 
 
 .58 
 
 '"'.hi' 
 
 .70 
 
 .68 
 .71 
 .68 
 
 .72 
 
 .70 
 .70 
 
 .81 
 
 26 
 
 
 
 
 27 
 
 fa) 
 
 (a) 
 (a) 
 (a) 
 
 
 .88 
 
 28 
 
 .86 
 
 29 
 
 
 
 .81 
 
 30 
 
 
 
 
 """."72" 
 
 .72 
 
 
 31 
 
 
 .48 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 26 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 l 
 
 2 
 3 
 4 
 5 
 
 6 
 7 
 S 
 9 
 10 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 0.27 
 
 0.05 
 
 0.05 
 
 .15 
 
 .05 
 
 .05 
 
 .15 
 
 .05 
 
 .05 
 
 .15 
 
 .05 
 
 .05 
 
 .13 
 
 .05 
 
 .05 
 
 .13 
 
 .05 
 
 .05 
 
 .11 
 
 .05 
 
 .05 
 
 .10 
 
 .05 
 
 .05 
 
 .05 
 
 .10 
 
 .10 
 
 .05 
 
 .05 
 
 .05 
 
 Day. 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 0.05 
 
 0.05 
 
 0.10 
 
 .05 
 
 .05 
 
 .05 
 
 .05 
 
 .05 
 
 .13 
 
 .05 
 
 .05 
 
 .22 
 
 .05 
 
 .05 
 
 .81 
 
 .05 
 
 .05 
 
 .18 
 
 .05 
 
 .10 
 
 .52 
 
 .05 
 
 .10 
 
 .40 
 
 .05 
 
 .10 
 
 .45 
 
 .05 
 
 .11 
 
 .22 
 
 Day. 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Oct. 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 Nov. 
 
 0.12 
 .13 
 .14 
 .15 
 .16 
 
 .14 
 .10 
 .10 
 .05 
 
 .05 
 
 Dec. 
 
 0.13 
 .05 
 .05 
 .05 
 .40 
 
 .13 
 .10 
 .22 
 .15 
 .10 
 
 14694°— wsp 336—14- 
 
 -17 
 
258 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge at station No. 26 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October... 
 November. 
 December. 
 
 1912. 
 
 January.. 
 February. 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 4.72 
 4.78 
 10.50 
 
 1.84 
 11.50 
 4.92 
 4.76 
 4.92 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year. 
 
 discharge 
 in second- 
 feet. 
 
 0.03 
 .05 
 .05 
 .05 
 .20 
 .07 
 .10 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.79 
 3.07 
 3.07 
 
 12^30 
 4.17 
 6.15 
 
 61.50 
 
 Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from 
 rainfall record at camp near station No. 50. 
 
 Discharge measurements at station No. 27 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.J 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage, 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 15 
 
 Feet. 
 1.61 
 1.26 
 1.80 
 
 Sec-ft. 
 4.26 
 .86 
 6.45 
 
 Nov.27 
 
 Feet. 
 1.64 
 2.00 
 
 Sec-ft. 
 3.21 
 
 Sept. 27 
 
 Dec. 27 
 
 12.7 
 
 Nov. 22 
 
 
 
 
 
 Note. — Bed of stream of cobbles and bowlders. Section near gage is rough; probably permanent. 
 One channel at all stages. 
 
 Daily gage height, in feet, at station No. 27 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. . 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 1.28 
 
 
 1.71 
 1.62 
 
 2.08 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 1.55 
 1.50 
 1.45 
 
 1.42 
 
 1.42 
 1.42 
 1.41 
 1.38 
 
 1.35 
 1.32 
 1.28 
 1.25 
 1.25 
 
 1.21 
 
 "*6.'92* 
 .92 
 
 1.62 
 1.56 
 1.49 
 
 1.71 
 1.80 
 1.84 
 
 1.86 
 
 
 
 1.90 
 1.80 
 1.74 
 
 1.68 
 
 "i.'52* 
 1.48 
 1.42 
 
 
 
 
 1.96 
 
 4 
 
 2.20 
 1.98 
 
 "i.'oo* 
 
 "".92 
 
 1.56 
 1.43 
 
 "i'.te 
 1.34 
 1.38 
 1.34 
 
 "2.'08' 
 
 1.94 
 1.97 
 1.78 
 1.69 
 
 1.53 
 1.85 
 1.69 
 1.48 
 1.39 
 
 1.58 
 
 1.40 
 1.31 
 
 1.26 
 
 " *i.*27" 
 
 " "i.34" 
 
 1.33 
 1.84 
 1.52 
 1.55 
 
 ""2*6i" 
 
 "i.'72* 
 1.69 
 2.05 
 
 *"i. r 98" 
 2.00 
 1.68 
 
 1.98 
 
 5 
 
 1.82 
 
 6 
 
 1.72 
 
 7 
 
 "".'9*6' 
 .90 
 
 .88 
 
 .88 
 
 .85 
 
 1.25 
 
 1.20 
 
 1.05 
 
 1.00 
 
 .95 
 
 .89 
 
 1.25 
 
 1.87 
 
 1.45 
 
 1.77 
 
 g 
 
 
 
 1.95 
 
 9 -. 
 
 1.50 
 1.52 
 
 1.65 
 1.98 
 2.21 
 2.21 
 1.95 
 
 1.66 
 
 1.78 
 
 "i.'sjo" 
 
 1.82 
 1.71 
 1.79 
 
 
 
 
 1.81 
 
 10... 
 
 2.26 
 
 2.08 
 1.89 
 
 "L74* 
 1.80 
 
 1.71 
 
 "i.*82* 
 1.85 
 1.82 
 
 1.99 
 1.95 
 1.81 
 
 
 
 1.72 
 
 11 
 
 
 
 1.64 
 
 12 
 
 
 
 
 1.31 
 1.38 
 
 1.59 
 
 13 
 
 1.59 
 
 1.20 
 
 1.79 
 
 1.54 
 
 14 
 
 1.54 
 
 15 
 
 
 1.16 
 
 1.49 
 
 1.60 
 1.41 
 
 1.63 
 
 16 
 
 
 1.92 
 
 1.78 
 
 17 
 
 1.42 
 
 1.30 
 
 
 1.41 
 
 18 
 
 
 
 1.52 
 
 1.51 
 1.44 
 1.29 
 
 1.04 
 1.42 
 1.34 
 1.32 
 
 1.25 
 
 1.24 
 1.22 
 1.24 
 1.84 
 
 1.88 
 2.02 
 
 "i'iiT 
 1.88 
 
 1.75 
 
 2.02 
 
 " "2. 66" 
 
 1.86 
 
 1.81 
 1.94 
 
 1.55 
 
 19 
 
 1.18 
 1.15 
 
 1.10 
 1.10 
 1.09 
 1.08 
 
 1.41 
 
 
 
 1.70 
 
 20 .. 
 
 
 
 
 
 21 
 
 
 1.22 
 
 1.30 
 
 ■*L25" 
 1.22 
 1.46 
 1.37 
 
 1.34 
 1.45 
 
 1.75 
 
 22 
 
 
 23 
 
 1.37 
 
 
 1.29 
 1.39 
 
 1.32 
 1.35 
 1.35 
 1.39 
 
 
 24 
 
 
 25 
 
 
 1.72 
 
 1.55 
 1.47 
 1.42 
 1.39 
 1.44 
 
 1.89 
 
 2.14 
 2.12 
 2.05 
 
 1.30 
 "*i."23" 
 
 1.42 
 
 1.40 
 1.49 
 1.41 
 
 1.81 
 
 1.70 
 1.64 
 
 1.92 
 
 26 .. 
 
 
 
 
 27 
 
 i. 66 
 
 .98 
 .95 
 .91 
 
 
 2.04 
 
 28 
 
 1.86 
 
 29 
 
 
 
 1.82 
 
 30 .. 
 
 
 
 
 '"2."66" 
 
 1.80 
 
 
 31 
 
 
 1.16 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 259 
 
 Daily discharge, in second-feet, at station No. 27 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Pay. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 15.0 
 15.5 
 17.0 
 18.0 
 20.1 
 
 15.0 
 11.0 
 9.8 
 .9.0 
 9.6 
 
 6.0 
 6.0 
 5.8 
 5.7 
 5.5 
 
 1.0 
 1.0 
 1.0 
 1.6 
 3.2 
 
 3.7 
 
 4.2 
 4.9 
 8.4 
 6.2 
 
 7.9 
 9.8 
 12.2 
 15.0 
 18.0 
 
 2.1 
 2.0 
 
 1.7 
 1.6 
 1.7 
 
 1.0 
 1.4 
 1.4 
 2.2 
 1.7 
 
 . 1.9 
 
 1.6 
 
 11.0 
 
 18.0 
 
 77.0 
 
 16 
 
 
 5.3 
 5.3 
 
 3.2 
 2.8 
 2.5 
 
 2.2 
 2.0 
 1.9 
 1.7 
 1.6 
 
 1.5 
 1.3 
 1.2 
 1.0 
 .9 
 1.0 
 
 6.2 
 7.0 
 
 7.9 
 8.7 
 9.8 
 
 11.4 
 13.0 
 15.0 
 17.0 
 19.4 
 
 9.0 
 5.3 
 4.2 
 2.5 
 2.2 
 
 39.4 
 
 2 
 
 
 17 
 
 
 61.0 
 
 3 
 
 
 18 
 
 
 61.0 
 
 4 
 
 
 19 
 
 
 77.0 
 
 
 
 20 
 
 
 42.6 
 
 6 
 
 
 21 
 
 
 18.0 
 
 7 
 
 
 22 
 
 
 7.6 
 
 8 
 
 
 23 
 
 
 4.8 
 
 9 
 
 
 24 
 
 
 3 
 
 10 
 
 
 25 
 
 
 21.5 
 
 11 
 
 
 26 
 
 
 8.4 
 
 12 . 
 
 
 27 
 
 
 6.2 
 
 
 
 28 
 
 14.0 
 13.0 
 14.0 
 
 5.3 
 
 14 
 
 
 29 
 
 9.8 
 
 15 :.... 
 
 
 30 
 
 31 
 
 9.0 
 
 
 
 7.6 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 27 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 
 17 
 IS 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 2.80 
 2.80 
 2.80 
 2.30 
 2.00 
 
 1.70 
 1.70 
 1.70 
 1.70 
 1.50 
 
 1.40 
 
 1.20 
 
 1.00 
 
 .90 
 
 .90 
 
 .70 
 .70 
 .60 
 .60 
 .50 
 
 .40 
 .40 
 .40 
 .40 
 .30 
 
 .30 
 .20 
 .20 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .90 
 .70 
 .30 
 
 .20 
 .10 
 .10 
 .90 
 8.20 
 
 15.00 
 20.00 
 25.00 
 30.00 
 20.00 
 
 10.00 
 5.00 
 8.00 
 
 10.00 
 
 5.00 
 4.00 
 3.40 
 2.80 
 2.20 
 
 2.10 
 2.00 
 2.20 
 2.30 
 2.50 
 
 3.80 
 12.00 
 26.00 
 26.00 
 11.00 
 
 3.90 
 5.80 
 10.00 
 10.00 
 9.00 
 
 6.80 
 4.60 
 6.00 
 5.00 
 4.80 
 
 2.70 
 2.10 
 1.70 
 1.50 
 1.90 
 25.00 
 
 15.00 
 9.00 
 4.60 
 6.20 
 7.30 
 
 7.90 
 30.00 
 30.00 
 30.00 
 30.00 
 
 17.00 
 8.70 
 9.00 
 5.10 
 6.20 
 
 4.60 
 10.00 
 
 13.00 
 11.00 
 
 6.50 
 10.00 
 
 8.70 
 
 21.00 
 19.00 
 15.00 
 10.00 
 10.00 
 
 10.00 
 15.00 
 20.00 
 25.00 
 30.00 
 
 12.00 
 8.00 
 5.00 
 5.00 
 5.00 
 
 5.00 
 4.00 
 3.10 
 3.00 
 4.00 
 
 3.00 
 1.70 
 2.00 
 1.70 
 2.00 
 
 1.50 
 1.00 
 1.40 
 1.50 
 1.10 
 
 .90 
 
 0.50 
 .40 
 .30 
 .20 
 .20 
 
 .10 
 .10 
 .10 
 .20 
 .30 
 
 .40 
 .50 
 .70 
 
 1.10 
 
 1.00 
 
 .90 
 
 1.00 
 1.20 
 1.40 
 1.70 
 
 1.60 
 2.20 
 1.70 
 1.50 
 1.50 
 
 3.00 
 5.00 
 9.00 
 6.20 
 5.10 
 
 4.20 
 3.40 
 2.50 
 2.20 
 1.70 
 
 15.00 
 10.00 
 6.00 
 8.00 
 2.20 
 
 2.00 
 1.50 
 1.50 
 1.30 
 1.20 
 
 1.10 
 
 1.10 
 1.10 
 1.60 
 1.40 
 
 1.20 
 1.30 
 1.30 
 1.60 
 l.EO 
 1.00 
 
 1.00 
 1.00 
 5.00 
 2.80 
 1.80 
 
 1.80 
 1.90 
 1.30 
 1.50 
 1.30 
 
 1.20 
 1.10 
 1.50 
 3.00 
 3.20 
 
 1.70 
 2.00 
 2.50 
 3.00 
 2.00 
 
 1.50 
 
 .90 
 
 .80 
 
 2.00 
 
 1.40 
 
 1.30 
 2.00 
 2.00 
 1.50 
 1.50 
 1.50 
 
 5.00 
 12.00 
 20.00 
 30.00 
 17.00 
 
 11.00 
 12.00 
 5.80 
 4.30 
 3.00 
 
 2.60 
 7.60 
 4.30 
 2.20 
 1.50 
 
 3.00 
 2.70 
 2.40 
 1.90 
 1.10 
 
 .90 
 7.30 
 
 4.60 
 3.40 
 3.00 
 1.60 
 1.20 
 
 .90 
 
 .90 
 
 1.00 
 
 1.00 
 
 1.30 
 
 1.20 
 7.30 
 2.50 
 2.80 
 3.00 
 
 2.00 
 20.00 
 
 8.40 
 14.00 
 12.00 
 
 12.00 
 20.00 
 30.00 
 24.00 
 8.40 
 
 5.30 
 30.00 
 25.00 
 20.00 
 15.00 
 13.00 
 
 17.00 
 15. 00 
 25.00 
 20.00 
 14.00 
 
 5.00 
 4.80 
 4.30 
 16.00 
 25.00 
 
 20.00 
 12.00 
 13.00 
 4.20 
 3.00 
 
 9.80 
 20.00 
 14.00 
 15.00 
 13.00 
 
 7.90 
 6.50 
 11.00 
 8.00 
 6.50 
 
 4.40 
 3.70 
 10.00 
 8.00 
 6.20 
 
 20.00 
 30.00 
 11.00 
 12.00 
 
 4.80 
 5.70 
 11.00 
 6.50 
 4.80 
 
 3.70 
 3.10 
 2.70 
 2.70 
 3.60 
 
 5.80 
 1.70 
 2.80 
 4.40 
 10.00 
 
 5.30 
 15.00 
 30.00 
 20.00 
 
 9.80 
 
 20.00 
 15.00 
 7.90 
 6.80 
 5.00 
 5.00 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No .50. 
 
260 WATER RESOURCES OF HAWAII, 1912. 
 
 Monthly discharge at station No. 27 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December.. . 
 
 1912, 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.66 
 .79 
 1.64 
 
 1.05 
 5.37 
 6.71 
 12.50 
 5.66 
 
 Run-oft 
 (total in 
 acre-feet). 
 
 40.70 
 47.10 
 101. 00 
 
 64.60 
 309.00 
 413. 00 
 744. 00 
 348. 00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.81 
 3.39 
 1.84 
 5.52 
 9.51 
 11.40 
 9.45 
 
 6.09 
 
 48.20 
 208.00 
 113. 00 
 328. 00 
 585.00 
 678. 00 
 581. 00 
 
 4,420.00 
 
 Discharge measurements at station No. 28 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrograp her.) 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 15 
 
 Feet. 
 1.21 
 .68 
 1.58 
 
 Sec.-ft. 
 8.27 
 2.01 
 16.2 
 
 Nov. 27 
 
 Feet. 
 1.30 
 1.98 
 
 Sec.-ft. 
 9 85 
 
 Sept. 26 
 
 Dec. 27 — 
 
 42 9 
 
 Nov. 22 
 
 
 
 
 
 Note. — Bed of stream of cobbles and bowlders; section near gage is rough; probably permanent. One 
 channel at all stages. 
 
 Daily gage height, in feet, at station No. 28 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 * [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.69 
 
 
 1.70 
 
 1.46 
 
 2.14 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 1.12 
 1.08 
 1.02 
 
 1.01 
 1.08 
 1.12 
 1.10 
 1.08 
 
 .85 
 .80 
 .75 
 .72 
 .70 
 
 .68 
 
 "6.'i3" 
 .10 
 
 1.29 
 1.12 
 1.02 
 
 1.69 
 1.79 
 1.81 
 
 1.83 
 
 
 
 1.91 
 1.66 
 1.48 
 
 1.36 
 
 "i."i9" 
 
 1.11 
 
 .97 
 
 
 
 
 1.88 
 
 4 
 
 2.25 
 1.95 
 
 "6"6i" 
 
 ""."60" 
 
 1.62 
 1.10 
 
 ""'."99" 
 .85 
 .98 
 .94 
 
 *2."i2' 
 
 1.98 
 2.06 
 1.69 
 1.59 
 
 1.34 
 1.86 
 1.58 
 1.34 
 1.04 
 
 1.32 
 
 1.01 
 
 .86 
 
 .78 
 
 "."'."65' 
 
 """."80" 
 
 .80 
 1.92 
 1.48 
 1.40 
 
 "*2."20" 
 
 *"i.52" 
 
 1.46 
 2.15 
 
 "'2.' 15' 
 
 1.S8 
 1.52 
 1.20 
 
 1.85 
 
 1.81 
 
 5 
 
 1.59 
 
 6 
 
 1.49 
 
 7 
 
 ""."05" 
 .05 
 .04 
 
 .04 
 .02 
 .51 
 .43 
 .31 
 
 .26 
 .18 
 .09 
 .50 
 1.48 
 
 .95 
 
 1.61 
 
 8 
 
 
 
 1.82 
 
 9 
 
 1.08 
 1.15 
 
 L99 
 2.32 
 2.30 
 1.92 
 
 1.64 
 1.77 
 
 l!50 
 1.78 
 
 
 
 
 1.67 
 
 10 
 
 2.26 
 
 2.10 
 1.83 
 
 "1*55" 
 1.64 
 
 1.54 
 
 "i.'68" 
 1.73 
 1.70 
 
 1.99 
 1.85 
 1.68 
 
 
 
 1.49 
 
 11 
 
 
 
 1.36 
 
 12 
 
 
 
 
 .80 
 .90 
 
 1.26 
 
 13 
 
 1.30 
 
 .90 
 
 1.69 
 
 1.18 
 
 14 
 
 1.18 
 
 15 
 
 
 .86 
 
 1.14 
 
 1.22 
 
 .96 
 
 1.28 
 
 16 
 
 1.47 
 
 17 
 
 1.00 
 
 .88 
 
 
 1.26 
 
 18 
 
 
 
 1.24 
 
 1.11 
 .99 
 .91 
 
 .84 
 .99 
 .81 
 
 .78 
 
 .67 
 .64 
 .61 
 .60 
 1.85 
 
 1.82 
 2.05 
 2.80 
 
 ""2.' 32" 
 1.80 
 
 1.68 
 
 1.90 
 
 ""L"92" 
 
 1.72 
 1.62 
 1.82 
 
 1.13 
 
 19. . 
 
 .62 
 .52 
 
 .46 
 .44 
 .42 
 .41 
 
 .98 
 
 
 
 1.45 
 
 20 
 
 
 
 
 2.68 
 
 21 
 
 
 .84 
 
 .99 
 
 ""."78" 
 
 .64 
 
 1.00 
 
 .71 
 
 .68 
 1.19 
 
 1.54 
 
 22 .. 
 
 
 23 
 
 .81 
 
 
 .89 
 1.34 
 
 .'85 
 
 1.02 
 
 .95 
 
 .92 
 
 
 24 
 
 
 25 
 
 
 1.68 
 
 1.24 
 1.07 
 .94 
 .82 
 1.00 
 3.41 
 
 1.93 
 
 2.22 
 2.13 
 2.06 
 
 .79 
 
 '"."78" 
 
 .99 
 
 .90 
 
 1.20 
 
 .93 
 
 1.54 
 
 1.40 
 1.31 
 
 1.90 
 
 26 
 
 
 
 
 27 
 
 .40 
 .40 
 .39 
 .38 
 
 
 2.04 
 
 28.. 
 
 1.74 
 
 29 
 
 
 
 1.64 
 
 30 
 
 
 
 
 "*2."6i" 
 
 i.88 
 
 
 31... 
 
 
 .69 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 261 
 
 Daily discharge, in second-feet, at station No. 28 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 42.0 
 49.0 
 49.0 
 49.0 
 49.0 
 
 38.5 
 28.0 
 25.0 
 22,2 
 19.8 
 
 17.0 
 16.2 
 15.4 
 14.7 
 14.1 
 
 1.7 
 
 1.7 
 1.7 
 3.0 
 6.0 
 
 8.8 
 li.6 
 16.2 
 22.2 
 14.4 
 
 19.8 
 26.0 
 35.0 
 44.8 
 57.0 
 
 6.2 
 
 4.8 
 4.2 
 4.5 
 4.8 
 
 3.8 
 2.8 
 3.0 
 6.4 
 
 5.8 
 
 6.0 
 
 5.5 
 
 24.0 
 
 45.5 
 
 122.0 
 
 16 
 
 
 13.8 
 13.5 
 7.0 
 6.0 
 5.5 
 
 5.0 
 4.5 
 4.0 
 3.5 
 3.0 
 
 2.6 
 2.1 
 1.9 
 1.7 
 1.4 
 1.7 
 
 17.0 
 19.8 
 22.2 
 25.0 
 28.0 
 
 32.2 
 
 36.4 
 40.6 
 44.8 
 49.0 
 
 23.0 
 15.0 
 13.5 
 11.0 
 
 8.8 
 
 61.0 
 
 2 
 
 
 17... 
 
 
 79.4 
 
 3 . 
 
 
 18 
 
 
 81.0 
 
 4 
 
 
 19 
 
 
 99.8 
 
 5 
 
 
 20 
 
 
 69.0 
 
 6 
 
 
 21 
 
 
 33.6 
 
 7 
 
 
 22 
 
 
 28.0 
 
 8 
 
 
 23 
 
 
 25.5 
 
 9 
 
 
 24 
 
 
 23.0 
 
 10 
 
 
 25 
 
 
 58.6 
 
 11 .. 
 
 
 26 
 
 
 42.0 
 
 12 
 
 
 27 
 
 
 35.0 
 
 13 
 
 
 28 
 
 42.0 
 28.0 
 35.0 
 
 27.0 
 
 
 
 29 
 
 42.0 
 
 15 
 
 
 30 
 
 38.5 
 
 
 
 31 
 
 35.0 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 21 
 
 for 1912. 
 
 at 2,700-foot -level, near Hilo, Hawaii, 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 7 
 
 8 
 9 
 10 
 
 11 
 
 12 
 13 
 14 
 15 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 6.00 
 6.00 
 6.40 
 5.80 
 5.20 
 
 5.10 
 
 5.80 
 6.40 
 6.00 
 5.80 
 
 3.50 
 3.00 
 2.60 
 2.40 
 2.20 
 
 2.10 
 2.00 
 1.90 
 1.80 
 1.30 
 
 1.00 
 1.00 
 .90 
 
 0.20 
 .20 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 1.20 
 .90 
 .40 
 
 .30 
 
 .20 
 
 .10 
 
 1.20 
 
 14.00 
 
 100.00 
 140. 00 
 170. 00 
 100. 00 
 40.00 
 
 30.00 
 20.00 
 10.00 
 10.00 
 
 10.00 
 10.00 
 9.80 
 6.40 
 5.20 
 
 5.00 
 4.50 
 5.00 
 .5. 80 
 7.00 
 
 22.60 
 41.30 
 66.60 
 65.00 
 36.40 
 
 20.60 
 26.50 
 29.00 
 31.50 
 34.30 
 
 22.60 
 15.00 
 27.00 
 30.00 
 22.20 
 
 5.70 
 4.40 
 3.20 
 5.00 
 58.00 
 
 90.00 
 50.00 
 22.60 
 27.00 
 28.70 
 
 30.10 
 L60. 00 
 150. 00 
 140. 00 
 
 61.80 
 
 49.00 
 30.10 
 24.00 
 17.00 
 20.60 
 
 16.60 
 30.00 
 22.20 
 24.50 
 23.00 
 
 41.30 
 31.50 
 22.20 
 40.00 
 37.10 
 
 58.60 
 51.40 
 46.20 
 30.00 
 20.00 
 
 30.00 
 40.00 
 50.00 
 61.00 
 100. 00 
 
 38.50 
 20.00 
 10.00 
 10.00 
 10.00 
 
 10.00 
 10.00 
 10.00 
 10.00 
 5.00 
 
 5.00 
 5.00 
 5.00 
 4.80 
 4.00 
 
 4.00 
 4.00 
 3.10 
 3.00 
 2.90 
 
 2.80 
 2.80 
 2.60 
 2.40 
 2.20 
 2.10 
 
 2.00 
 2.00 
 1.90 
 1.90 
 1.80 
 
 70 
 
 1 
 
 1. 
 
 1.80 
 
 1.90 
 
 2.00 
 
 2.50 
 3.00 
 4.00 
 3.80 
 3.60 
 
 3.70 
 3.80 
 3.70 
 3.60 
 3.50 
 
 3.40 
 3.80 
 4.20 
 4.60 
 4.90 
 
 4.00 
 8.00 
 4.30 
 4.00 
 4.00 
 
 4.00 
 10.00 
 35.70 
 21.40 
 14.40 
 
 11.20 
 9.50 
 7.80 
 6.20 
 4.70 
 
 150. 00 
 80.00 
 22.60 
 50.00 
 6.80 
 
 5.00 
 5.00 
 5.00 
 5.00 
 5.00 
 
 4.90 
 4.40 
 3.90 
 10.80 
 6.00 
 
 3.50 
 5.20 
 4.50 
 4.20 
 3.50 
 2.80 
 
 2.10 
 40.00 
 25.00 
 19.80 
 
 6.00 
 
 5.40 
 4.90 
 3.50 
 4.80 
 4.40 
 
 3.70 
 
 3.00 
 4.00 
 4.50 
 8.40 
 
 4.60 
 6.00 
 8.80 
 15.00 
 10.00 
 
 6.40 
 2.80 
 1.90 
 5.00 
 2.30 
 
 2.10 
 
 7.80 
 6.00 
 5.00 
 4.00 
 5.00 
 
 50.00 
 60.00 
 100. 00 
 140. 00 
 51.00 
 
 41.00 
 46.00 
 23.00 
 19.00 
 15.00 
 
 11.00 
 32.00 
 18.00 
 11.00 
 5.40 
 
 10.00 
 8.00 
 6.20 
 4.90 
 4.19 
 
 3.40 
 
 4.90 
 3.10 
 2.80 
 
 2.00 
 1.90 
 1.70 
 1.70 
 32.00 
 
 23.00 
 14. 00 
 10.00 
 5.10 
 3.60 
 
 2.80 
 2.40 
 1.90 
 2.40 
 3.00 
 
 3.00 
 36.00 
 14.00 
 12.00 
 12. 00 
 
 10.00 
 60.00 
 29.00 
 45.00 
 107.00 
 
 120.00 
 150. 00 
 170. 00 
 67.00 
 28.00 
 
 22.20 
 170.00 
 150.00 
 150.00 
 100. 00 
 
 43.00 
 
 52.00 
 90.00 
 120. 00 
 70.00 
 57.00 
 
 36.00 
 16.00 
 14.00 
 53.00 
 150.00 
 
 120. 00 
 53.00 
 34.00 
 16.00 
 8.00 
 
 32.00 
 40.00 
 35.00 
 40.00 
 36.00 
 
 24.00 
 20.00 
 29.00 
 23.00 
 17.00 
 
 12.00 
 10.00 
 50.00 
 40.00 
 34.00 
 
 70.00 
 100.00 
 34.00 
 29.00 
 19.00 
 
 15.00 
 19.00 
 29.00 
 22.00 
 15.00 
 
 11.00 
 9.20 
 7.60 
 7.60 
 9.60 
 
 14.00 
 9.20 
 6.60 
 13.00 
 96.00 
 
 17.00 
 100.00 
 150.00 
 100.00 
 
 35.00 
 
 60.00 
 45.00 
 25.00 
 21.00 
 10.00 
 10.00 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
262 
 
 Monthly discharge at station No. 28 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 discharge 
 in second- 
 feet. 
 
 17.00 
 21.90 
 33.20 
 
 2.92 
 17.60 
 24.30 
 46.50 
 15.20 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 1,040 
 1,300 
 2,020 
 
 180 
 1,010 
 1,490 
 2,770 
 
 935 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 3.31 
 16.50 
 
 7.49 
 23.70 
 50.50 
 44.40 
 35.60 
 
 24.00 
 
 197 
 1,010 
 
 461 
 1,410 
 3,110 
 2,640 
 2,190 
 
 17,400 
 
 Discharge measurements at station No. 29 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 15 
 Sept. 26 
 
 E. O. Christiansen. 
 do 
 
 Feet. 
 0.34 
 
 Sec.-ft. 
 
 (o) 
 
 Nov. 22 
 Dec. 12 
 
 E. O. Christiansen. 
 do 
 
 Feet. 
 0.45 
 .36 
 
 Sec.-ft. 
 
 
 
 a Channel dry. 
 Note. — Bed of stream of silt, sand, and gravel. Shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 29 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.30 
 
 
 0.53 
 
 .40 
 
 0.52 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.42 
 .41 
 .40 
 
 .42 
 .44 
 .48 
 .45 
 .42 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 "(«)" 
 
 (a) 
 
 0.33 
 .25 
 .20 
 
 0.31 
 .43 
 .40 
 
 .39 
 
 
 
 0.51 
 .40 
 .40 
 
 .38 
 
 "".'24" 
 .15 
 .25 
 
 
 
 
 0.49 
 
 4 
 
 1.15 
 
 .84 
 
 "la)" 
 
 .50 
 .34 
 
 """."37" 
 
 .32 
 .36 
 .35 
 
 "0. 48* 
 
 .49 
 .50 
 .43 
 .44 
 
 .38 
 .40 
 .35 
 .32 
 .30 
 
 .35 
 
 .30 
 .22 
 
 '"".'51* 
 
 .50 
 
 5 
 
 .42 
 
 6 
 
 .41 
 
 7 
 
 "W 
 
 (a) 
 (a) 
 
 (a) 
 
 (a 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a 
 (a) 
 (a) 
 0.71 
 
 .30 
 
 ""."24' 
 
 .32 
 .53 
 .34 
 .41 
 
 .42 
 
 .42 
 .64 
 
 "".'52" 
 
 .52 
 .42 
 .42 
 
 .54 
 
 .41 
 
 8. 
 
 
 
 .50 
 
 9. 
 
 .31 
 .31 
 
 .32 
 .54 
 .59 
 .56 
 
 .44 
 
 .40 
 .66 
 
 '"".'49' 
 
 .40 
 .35 
 .41 
 
 
 
 
 .42 
 
 10 
 
 .49 
 
 .49 
 .40 
 
 ""."46" 
 
 .45 
 
 .39 
 
 "\*40* 
 .41 
 .40 
 
 .56 
 .55 
 .40 
 
 
 
 .41 
 
 11 
 
 
 
 .38 
 
 12 
 
 
 
 
 .31 
 
 .42 
 
 .37 
 
 13 
 
 .49 
 
 0.28 
 
 .44 
 
 .34 
 
 14 
 
 .40 
 
 15 
 
 
 .25 
 
 .15 
 
 .40 
 .32 
 
 .44 
 
 16 
 
 .39 
 
 17 
 
 .12 
 
 .26 
 
 
 .36 
 
 18 
 
 
 
 .42 
 
 .34 
 .30 
 
 .30 
 
 .32 
 .34 
 .32 
 .32 
 
 .19 
 .28 
 
 fa) 
 
 (a) 
 .49 
 
 .46 
 .49 
 .60 
 
 ""."56" 
 
 .44 
 
 .46 
 
 .55 
 
 ""."51" 
 
 .50 
 .42 
 .49 
 
 .38 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 
 
 .46 
 
 20 
 
 
 
 
 .51 
 
 21 
 
 
 .22 
 
 .15 
 
 "".SI 
 
 .32 
 .32 
 .30 
 
 .30 
 .41 
 
 .42 
 
 22 
 
 
 23 
 
 (a) 
 
 
 .15 
 
 .40 
 
 '.40 
 .35 
 .30 
 .32 
 
 
 24 
 
 
 25 
 
 
 .41 
 
 .39 
 .30 
 .13 
 
 .49 
 
 .53 
 .72 
 .94 
 
 (a) 
 
 .35 
 
 .34 
 .40 
 .32 
 
 .43 
 
 .40 
 .40 
 
 .46 
 
 26 
 
 
 
 
 27 
 
 (a) 
 (a) 
 (a) 
 (o) 
 
 
 .52 
 
 28.... 
 
 .46 
 
 29 
 
 
 
 .45 
 
 30 
 
 
 .36 
 .75 
 
 
 
 
 "".'56" 
 
 .48 
 
 
 31 
 
 
 (a) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
ISLAND OF HAWAII. 
 
 263 
 
 Daily discharge, in second-feet, at station No. 29 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.01 
 .01 
 .01 
 .01 
 .01 
 
 .01 
 .01 
 .01 
 .01 
 .01 
 
 .0 
 
 0.0 
 
 0.0 
 
 0.03 
 .02 
 
 .01 
 .02 
 .01 
 
 .01 
 .05 
 .15 
 .10 
 .05 
 
 .05 
 .02 
 .01 
 
 0.02 
 .01 
 .01 
 .20 
 .10 
 
 .05 
 .04 
 .02 
 .01 
 .01 
 
 .01 
 .01 
 .01 
 .0 
 
 0.0 
 
 0.01 
 
 0.01 
 
 0.02 
 .05 
 .15 
 .20 
 .10 
 
 .05 
 .05 
 .02 
 .01 
 
 0.0 
 (a) 
 
 0.1 
 .1 
 .10 
 .02 
 .01 
 
 0.02 
 
 2 
 
 .05 
 
 3 
 
 
 
 
 
 
 .01 
 
 4 
 
 
 
 
 
 
 
 5 
 
 
 
 
 
 
 
 6 
 
 
 
 
 
 
 
 7 
 
 
 
 
 
 
 
 
 8 
 
 
 
 
 
 
 
 
 
 9 
 
 
 
 
 
 
 
 .01 
 .15 
 
 .10 
 .01 
 
 .01 
 
 .01 
 
 10. 
 
 
 
 
 
 
 .00 
 
 11. 
 
 
 .0 
 
 .02 
 
 
 
 
 
 
 
 12. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 14 
 
 
 
 
 
 
 
 
 
 
 15 
 
 
 
 
 
 
 .01 
 .0 
 
 
 
 
 
 
 16 . 
 
 
 
 
 
 
 
 
 
 
 .01 
 .05 
 .02 
 .03 
 .01 
 
 
 17. 
 
 
 
 
 
 
 
 
 
 
 
 18. 
 
 
 
 
 
 
 
 
 
 
 .0 
 
 .02 
 
 .02 
 
 .10 
 .15 
 .20 
 .05 
 .02 
 
 .10 
 .25 
 .10 
 .05 
 .02 
 .02 
 
 .00 
 
 19. 
 
 
 .0 
 .05 
 
 .08 
 .16 
 .20 
 .10 
 .05 
 
 .02 
 .02 
 .00 
 .02 
 
 
 
 
 
 
 
 
 .01 
 
 20 
 
 
 
 
 
 .0 
 .1 
 
 
 .01 
 .0 
 
 
 .01 
 
 21. . 
 
 
 
 
 
 .01 
 
 22. .. 
 
 
 .2 
 .1 
 
 
 
 .02 
 
 23 
 
 
 
 
 
 
 
 
 .03 
 
 24. . 
 
 
 
 
 
 .0 
 .01 
 
 
 .01 
 .0 
 
 .25 
 
 25.... 
 
 
 .01 
 .00 
 .00 
 (o) 
 .00 
 .04 
 
 .01 
 
 .02 
 .03 
 .07 
 .02 
 .01 
 
 
 
 .16 
 
 26. . 
 
 
 
 
 .02 
 
 27 
 
 
 
 
 
 
 
 .01 
 
 28 
 
 
 
 
 
 
 
 
 29... 
 
 
 
 
 .01 
 
 
 
 
 
 
 
 ........ 
 
 .01 
 
 
 .0 
 
 .01 
 
 
 31 
 
 .0 
 
 
 
 .0 
 
 .01 
 
 
 
 
 
 a Channel dry. 
 Monthly discharge at station No. 29 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 September . 
 October . . . 
 November. 
 December . 
 
 1911. 
 
 January . . 
 February. 
 
 March 
 
 April..... 
 
 1912. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 0.003 
 .020 
 .010 
 .030 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.20 
 1.40 
 
 Month. 
 
 1912— Continued. 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.020 
 .003 
 .006 
 .006 
 .030 
 .040 
 .020 
 .020 
 
 ,02 
 
 1.00 
 
 .20 
 
 .40 
 
 .40 
 
 1.60 
 
 2.20 
 
 1.40 
 
 1.40 
 
 12.40 
 
 a Stream dry most of the time. Mean for month less than 0.01. 
 
 Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
 Discharge measurements at station No. SO at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 • Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 15 
 
 Feet. 
 0.40 
 .33 
 
 Sec.-ft. 
 0.04 
 
 Nov. 22 
 
 Feet. 
 0.22 
 .04 
 
 Sec.-ft. 
 
 Sept. 26 
 
 Dec. 12.. 
 
 
 
 
 
 
 Note.— Bed of stream of silt, sand, and gravel. Shifting. One channel at all stages. 
 
264 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 30 at 2,700-foot level, nearHilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.38 
 
 
 0.64 
 
 .42 
 
 0.30 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.62 
 .60 
 .59 
 
 .61 
 .62 
 .65 
 .64 
 .60 
 
 .55 
 .50 
 .49 
 .45 
 .40 
 
 .35 
 
 "(«)" 
 
 (a) 
 
 0.36 
 .31 
 .30 
 
 0.58 
 .62 
 .56 
 
 .66 
 
 
 
 0.53 
 .45 
 .40 
 
 .38 
 
 ""."ie" 
 
 .16 
 .38 
 
 
 
 
 0.24 
 
 4 
 
 0.80 
 .67 
 
 '"6."io" 
 
 """."p8" 
 
 .54 
 .43 
 
 "".*48" 
 .42 
 .39 
 .40 
 
 '"6."60" 
 
 .60 
 .62 
 .49 
 
 .42 
 
 .40 
 .40 
 .35 
 .35 
 .31 
 
 .36 
 
 .34 
 .31 
 
 .30 
 
 ""."§2" 
 
 ""*32" 
 
 .32 
 .55 
 .35 
 .44 
 
 """."28* 
 
 """."26" 
 .20 
 .45 
 
 ""."25" 
 .25 
 
 " .20 
 .20 
 
 .31 
 
 .30 
 
 5 
 
 .12 
 
 6 
 
 .11 
 
 7 
 
 '"(a)" 
 (a) 
 (a) 
 
 (a) 
 (a) 
 0.41 
 .30 
 .25 
 
 .25 
 (a) 
 
 (<0 
 
 .45 
 .88 
 
 .32 
 
 .12 
 
 8 . 
 
 
 
 .25 
 
 9... 
 
 .36 
 .39 
 
 .40 
 .66 
 .69 
 .75 
 
 .58 
 
 .50 
 .65 
 
 "".hi" 
 
 .45 
 .40 
 .50 
 
 
 
 
 .14 
 
 10 
 
 .63 
 
 .62 
 .59 
 
 .46 
 .59 
 
 .52 
 
 """."52* 
 .64 
 .56 
 
 .78 
 .75 
 .59 
 
 
 
 .11 
 
 11 . 
 
 
 
 .09 
 
 12 . 
 
 
 
 
 .49 
 .51 
 
 .06 
 
 13 
 
 .40 
 
 .29 
 
 .49 
 
 .05 
 
 14 
 
 .10 
 
 15 
 
 
 .24 
 
 .30 
 
 .52 
 .34 
 
 .20 
 
 16.... 
 
 .24 
 
 17 
 
 .30 
 
 .31 
 
 
 .09 
 
 18... 
 
 
 .53 
 
 .35 
 
 .34 
 .32 
 
 .35 
 .35 
 .34 
 .32 
 
 .32 
 .32 
 
 (°) 
 
 C«) 
 
 .65 
 
 .49 
 .50 
 .69 
 
 """;24" 
 .24 
 
 .27 
 
 .31 
 
 ""."28" 
 
 .28 
 .24 
 .28 
 
 .10 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .28 
 
 
 
 .21 
 
 20 
 
 
 
 
 .30 
 
 21 
 
 
 .30 
 
 (0) 
 
 """."32' 
 .35 
 .35 
 .30 
 
 .30 
 .45 
 
 .16 
 
 22 
 
 
 23 
 
 .21 
 
 
 (a) 
 .44 
 
 .45 
 .42 
 .40 
 .45 
 
 
 24 
 
 
 25 
 
 
 .50 
 
 .41 
 .37 
 .31 
 .30 
 .56 
 1.08 
 
 .71 
 
 .68 
 .73 
 .66 
 
 .20 
 ■"""20" 
 
 .40 
 
 .38 
 .49 
 .39 
 
 .22 
 
 .20 
 .20 
 
 .23 
 
 26 
 
 
 
 
 27 
 
 (a) 
 
 
 .26 
 
 28 
 
 .16 
 
 29 
 
 
 
 .19 
 
 30 
 
 
 
 
 """."§5" 
 
 .26 
 
 
 31 
 
 
 .19 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. SO at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.04 
 .04 
 .04 
 
 0.00 
 
 0.00 
 
 0.05 
 
 0.05 
 .15 
 .15 
 .15 
 .25 
 
 .10 
 .05 
 
 0.0 
 
 0.01 
 
 0.01 
 
 0.01 
 
 
 
 
 2 
 
 
 
 
 3 
 
 
 
 
 
 
 
 
 
 
 
 4 
 
 
 
 
 
 
 
 
 
 
 
 5 
 
 
 
 
 
 
 .01 
 .00 
 
 
 
 
 
 
 6 
 
 
 
 
 .05 
 .10 
 
 
 
 
 
 
 7 
 
 .04 
 .05 
 .05 
 .04 
 
 
 
 
 
 
 
 
 8 
 
 
 
 
 
 
 
 
 
 
 9 
 
 
 
 .10 
 .05 
 
 
 
 
 
 
 
 
 
 10 
 
 
 
 .05 
 
 .02 
 .02 
 .00 
 
 
 .66 
 .01 
 
 
 
 
 
 
 11 
 
 
 .00 
 .07 
 .08 
 .15 
 .05 
 
 
 
 
 
 
 12 
 
 
 .00 
 .01 
 .00 
 
 
 
 
 
 
 13 
 
 .04 
 .02 
 .01 
 
 .01 
 .00 
 
 
 
 
 
 
 
 
 14 
 
 
 
 
 
 
 
 
 15 
 
 
 
 
 .01 
 .00 
 
 
 .01 
 
 
 
 
 
 16 
 
 
 
 
 
 
 
 17 
 
 
 
 
 
 
 
 
 
 18 
 
 
 
 
 
 
 
 
 
 
 
 
 19 
 
 
 .00 
 .25 
 
 .35 
 .65 
 .30 
 .10 
 .05 
 
 .01 
 
 
 
 
 
 
 
 
 
 
 
 20 
 
 
 ""."65" 
 .00 
 
 .05 
 
 .15 
 .15 
 .05 
 .10 
 .15 
 
 
 
 
 .01 
 .0 
 
 
 
 
 
 21 
 
 
 
 
 
 
 
 
 
 22... 
 
 
 
 .0 
 .01 
 
 
 
 
 
 
 23 
 
 
 
 
 
 
 
 
 24 
 
 
 
 
 
 
 
 
 25 
 
 
 
 
 
 
 
 
 
 
 26 
 
 
 
 
 
 
 
 
 
 
 27 
 
 
 .15 
 .05 
 
 
 
 
 
 
 
 
 
 28 
 
 
 
 
 
 
 
 
 
 
 
 
 29 
 
 
 .01 
 
 .00 
 .01 
 .40 
 
 
 
 
 
 .00 
 
 .05 
 
 
 
 
 30 
 
 
 .05 
 
 "".'66' 
 
 .01 
 
 
 
 
 
 
 31 
 
 .00 
 
 
 .0 
 
 .0 
 
 
 
 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 265 
 
 Monthly discharge at station No. 30 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 October . . . 
 November. 
 December. 
 
 January . . 
 February. 
 
 March 
 
 April 
 
 May 
 
 1912. 
 
 discharge 
 
 in second 
 
 feet. 
 
 a 0.08 
 a. 10 
 a. 12 
 
 .02 
 .06 
 .04 
 .07 
 .04 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 4.92 
 5.95 
 7.37 
 
 1.20 
 3.60 
 2.60 
 4.40 
 2.20 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.01 
 .01 
 .01 
 .01 
 .02 
 .03 
 .03 
 
 ,03 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 0.40 
 
 .40 
 
 .40 
 
 .40 
 
 1.20 
 
 1.60 
 
 2.00 
 
 20.40 
 
 a Estimated. 
 
 Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
 Discharge measurements at station No. 31 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.75 
 
 .58 
 .95 
 
 See.-ft. 
 3.52 
 .81 
 6.04 
 
 Nov.22 
 
 Feet. 
 0.96 
 
 .76 
 
 Sec.-ft. 
 6.45 
 
 Sept. 26. 
 
 Dec. 12.... 
 
 3.08 
 
 Oct. 25 
 
 
 
 
 
 Note.— Bed of stream of cobbles and bowlders; section near gage rough; probably permanent. One 
 channel at all stages. 
 
 Daily gage height, in feet, at station No. 31 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.59 
 
 
 1.09 
 1.01 
 
 1.16 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.71 
 .70 
 
 .68 
 
 .71 
 .72 
 
 .75 
 .72 
 .70 
 
 .65 
 .62 
 .60 
 .59 
 .56 
 
 .55 
 
 "'6.' 22' 
 
 .21 
 
 0.81 
 .73 
 
 .70 
 
 0.84 
 .92 
 1.02 
 
 1.06 
 
 
 
 1.22 
 
 1.08 
 
 .97 
 
 .92 
 
 ""\"80" 
 
 .77 
 .78 
 
 1.72 
 1.36 
 
 .77 
 
 ""."73" 
 
 .70 
 .72 
 .70 
 
 
 
 1.08 
 
 4 
 
 1.22 
 1.09 
 
 ' '6.' 48' 
 "".'45" 
 
 "L18" 
 
 1.18 
 1.69 
 1.02 
 .90 
 
 .81 
 .99 
 
 .84 
 .79 
 .67 
 
 .82 
 
 .76 
 .66 
 
 .62 
 
 "\"60" 
 
 "".'66' 
 
 .67 
 .85 
 
 !88 
 
 "i.'ijj" 
 
 ""."85" 
 .84 
 1.19 
 
 "i."28" 
 
 1.16 
 
 .99 
 
 .88 
 
 1.18 
 
 1.12 
 
 5 
 
 .95 
 
 6 
 
 .90 
 
 7 
 
 ""."is" 
 
 .11 
 
 .10 
 
 .10 
 .10 
 .70 
 .61 
 .41 
 
 .38 
 .28 
 .10 
 .27 
 1.16 
 
 .65 
 
 .92 
 
 8 
 
 
 
 1.05 
 
 9 
 
 .76 
 .80 
 
 .88 
 1.21 
 1.38 
 1.46 
 1.09 
 
 .91 
 1.11 
 
 ""i.20" 
 
 1.08 
 .94 
 .94 
 
 
 
 
 .99 
 
 10 
 
 1.32 
 
 1.21 
 1.10 
 
 """."91" 
 1.04 
 
 .90 
 
 ""."95" 
 .94 
 .91 
 
 1.13 
 
 1.09 
 
 .91 
 
 
 
 .88 
 
 11 
 
 
 
 .81 
 
 12 
 
 
 
 
 .68 
 .74 
 
 .77 
 
 13 
 
 .91 
 
 .60 
 
 .89 
 
 .72 
 
 14 
 
 .75 
 
 15 
 
 
 .52 
 
 .79 
 
 .90 
 
 .74 
 
 .82 
 
 16 
 
 .97 
 
 17 
 
 .69 
 
 .66 
 
 
 .82 
 
 18 
 
 
 
 .89 
 
 .72 
 .69 
 .67 
 
 .68 
 .76 
 .64 
 .64 
 
 .58 
 .57 
 .52 
 .54 
 1.19 
 
 .92 
 .93 
 1.25 
 
 '*L25' 
 .96 
 
 .90 
 
 1.20 
 
 "i.'io" 
 1.00 
 
 .98 
 1.01 
 
 .75 
 
 19 
 
 .51 
 
 .48 
 
 .44 
 .42 
 .41 
 .41 
 
 .67 
 
 
 
 .92 
 
 20 
 
 
 
 
 1.36 
 
 21 
 
 
 .61 
 
 .70 
 
 "*.*6i" 
 
 .60 
 
 !65 
 
 .62 
 .80 
 
 
 22 
 
 
 23 
 
 .6i 
 
 
 .68 
 .96 
 
 .75 
 .74 
 .75 
 .70 
 
 
 24 
 
 
 25 
 
 
 .89 
 
 .78 
 .69 
 .64 
 .61 
 .72 
 1.71 
 
 1.04 
 
 1.17 
 1.04 
 1.06 
 
 .59 
 
 "".'58' 
 
 .81 
 
 .74 
 .80 
 .75 
 
 .88 
 
 .85 
 .82 
 
 1.04 
 
 26 
 
 
 
 
 27 
 
 .42 
 .41 
 .40 
 .40 
 
 
 1.18 
 
 28.... 
 
 .99 
 
 29 
 
 
 
 .99 
 
 30 
 
 
 
 
 "i.'ii" 
 
 .89 
 
 
 31 
 
 
 .50 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
266 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. SI at 2,700-foot level, near Eilo, Hiawai, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 14.8 
 14.8 
 16.2 
 17.6 
 19.0 
 
 15.2 
 12.0 
 12.0 
 12.4 
 12.4 
 
 8.9 
 9.2 
 9.5 
 9.8 
 10.1 
 
 1.0 
 1.0 
 1.0 
 3.8 
 
 7.4 
 
 8.3 
 9.2 
 10.4 
 12.0 
 7.4 
 
 8.6 
 9.8 
 11.2 
 13.1 
 15.2 
 
 2.4 
 2.3 
 2.0 
 2.2 
 2.4 
 
 2.0 
 1.5 
 1.8 
 2.6 
 2.3 
 
 2.9 
 2.4 
 6.4 
 16.6 
 41.5 
 
 16 
 
 
 10.4 
 10.4 
 6.4 
 3.8 
 3.5 
 
 3.0 
 2.6 
 2.6 
 2.4 
 2.4 
 
 2.3 
 1.6 
 1.5 
 1.3 
 1.0 
 1.0 
 
 6.4 
 7.0 
 7.7 
 8.6 
 9.5 
 
 10.4 
 11.6 
 13.1 
 
 14.8 
 16.6 
 
 7.0 
 4.1 
 4.0 
 3.5 
 2.6 
 
 13.5 
 
 2 
 
 
 17 
 
 
 33.6 
 
 3 
 
 
 18 
 
 
 33.6 
 
 4 
 
 
 19 
 
 
 41.5 
 
 5 
 
 
 20 
 
 
 25.2 
 
 6 . 
 
 
 21 
 
 
 12.4 
 
 7 
 
 
 22 
 
 
 7.4 
 
 8 
 
 
 23 
 
 
 6.4 
 
 9 
 
 
 24 
 
 
 5.3 
 
 10 
 
 
 25 
 
 
 26.6 
 
 11 
 
 
 26 
 
 38.2 
 23.2 
 21.6 
 14.3 
 14.3 
 
 19.5 
 
 12 
 
 
 27 
 
 19.0 
 
 13 . 
 
 
 28 
 
 17.1 
 
 
 
 29 
 
 25.2 
 
 15 
 
 
 30 
 
 21.6 
 
 
 
 31 
 
 19.0 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 31 at 
 
 for 1912. 
 
 ', 700-foot level, near Hilo, Hawaii, 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2.40 
 2.40 
 2.40 
 2.30 
 2.00 
 
 2.40 
 2.60 
 3.00 
 2.60 
 2.30 
 
 1.60 
 
 1.30 
 
 1.00 
 
 .90 
 
 .80 
 
 .70 
 .60 
 .60 
 .50 
 .30 
 
 .20 
 .20 
 .10 
 .10 
 .10 
 
 .20 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 2.30 
 1.10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 12.70 
 
 20.00 
 35.00 
 55.00 
 55.00 
 40.00 
 
 15.00 
 5.00 
 4.00 
 8.00 
 
 5.00 
 5.00 
 4.00 
 2.80 
 2.30 
 
 2.00 
 1.60 
 2.00 
 3.20 
 3.80 
 
 5.00 
 14.80 
 23.20 
 29.30 
 10.10 
 
 5.50 
 10 80 
 15.00 
 20.00 
 14.30 
 
 9.80 
 6.10 
 6.10 
 5.60 
 5.10 
 
 3.50 
 2.20 
 1.50 
 1.10 
 2.60 
 49.10 
 
 25.00 
 12.00 
 4.40 
 5.70 
 8.00 
 
 9.20 
 40.00 
 55.00 
 40.00 
 20.00 
 
 14.80 
 10.40 
 8.00 
 5.50 
 8.60 
 
 5.30 
 
 10.00 
 6.30 
 6.10 
 5.50 
 
 11.60 
 10.10 
 5.50 
 7.00 
 8.60 
 
 13.10 
 8.60 
 9.20 
 5.00 
 8.00 
 
 15.00 
 20.00 
 12.00 
 15.20 
 12.00 
 
 10.10 
 5.00 
 5.00 
 5.00 
 5.00 
 
 5.00 
 5.00 
 5.50 
 4.50 
 3.50 
 
 2.50 
 2.20 
 2.00 
 1.90 
 2.00 
 
 2.00 
 2.00 
 1.10 
 3.00 
 .90 
 
 .90 
 .90 
 1.00 
 1.00 
 .50 
 .40 
 
 0.40 
 .40 
 .30 
 .30 
 .30 
 
 .20 
 .20 
 .20 
 .20 
 .30 
 
 '.40 
 .50 
 
 1.00 
 .80 
 .50 
 
 1.10 
 1.80 
 1.60 
 1.40 
 1.20 
 
 1.10 
 1.80 
 2.50 
 3.20 
 4.00 
 
 2.90 
 3.80 
 3.00 
 2.00 
 2.00 
 
 5.00 
 10.00 
 15.20 
 9.80 
 6.80 
 
 5.70 
 5.00 
 3.80 
 3.30 
 3.50 
 
 20.00 
 15.00 
 5.00 
 8.00 
 3.60 
 
 3.00 
 3.00 
 3.00 
 3.00 
 3.00 
 
 2.30 
 2.20 
 2.00 
 6.60 
 4.80 
 
 3.00 
 2.90 
 3.00 
 2.30 
 2.00 
 1.50 
 
 0.90 
 
 1.00 
 
 50.00 
 
 22.10 
 
 3.40 
 
 3.00 
 2.80 
 2.30 
 2.60 
 2.30 
 
 2.20 
 2.00 
 2.90 
 3.50 
 5.30 
 
 2.90 
 3.00 
 5.10 
 8.00 
 5.00 
 
 3.00 
 1.10 
 1.00 
 2.20 
 1.60 
 
 1.30 
 3.80 
 5.00 
 4.00 
 3.00 
 3.00 
 
 5.00 
 10.00 
 20.00 
 35.00 
 13.50 
 
 13.50 
 47.40 
 8.00 
 5.30 
 4.60 
 
 3.90 
 7.20 
 4.40 
 3.60 
 1.90 
 
 4.10 
 3.00 
 2.60 
 2.20 
 1.90 
 
 2.00 
 3.20 
 1.50 
 1.50 
 1.20 
 
 .90 
 .80 
 .50 
 .60 
 13.90 
 
 10.10 
 7.70 
 5.40 
 3.20 
 1.80 
 
 1.30 
 1.20 
 1.00 
 1.40 
 1.80 
 
 1.90 
 4.60 
 2.20 
 5.00 
 5.00 
 
 4.00 
 20.00 
 5.70 
 5.90 
 16.60 
 
 20.00 
 25.00 
 40.00 
 16.60 
 6.60 
 
 5.30 
 30.00 
 50.00 
 40.00 
 25.00 
 10.80 
 
 12.70 
 10.00 
 30.00 
 15.00 
 11.20 
 
 5.00 
 4.50 
 4.40 
 13.90 
 40.00 
 
 35.00 
 18.10 
 12.70 
 7.20 
 5.00 
 
 13.50 
 25.00 
 14.30 
 20.00 
 10.40 
 
 7.40 
 7.00 
 7.70 
 6.30 
 5.00 
 
 4.60 
 4.10 
 15.00 
 10.00 
 5.20 
 
 15.00 
 
 2 
 
 3 
 
 20.00 
 9.80 
 
 4... 
 
 11.20 
 
 5 
 
 6.30 
 
 6 
 
 5.30 
 
 7 
 
 5.70 
 
 8 
 
 8.90 
 
 9 
 
 7.20 
 
 10 
 
 5.00 
 
 11 
 
 3.90 
 
 12 
 
 3.40 
 
 13 
 
 2.60 
 
 14 
 
 3.00 
 
 15 
 
 4.10 
 
 16 ". 
 
 6.80 
 
 17 
 
 4.10 
 
 18 
 
 3.00 
 
 19 
 
 5.70 
 
 20 
 
 22.10 
 
 21.... 
 
 10.00 
 
 22 
 
 20.00 
 
 23 
 
 35.00 
 
 24 
 
 20.00 
 
 25 
 
 8.60 
 
 26 
 
 15.00 
 
 27 
 
 13.50 
 
 28 
 
 7.20 
 
 29 
 
 7.20 
 
 30 
 
 5.00 
 
 31 
 
 5.00 
 
 
 
 Note. — Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
ISLAND OF HAWAII. 267 
 
 Monthly discharge at station No. 31 at 2,100-foot level near, Eilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December ... 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 13. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 490 
 833 
 
 67.60 
 506.00 
 540.00 
 768.00 
 302. 00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 Septembtr 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 1.31 
 5.40 
 5.14 
 7.44 
 12.10 
 12.70 
 
 7.50 
 
 Run-off 
 (total in 
 acre-feet). 
 
 78.00 
 332.00 
 316.00 
 443.00 
 744. 00 
 756.00 
 594.00 
 
 5,450.00 
 
 Discharge measurements at station No. 32 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.l 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.34 
 .33 
 .50 
 
 Sec.-ft. 
 0.27 
 .06 
 .94 
 
 Nov. 22 
 
 Feet. 
 0.48 
 .38 
 
 Sec.-ft. 
 1.27 
 
 Sept. 26 
 
 Dec. 12 
 
 .37 
 
 Oct. 25 
 
 
 
 
 
 Note. — Bed of stream composed of sand and gravel with few small cobbles; shifting. One channel at 
 all stages. 
 
 Daily gage height, in feet, at station No. 32 at 2,700-foot level, near Hilo t Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.35 
 
 
 0.62 
 .49 
 
 0.70 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.62 
 .60 
 
 .58 
 
 .62 
 .64 
 .68 
 .66 
 .62 
 
 .65 
 .62 
 .51 
 
 .50 
 .48 
 
 .46 
 
 I" 
 
 6.42 
 .40- 
 .40 
 
 0.42 
 .48 
 .54 
 
 .61 
 
 
 
 0.60 
 .54 
 .46 
 
 .42 
 
 ""."35' 
 .35 
 .40 
 
 .60 
 .59 
 .39 
 
 ""."42" 
 .38 
 .42 
 .40 
 
 
 
 0.60 
 
 4 
 
 0.85 
 .62 
 
 "6." 26* 
 ""."is" 
 
 *"6."87" 
 
 .80 
 .85 
 .53 
 .48 
 
 .40 
 .43 
 .40 
 .40 
 .38 
 
 .40 
 
 .34 
 .32 
 
 .32 
 
 ""."32" 
 
 "".'32" 
 
 .32 
 .54 
 .55 
 .38 
 
 ""."54' 
 
 "*.*39* 
 .39 
 
 .67 
 
 ""."75* 
 
 .70 
 .50 
 .40 
 
 .68 
 
 1.00 
 
 5 
 
 .80 
 
 6..... 
 
 .59 
 
 7 
 
 ( a ) 
 (a) 
 
 0.35 
 .27 
 (a) 
 
 (a) 
 
 $ 
 
 .31 
 
 .59 
 
 .40 
 
 .50 
 
 8 
 
 
 
 .51 
 
 9 '.. 
 
 .41 
 
 .49 
 
 .40 
 .61 
 .79 
 .79 
 .63 
 
 .57 
 .96 
 
 ""."88' 
 
 .71 
 .68 
 .69 
 
 
 
 
 .49 
 
 10 
 
 .68 
 
 .62 
 .54 
 
 "".45" 
 .51 
 
 .48 
 
 '""."49" 
 .54 
 .54 
 
 .64 
 .57 
 .59 
 
 
 
 .42 
 
 11 
 
 
 
 .40 
 
 12 
 
 
 
 
 .38 
 
 .40 
 
 .38 
 
 13 
 
 .52 
 
 .35 
 
 .50 
 
 .34 
 
 14 
 
 .35 
 
 15 
 
 
 .30 
 
 .38 
 
 .44 
 .34 
 
 .38 
 
 16 
 
 .45 
 
 17 
 
 .40 
 
 .32 
 
 
 .44 
 
 18 
 
 
 
 .45 
 
 .38 
 .38 
 .35 
 
 .35 
 .42 
 .40 
 .39 
 
 .32 
 .31 
 .31 
 .32 
 
 .68 
 
 .42 
 
 .50 
 .60 
 
 "".*84' 
 .50 
 
 .47 
 
 .67 
 
 "'.*58' 
 
 .51 
 .48 
 
 .48 
 
 .32 
 
 19 
 
 .40 
 .38 
 
 .31 
 .31 
 .31 
 .30 
 
 .40 
 
 
 
 .42 
 
 20 
 
 
 
 
 .65 
 
 21 
 
 
 .30 
 
 .40 
 
 "*."28" 
 .24 
 .30 
 .25 
 
 .22 
 
 .40 
 
 42 
 
 22 
 
 
 23 
 
 .38 
 
 
 .40 
 .35 
 
 .45 
 .42 
 .40 
 .40 
 
 
 24 
 
 
 25 ;. 
 
 
 .59 
 
 .45 
 .40 
 .40 
 .38 
 .62 
 1.04 
 
 .62 
 
 .68. 
 .65 
 .64 
 
 .31 
 """."36" 
 
 .40 
 
 .38 
 .51 
 .42 
 
 .42 
 
 .41 
 
 .40 
 
 59 
 
 26 
 
 
 
 
 27 
 
 .32 
 .31 
 .30 
 .29 
 
 
 .57 
 .42 
 
 28 
 
 29 
 
 
 
 .44 
 
 30 
 
 
 
 
 '".'84" 
 
 .50 
 
 
 31 
 
 
 .29 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
268 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 32 at 2,700-foot level, near Hilo, Hawaii 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 7.4 
 
 8.1 
 8.3 
 
 8.5 
 8.8 
 
 8.1 
 7.2 
 7.1 
 6.9 
 6.7 
 
 6.1 
 6.1 
 5.9 
 
 5.8 
 5.8 
 
 0.5 
 
 .5 
 
 .5 
 
 1.2 
 
 2.2 
 
 2.6 
 
 2.9 
 3.3 
 
 3.7 
 2.7 
 
 3.0 
 3.4 
 4.0 
 4.5 
 5.1 
 
 2.4 
 2.2 
 1.4 
 1.4 
 1.7 
 
 1.2 
 .9 
 1.2 
 2.4 
 2.2 
 
 2.4 
 2.2 
 6.1 
 10.8 
 17.5 
 
 16 
 
 
 5.6 
 5.6 
 3.7 
 2.2 
 
 1.8 
 
 1.4 
 1.1 
 1.1 
 1.0 
 .9 
 
 .8 
 .8 
 .8 
 .6 
 .6 
 .6 
 
 3.4 
 3.8 
 4.2 
 4.7 
 5.1 
 
 5.8 
 6.4 
 7.1 
 
 7.8 
 8.5 
 
 6.1 
 4.1 
 4.1 
 3.5 
 2.8 
 
 9 
 
 2 
 
 
 17 
 
 
 14.9 
 
 3 
 
 
 18 
 
 
 13.7 
 
 4 
 
 
 19 
 
 
 16.2 
 
 5 
 
 
 20 
 
 
 11.9 
 
 6 
 
 
 21 
 
 
 8.5 
 
 7 
 
 
 22 
 
 
 5.1 
 
 8 
 
 
 23 
 
 
 4.7 
 
 9 
 
 
 24 
 
 
 4.1 
 
 10 -.-. 
 
 
 25 
 
 
 11.9 
 
 11 
 
 
 26 
 
 10.3 
 7.2 
 8.1 
 6.4 
 6.9 
 
 7.8 
 
 12 
 
 
 27. 
 
 7 2 
 
 13 
 
 
 28 
 
 7.1 
 
 
 
 29 
 
 10.3 
 
 15 
 
 
 30 
 
 9 9 
 
 
 
 31 
 
 8.1 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. Si 
 
 for 1912. 
 
 at 2,700-foot level, near Hilo, Hawaii, 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.40 
 .40 
 .45 
 .40 
 .35 
 
 .46 
 .50 
 .65 
 .60 
 
 .45 
 
 .55 
 .45 
 .20 
 .20 
 
 .20 
 
 .15 
 .15 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 (a) 
 
 w 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 0.10 
 .05 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 .05 
 .40 
 
 4.00 
 8.00 
 10.00 
 6.00 
 4.00 
 
 2.00 
 2.00 
 2.00 
 2.00 
 
 
 
 1.00 
 .80 
 .65 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .60 
 1.15 
 
 .50 
 2.30 
 4.65 
 4.65 
 2.55 
 
 1.90 
 7.40 
 7.00 
 6.50 
 6.10 
 
 3.55 
 3.15 
 3.30 
 2.70 
 2.10 
 
 .85 
 .50 
 .50 
 .40 
 2.45 
 8.80 
 
 4.00 
 2.00 
 .65 
 1.05 
 1.60 
 
 2.30 
 8.00 
 7.00 
 6.00 
 3.15 
 
 2.45 
 1.60 
 1.20 
 .85 
 1.30 
 
 1.05 
 1.10 
 1.15 
 1.60 
 1.60 
 
 2.70 
 1.90 
 2.10 
 2.30 
 2.45 
 
 3.15 
 
 2.80 
 2.70 
 2.00 
 2.00 
 
 3.00 
 4.00 
 3.00 
 5.60 
 7.00 
 
 2.45 
 
 2.00 
 1.50 
 1.50 
 1.50 
 
 1.50 
 1.50 
 1.40 
 1.20 
 1.00 
 
 .80 
 .50 
 .50 
 .50 
 .50 
 
 .40 
 .40 
 .40 
 .30 
 .15 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 ' "6."30" 
 
 '"".'io' 
 
 *"."20' 
 
 .10 
 
 '"".'50* 
 
 .40 
 
 1.30 
 
 .65 
 
 0.50 
 1.00 
 2.20 
 1.60 
 .90 
 
 .65 
 .50 
 .30 
 .30 
 .50 
 
 .40 
 .30 
 1.20 
 .30 
 .40 
 
 .40 
 .40 
 .40 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .30 
 .60 
 
 .85 
 .65 
 .50 
 .50 
 .40 
 .30 
 
 0.30 
 
 .30 
 2.20 
 2.10 
 
 .45 
 
 .50 
 .65 
 .40 
 .65 
 .50 
 
 .40 
 .40 
 .50 
 .60 
 .80 
 
 .25 
 .50 
 .85 
 .90 
 .50 
 
 .30 
 .10 
 .05 
 .10 
 .10 
 
 .05 
 .50 
 .40 
 .40 
 .30 
 .30 
 
 3.00 
 4.00 
 6.00 
 9.00 
 5.90 
 
 4.80 
 5.60 
 1.50 
 1.10 
 .80 
 
 .50 
 .70 
 .50 
 .50 
 .40 
 
 .50 
 .40 
 .40 
 .40 
 .30 
 
 .30 
 .60 
 .50 
 .50 
 .40 
 
 .20 
 .10 
 .10 
 .20 
 3.20 
 
 2.60 
 
 1.10 
 
 .70 
 
 .30 
 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 1.60 
 1.70 
 
 .40 
 1.00 
 
 2.00 
 4.00 
 .60 
 1.20 
 2.20 
 
 3.00 
 5.00 
 8.00 
 5.40 
 1.20 
 
 1.00 
 10.00 
 8.00 
 8.00 
 6.00 
 5.40 
 
 3.40 
 3.00 
 6. CO 
 3.00 
 1.60 
 
 1.00 
 
 .50 
 
 .50 
 
 3.00 
 
 9.00 
 
 8.00 
 4.10 
 3.40 
 1.20 
 .50 
 
 3.20 
 
 7.00 
 3.00 
 4.00 
 2.00 
 
 1.30 
 1.10 
 1.10 
 1.00 
 .60 
 
 .60 
 
 .50 
 
 2.00 
 
 1.50 
 
 1.20 
 
 5.00 
 
 2 
 
 8.00 
 
 3 
 
 2.20 
 
 4 
 
 8.10 
 
 5 
 
 4.80 
 
 6 
 
 2.10 
 
 7 
 
 1.20 
 
 8 
 
 1.60 
 
 9 
 
 1.10 
 
 10 
 
 .60 
 
 11 
 
 .50 
 
 12 
 
 .40 
 
 13 
 
 .20 
 
 14 
 
 .30 
 
 15 
 
 .40 
 
 16 
 
 .90 
 
 17 
 
 80 
 
 18 
 
 .20 
 
 19 
 
 .60 
 
 20 
 
 2.80 
 
 21 
 
 .60 
 
 22, 
 
 8.00 
 
 23 
 
 9.00 
 
 24 
 
 6.00 
 
 25 
 
 2.10 
 
 26 
 
 3.00 
 
 27 
 
 1.90 
 
 28 
 
 .60 
 
 29 
 
 .80 
 
 30 
 
 .60 
 
 31 
 
 .50 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated rom diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
ISLAND OF HAWAII. 269 
 
 Monthly discharge at station No. 32 at 2,700-foot level, near Hilo, Hawaii, for 1911-12 • 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 4.37 
 3.92 
 
 .24 
 1.40 
 2.53 
 2.48 
 1.39 
 
 Run-off 
 (total in 
 acre-feet). 
 
 269. 00 
 234. 00 
 411. 00 
 
 14.80 
 86.10 
 156. 00 
 148. 00 
 85.50 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.50 
 .61 
 .53 
 1.75 
 2.64 
 2.61 
 2.42 
 
 1.59 
 
 29.80 
 37.50 
 32.60 
 104. 00 
 162. 00 
 155. 00 
 149. 00 
 
 1, 160. 00 
 
 Discharge measurements at station No. 33 at 2,700-foot level, near Hilo, Hawaii, in 1912.. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.69 
 .52 
 
 .78 
 
 Sec.-ft. 
 0.07 
 .00 
 .19 
 
 Nov. 22 
 
 Feet. 
 0.98 
 .62 
 
 Sec.-ft. 
 0.23 
 
 Sept. 26 
 
 Dec. 12.. 
 
 
 Oct. 25 
 
 
 
 
 
 Note. — Bed of stream composed of sand and gravel with few small cobbles; shifting. One channel at 
 all stages. 
 
 Daily gage height, in feet, at station No. 33 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.59 
 
 
 0.84 
 .75 
 
 0.84 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.81 
 .78 
 .75 
 
 .82 
 .82 
 .88 
 .85 
 .82 
 
 .75 
 .72 
 .70 
 .70 
 .62 
 
 .60 
 
 "[a]" 
 (a) 
 
 0.73 
 .70 
 .65 
 
 0.74 
 .80 
 
 .82 
 
 .88 
 
 
 
 0.89 
 
 .84 
 .80 
 
 .78 
 
 '"."75' 
 .75 
 
 .67 
 
 .98 
 
 .80 
 .70 
 
 "~".n 
 
 .68 
 .70 
 .72 
 
 
 
 0.82 
 
 4 
 
 1.00 
 .86 
 
 "6.3T 
 ■(«)"■ 
 
 "6." 86' 
 
 .78 
 .81 
 .78 
 .80 
 
 .70 
 .78 
 .76 
 .79 
 .76 
 
 .71 
 
 .66 
 .60 
 
 .55 
 
 '".'56' 
 
 "".GO 
 
 .62 
 
 .84 
 .66 
 .70 
 
 """."79" 
 
 "".'67" 
 .69 
 .98 
 
 ""."84" 
 
 .86 
 .80 
 .72 
 
 .94 
 
 .90 
 
 5 
 
 .80 
 
 6 
 
 .78 
 
 7 
 
 (a) 
 (a) 
 
 (a) 
 (o) 
 0.71 
 .60 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 .75 
 .92 
 
 .68 
 
 .74 
 
 8 
 
 
 
 .80 
 
 9 .. 
 
 .69 
 .69 
 
 .72 
 .90 
 .97 
 1.00 
 .83 
 
 .80 
 1.02 
 
 "".'89' 
 
 , .80 
 
 .74 
 .81 
 
 
 
 
 .78 
 
 10 
 
 .92 
 
 .89 
 .80 
 
 ""."74" 
 .81 
 
 .76 
 
 '".'79' 
 .80 
 .80 
 
 .91 
 .89 
 
 .78 
 
 
 
 .71 
 
 11 
 
 
 
 .66 
 
 12 
 
 
 
 
 .68 
 .72 
 
 .62 
 
 13 
 
 .71 
 
 .43 
 
 .80 
 
 .60 
 
 14 
 
 .65 
 
 15 
 
 
 .38 
 
 .72 
 
 .76 
 
 .70 
 
 16 
 
 .80 
 
 17 
 
 .60 
 
 .46 
 
 
 .66 
 
 18 
 
 
 
 .80 
 
 .64 
 .62 
 .65 
 
 .65 
 .68 
 .62 
 .61 
 
 .56 
 .49 
 .48 
 .42 
 .90 
 
 .76 
 .86 
 .90 
 
 ""."88" 
 .74 
 
 .76 
 
 .90 
 
 ""."si" 
 .79 
 
 .80 
 .80 
 
 .66 
 
 19 
 
 (a) 
 (a) 
 
 fa) 
 
 (a) 
 (a) 
 (a) 
 
 .60 
 
 
 
 .79 
 
 20 
 
 
 
 
 1.04 
 
 21 
 
 
 .40 
 
 .72 
 
 '"."60" 
 .59 
 .64 
 .59 
 
 .55 
 
 .77 
 
 .76 
 
 22 
 
 
 23 
 
 .53 
 
 
 .71 
 
 .82 
 
 .70 
 .72 
 .65 
 .68 
 
 
 24 
 
 
 25 
 
 
 .80 
 
 .71 
 .68 
 .64 
 .62 
 .78 
 1.33 
 
 .86 
 
 .90 
 .84 
 
 .80 
 
 .50 
 "".'49' 
 
 .70 
 
 .68 
 .73 
 .69 
 
 .74 
 
 .72 
 .70 
 
 .83 
 
 26 
 
 
 
 
 27 
 
 (a) 
 }a) 
 {a) 
 (a) 
 
 
 .83 
 
 28 
 
 .76 
 
 29 
 
 
 
 .74 
 
 30 
 
 
 
 
 '"*!86* 
 
 .75 
 
 
 31 
 
 
 .40 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
270 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 33 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.35 
 .35 
 .38 
 .41 
 .45 
 
 .43 
 .40 
 .40 
 .40 
 .40 
 
 .33 
 .33 
 .34 
 .34 
 .35 
 
 (a) 
 
 13 
 
 0.15 
 .25 
 
 .28 
 .30 
 .33 
 .35 
 .35 
 
 .36 
 .37 
 .38 
 .39 
 
 .40 
 
 0.12 
 .11 
 
 .10 
 .11 
 .12 
 
 .12 
 .11 
 .12 
 .16 
 .14 
 
 .16 
 .15 
 .21 
 .52 
 1.24 
 
 16 
 
 
 0.35 
 .35 
 .22 
 .15 
 .13 
 
 .12 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .05 
 
 («) 
 (a) 
 
 (a) 
 (a) 
 
 0.27 
 
 .27 
 .27 
 .27 
 .27 
 
 .27 
 .27 
 -.27 
 .27 
 .27 
 
 .18 
 .16 
 .14 
 .13 
 .12 
 
 0.43 
 
 2 
 
 
 17... 
 
 
 .92 
 
 3 
 
 
 18 
 
 
 .84 
 
 4 
 
 
 19 
 
 
 1.00 
 
 5 
 
 
 20 
 
 
 .48 
 
 6 
 
 
 21 
 
 
 .23 
 
 7 
 
 
 22 
 
 
 .18 
 
 8 
 
 
 23 
 
 
 .16 
 
 9 
 
 
 24 
 
 
 .15 
 
 10 
 
 
 25 
 
 
 .64 
 
 11 
 
 
 26 
 
 0.45 
 .33 
 .35 
 .35 
 .35 
 
 .40 
 
 12 
 
 
 27 
 
 .37 
 
 13... 
 
 
 28 
 
 .35 
 
 14 
 
 
 29 
 
 .60 
 
 15 
 
 
 30 
 
 .52 
 
 
 
 31 
 
 .45 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 33 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 "Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.15 
 .15 
 .15 
 .15 
 .10 
 
 .15 
 .15 
 .20 
 .15 
 .15 
 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 0.10 
 .05 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 .10 
 .20 
 
 .40 
 .60 
 .80 
 .50 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 .10 
 
 .10 
 .20 
 .25 
 .25 
 .15 
 
 .15 
 .25 
 .25 
 .20 
 .20 
 
 .15 
 .10 
 .15 
 .15 
 .15 
 
 .10 
 .10 
 .05 
 .05 
 .15 
 .65 
 
 0.40 
 
 .20 
 .10 
 .15 
 .15 
 
 .20 
 .50 
 .40 
 .30 
 .20 
 
 .20 
 .15 
 .10 
 .10 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 .20 
 .20 
 .15 
 .20 
 .20 
 
 .20 
 .15 
 .15 
 .10 
 .10 
 
 0.10 
 .20 
 .20 
 .25 
 .40 
 
 .20 
 .20 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 '"".'io* 
 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .20 
 .15 
 .15 
 
 .15 
 .15 
 .10 
 .10 
 .10 
 
 .30 
 .20 
 .15 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .15 
 .10 
 
 .10 
 .10 
 .05 
 .10 
 .10 
 .10 
 
 0.05 
 .17 
 .25 
 .15 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 
 .15 
 
 .10 
 .10 
 .15 
 .10 
 .10 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 0.30 
 .40 
 .50 
 .70 
 .20 
 
 .15 
 .15 
 .15 
 .15 
 .10 
 
 .10 
 .15 
 .15 
 .15 
 .15 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 05 
 .20 
 
 0.15 
 .10 
 .10 
 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .15 
 .05 
 .10 
 .10 
 
 .10 
 .30 
 .15 
 .20 
 .20 
 
 .30 
 .40 
 .50 
 .20 
 .10 
 
 .15 
 .80 
 .50 
 .40 
 .30 
 .20 
 
 0.15 
 .10 
 .30 
 .20 
 
 .15 
 
 .10 
 .10 
 .10 
 .25 
 .50 
 
 .40 
 .15 
 .20 
 .15 
 .10 
 
 .25 
 .20 
 .20 
 .20 
 .15 
 
 .15 
 .15 
 .15 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.25 
 
 2 
 
 .40 
 
 3 
 
 .15 
 
 4 
 
 .20 
 
 5 
 
 .15 
 
 6 
 
 .15 
 
 7 
 
 .10 
 
 8 
 
 .15 
 
 9 
 
 .15 
 
 10 
 
 .10 
 
 11 
 
 .10 
 
 12 
 
 .05 
 
 13 
 
 .05 
 
 11 
 
 .05 
 
 15 
 
 .10 
 
 16 
 
 .15 
 
 17 
 
 .10 
 
 18 
 
 .10 
 
 19 
 
 .15 
 
 20. 
 
 .30 
 
 21 
 
 .15 
 
 22 
 
 .50 
 
 23 
 
 .70 
 
 24 
 
 .50 
 
 25 
 
 .15 
 
 26 
 
 .20 
 
 27 
 
 .15 
 
 28 
 
 .10 
 
 29 
 
 .10 
 
 30 
 
 .10 
 
 31 
 
 .10 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
 near station No. 50. 
 
ISLAND OF HAWAII. 271 
 
 Monthly discharge at station No. 33 at 2,700-foot level, near Rilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October. 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.24 
 .24 
 
 .07 
 .12 
 .15 
 .19 
 .10 
 
 Run-off 
 (total in 
 acre-feet). 
 
 14.90 
 14.60 
 22.30 
 
 11.30 
 6.15 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 0.10 
 .12 
 .10 
 .15 
 .19 
 .17 
 .18 
 
 .14 
 
 Run-off 
 (total in 
 acre-feet). 
 
 5.95 
 7.38 
 6.15 
 8.93 
 11.70 
 10.10 
 11. 10 
 
 99.20 
 
 Discharge measurements at station No. 34 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Aug. 16. 
 Sept. 26 
 Oct. 25. 
 
 Gage 
 height. 
 
 Feet. 
 0.98 
 .89 
 1.15 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 0.66 
 .28 
 1.43 
 
 Date. 
 
 Nov. 22. 
 Dec. 12. 
 
 height. 
 
 Feet. 
 1.29 
 1.02 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 2.37 
 .76 
 
 Note.— Bed of stream composed of gravel and small cobbles. Section is somewhat rough, probably 
 permanent. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 34 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.90 
 
 
 1.27 
 1.15 
 
 1.28 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 1.08 
 1.02 
 1.01 
 
 1.05 
 1.05 
 1.10 
 1.10 
 1.08 
 
 .98 
 .92 
 .90 
 .81 
 
 .81 
 
 .81 
 
 "b'.io 
 
 .70 
 
 0.99 
 .92 
 .90 
 
 1.04 
 1.14 
 1.17 
 
 1.16 
 
 
 
 1.31 
 1.22 
 1.12 
 
 1.10 
 
 "i'66' 
 
 .96 
 .95 
 
 1.32 
 1.20 
 1.05 
 
 "i'66" 
 
 .94 
 1.00 
 1.00 
 
 
 
 1.26 
 
 4 
 
 1.34 
 1.09 
 
 " "6." 66' 
 
 "".*58" 
 
 "i."28" 
 
 1.29 
 1.40 
 1.18 
 1.11 
 
 1.01 
 
 1.16 
 
 1.05 
 
 .99 
 
 .97 
 
 1.05 
 
 .99 
 .92 
 
 .89 
 
 ""."88" 
 
 '".'96' 
 
 .96 
 1.12 
 1.00 
 1.06 
 
 "i.'25" 
 
 '"i."09" 
 1.08 
 1.38 
 
 "i."29" 
 1.30 
 1.20 
 1.11 
 
 1.37 
 
 1.29 
 
 5 
 
 1.16 
 
 6 
 
 1.10 
 
 7 
 
 "\*76' 
 .70 
 
 .68 
 
 .68 
 .70 
 .82 
 .76 
 .65 
 
 .65 
 .65 
 .62 
 .89 
 1.16 
 
 .90 
 
 1.11 
 
 8 
 
 
 
 1.21 
 
 9 
 
 .99 
 1.00 
 
 1.00 
 
 1.28 
 1.48 
 1.48 
 1.18 
 
 1.10 
 1.21 
 
 "i.'2i* 
 
 1.13 
 1.13 
 1.18 
 
 
 
 
 1.14 
 
 10 
 
 1.38 
 
 1.28 
 
 1.18 
 
 "I.62" 
 
 1.24 
 
 1.09 
 
 "i.'i2" 
 
 1.14 
 1.11 
 
 1.31 
 1.26 
 1.16 
 
 
 
 1.10 
 
 11 
 
 
 
 1.05 
 
 12 
 
 
 
 
 .95 
 1.00 
 
 1.02 
 
 13 
 
 1.00 
 
 .70 
 
 1.14 
 
 1.00 
 
 14 
 
 1.01 
 
 15 
 
 
 .68 
 
 .97 
 
 1.10 
 .99 
 
 1.04 
 
 16 
 
 1.17 
 
 17 
 
 .92 
 
 .71 
 
 
 1.01 
 
 18 
 
 
 
 1.11 
 
 .90 
 
 .97 
 .95 
 
 .95 
 
 1.04 
 
 .94 
 
 .92 
 
 .90 
 .89 
 .84 
 .85 
 1.29 
 
 1.12 
 1.18 
 1.31 
 
 "i."34" 
 1.14 
 
 1.11 
 
 1.32 
 
 "i.29" 
 
 1.28 
 1.20 
 1.28 
 
 1.00 
 
 19 
 
 .80 
 .80 
 
 .80 
 .78 
 .76 
 .75 
 
 .91 
 
 
 
 1.18 
 
 20 
 
 
 
 
 1.40 
 
 21 
 
 
 .70 
 
 .95 
 
 "*."9i" 
 .91 
 .94 
 .91 
 
 .90 
 1.03 
 
 1.15 
 
 22 
 
 
 23 
 
 .88 
 
 
 .95 
 1.04 
 
 1.00 
 .99 
 .95 
 .94 
 
 
 24 
 
 
 25 
 
 
 1.14 
 
 1.01 
 
 .99 
 
 .93 
 
 .89 
 
 1.02 
 
 1.66 
 
 1.28 
 
 1.30 
 1.20 
 1.16 
 
 .82 
 
 "".'so' 
 
 1.00 
 
 :95 
 
 1.05 
 
 .96 
 
 1.12 
 
 1.11 
 1.10 
 
 1.26 
 
 26 
 
 
 
 
 27 
 
 .78 
 .76 
 .75 
 
 .74 
 
 
 1.20 
 
 28 
 
 1.14 
 
 29 
 
 
 
 1.14 
 
 30 
 
 
 
 
 "i.*35" 
 
 1.18 
 
 
 31..... 
 
 
 .71 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
272 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 34 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 3.84 
 3.99 
 3.99 
 4.14 
 4.30 
 
 3.52 
 2.75 
 2.75 
 2.90 
 3.06 
 
 2.20 
 2.20 
 2.20 
 2.20 
 2.20 
 
 0.30 
 
 .30 
 
 .30 
 
 .55 
 
 1.65 
 
 1.98 
 2.31 
 2.64 
 2.90 
 1.65 
 
 1.98 
 2.31 
 2.75 
 3.37 
 3.99 
 
 0.64 
 
 .55 
 .50 
 .52 
 .60 
 
 .50 
 .35 
 
 .42 
 .78 
 .64 
 
 .78 
 
 .60 
 
 2.20 
 
 4.74 
 
 16.40 
 
 16 
 
 
 2.20 
 
 2.20 
 
 1.46 
 
 .96 
 
 .82 
 
 .68 
 .55 
 .55 
 .55 
 .52 
 
 .52 
 .42 
 .40 
 .35 
 .30 
 .30 
 
 1.52 
 
 1.76 
 2.09 
 2.42 
 2.75 
 
 3.22 
 
 3.68 
 4.30 
 5.18 
 6.06 
 
 1.87 
 1.52 
 1.52 
 1.06 
 
 .78 
 
 2.53 
 
 2 
 
 
 17 
 
 
 10.90 
 
 3 
 
 
 18 
 
 
 10.60 
 
 4 
 
 
 19.. 
 
 
 12 30 
 
 5 
 
 
 20 
 
 
 7.04 
 
 6 
 
 
 21 
 
 
 3.06 
 
 7 
 
 
 22 
 
 
 1.52 
 
 8 
 
 
 23 
 
 
 1.13 
 
 9 
 
 
 24. . 
 
 
 .78 
 
 10 
 
 
 25 
 
 
 9.76 
 
 11 
 
 
 26 
 
 
 5.40 
 
 12 
 
 
 27 
 
 6.50 
 6.50 
 3.52 
 3.68 
 
 5.40 
 
 13 
 
 
 28 
 
 4.30 
 
 14 
 
 
 29.. 
 
 9.76 
 
 15 
 
 
 30 
 
 9.20 
 
 
 
 31 
 
 7.85 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 34 at 
 
 for 1912. 
 
 ,700-foot level, near Hilo, Hawaii, 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 0.90 
 
 0.15 
 
 0.80 
 
 5.00 
 
 2.00 
 
 0.15 
 
 0.40 
 
 0.30 
 
 2.00 
 
 2.40 
 
 2.55 
 
 .90 
 
 .15 
 
 .60 
 
 3.00 
 
 2.20 
 
 .15 
 
 .50 
 
 .40 
 
 3.00 
 
 1.30 
 
 7.50 
 
 .90 
 
 .15 
 
 .50 
 
 .75 
 
 2.00 
 
 .10 
 
 2.90 
 
 3.05 
 
 5.00 
 
 1.00 
 
 4.00 
 
 .65 
 
 .15 
 
 .35 
 
 1.25 
 
 3.35 
 
 .10 
 
 1.85 
 
 1.65 
 
 8.00 
 
 .50 
 
 3.00 
 
 .60 
 
 .15 
 
 .30 
 
 1.45 
 
 5.00 
 
 .10 
 
 1.15 
 
 .80 
 
 2.55 
 
 .35 
 
 2.20 
 
 .80 
 
 .15 
 
 .30 
 
 1.40 
 
 .95 
 
 .10 
 
 1.00 
 
 .70 
 
 2.65 
 
 .30 
 
 1.50 
 
 .80 
 
 .15 
 
 .30 
 
 9.00 
 
 .90 
 
 .10 
 
 .80 
 
 .55 
 
 4.30 
 
 .30 
 
 .95 
 
 1.00 
 
 .15 
 
 .30 
 
 8.00 
 
 .80 
 
 .10 
 
 .55 
 
 .40 
 
 1.50 
 
 .30 
 
 .90 
 
 1.00 
 
 .15 
 
 .50 
 
 7.00 
 
 .80 
 
 .10 
 
 .45 
 
 .55 
 
 1.05 
 
 .30 
 
 4.00 
 
 .90 
 
 .15 
 
 .55 
 
 4.00 
 
 .70 
 
 .10 
 
 .40 
 
 .55 
 
 .80 
 
 .30 
 
 9.00 
 
 .50 
 
 .15 
 
 .55 
 
 2.55 
 
 .60 
 
 .15 
 
 8.00 
 
 .50 
 
 .60 
 
 .45 
 
 7.00 
 
 .35 
 
 .15 
 
 2.55 
 
 1.50 
 
 .60 
 
 .15 
 
 4.00 
 
 .40 
 
 1.40 
 
 1.15 
 
 2.65 
 
 .30 
 
 .20 
 
 6.05 
 
 1.10 
 
 .55 
 
 .15 
 
 1.25 
 
 .55 
 
 .80 
 
 .55 
 
 2.75 
 
 .20 
 
 .20 
 
 6.05 
 
 .65 
 
 .40 
 
 .15 
 
 .80 
 
 .60 
 
 .50 
 
 .80 
 
 1.65 
 
 .20 
 
 .10 
 
 1.50 
 
 2.05 
 
 .40 
 
 .15 
 
 .45 
 
 1.00 
 
 .50 
 
 .80 
 
 1.05 
 
 .20 
 
 .10 
 
 1.00 
 
 .95 
 
 .40 
 
 .15 
 
 .40 
 
 .50 
 
 .80 
 
 .60 
 
 3.85 
 
 .20 
 
 .10 
 
 1.75 
 
 1.30 
 
 .35 
 
 .15 
 
 .40 
 
 .60 
 
 .50 
 
 2.50 
 
 6.00 
 
 .20 
 
 .10 
 
 1.75 
 
 1.15 
 
 .30 
 
 .15 
 
 .40 
 
 1.05 
 
 .30 
 
 1.15 
 
 3.05 
 
 .20 
 
 .30 
 
 1.75 
 
 1.25 
 
 .30 
 
 .15 
 
 .40 
 
 1.20 
 
 .50 
 
 1.50 
 
 6.00 
 
 .20 
 
 1.40 
 
 1.75 
 
 1.05 
 
 .30 
 
 .15 
 
 .40 
 
 .50 
 
 .40 
 
 2.90 
 
 2.65 
 
 .20 
 
 6.00 
 
 1.20 
 
 2.90 
 
 .30 
 
 .15 
 
 .40 
 
 .40 
 
 .40 
 
 3.00 
 
 2.55 
 
 .20 
 
 10.00 
 
 1.20 
 
 2.30 
 
 .30 
 
 .20 
 
 .40 
 
 .30 
 
 .75 
 
 6.00 
 
 1.65 
 
 .20 
 
 12.00 
 
 1.50 
 
 1.40 
 
 .30 
 
 .20 
 
 .40 
 
 .30 
 
 .40 
 
 10.00 
 
 2.55 
 
 .20 
 
 8.00 
 
 1.40 
 
 2.00 
 
 .20 
 
 .40 
 
 .75 
 
 .40 
 
 .35 
 
 3.35 
 
 1.80 
 
 .20 
 
 3.00 
 
 1.25 
 
 2.55 
 
 .20 
 
 .55 
 
 .65 
 
 .30 
 
 .30 
 
 1.25 
 
 1.15 
 
 .20 
 
 2.00 
 
 .60 
 
 2.75 
 
 .20 
 
 .40 
 
 .55 
 
 .30 
 
 .30 
 
 1.05 
 
 1.05 
 
 .20 
 
 1.00 
 
 .50 
 
 1.65 
 
 .20 
 
 .80 
 
 .50 
 
 •■90 
 
 .30 
 
 12.00 
 
 1.00 
 
 .20 
 
 1.00 
 
 .40 
 
 1.40 
 
 .20 
 
 .45 
 
 .40 
 
 .70 
 
 .25 
 
 5.00 
 
 1.20 
 
 .20 
 
 1.00 
 
 .30 
 
 1.00 
 
 .20 
 
 .40 
 
 .40 
 
 .50 
 
 .25 
 
 5.00 
 
 1.40 
 
 .15 
 
 
 .65 
 
 1.20 
 
 .15 
 
 .40 
 
 .40 
 
 .40 
 
 2.65 
 
 4.00 
 
 1.50 
 
 .15 
 
 
 10.90 
 
 
 .15 
 
 
 .30 
 
 .50 
 
 
 3.50 
 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 4.00 
 7.00 
 2.30 
 2.65 
 1.40 
 
 1.00 
 1.05 
 1.75 
 1.25 
 1.00 
 
 .80 
 .65 
 .55 
 .60 
 .75 
 
 1.45 
 
 .60 
 
 .55 
 
 1.50 
 
 4.30 
 
 1.30 
 4.30 
 7.50 
 5.80 
 2.30 
 
 3.00 
 1.65 
 1.25 
 1.25 
 1.00 
 1.00 
 
 Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
ISLAND OF HAWAII. 273 
 
 Monthly discharge at station No. 34 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912, 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 1.90 
 2.29 
 4.25 
 
 .42 
 1.67 
 1.58 
 2.45 
 
 .82 
 
 Run-off 
 (total in 
 acre-feet). 
 
 117.00 
 137. 00 
 262. 00 
 
 25.80 
 96.10 
 97.20 
 146. 00 
 50.40 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.22 
 1.02 
 .67 
 1.44 
 2.37 
 2.94 
 2.11 
 
 1.47 
 
 Run-off 
 (total in 
 acre-feet). 
 
 13.10 
 62.70 
 41.20 
 85.70 
 146. 00 
 175. 00 
 130. 00 
 
 1,070.00 
 
 Discharge measurements at station No. 35 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.21 
 .35 
 
 Sec.-ft. 
 
 Nov. 22.. 
 
 Feet. 
 0.34 
 .31 
 
 Sec.-ft. 
 
 Oct. 25 
 
 
 Dec. 12 
 
 
 
 
 
 
 Note. — Bed of stream of sand and silt; shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 35 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 
 
 0.42 
 .38 
 
 0.30 
 
 
 2 
 
 
 
 
 
 
 
 
 
 
 
 3 
 
 0.35 
 («) 
 
 («) 
 
 .36 
 .38 
 .41 
 .40 
 .38 
 
 (a) 
 
 00 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 
 0.-30 
 .30 
 (a) 
 
 0.32 
 .36 
 .34 
 
 .36 
 
 
 
 0.41 
 .39 
 .35 
 
 .15 
 
 0.52 
 .38 
 
 ""."32" 
 
 
 
 31 
 
 4 
 
 0.65 
 .40 
 
 "(a)" 
 
 "W 
 
 "6." 33" 
 
 .33 
 .39 
 .36 
 .31 
 
 .30 
 .35 
 .31 
 .31 
 .25 
 
 .30 
 
 .31 
 .30 
 
 ""."46' 
 
 .38 
 
 5 
 
 .30 
 
 6 
 
 30 
 
 7 
 
 "W 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 0. 31 
 .62 
 
 .32 
 
 ""*25" 
 
 .30 
 .42 
 .35 
 .36 
 
 .30 
 .30 
 .55 
 
 ""."40" 
 .38 
 .32 
 .25 
 
 .44 
 
 .31 
 
 8.: 
 
 
 
 .34 
 
 9... 
 
 .36 
 .39 
 
 .31 
 .40 
 .51 
 .51 
 
 .38 
 
 .35 
 .49 
 
 ....... 
 
 .34 
 .30 
 
 .44 
 
 
 
 
 
 .38 
 .35 
 
 31 
 
 10 
 
 .42 
 
 .38 
 .39 
 
 "".31 
 
 .38 
 
 .32 
 
 ■"."34' 
 .32 
 .33 
 
 .45 
 .37 
 .33 
 
 
 
 .18 
 
 31 
 
 11 
 
 
 
 31 
 
 12 
 
 
 
 
 .15 
 
 .37 
 
 .31 
 
 13 
 
 (a) 
 
 0.28 
 
 .34 
 
 .30 
 
 14 
 
 .32 
 
 15 
 
 
 .25 
 
 
 .32 
 .30 
 
 .34 
 
 16 
 
 .34 
 
 17 
 
 .15 
 
 (a) 
 
 
 .31 
 
 18 
 
 
 
 .48 
 
 .28 
 .30 
 .29 
 
 .30 
 .30 
 .29 
 .29 
 
 .38 
 .38 
 .55 
 
 '""."36' 
 
 .34 
 
 .42 
 
 .49 
 
 *":40" 
 
 .40 
 .32 
 .38 
 
 32 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .31 
 
 
 
 32 
 
 20 
 
 
 I 
 
 33 
 
 21 
 
 
 (a) 
 
 
 
 .32 
 
 22 
 
 
 .30 
 
 
 23 
 
 (a) 
 
 
 
 
 24 
 
 
 .35 
 
 .25 
 
 
 25..... 
 
 
 .45 
 
 .30 
 .15 
 (a) 
 
 (a) 
 .42 
 .54 
 
 .34 
 
 .41 
 .34 
 .32 
 
 (a) 
 
 (a) 
 
 (a) 
 .31 
 (0) 
 
 .30 
 
 .30 
 .30 
 
 36 
 
 26 
 
 
 
 .32 
 
 .32 
 
 .16 
 .35 
 
 .25 
 
 
 27 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 
 "".36 
 
 28.. 
 
 
 
 .33 
 
 29 
 
 .30 
 
 
 
 
 
 .32 
 
 30 
 
 
 
 
 
 .40 
 
 "".'46" 
 
 .35 
 
 
 31 
 
 
 (a) 
 
 
 ■i 
 
 
 
 
 
 
 1 
 
 
 
 
 14694°— wsp 336—14- 
 
 -18 
 
 Channel dry. 
 
274 
 
 Daily discharge, in second-feet, at station No. 35 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.05 
 
 
 0.05 
 
 0.05 
 
 0.10 
 
 0.05 
 
 0.05 
 
 (a) 
 
 
 
 
 
 2 
 
 
 
 
 
 3. . 
 
 .05 
 
 
 
 
 
 
 
 0.10 
 .05 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 .05 
 .05 
 
 
 
 
 
 4 
 
 
 
 .05 
 
 
 
 
 
 
 
 
 
 5 
 
 
 
 
 .10 
 .20 
 
 
 
 
 
 
 
 6 
 
 .05 
 
 
 
 
 
 
 (a) 
 
 
 
 7 
 
 
 .05 
 
 
 
 .05 
 (a) 
 (a) 
 
 
 
 8 
 
 
 
 
 
 
 
 (a) 
 
 
 
 9 
 
 
 
 
 
 
 
 
 
 10.. 
 
 .05 
 
 
 
 
 
 
 
 
 
 
 11 
 
 
 
 
 
 
 
 
 
 
 
 12 
 
 
 
 .05 
 .10 
 .10 
 
 .05 
 
 
 .20 
 
 
 .05 
 .05 
 .05 
 (a) 
 
 
 
 
 
 
 13 
 
 
 
 
 
 
 
 
 14 
 
 
 
 
 
 
 
 
 
 
 
 15 
 
 
 
 
 
 
 
 
 
 
 
 16 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 ....... 
 
 
 
 
 
 
 
 
 18 
 
 
 
 
 
 
 
 .05 
 
 
 
 
 
 19 
 
 
 0.05 
 .20 
 
 .40 
 .50 
 .30 
 .10 
 .05 
 
 
 
 
 
 
 
 
 
 20 
 
 
 
 i 
 
 
 
 
 
 
 
 
 21 
 
 
 
 | 
 
 
 (a) 
 
 
 
 
 
 
 22 
 
 
 
 i 
 
 
 .05 
 
 (a) 
 
 
 
 
 
 23 
 
 
 
 i 
 
 
 (a) 
 
 
 
 
 
 24 
 
 
 
 i 
 
 
 
 
 
 
 25 
 
 
 
 i 
 
 
 
 (a) 
 
 
 
 
 
 26 
 
 
 .05 
 
 1 
 
 
 
 
 
 
 
 27 
 
 
 
 1 
 
 
 
 .05 
 
 (a) 
 
 (a) 
 (a) 
 
 
 
 
 28 
 
 
 
 
 I 
 
 
 (a) 
 
 
 
 
 29. . 
 
 
 .05 
 
 
 
 
 
 
 
 30 
 
 
 .05 
 .10 
 
 .05 
 
 .05 
 
 
 
 
 
 
 31 
 
 
 
 
 .05 
 
 
 
 
 
 
 
 
 1 
 
 
 
 
 
 
 
 a Channel dry. 
 Monthly discharge at station No. 35 at 2,700-foot level, near Silo, Hawaii, for 1911-12. 
 
 Month. 
 
 October . . . 
 November. 
 December . 
 
 1911. 
 
 January . . 
 February. 
 
 March 
 
 April 
 
 May 
 
 1912. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 a 0.02 
 a. 03 
 a. 04 
 
 .01 
 .06 
 .05 
 .05 
 .00 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.23 
 1.79 
 2.46 
 
 .40 
 
 3.60 
 2.80 
 3.00 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August , 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year . 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.050 
 .003 
 .003 
 .003 
 .030 
 .030 
 .040 
 
 03 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 3.00 
 
 .20 
 
 .20 
 
 .20 
 
 1.60 
 
 2.00 
 
 2.40 
 
 23.20 
 
 a Estimated. 
 
 Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
 Discharge measurements at station No. 36 at 2,700-foot level, near Tlilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 
 0.58 
 .55 
 .70 
 
 Sec.-ft. 
 
 
 Nov.22 
 
 Feet. 
 0.69 
 .59 
 
 Sec.-ft. 
 0.02 
 
 Sept. 26 
 
 Dec. 12 
 
 
 
 Oct. 25 
 
 0.02 
 
 
 
 
 
 Note.— Bed of stream of sand and silt; shifting. One channel at all stages, 
 
ISLAND OF HAWAII. 
 
 275 
 
 Daily gage height, in feet, at station No. 36 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.54 
 
 
 0.72 
 .70 
 
 0.72 
 
 
 
 
 
 
 
 
 
 
 
 3 
 
 0.48 
 .45 
 .45 
 
 .48 
 .50 
 .52 
 .51 
 .50 
 
 .45 
 .42 
 .40 
 
 .35 
 
 .30 
 
 "W 
 
 (a) 
 
 0.64 
 .62 
 .61 
 
 0.71 
 
 .73 
 
 . .71 
 
 .72 
 
 
 
 0.78 
 
 .74 
 .72 
 
 .72 
 ....... 
 
 .70 
 .64 
 
 1.00 
 .74 
 .62 
 
 ""."62" 
 .59 
 .64 
 .65 
 
 
 
 0.72 
 
 4 
 
 0.85 
 .69 
 
 ' "6." 24" 
 
 "'".*2i" 
 
 "6." 75" 
 
 .74 
 .79 
 .70 
 .70 
 
 .67 
 .66 
 .69 
 .65 
 .64 
 
 .64 
 
 .65 
 .62 
 
 .61 
 
 ""'."66" 
 
 "*."6i" 
 
 .62 
 .73 
 .62 
 .62 
 
 "".n 
 
 ""."64" 
 .63 
 
 .84 
 
 ....... 
 
 .70 
 
 .66 
 .62 
 
 .72 
 
 .72 
 
 5. 
 
 .67 
 
 6 
 
 .62 
 
 7 
 
 (o) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 0.48 
 .49 
 
 .60 
 .61 
 .62 
 
 .63 
 
 .74 
 .83 
 
 .71 
 
 .69 
 .76 
 
 """.'78' 
 
 .70 
 .68 
 .71 
 
 .62 
 
 g 
 
 
 
 .67 
 
 9 
 
 
 
 
 .64 
 
 10 
 
 .81 
 
 .79 
 .71 
 
 .74 
 .69 
 
 "'.'72" 
 
 .74^ 
 .77 
 
 .81 
 .78 
 .74 
 
 
 
 .62 
 
 11 
 
 
 
 .61 
 
 12 
 
 
 
 
 .58 
 .58 
 
 .60 
 
 13 
 
 .61 
 
 .39 
 
 .72 
 
 .57 
 
 
 .56 
 
 15 
 
 
 .35 
 
 .70 
 
 .63 
 
 .60 
 
 .58 
 
 16 
 
 .61 
 
 17 
 
 .54 
 
 .48 
 
 
 .60 
 
 18. 
 
 
 
 .63 
 
 .64 
 .62 
 .61 
 
 .61 
 .64 
 .62 
 .61 
 
 .55 
 
 .55 
 .54 
 .52 
 
 .72 
 
 .72 
 .77 
 .82 
 
 *"*."76" 
 
 .70 
 
 .78 
 
 .74 
 ....... 
 
 .70 
 .70 
 .72 
 
 .55 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (o) 
 (a) 
 
 .54 
 
 
 
 .62 
 
 20 
 
 
 
 
 .72 
 
 21 
 
 
 .39 
 
 .60 
 
 """."58* 
 .56 
 .56 
 .55 
 
 .54 
 -.61 
 
 .62 
 
 22. 
 
 
 23 
 
 .40 
 
 
 .56 
 .75 
 
 .65 
 .59 
 .60 
 .60 
 
 
 
 
 25 
 
 
 .69 
 
 .64 
 .61 
 .61 
 .60 
 .69 
 1.08 
 
 .79 
 
 .76 
 .75 
 .69 
 
 .35 
 "".31 
 
 .68 
 
 .61 
 .69 
 .61 
 
 .64 
 
 .64 
 .62 
 
 .64 
 
 26 
 
 
 
 
 27.... 
 
 (a) 
 
 («) 
 
 (a) 
 (a) 
 
 
 .66 
 
 28 
 
 .61 
 
 29. . 
 
 
 
 .61 
 
 30 
 
 
 
 
 '""."74" 
 
 .68 
 
 
 31 
 
 
 .30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 Monthly discharge at station No. 36 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 October . . . 
 November. 
 December . 
 
 1911. 
 
 January . . 
 February. 
 
 March 
 
 April 
 
 ay 
 
 1912. 
 
 Ma 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 a 0.03 
 a. 04 
 a. 25 
 
 .01 
 .03 
 .33 
 
 .48 
 .25 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.84 
 2.38 
 15.70 
 
 1.80 
 20.20 
 28.60 
 15.10 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year . 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.10 
 .36 
 .07 
 .03 
 .40 
 .37 
 .31 
 
 .25 
 
 6.00 
 22.20 
 
 4.40 
 16.00 
 24.80 
 22.00 
 18.80 
 
 180. 00 
 
 a Estimated. 
 
 Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
 Discharge measurements at station No. 37 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.34 
 .35 
 1 .40 
 
 Sec.-ft. 
 
 
 Nov. 22. 
 
 Feet. 
 0.39 
 .31 
 
 Sec.-ft. 
 0.02 
 
 Sept. 26 
 
 Dec. 12. 
 
 
 
 Oct. 25 
 
 o.oi 
 
 
 
 
 
 Note.— Bed of stream of sand and silt; shifting. One channel at all stages. 
 
276 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 37 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Biltkov, Goorko, BelayefE, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.30 
 
 
 0.43 
 .40 
 
 0.40 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.55 
 .52 
 .51 
 
 .52 
 .55 
 .61 
 
 .60 
 .58 
 
 .56 
 .55 
 .54 
 .52 
 .51 
 
 .50 
 
 "(a)" 
 (a) 
 
 0.57 
 .55 
 .53 
 
 0.61 
 .62 
 .61 
 
 .61 
 
 
 
 0.62 
 .61 
 .59 
 
 .58 
 
 """.'55" 
 
 .54 
 .58 
 
 .75 
 .46 
 .44 
 
 ""."39' 
 
 .37 
 .40 
 
 ' .38 
 
 
 
 0.40 
 
 4.. 
 
 0.85 
 
 .79 
 
 "6." 25' 
 
 "(a)" 
 
 "6." 46' 
 
 .40 
 .42 
 .39 
 .38 
 
 .32 
 .41 
 .31 
 .32 
 .30 
 
 .40 
 
 .38 
 
 .38 
 
 .38 
 
 '"."38' 
 
 "'."38" 
 
 .38 
 .41 
 .40 
 .42 
 
 "".'39" 
 
 "*."36" 
 
 .37 
 .46 
 
 ------- 
 
 .41 
 .38 
 .36 
 
 .46 
 
 .39 
 
 5. .. 
 
 .36 
 
 6 
 
 .35 
 
 7 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 
 0.50 
 .48 
 .45 
 
 .45 
 .45 
 .44 
 .55 
 .59 
 
 .55 
 
 .35 
 
 8 
 
 
 
 .38 
 
 9 
 
 .56 
 .54 
 
 .58 
 .61 
 .66 
 .65 
 .59 
 
 .58 
 .61 
 
 "".60 
 
 .59 
 .55 
 .59 
 
 
 
 
 .37 
 
 10 
 
 .62 
 
 .62 
 .60 
 
 ""."54" 
 .60 
 
 .58 
 
 '"."58" 
 .60 
 .60 
 
 .64 
 .62 
 .60 
 
 
 
 .36 
 
 11 
 
 
 
 .34 
 
 12 
 
 
 
 
 .38 
 
 .40 
 
 .34 
 
 13 
 
 .60 
 
 .35 
 
 .40 
 
 .34 
 
 14 
 
 .34 
 
 15 
 
 
 .30 
 
 .38 
 
 .40 
 .37 
 
 .36 
 
 16 
 
 .40 
 
 17 
 
 .50 
 
 .40 
 
 
 .34 
 
 18 
 
 
 
 .41 
 
 .39 
 .39 
 .39 
 
 .39 
 .40 
 .38 
 .35 
 
 .35 
 .35 
 .36 
 .36 
 .45 
 
 .40 
 .41 
 
 .50 
 
 """."42" 
 
 .39 
 
 .40 
 
 .41 
 
 "".'46' 
 
 .40 
 .40 
 .40 
 
 .34 
 
 19 
 
 .48 
 .46 
 
 .45 
 .45 
 .45 
 .45 
 
 .48 
 
 
 
 .39 
 
 20 
 
 
 
 
 .42 
 
 21 
 
 
 .35 
 
 .35 
 
 ""."35' 
 .34 
 .35 
 .32 
 
 .30 
 .39 
 
 .37 
 
 22 
 
 
 23 
 
 .45 
 
 
 .35 
 .49 
 
 .40 
 .34 
 .32 
 
 .44 
 
 
 24 
 
 
 25 : 
 
 
 .58 
 
 .56 
 .54 
 .51 
 .50 
 .53 
 .70 
 
 .62 
 
 .65 
 .63 
 .60 
 
 .40 
 ""."38" 
 
 .55 
 
 .58 
 .61 
 .55 
 
 .38 
 
 .36 
 
 .32 
 
 26 
 
 
 
 
 27 
 
 .50 
 
 .49 
 .45 
 .44 
 
 
 .39 
 
 28 
 
 
 
 .34 
 
 29 
 
 
 
 .34 
 
 30 
 
 
 
 
 ----- 
 
 .40 
 
 
 31 
 
 
 .30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily 
 
 a Channel dry. 
 
 in second-feet, at station No. 37 at 2,700-foot level, near Hilo, Hawaii, 
 for 1911 . 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 (a) 
 («) 
 (•) 
 
 0.05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .10 
 
 0.05 
 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 .05 
 
 .10 
 .05 
 .10 
 .16 
 .45 
 
 16 
 
 
 0.05 
 
 .05 
 .05 
 .05 
 
 (a) 
 
 («) 
 
 00 
 
 («) 
 
 (a) 
 (a) 
 
 .05 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 0.05 
 .05 
 .05 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.12 
 
 2 
 
 
 17 
 
 
 .34 
 
 3 
 
 
 18 
 
 
 .34 
 
 4 
 
 
 19 
 
 
 .32 
 
 5 
 
 
 20 
 
 
 .12 
 
 6 
 
 
 21 
 
 
 .10 
 
 7 
 
 
 22 
 
 
 .05 
 
 8 
 
 
 23 
 
 
 .05 
 
 9 
 
 
 24 
 
 
 .05 
 
 10... 
 
 
 25 
 
 
 .25 
 
 11 
 
 
 26 
 
 
 .20 
 
 12 
 
 
 27 
 
 0.10 
 .05 
 .05 
 .05 
 
 .20 
 
 13 
 
 
 28 
 
 .18 
 
 14 
 
 
 29 
 
 .24 
 
 15... 
 
 
 30 
 
 .20 
 
 
 
 31 
 
 .18 
 
 
 
 
 
 a Channel dry. 
 
ISLAND OP HAWAII. 
 
 277 
 
 Daily discharge, in second-feet, at station No. 37 at 2,700-foot level, near Kilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 
 
 
 
 
 2 
 
 
 
 
 
 
 
 
 
 
 
 
 
 3 
 
 0.05 
 .05 
 .05 
 
 .05 
 .05 
 .10 
 .10 
 .10 
 
 .10 
 .05 
 
 .05 
 .05 
 
 
 0.10 
 .05 
 .05 
 
 0.10 
 .10 
 .10 
 
 .10 
 
 
 
 0.10 
 .10 
 .10 
 
 .10 
 
 0.15 
 
 
 
 
 
 4 
 
 0.25 
 
 
 
 
 
 
 5 
 
 
 
 
 
 
 6 
 
 .20 
 
 
 
 
 
 
 
 7 
 
 
 .05 
 
 
 
 
 
 
 g 
 
 
 
 
 .05 
 .05 
 .05 
 
 
 
 
 
 
 9 
 
 
 .io 
 
 .05 
 
 .10 
 .10 
 
 .10 
 
 .10 
 .10 
 
 
 
 
 
 
 
 
 
 10 
 
 .10 
 
 .10 
 .10 
 
 .05 
 
 .10 
 
 ""."io" 
 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 
 
 
 
 
 
 
 
 11 
 
 
 
 
 
 
 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 14 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 17 
 
 .05 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 19 
 
 
 .05 
 .10 
 
 ■"."io" 
 
 .10 
 .05 
 .10 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 21 
 
 
 
 
 
 
 
 
 
 
 22 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 24 
 
 
 
 
 
 
 
 
 
 
 
 25 
 
 
 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .15 
 
 .10 
 
 .10 
 .10 
 .10 
 
 
 0.05 
 
 .10 
 .05 
 
 
 
 
 
 
 
 26 
 
 
 
 
 
 
 
 
 
 27 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 29 .. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
 near station No. 50. 
 
 Monthly discharge at station No. 37 at 2,700-foot level, near Kilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.03 
 .06 
 .14 
 
 .05 
 .15 
 
 .10 
 .07 
 
 Run-off 
 (total in 
 acre-feet). 
 
 2.00 
 3.48 
 8.65 
 
 3.07 
 8.63 
 4.92 
 5.95 
 4.30 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 0.03 
 .06 
 .06 
 .07 
 
 .10 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.79 
 
 3! 69 
 4.17 
 4.92 
 4.76 
 6.15 
 
 55.90 
 
 Discharge measurements at station No. 38 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.J 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.87 
 .75 
 .81 
 
 Sec-ft. 
 0.15 
 .02 
 .12 
 
 Nov. 22... ... . 
 
 Feet. 
 0.82 
 .75 
 
 Sec-ft. 
 0.10 
 
 Sept. 26 
 
 Dec. 12 
 
 .06 
 
 Oct. 25 
 
 
 
 
 
 Note.— Bed of stream is composed of sand, gravel, and some small cobbles; somewhat rough and prob- 
 ably only slightly shifting. One channel at all stages. 1 
 
278 
 
 Daily gage height, in feet, at station No. 38 at 2, 700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.75 
 
 
 0.80 
 .81 
 
 0.84 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.76 
 
 .74 
 .72 
 
 .75 
 
 .75 
 j 76 
 .74 
 .72 
 
 .71 
 .70 
 .70 
 
 .68 
 
 .68 
 
 (a) 
 
 0.78 
 .75 
 .71 
 
 0.83 
 .85 
 
 .84 
 
 .86 
 
 
 
 0.89 
 .84 
 .82 
 
 .80 
 
 """."78" 
 .77 
 .79 
 
 1.15 
 
 .89 
 .80 
 
 "~'.W 
 .79 
 .80 
 .80 
 
 
 
 0.84 
 
 4 
 
 1.05 
 
 .82 
 
 "6." 52' 
 ""."56" 
 
 ""6." 82' 
 
 .84 
 .87 
 .82 
 .79 
 
 .78 
 .82 
 .79 
 .78 
 .76 
 
 .80 
 
 .77 
 .75 
 
 .74 
 
 '""."74" 
 
 "".76 
 
 .77 
 .80 
 .76 
 .82 
 
 '"."si" 
 
 ""."78" 
 .79 
 .92 
 
 """."84" 
 .88 
 
 .82 
 .80 
 
 .90 
 
 .84 
 
 5 
 
 .81 
 
 6 
 
 .80 
 
 7 
 
 (a) 
 (a) 
 
 (a) 
 {a) 
 0.79 
 
 .66 
 .65 
 .64 
 
 .78 
 .80 
 
 .75 
 
 .80 
 
 8 
 
 ::::::::: 
 
 .84 
 
 9 
 
 .80 
 .80 
 
 .79 
 .89 
 .97 
 
 .84 
 
 .80 
 1.04 
 
 "i.'os" 
 
 .94 
 .89 
 .91 
 
 
 
 
 .81 
 
 10 
 
 .98 
 
 .89 
 
 .85 
 
 .88 
 .82 
 
 
 
 .80 
 
 11 
 
 
 
 .78 
 
 12 
 
 
 
 
 .78 
 .80 
 
 .75 
 
 13 
 
 .71 
 
 .61 
 
 .80 
 
 .74 
 
 
 .78 
 
 15 
 
 .71 
 
 .59 
 .70 
 
 .79 
 
 .82 
 .79 
 
 .79 
 
 16 
 
 .82 
 
 
 .77 
 
 18 
 
 
 .82 
 .83 
 .80 
 
 .95 
 .88 
 .80 
 
 .73 
 
 
 
 .82 
 
 .79 
 
 .77 
 .75 
 
 .78 
 .79 
 .76 
 .75 
 
 .71 
 
 .74 
 .72 
 .72 
 .85 
 
 .81 
 
 .81 
 .92 
 
 ""."86* 
 .80 
 
 .78 
 
 .89 
 
 '".'84' 
 
 .80 
 
 .82 
 .87 
 
 .78 
 
 
 .66 
 .66 
 
 .65 
 .65 
 .65 
 .64 
 
 
 
 .82 
 
 20 
 
 
 
 
 
 .89 
 
 21 
 
 
 .68 
 
 .78 
 
 ---.---■ 
 
 .75 
 .75 
 
 .75 
 
 .74 
 .80 
 
 .81 
 
 22 
 
 
 23 
 
 .70 
 
 
 .75 
 
 .80 
 
 .81 
 
 .82 
 .78 
 .80 
 
 
 
 25 
 
 
 .85 
 
 .79 
 .76 
 .74 
 .72 
 .93 
 1.27 
 
 .88 
 
 .86 
 .82 
 .81 
 
 .70 
 ""."68" 
 
 .80 
 
 .80 
 .82 
 .79 
 
 .80 
 .80 
 
 .82 
 
 26 
 
 
 
 
 
 .66 
 .65 
 .65 
 .64 
 
 
 .84 
 
 28 
 
 
 
 .80 
 
 
 
 
 .80 
 
 30 
 
 
 
 
 '""."86' 
 
 .82 
 
 
 
 
 .59 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 38 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.30 
 .30 
 .30 
 .35 
 .35 
 
 .30 
 .30 
 .30 
 .30 
 .30 
 
 .26 
 .26 
 .28 
 .28 
 .30 
 
 0.05 
 .05 
 .05 
 .10 
 .30 
 
 .35 
 .40 
 .45 
 .50 
 .30 
 
 .35 
 • .40 
 .45 
 .50 
 .55 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .10 
 .05 
 .25 
 1.70 
 5.50 
 
 16 
 
 
 0.30 
 
 .30 
 .20 
 .12 
 .10 
 
 .09 
 .09 
 .09 
 .C9 
 .10 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.30 
 .30 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .30 
 .30 
 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 
 1.36 
 
 
 
 17 
 
 
 4.40 
 
 3 
 
 
 18 
 
 
 4.60 
 
 4 
 
 
 19 
 
 
 4.30 
 
 5 
 
 
 20 
 
 
 .80 
 
 6 
 
 
 21. 
 
 
 .20 
 
 7 
 
 
 22 
 
 
 .10 
 
 8 ........ 
 
 
 23 
 
 
 .05 
 
 9 
 
 
 24 
 
 
 .05 
 
 10 
 
 
 25 
 
 
 2.30 
 
 11 
 
 
 26 
 
 
 .94 
 
 12 
 
 
 27 
 
 0.70 
 .80 
 .30 
 .30 
 
 .80 
 
 13 
 
 
 28 
 
 .87 
 
 14 
 
 
 29 
 
 2.50 
 
 15 
 
 
 30 
 
 2.00 
 
 
 
 31 
 
 1.50 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 279 
 
 Daily discharge, in second-feet, at station No. 38 at 2,700-foot level,,near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.10 
 .10 
 .10 
 .05 
 .05 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .04 
 
 .04 
 .04 
 .03 
 .03 
 .03 
 
 .02 
 .02 
 .02 
 .02 
 .02 
 
 .03 
 .03 
 .02 
 .02 
 .02 
 .02 
 
 0.01 
 .01 
 .01 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 ( a ) 
 
 14 
 
 (a) 
 
 n 
 
 .10 
 .05 
 .05 
 
 .03 
 .02 
 .02 
 .10 
 .10 
 
 .30 
 1.00 
 2.00 
 1.00 
 
 .40 
 
 .20 
 .30 
 .30 
 .40 
 
 0.20 
 .20 
 .10 
 .10 
 .05 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .30 
 .65 
 .75 
 .20 
 
 .10 
 1.10 
 1.80 
 1.40 
 1.15 
 
 .50 
 .30 
 .35 
 .20 
 .20 
 
 .10 
 .10 
 .05 
 .05 
 .45 
 3.20 
 
 1.50 
 .50 
 .15 
 .20 
 .20 
 
 .20 
 2.00 
 1.50 
 1.08 
 
 .70 
 
 .30 
 .20 
 .20 
 .10 
 .25 
 
 .15 
 .50 
 .15 
 .15 
 .10 
 
 .55 
 .25 
 .10 
 .20 
 .25 
 
 .20 
 .15 
 .10 
 .10 
 .10 
 
 0.30 
 
 .50 
 
 .50 
 
 1.15 
 
 1.50 
 
 .15 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .20 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 
 "\"io" 
 
 .10 
 .15 
 .10 
 
 0.10 
 .20 
 .30 
 .20 
 .15 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .50 
 .30 
 .10 
 .30 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .20 
 
 2.00 
 .30 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .15 
 
 .10 
 .10 
 .15 
 .40 
 .20 
 
 .10 
 .05 
 .10 
 .10 
 .10 
 
 .05 
 .10 
 .30 
 .20 
 .20 
 .20 
 
 0.60 
 1.00 
 2.00 
 3.00 
 .15 
 
 .20 
 .25 
 .15 
 .10 
 .10 
 
 .10 
 .15 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .20 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .15 
 .15 
 
 .10 
 .80 
 .10 
 .10 
 .40 
 
 .40 
 
 1.00 
 
 2.50 
 
 .20 
 
 .10 
 
 .10 
 3.50 
 
 l.op 
 
 1.00 
 .80 
 .20 
 
 0.20 
 .10 
 
 1.50 
 .40 
 .10 
 
 .10 
 .10 
 .10 
 .40 
 2.50 
 
 2.00 
 
 • .20 
 
 .25 
 
 .15 
 
 .10 
 
 .30 
 1.00 
 .30 
 .80 
 .20 
 
 .10 
 .15 
 .25 
 .20 
 .10 
 
 .10 
 .15 
 .50 
 .20 
 
 .15 
 
 1.00 
 
 2 
 
 2.00 
 
 3 
 
 .20 
 
 4 
 
 .20 
 
 5... 
 
 .10 
 
 6.... 
 
 .10 
 
 7 
 
 .10 
 
 8 
 
 .20 
 
 9 
 
 .10 
 
 10 
 
 .10 
 
 11 
 
 .10 
 
 12 
 
 .10 
 
 13 
 
 .05 
 
 14 
 
 .10 
 
 15 
 
 .10 
 
 16 
 
 .15 
 
 
 .10 
 
 18 
 
 .10 
 
 19 
 
 .15 
 
 20 
 
 .30 
 
 21 
 
 .10 
 
 22 
 
 1.00 
 
 23 
 
 3.00 
 
 24 
 
 2.50 
 
 25 
 
 .15 
 
 26 
 
 .30 
 
 27 
 
 .20 
 
 28 
 
 .10 
 
 29 
 
 .10 
 
 30 
 
 31 
 
 .10 
 .10 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 38 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January.. 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.20 
 .27 
 1.12 
 
 Run-off 
 (total in 
 acre-feet). 
 
 12. SO 
 16.00 
 69.10 
 
 3.07 
 12.70 
 28.30 
 23.80 
 11.10 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.05 
 .14 
 .20 
 .32 
 .44 
 .42 
 .42 
 
 .28 
 
 2.98 
 8.61 
 12.30 
 19.00 
 27.10 
 25.00 
 25.80 
 
 200.00 
 
 Discharge measurements at station No. 39 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage, 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.82 
 .80 
 .99 
 
 Sec.-ft. 
 0.20 
 .10 
 .53 
 
 Nov. 22 
 
 Feet. 
 0.99 
 .90 
 
 Sec-ft. 
 0.83 
 
 Sept. 26 
 
 Dec. 12 
 
 .23 
 
 Oct. 25... 
 
 
 
 
 
 
 
 Note. — Bed of stream is composed of sand, gravel, and some small cobbles; somewhat rough and prob- 
 ably shifting. One channel at all stages. 
 
280 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 39 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.78 
 
 
 0.92 
 .93 
 
 1.02 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.85 
 
 .82 
 .81 
 
 .84 
 .86 
 .91 
 .88 
 .85 
 
 .84 
 .82 
 .81 
 .80 
 .79 
 
 .78 
 
 "6."65" 
 .65 
 
 0.83 
 .81 
 .80 
 
 0.84 
 .88 
 .92 
 
 .91 
 
 
 
 1.00 
 .92 
 .90 
 
 .89 
 
 "*"."82" 
 .80 
 .85 
 
 1.10 
 .98 
 .83 
 
 ".""."84" 
 .79 
 .82 
 .80 
 
 
 
 1.00 
 
 4 
 
 1.15 
 1.13 
 
 "6.'60" 
 """."55" 
 
 "6." 93' 
 
 .90 
 .91 
 
 .87 
 .81 
 
 .79 
 .89 
 .84 
 .80 
 
 .77 
 
 .86 
 
 .89 
 
 .85 
 
 .82 
 
 "".'si' 
 
 """."86" 
 
 .88 
 .89 
 .90 
 .95 
 
 '"i."02" 
 
 """."96" 
 
 .90 
 
 1.12 
 
 ""i."06" 
 
 1.02 
 
 ^5 
 
 .90 
 
 1.12 
 
 1.08 
 
 5 
 
 1.00 
 
 6 
 
 .97 
 
 7 
 
 '"'."62" 
 .62 
 .61 
 
 .61 
 .60 
 
 .81 
 .78 
 .75 
 
 .71 
 .70 
 
 .68 
 .81 
 .90 
 
 .80 
 
 .96 
 
 8 
 
 
 
 1.03 
 
 9 
 
 .82 
 .84 
 
 .84 
 .99 
 .99 
 1.02 
 .93 
 
 .89 
 1.01 
 
 ""."96" 
 
 .90 
 .85 
 .89 
 
 
 
 
 1.00 
 
 10 
 
 1.02 
 
 .98 
 .96 
 
 "".'88* 
 .91 
 
 .89 
 
 "".90 
 
 .89 
 .89 
 
 1.01 
 .97 
 .86 
 
 
 
 .94 
 
 11 
 
 
 
 .92 
 
 12 
 
 
 
 
 .80 
 
 .83 
 
 .90 
 
 13 
 
 .99 
 
 .98 
 
 .89 
 
 .88 
 
 
 .89 
 
 15. 
 
 
 .91 
 
 .82 
 
 .88 
 .80 
 
 .92 
 
 16 
 
 1.00 
 
 17 
 
 .95 
 
 .90 
 
 
 .91 
 
 18 
 
 
 
 .89 
 
 .83 
 
 .81 
 .80 
 
 .80 
 .84 
 .82 
 .81 
 
 .81 
 
 .79 
 .79 
 .79 
 
 .92 
 
 .90 
 
 .91 
 
 1.06 
 
 ""i."io" 
 
 .98 
 .98 
 
 1.09 
 
 "i.'oi" 
 
 1.00 
 
 .99 
 
 1.01 
 
 .90 
 
 19 
 
 .75 
 
 .75 
 
 .74 
 
 .72 
 .71 
 .71 
 
 .96 
 
 
 
 .98 
 
 20 
 
 
 
 
 1.09 
 
 21 
 
 
 .89 
 
 .82 
 
 .75 
 
 .80 
 .75 
 
 .75 
 .84 
 
 1.00 
 
 22 
 
 
 23 
 
 .90 
 
 
 .80 
 .99 
 
 .86 
 .85 
 .80 
 .80 
 
 
 24 . 
 
 
 25 
 
 
 .88 
 
 .84 
 .80 
 .80 
 .79 
 .90 
 1.50 
 
 .98 
 
 .99 
 .99 
 .93 
 
 .84 
 ""\*80" 
 
 .82 
 
 .70 
 .80 
 .72 
 
 .93 
 
 .92 
 .91 
 
 1.02 
 
 26 
 
 
 
 
 27 
 
 .74 
 .72 
 .72 
 .71 
 
 
 1.02 
 
 28 
 
 .92 
 
 29 
 
 
 
 .94 
 
 30 
 
 
 
 
 ""."98" 
 
 1.00 
 
 
 31 
 
 
 .70 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 39 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1;09 
 
 .88 
 .70 
 .76 
 .88 
 1.00 
 
 .52 
 .52 
 .58 
 .64 
 .64 
 
 0.10 
 .10 
 .10 
 .25 
 .40 
 
 .52 
 .64 
 .76 
 .88 
 .46 
 
 .52 
 .64 
 .76 
 .88 
 1.00 
 
 0.16 
 .10 
 .10 
 .13 
 .22 
 
 .10 
 .10 
 .13 
 .22 
 .16 
 
 .25 
 .10 
 
 .52 
 3.00 
 6.08 
 
 16... '.. 
 
 
 0.70 
 .70 
 .40 
 .25 
 .22 
 
 .16 
 .10 
 .10 
 .13 
 
 .13 
 
 .16 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.46 
 .52 
 .58 
 .64 
 .70 
 
 .76 
 
 .82 
 
 .88 
 
 1.00 
 
 1.18 
 
 .46 
 .37 
 .34 
 .28 
 .22 
 
 1.54 
 
 2 
 
 
 17 
 
 
 5.20 
 
 3 
 
 
 18 
 
 
 5.30 
 
 4 
 
 
 19 
 
 
 4.98 
 
 5 
 
 
 20 
 
 
 2.45 
 
 6 ... 
 
 
 21 
 
 
 1.00 
 
 7 
 
 
 22 
 
 
 .46 
 
 8 
 
 
 23 
 
 
 .37 
 
 9 
 
 
 24 
 
 
 .16 
 
 10 
 
 
 25 
 
 
 4.32 
 
 11 
 
 
 26 
 
 
 3.55 
 
 12 
 
 
 27 
 
 1.45 
 1.72 
 1.00 
 1.00 
 
 3.88 
 
 13 
 
 
 28 
 
 3.00 
 
 14 
 
 
 29... 
 
 5.20 
 
 15 
 
 
 30 
 
 4.65 
 
 
 
 31 
 
 4.10 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 281 
 
 Daily discharge, in second-feet, at station No. 39 at 2,700-foot level, near Silo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.20 
 .20 
 .25 
 .15 
 .15 
 
 .20 
 .30 
 .45 
 .35 
 .25 
 
 .20 
 .15 
 .15 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .15 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .15 
 .40 
 
 .80 
 2.00 
 3.00 
 3.00 
 1.00 
 
 .20 
 .60 
 .60 
 .90 
 
 0.40 
 .50 
 .20 
 .15 
 .10 
 
 .10 
 .10 
 .15 
 .15 
 .20 
 
 .20 
 .95 
 .95 
 1.20 
 .60 
 
 .35 
 1.10 
 1.70 
 2.00 
 
 .75 
 
 .40 
 .25 
 .35 
 .20 
 .35 
 
 .20 
 .10 
 .10 
 .10 
 .40 
 6.30 
 
 2.00 
 .80 
 .20 
 .35 
 .50 
 
 .45 
 6.00 
 6.00 
 4.00 
 1.20 
 
 .90 
 
 - .75 
 
 1.00 
 
 .35 
 
 .45 
 
 .35 
 .30 
 .40 
 .35 
 .35 
 
 1.10 
 
 .80 
 .30 
 .40 
 .90 
 
 .95 
 .95 
 .60 
 .30 
 .70 
 
 1.50 
 2.00 
 2.00 
 2.45 
 3.00 
 
 2.25 
 1.00 
 .30 
 .20 
 .20 
 
 .10 
 .05 
 .95 
 .60 
 .70 
 
 .90 
 .70 
 .30 
 .75 
 .50 
 
 .30 
 .30 
 .40 
 .80 
 .20 
 
 .20 
 .10 
 .20 
 .40 
 .20 
 .05 
 
 ' 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .10 
 .20 
 .90 
 .60 
 .45 
 
 .40 
 .40 
 .40 
 .40 
 .35 
 
 .35 
 .30 
 .25 
 .20 
 .15 
 
 .05 
 .10 
 .05 
 .05 
 .05 
 
 0.20 
 .50 
 
 1.00 
 .50 
 .40 
 
 .35 
 .30 
 .15 
 .10 
 .25 
 
 2.00 
 .80 
 .35 
 .60 
 .15 
 
 .10 
 .30 
 .30 
 .10 
 .10 
 
 .15 
 .15 
 .10 
 .95 
 .30 
 
 .30 
 .25 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 
 1.90 
 .90 
 .20 
 
 .20 
 .20 
 .10 
 .15 
 .10 
 
 .10 
 .10 
 .20 
 .20 
 .35 
 
 .10 
 .15 
 .35 
 .60 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .20 
 .60 
 .40 
 .20 
 .30 
 
 1.00 
 1.50 
 4.00 
 6.00 
 .60 
 
 .40 
 .45 
 .30 
 .15 
 .10 
 
 .10 
 .35 
 .20 
 .10 
 .10 
 
 .30 
 .10 
 .20 
 .15 
 .10 
 
 .10 
 .20 
 .15 
 .15 
 .15 
 
 .15 
 .10 
 .10 
 .10 
 .50 
 
 0.50 
 .60 
 .50 
 .35 
 .25 
 
 .15 
 .10 
 .15 
 .15 
 .30 
 
 .35 
 .35 
 .40 
 .70 
 .80 
 
 .20 
 2.50 
 .40 
 .45 
 1.55 
 
 1.60 
 
 2.00 
 4.50 
 1.90 
 .90 
 
 .90 
 6.00 
 4.00 
 4.00 
 2.00 
 
 .90 
 
 1.20 
 .60 
 4.00 
 3.00 
 1.20 
 
 .50 
 .40 
 .40 
 2.10 
 5.00 
 
 4.00 
 1.55 
 1.20 
 .70 
 .40 
 
 2.10 
 4.00 
 1.80 
 3.50 
 1.10 
 
 1.00 
 .95 
 1.10 
 1.00 
 .60 
 
 .50 
 .45 
 1.00 
 1.00 
 1.00 
 
 2.00 
 
 2 
 
 3.50 
 
 3 
 
 1.00 
 
 4 
 
 1.70 
 
 5 
 
 1.00 
 
 6 
 
 .80 
 
 7 
 
 .75 
 
 8 
 
 1.25 
 
 9 
 
 1.00 
 
 10 
 
 .65 
 
 11 
 
 .50 
 
 12 
 
 .40 
 
 13 
 
 .35 
 
 14 
 
 .35 
 
 
 .50 
 
 16 
 
 1.00 
 
 17 ; 
 
 .45 
 
 18 
 
 .40 
 
 19.. 
 
 .90 
 
 
 1.80 
 
 21 
 
 1.00 
 
 22 
 
 2.00 
 
 23 
 
 5.00 
 
 24 
 
 4.00 
 
 25 
 
 1.20 
 
 26 
 
 1.50 
 
 27 
 
 1.20 
 
 28 
 
 .50 
 
 29 
 
 .65 
 
 30 
 
 .20 
 
 31 
 
 .20 
 
 
 
 Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 39 at 2,700-foot level, near Eilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May... 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 0.51 
 
 .57 
 
 1.99 
 
 .14 
 .47 
 
 1.12 
 .76 
 
 Run-off 
 (total in 
 acre-feet). 
 
 31.40 
 34.30 
 122.00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.21 
 
 .36 
 
 .28 
 
 .60 
 
 1.27 
 
 1.58 
 
 1.22 
 
 .72 
 
 Run-off 
 (total hi 
 acre-feet). 
 
 12.50 
 22.10 
 17.20 
 35.70 
 78.10 
 94.00 
 75.00 
 
 524.00 
 
 Discharge measurements at station No. 40 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 1.09 
 1.05 
 1.31 
 
 Sec.-ft. 
 
 
 Nov.22 
 
 Feet. 
 1.26 
 1.18 
 
 Sec.-ft. 
 0.19 
 
 Sept. 26 
 
 Dec. 12 
 
 .10 
 
 Oct. 25 
 
 0.40 
 
 
 
 
 
 Note.— Bed of stream of gravel and small cobbles. Probably shifting. One channel at all stages. 
 
282 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 40 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 1.09 
 
 ""i.38* 
 
 1.22 
 1.14 
 
 1.30 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 1.25 
 1.18 
 1.15 
 
 1.22 
 1.25 
 1.32 
 1.30 
 1.25 
 
 1.10 
 1.02 
 1.00 
 .95 
 
 .88 
 
 .85 
 
 "(a)" 
 (a) 
 
 1.16 
 1.13 
 1.12 
 
 1.13 
 1.21 
 1.22 
 
 1.26 
 
 
 
 1.34 
 1.29 
 1.22 
 
 1.20 
 
 ""i.26" 
 
 1.18 
 1.12 
 
 
 
 1.32 
 
 4..: 
 
 1.79 
 1.62 
 
 "(«)" 
 ""(«)" 
 
 1.28 
 1.12 
 
 ""i."i3~ 
 
 1.00 
 1.12 
 1.11 
 
 "i.33" 
 
 1.30 
 1.31 
 1.25 
 1.20 
 
 1.04 
 
 ""i.32" 
 
 1.40 
 
 5 
 
 1.28 
 
 6 
 
 1.28 
 
 7 
 
 (a) 
 (a) 
 
 n 
 
 («) 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 
 00 
 (a) 
 
 1.12 
 
 
 1.21 
 1.22 
 1.41' 
 
 1.30 
 
 8 
 
 
 
 1.30 
 
 9 
 
 1.11 
 
 1.14 
 
 1.11 
 1.31 
 1.44 
 1.51 
 1.29 
 
 1.20 
 1.44 
 
 "1.38" 
 
 1.34 
 1.19 
 1.30 
 
 
 
 
 1.30 
 
 10 
 
 1.36 
 
 1.34 
 1.22 
 
 ""i."i6 _ 
 
 1.26 
 
 1.19 
 
 'T22' 
 1.21 
 1.21 
 
 1.31 
 1.29 
 1.25 
 
 
 
 1.28 
 
 11 
 
 
 
 1.14 
 1.19 
 1.15 
 1.10 
 1.09 
 
 1.15 
 
 
 
 1.27 
 
 12 
 
 
 
 
 1.10 
 1.10 
 
 
 1.39 
 1.36 
 1.28 
 1.24 
 
 1.30 
 
 1.20 
 
 13 
 
 1.30 
 
 1.20 
 
 1.25 
 
 1.15 
 
 
 1.14 
 
 15 
 
 
 1.13 
 
 1.18 
 
 1.11 
 
 1.09 
 
 1.16 
 
 16 
 
 1.13 
 
 17 
 
 1.40 
 
 1.19 
 
 
 1. 12 
 
 18 
 
 
 
 1.21 
 
 1.12 
 1.12 
 1.11 
 
 1.12 
 1.15 
 1.10 
 1.08 
 
 1.05 
 1.00 
 
 1.21 
 1.24 
 1.35 
 
 "i.36" 
 
 1.20 
 
 1.26 
 
 1.40 
 
 "i.35" 
 
 1.29 
 1.28 
 1.29 
 
 1.14 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 1.40 
 
 
 
 1.18 
 
 20 
 
 
 
 
 1.36 
 
 21 
 
 
 1.18 
 
 1.10 
 
 "i."09* 
 1.19 
 1.06 
 1.04 
 
 1.05 
 1.05 
 
 1.24 
 
 22 
 
 
 23 
 
 1.31 
 
 
 1.10 
 1.20 
 
 1.20 
 1.12 
 1.12 
 1.15 
 
 
 24 
 
 
 25 
 
 
 1.27 
 
 1.18 
 1.16 
 1.14 
 1.12 
 1.26 
 1.83 
 
 1.28 
 
 1.29 
 1.24 
 1.25 
 
 1.25 
 'Y26" 
 
 1.10 
 
 1.02 
 1.18 
 1.09 
 
 1.26 
 
 1.24 
 1.20 
 
 1.42 
 
 26 
 
 
 
 
 27 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 1.42 
 
 28 
 
 1.40 
 
 29 
 
 
 
 
 
 1.34 
 
 30 
 
 
 
 
 
 1.26 
 
 i'52' 
 
 1.26 
 
 
 31 
 
 
 1.10 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 40 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.7 
 6 
 .6 
 
 .7 
 .7 
 
 .5 
 .4 
 .4 
 .4 
 .4 
 
 .3 
 .3 
 .3 
 
 .2 
 .2 
 
 (<0 
 
 (a) 
 (0) 
 0.0 
 .1 
 
 .2 
 .3 
 .4 
 .5 
 .3 
 
 .3 
 .3 
 .3 
 .3 
 .3 
 
 0.1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 .3 
 
 .8 
 1.8 
 
 16 
 
 
 0.2 
 
 fa) 
 
 00 
 
 (a) 
 
 0.1 
 .1 
 .2 
 .2 
 .3 
 
 .3 
 
 .4 
 .5 
 .6 
 
 .7 
 
 .4 
 
 .2 
 .1 
 .1 
 .1 
 
 0.2 
 
 2 
 
 
 17 
 
 
 1.0 
 
 3 
 
 
 18 
 
 
 1.1 
 
 4 
 
 
 19 
 
 
 1.0 
 
 5 
 
 
 20 
 
 
 1.3 
 
 6. 
 
 
 21 
 
 
 .6 
 
 7 
 
 
 22 
 
 
 .2 
 
 8 
 
 
 23 
 
 
 .1 
 
 9 
 
 
 24 
 
 
 .1 
 
 10 
 
 
 25 
 
 
 1.2 
 
 11 
 
 
 26 
 
 
 .5 
 
 12 
 
 
 27 
 
 0.7 
 1.0 
 
 .7 
 
 .7 
 
 .5 
 
 13 
 
 
 28 
 
 .4 
 
 14 
 
 
 29 
 
 .7 
 
 15 
 
 
 30 
 
 .6 
 
 
 
 31 
 
 .5 
 
 
 
 
 
 a Channel dry. 
 
ISLAND OP HAWAII. 
 
 283 
 
 Daily discharge, 4n second-feet, at station No. 40 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.20 
 .20 
 .20 
 .10 
 .00 
 
 .10 
 .20 
 .40 
 .30 
 .20 
 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 
 .10 
 (a) 
 (a) 
 
 («) 
 («) 
 
 (a) 
 («) 
 
 l a ) 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a\ 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 fa) 
 
 (a) 
 
 (a) 
 
 fa) 
 )a) 
 (a) 
 
 ii 
 
 0.5 
 1.5 
 3.5 
 • 3.0 
 2.0 
 
 1.0 
 .5 
 .2 
 .1 
 
 0.10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .30 
 .90 
 1.20 
 .30 
 
 .10 
 .90 
 .80 
 .70 
 .60 
 
 .50 
 .10 
 .30 
 .20 
 .20 
 
 .10 
 .10 
 .05 
 .05 
 .20 
 3.20' 
 
 1.00 
 .50 
 .10 
 .10 
 .10 
 
 .20 
 
 2.50 
 
 2.00 
 
 1.50 
 
 50 
 
 .50 
 .10 
 .10 
 .10 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .30 
 .30 
 .20 
 .20 
 .30 
 
 .30 
 .20 
 .20 
 .10 
 .10 
 
 1.00 
 1.50 
 2.00 
 2.90 
 3.30 
 
 1.80 
 .80 
 .50 
 .40 
 .30 
 
 .30 
 .30 
 .30 
 .30 
 .30 
 
 .30 
 .70 
 .70 
 .70 
 .40 
 
 .40 
 .40 
 .30 
 .30 
 .20 
 
 .20 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 "o.'io* 
 "*"."i6" 
 
 .10 
 
 "\*i6" 
 
 0.20 
 .30 
 .50 
 .30 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 1.50 
 
 1.00 
 
 .20 
 
 .80 
 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 "o.'io" 
 
 0.60 
 
 .60 
 
 2.00 
 
 3.50 
 
 .40 
 
 .30 
 .30 
 .20 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 
 (a) 
 
 (a) 
 .20 
 
 0.10 
 .10 
 .10 
 .10 
 
 (a) 
 
 (a) 
 (a) 
 )a) 
 {a) 
 (a) 
 
 (a) 
 
 (a) 
 .10 
 
 .10 
 .10 
 .10 
 .20 
 .50 
 
 .50 
 
 1.50 
 
 3.00 
 
 .30 
 
 .10 
 
 .20 
 3.50 
 2.00 
 2.00 
 2.00 
 1.30 
 
 0.30 
 .30 
 .40 
 .40 
 .40 
 
 .20 
 .10 
 .10 
 .7U 
 .70 
 
 .70 
 .70 
 .50 
 .30 
 .20 
 
 .30 
 1.20 
 .70 
 .60 
 .50 
 
 .30 
 .30 
 .30 
 .20 
 .20 
 
 .20 
 .10 
 .50 
 .30 
 .20 
 
 1.00 
 
 2 
 
 2.00 
 
 3 
 
 .40 
 
 4 
 
 .70 
 
 5 
 
 .30 
 
 6 
 
 .30 
 
 7 
 
 .30 
 
 8 
 
 .30 
 
 9 
 
 .30 
 
 10 
 
 .30 
 
 11 
 
 .20 
 
 12 
 
 .10 
 
 13 
 
 .05 
 
 14 
 
 .05 
 
 15 
 
 .10 
 
 16. 
 
 .05 
 
 17 
 
 .05 
 
 18 
 
 .05 
 
 19 
 
 .10 
 
 20 
 
 .50 
 
 21 
 
 .20 
 
 22 
 
 2.00 
 
 23 
 
 3.50 
 
 24 
 
 2.50 
 
 25 
 
 .80 
 
 26 
 
 1.00 
 
 27 
 
 .80 
 
 28 
 
 .70 
 
 29 
 
 .40 
 
 30 
 
 .20 
 
 31 
 
 .20 
 
 
 
 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 40 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.26 
 .25 
 .45 
 
 Run-ofl 
 (total in 
 acre-feet). 
 
 16.10 
 15.10 
 28.00 
 
 4.92 
 24.20 
 22.80 
 24.40 
 41.80 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.10 
 .22 
 .10 
 .31 
 .58 
 .40 
 .63 
 
 ,33 
 
 Run-off 
 (total in 
 acre-feet). 
 
 5.95 
 13.50 
 
 6.15 
 18.40 
 35.70 
 23.80 
 38.70 
 
 260.00 
 
 Discharge measurements at station No. 41 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.42 
 .20 
 .90 
 
 Sec.-ft. 
 0.62 
 .14 
 1.25 
 
 Nov. 22 
 
 Feet. 
 1.34 
 .25 
 
 Sec.-ft. 
 2.33 
 
 Sept. 26 
 
 Dec. 12 
 
 .52 
 
 Oct.25 
 
 
 
 
 
 Note.— Bed of stream of gravel, small cobbles, and some bowlders. The section is rough, but probably 
 permanent. One channel at all stages. 
 
284 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 41 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Billkov, Goorko, Belayefi, Selitonott, and KuznetsofE, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug, 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.22 
 
 "i."52* 
 
 0.70 
 .59 
 
 1.46 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.54 
 .52 
 .52 
 
 .65 
 .72 
 .85 
 .78 
 .72 
 
 .65 
 .60 
 .55 
 .50 
 .35 
 
 .25 
 
 (a) 
 
 1.32 
 1.22 
 1.13 
 
 1.32 
 1.36 
 1.52 
 
 1.54 
 
 
 
 1.59 
 1.44 
 1.40 
 
 1.35 
 
 '"i."28" 
 
 1.20 
 
 .92 
 
 .72 
 .72 
 .49 
 
 ""."48" 
 .40 
 .46 
 .50 
 
 
 1.46 
 
 4 
 
 1.80 
 1.60 
 
 "6." 59" 
 
 """58 
 
 "i."3o" 
 
 1.25 
 1.24 
 
 .84' 
 
 .78 
 
 .69 
 .80 
 .59 
 .49 
 .46 
 
 .64 
 
 .42 
 .32 
 
 .30 
 
 ""29" 
 
 ""34" 
 
 .34 
 .79 
 .66 
 .63 
 
 "i."46" 
 
 "*"."89* 
 
 .92 
 
 1.71 
 
 "T56" 
 1.56 
 1.12 
 
 .82 
 
 1.69 
 
 1.50 
 
 5 
 
 1.31 
 
 6 
 
 1.23 
 
 7 
 
 "(a)" 
 (a) 
 (a) 
 
 (a) 
 (a) 
 0.51 
 .45 
 .10 
 
 .10 
 .15 
 .20 
 .79 
 1.33 
 
 1.05 
 
 1.39 
 
 8 
 
 
 
 1.26 
 
 9 
 
 1.18 
 1.11 
 
 1.33 
 1.74 
 1.84 
 1.84 
 1.52 
 
 1.39 
 1.55 
 
 "i."69" 
 
 1.54 
 1.34 
 1.39 
 
 
 
 
 1.14 
 
 10 
 
 1.94 
 
 1.79 
 1.61 
 
 "i.'si" 
 
 1.54 
 1.44 
 
 "i'.hi' 
 
 1.51 
 1.49 
 
 1.70 
 1.61 
 1.48 
 
 
 
 .74 
 
 11 
 
 
 
 .39 
 
 12 
 
 
 
 
 .40 
 .56 
 
 .24 
 
 13 
 
 1.02 
 
 .69 
 
 1.31 
 
 .20 
 
 
 .24 
 
 15 
 
 
 .61 
 
 1.22 
 
 .80 
 
 .44 
 
 .45 
 
 16 
 
 1.00 
 
 17 
 
 .78 
 
 .80 
 
 
 .36 
 
 18.. 
 
 
 
 .89 
 
 .49 
 .40 
 .34 
 
 .34 
 .46 
 .34 
 .29 
 
 .19 
 .12 
 .08 
 .05 
 .76 
 
 .74 
 
 .82 
 
 1.46 
 
 "i.'49" 
 .90 
 
 .87 
 
 1.55 
 
 "L'46" 
 
 1.31 
 1.32 
 1.39 
 
 .27 
 
 19 
 
 .15 
 .08 
 
 -.05 
 -.10 
 
 -.25 
 -.35 
 
 ,78 
 
 
 
 .90 
 
 20 
 
 
 
 
 1.56 
 
 21 
 
 
 .77 
 
 .70 
 
 """26" 
 .20 
 .29 
 .20 
 
 .12 
 .51 
 
 .75 
 
 22 
 
 
 23 
 
 .71 
 
 
 .60 
 .90 
 
 .59 
 .55 
 .42 
 .42 
 
 
 24 
 
 
 25 
 
 
 1.36 
 
 1.32 
 1.22 
 1.14 
 1.06 
 1.15 
 2.00 
 
 1.52 
 
 1.60 
 1.55 
 1.49 
 
 .69 
 "".'68* 
 
 1.12 
 
 1.01 
 1.29 
 1.19 
 
 1.00 
 
 .95 
 
 .88 
 
 1.10 
 
 26 
 
 
 
 
 27 
 
 8 
 
 (a) 
 (a) 
 
 
 1.05 
 
 28 
 
 .46 
 
 29.... 
 
 
 
 .60 
 
 30 
 
 
 
 
 "i."58" 
 
 .99 
 
 
 31.. 
 
 
 .60 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 41 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1.... 
 
 
 3.6 
 3.6 
 
 4.2 
 4.7 
 5.3 
 
 4.4 
 3.6 
 4.0 
 4.4 
 5.0 
 
 3.0 
 3.0 
 3.1 
 3.2 
 3.3 
 
 0.3 
 .3 
 .3 
 .8 
 
 1.0 
 
 1.3 
 1.9 
 2.6 
 3.6 
 2.1 
 
 2.5 
 3.0 
 3.5 
 4.4 
 5.3 
 
 - 0.8 
 .8 
 .5 
 .5 
 .5 
 
 .7 
 .6 
 .6 
 .8 
 .8 
 
 .8 
 
 .8 
 
 1.7 
 
 2.8 
 
 16.0 
 
 16 
 
 
 3.4 
 3.6 
 2.2 
 1.2 
 1.0 
 
 .8 
 
 .7 
 .7 
 .7 
 .7 
 
 .8 
 .5 
 .4 
 .4 
 .4 
 .3 
 
 2.5 
 2.8 
 3.1 
 3.4 
 3.9 
 
 4.4 
 5.0 
 5.6 
 6.2 
 6.8 
 
 2.5 
 1.5 
 1.4 
 1.0 
 
 .8 
 
 21.8 
 
 2 
 
 
 17 
 
 
 24.2 
 
 3 
 
 
 18 
 
 
 26.4 
 
 4 
 
 
 19 
 
 2.2 
 1.2 
 
 .9 
 1.9 
 
 8.2 
 8.2 
 9.8 
 
 11.6 
 5.9 
 7.4 
 3.6 
 3.6 
 
 25.0 
 
 5 
 
 
 20 
 
 19.0 
 
 6 
 
 
 21... 
 
 5.0 
 
 7 
 
 
 22 
 
 2.8 
 
 8 
 
 
 23 
 
 2.3 
 
 9 
 
 
 24 
 
 1.4 
 
 10 
 
 
 25 
 
 18.0 
 
 11 
 
 
 26 
 
 11.0 
 
 12 
 
 
 27... 
 
 10.0 
 
 13 
 
 
 28 
 
 9.1 
 
 14 
 
 
 29 
 
 12.0 
 
 15 
 
 
 30 
 
 12.4 
 
 
 
 31 
 
 10.0 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 285 
 
 Daily discharge, in second-feet, at station No. 41 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.50 
 .50 
 .55 
 .50 
 .50 
 
 .65 
 .70 
 .85 
 .80 
 .70 
 
 .65 
 .60 
 . .55 
 .50 
 .40 
 
 .35 
 .35 
 .30 
 .30 
 .30 
 
 .20 
 .15 
 .05 
 .05 
 .05 
 
 .05 
 (a) 
 
 (a) 
 
 '"(a)" 
 
 0.50 
 .45 
 .30 
 
 ' .30 
 .30 
 .30 
 .80 
 
 2.40 
 
 5.00 
 10.00 
 12.00 
 6.00 
 2.00 
 
 'l.OO 
 1.00 
 1.00 
 1.00 
 
 2.00 
 2.50 
 2.30 
 1.70 
 1.30 
 
 1.20 
 
 r.io 
 
 1.30 
 1.50 
 1.25 
 
 2.40 
 7.20 
 8.90 
 8.90 
 3.90 
 
 2.75 
 4.30 
 4.90 
 5.60 
 . 6.35 
 
 4.20 
 2.45 
 2.75 
 2.65 
 2.55 
 
 2.30 
 1.70 
 1.40 
 1.10 
 1.40 
 12.00 
 
 5.00 
 3.00 
 2.30 
 2.55 
 3.90 
 
 4.20 
 12.00 
 12.00 
 11.00 
 11.00 
 
 8.05 
 5.15 
 4.50 
 3.75 
 4.20 
 
 3.10 
 4.00 
 3.75 
 3.75 
 3.50 
 
 6.50 
 5.15 
 3.45 
 3.70 
 3.90 
 
 5.00 
 4.30 
 3.50 
 3.00 
 4.00 
 
 4.00 
 5.00 
 6.00 
 8.20 
 10.00 
 
 5.00 
 4.50 
 4.00 
 3.50 
 3.00 
 
 2.50 
 2.00 
 1.05 
 1.00 
 .90 
 
 .85 
 .80 
 .80 
 .80 
 .75 
 
 .70 
 
 .70 
 
 6.65 
 
 2.00 
 
 .70 
 
 .70 
 .70 
 .80 
 .70 
 .60 
 .60 
 
 '"6~6o" 
 """«)" 
 
 '"■'.70 
 
 ""."60" 
 
 "".'80' 
 .80 
 
 *'i.'3o' 
 
 1.00 
 2.15 
 1.55 
 
 1.00 
 3.00 
 4.85 
 3.10 
 2.80 
 
 2.50 
 2.30 
 2.10 
 1.60 
 .90 
 
 7.00 
 4.00 
 2.25 
 2.00 
 1.70 
 
 1.60 
 1.40 
 1.30 
 1.10 
 .90 
 
 .70 
 .70 
 .60 
 .90 
 .70 
 
 .60 
 .55 
 .40 
 .40 
 .30 
 .20 
 
 0.30 
 
 .50 
 .70 
 .70 
 .50 
 
 .50 
 .50 
 .10 
 .45 
 .50 
 
 .50 
 .40 
 .55 
 .60 
 .80 
 
 .40 
 .50 
 .90 
 2.00 
 .50 
 
 .40 
 - .30 
 .30 
 .30 
 .30 
 
 .30 
 .50 
 .40 
 .30 
 .30 
 .40 
 
 2.00 
 3.90 
 7.00 
 12.00 
 2.20 
 
 1.90 
 1.85 
 
 .85 
 .80 
 .80 
 
 .70 
 
 .80 
 .60 
 .50 
 .45 
 
 .65 
 .50 
 .50 
 .40 
 .40 
 
 .40 
 .45 
 .40 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .25 
 
 .80 
 
 0.70 
 .60 
 .50 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .80 
 .70 
 .60 
 .50 
 
 .70 
 
 1.50 
 
 .75 
 
 .80 
 
 3.30 
 
 3.50 
 
 5.00 
 
 10.00 
 
 3.50 
 
 .90 
 
 .90 
 
 12.00 
 
 10.00 
 
 8.00 
 
 6.00 
 
 4.70 
 
 3.30 
 4.00 
 5.50 
 4.00 
 3.30 
 
 1.20 
 
 .90 
 
 .90 
 
 6.65 
 
 10.00 
 
 7.00 
 3.60 
 4.45 
 1.30 
 .80 
 
 6.35 
 
 10.00 
 4.30 
 6.00 
 2. '80 
 
 2.25 
 2.30 
 2.75 
 2.00 
 1.00 
 
 .90 
 
 .90 
 
 1.50 
 
 1.20 
 
 1.00 
 
 8.00 
 
 2 
 
 10.00 
 
 3 
 
 3.30 
 
 4 
 
 3.60 
 
 5 
 
 2.25 
 
 6 . 
 
 1.80 
 
 7 
 
 2.75 
 
 8 
 
 1.95 
 
 9 
 
 1.35 
 
 10 
 
 .70 
 
 11 
 
 .40 
 
 12 
 
 .30 
 
 13 
 
 14 
 
 .30 
 .30 
 
 
 .45 
 
 16 
 
 1.00 
 
 17 
 
 .40 
 
 18 
 
 .30 
 
 19 
 
 .90 
 
 20 
 
 4.45 
 
 21 
 
 .70 
 
 22 
 
 5.00 
 
 23 
 
 10.00 
 
 24 
 
 6.00 
 
 25 
 
 1.20 
 
 26 
 
 2.00 
 
 27 
 
 1.10 
 
 28 
 
 .45 
 
 29 
 
 
 .60 
 
 30 
 
 
 .50 
 
 31 
 
 (a) 
 
 
 .50 
 
 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 41 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 September (19-29) 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 5.38 
 2.46 
 2.79 
 7.71 
 
 .36 
 1.53 
 3.41 
 5.11 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 151. 00 
 167.00 
 475. 00 
 
 22.10 
 
 88.00 
 
 210.00 
 
 304. 00 
 
 Month. 
 
 1912— Continued 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 2.56 
 1.00 
 1.72 
 .52 
 1.42 
 2.55 
 3.40 
 2.34 
 
 2.16 
 
 Run-off 
 (total in 
 acre-feet). 
 
 157. 00 
 59.50 
 106. 00 
 32.00 
 84.50 
 157. 00 
 202. 00 
 144.00 
 
 1, 570. 00 
 
 Discharge measurements at station No. 42 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage, 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.69 
 .75 
 
 .75 
 
 Sec.-ft. 
 
 
 Nov. 22 
 
 Feet. 
 0.76 
 .70 
 
 Sec.-ft. 
 0.04 
 
 Sept. 26.. 
 
 
 Dec. 12 
 
 
 
 Oct. 25.. 
 
 0.04 
 
 
 
 
 
 Note.— Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 
 
286 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 42 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.40 
 
 ""6*85" 
 
 0.76 
 
 .76 
 
 0.79 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.65 
 
 (o) 
 
 (a) 
 
 0.66. 
 .68 
 .71 
 .70 
 .65 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 0.69 
 .62 
 .60 
 
 0.72 
 
 .78 
 .78 
 
 .81 
 
 
 
 0.80 
 .80 
 .75 
 
 .75 
 
 "".'72" 
 .70 
 .76 
 
 .94 
 .80 
 .70 
 
 .69 
 
 .72 
 .74 
 
 
 0.79 
 
 4 
 
 1.06 
 .80 
 
 "6." 46" 
 
 """."38" 
 
 """."80" 
 
 .80 
 .88 
 
 *84 
 
 .72 
 .72 
 .70 
 .70 
 .69 
 
 .71 
 
 .70 
 .69 
 
 .66 
 
 ""."66" 
 
 '".*69" 
 
 .68 
 .78 
 .70 
 
 .74 
 
 ""."77" 
 
 "'."to" 
 
 .71 
 
 .84 
 
 """."82" 
 .81 
 .74 
 .70 
 
 .85 
 
 .80 
 
 5 
 
 .72 
 
 6 
 
 .72 
 
 7. . 
 
 "■(•)"■ 
 
 (a) 
 (a) 
 
 (») 
 
 (a) 
 
 0.60 
 .55 
 
 .55 
 (a) 
 (a) 
 0.62 
 
 .70 
 
 .60 
 
 .72 
 
 g 
 
 
 
 .74 
 
 9 
 
 .66 
 .66 
 
 .69 
 .81 
 .91 
 
 . ,77 
 
 .71 
 .94 
 
 ""."9i" 
 
 .89 
 
 .78 
 .78 
 
 
 
 
 .74 
 
 10 
 
 .84 
 
 .78 
 .79 
 
 .80 
 
 .72 
 
 "".'76' 
 .80 
 
 .81 
 
 .86 
 .79 
 .76 
 
 
 
 .72 
 
 11 
 
 
 
 .71 
 
 12 
 
 
 
 
 .70 
 
 .72 
 
 .70 
 
 13 
 
 .76 
 
 .51 
 
 .74 
 
 .69 
 
 
 .70 
 
 15 
 
 
 .46 
 
 .71 
 
 .73 
 .70 
 
 .72 
 
 16 
 
 .73 
 
 17 
 
 .68 
 
 .50 
 
 
 .71 
 
 18 
 
 
 
 .74 
 
 .70 
 
 .68 
 .68 
 
 .69 
 .70 
 .68 
 .65 
 
 .63 
 .60 
 .60 
 .60 
 .76 
 
 .73 
 .76 
 .81 
 
 """."87" 
 
 .74 
 
 .80 
 
 .82 
 
 ""."to" 
 
 .77 
 .75 
 
 .75 
 
 .72 
 
 19 
 
 (•) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .64 
 
 
 
 .72 
 
 20 
 
 
 
 
 .77 
 
 21 
 
 
 .42 
 
 .70 
 
 ""."67" 
 
 .70 
 .70 
 .70 
 
 .68 
 .72 
 
 .71 
 
 22 
 
 
 23 
 
 .60 
 
 
 .69 
 
 .74 
 
 .70 
 .70 
 .66 
 .70 
 
 
 24 
 
 
 25 
 
 
 .70 
 
 .71 
 .68 
 .62 
 .61 
 .85 
 1.39 
 
 .83 
 
 .55 
 .80 
 .79 
 
 .58 
 ""."55" 
 
 .74 
 
 .70 
 
 .77 
 .71 
 
 .72 
 
 .73 
 
 .72 
 
 .76 
 
 26 
 
 
 
 
 27... 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 .72 
 
 28 
 
 .70 
 
 29 
 
 
 
 .72 
 
 30 
 
 
 
 
 """.85* 
 
 .72 
 
 
 
 
 .50 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 42 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 (a) 
 (a) 
 (a) 
 (a) 
 0.05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (0) 
 (0) 
 
 0.01 
 
 .01 
 
 01 
 .01 
 .05 
 .18 
 .70 
 
 16 
 
 
 0.05 
 .10 
 .05 
 .03 
 .01 
 
 .01 
 
 n 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 \i 
 
 (a) 
 (a) 
 
 0.05 
 .05 
 .05 
 
 .10 
 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .12 
 
 .05 
 .05 
 .05 
 .03 
 .01 
 
 0.20 
 
 2 
 
 
 17 
 
 
 .60 
 
 3 
 
 
 18... 
 
 
 .75 
 
 4 
 
 
 19 |... 
 
 .65 
 
 5 
 
 
 20.... 
 
 .20 
 
 6 
 
 
 21 
 
 
 .10 
 
 7 
 
 
 22 
 
 
 .05 
 
 8 
 
 
 23 
 
 
 .05 
 
 9 
 
 
 24 
 
 
 .05 
 
 10 
 
 
 25 
 
 
 .40 
 
 11 
 
 
 26 
 
 
 .15 
 
 12 
 
 
 27 
 
 0.10 
 .15 
 .10 
 .10 
 
 .15 
 
 13 
 
 
 28 
 
 .12 
 
 14 
 
 
 29 
 
 .30 
 
 15 
 
 
 30 
 
 ■s 
 
 
 
 31 
 
 
 
 
 
 a Channel dry. 
 
ISLAND OF HAW AIL 
 
 287 
 
 Daily discharge, in second-feet, at station No. 42 at 2,700-foot level, near Rilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 0.05 
 .05 
 .05 
 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .10 
 .20 
 .25 
 .10 
 
 .05 
 .30 
 .30 
 .20 
 .20 
 
 .20 
 .10 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 .15 
 1.35 
 
 0.30 
 .10 
 .05 
 .10 
 .10 
 
 .10 
 .50 
 .40 
 .30 
 .15 
 
 .10 
 .10 
 .10 
 .05 
 .10 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 
 .15 
 .10 
 .10 
 .10 
 .15 
 
 .10 
 .10 
 .10 
 .10 
 
 
 
 0.05 
 .05 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 
 .10 
 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 .30 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .10 
 .05 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .15 
 .50 
 .70 
 .10 
 
 .10 
 .20 
 .20 
 .15 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .10 
 
 0.10 
 .10 
 .10 
 .05 
 .10 
 
 .10 
 . .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .05 
 .05 
 .05 
 
 .10 
 .10 
 .05 
 .10 
 .10 
 
 .15 
 .30 
 .60 
 
 .15 
 .05 
 
 .10 
 1.40 
 1.00 
 .50 
 .20 
 .15 
 
 0.10 
 .20 
 .50 
 .20 
 .10 
 
 .10 
 .05 
 .05 
 .15 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.30 
 
 2 
 
 
 
 
 
 .70 
 
 3 
 
 0.05 
 
 
 
 
 .10 
 
 4 
 
 0.55 
 
 
 .10 
 
 
 
 
 .05 
 
 6 
 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 
 
 .10 
 
 
 .05 
 
 
 .05 
 
 g 
 
 
 
 .05 
 
 9 
 
 
 
 .05 
 
 10 
 
 
 
 .05 
 
 11 
 
 
 
 .05 
 
 12 
 
 
 
 
 
 .05 
 
 fSi 
 
 
 
 .10 
 
 
 .05 
 
 14 
 
 
 
 .05 
 
 
 
 
 
 
 .05 
 
 
 
 
 
 
 .05 
 
 17 
 
 
 
 .05 
 
 
 .05 
 
 
 
 
 .05 
 
 19 . 
 
 
 
 
 
 .05 
 
 
 
 
 
 
 .10 
 
 
 
 
 
 .05 
 
 22 
 
 
 
 
 
 .50 
 
 23 
 
 
 
 
 
 1.00 
 
 24 
 
 
 
 
 
 .50 
 
 25 
 
 
 
 
 0.05 
 
 .05 
 .10 
 .05 
 
 .10 
 
 26 
 
 
 
 .10 
 
 27 
 
 
 
 .05 
 
 2^ 
 
 
 
 .05 
 
 29 
 
 
 
 .05 
 
 30 
 
 
 
 .10 
 
 
 
 .05 
 
 31 
 
 
 
 
 
 .05 
 
 
 
 
 1 
 
 
 
 
 Note.— Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 
 
 near station No. 50. 
 
 Monthly discharge at station No. 42 at 2,700-foot level, near Hilo, Hawaii, for 1911-li. 
 
 Month. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-ofi 
 (total in 
 acre-feet). 
 
 Month. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1911. 
 
 0.05 
 .05 
 .16 
 
 3.18 
 3.20 
 10.00 
 
 1912— Continued. 
 June 
 
 0.03 
 .06 
 .07 
 .11 
 
 ' .20 
 .10 
 .15 
 
 1.79 
 
 November 
 
 Julv 
 
 3.69 
 
 December 
 
 August 
 
 4.30 
 
 
 
 6.55 
 12.30 
 
 1912. 
 
 .02 
 .05 
 .15 
 .14 
 
 1.23 
 2.88 
 9.22 
 8.33 
 4.30 
 
 
 Januarv 
 
 November 
 
 5.95 
 
 
 December 
 
 9.22 
 
 
 The vear 
 
 
 April 
 
 .10 
 
 69.80 
 
 May 
 
 .07 
 
 
 
 Discharge measurements at station No. 43 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage. 
 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.10 
 .05 
 .30 
 
 Sec.-ft. 
 0.05 
 
 .10 
 
 Nov. 22 
 
 Feet. 
 0.25 
 .09 
 
 Sec.-ft. 
 0.21 
 
 Sept. 26 
 
 Oct. 25 
 
 Dec. 12 
 
 .06 
 
 
 
 
 
 Note, — Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 
 
288 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 43 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.04 
 
 ' '6." 46" 
 
 0.28 
 
 .24 
 
 0.30 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.25 
 
 .21 
 .21 
 
 .32 
 .32 
 .35 
 .32 
 .30 
 
 .28 
 .25 
 .24 
 .22 
 .21 
 
 .20 
 
 ' "6." 64' 
 
 .02 
 
 0.14 
 .10 
 .09 
 
 0.16 
 .20 
 .22 
 
 .29 
 
 
 
 0.38 
 .24 
 .20 
 
 .11 
 
 '".'io' 
 
 .01 
 .10 
 
 .45 
 .35 
 .15 
 
 ....... 
 
 .10 
 .15 
 .16 
 
 
 0.36 
 
 4 
 
 0.50 
 
 .25 
 
 "".'66' 
 
 ' + .'16" 
 
 "".'35" 
 
 .30 
 .45 
 .37 
 .24 
 
 .12 
 .28 
 .20 
 .20 
 .10 
 
 .23 
 
 .13 
 .10 
 
 .08 
 
 "".'66' 
 
 "".'io' 
 
 .10 
 
 .26 
 .14 
 .22 
 
 '".'36' 
 
 "*.*23" 
 
 .26 
 
 -.50 
 
 ....„ . 
 
 .41 
 .36 
 .29 
 
 .58 
 
 .30 
 
 5 
 
 .20 
 
 6 
 
 .14 
 
 7 
 
 '".'62' 
 .02 
 .01 
 
 .01 
 .02 
 .21 
 .17 
 .10 
 
 .08 
 .05 
 .02 
 .25 
 .33 
 
 .10 
 
 .18 
 
 8 
 
 
 
 .26 
 
 9 
 
 .14 
 .14 
 
 .15 
 .30 
 .35 
 .34 
 .21 
 
 .13 
 
 .37 
 
 "".'25* 
 
 .25 
 .16 
 .16 
 
 
 
 
 .22 
 
 10 
 
 .34 
 
 .28 
 .21 
 
 '"."is" 
 
 .21 
 
 .18 
 
 ""."2T 
 .22 
 .24 
 
 .33 
 .28 
 .21 
 
 
 
 .17 
 
 11 
 
 
 
 .12 
 
 12 
 
 
 
 
 .11 
 
 .18 
 
 .10 
 
 13 
 
 .21 
 
 .21 
 
 .19 
 
 .05 
 
 14 
 
 .12 
 
 15 
 
 
 .05 
 
 .01 
 
 .19 
 .10 
 
 .14 
 
 16 
 
 .25 
 
 17 
 
 .13 
 
 .10 
 
 
 .11 
 
 18 
 
 
 
 .23 
 
 .18 
 .14 
 1 11 
 
 .13 
 .15 
 .11 
 .03 
 
 .05 
 .04 
 .02 
 .05 
 .28 
 
 .19 
 .38 
 .60 
 
 "".'39' 
 .27 
 
 .38 
 
 .44 
 
 '".'37' 
 
 .38 
 .31 
 .39 
 
 .12 
 
 19 
 
 .10 
 .09 
 
 .08 
 .06 
 .06 
 .06 
 
 .18 
 
 
 
 • IS 
 
 20 
 
 
 
 
 .42 
 
 21 
 
 
 .05 
 
 .10 
 
 "".'62" 
 .05 
 .08 
 .02 
 
 .02 
 .13 
 
 .24 
 
 22 
 
 
 23 
 
 .10 
 
 
 .10 
 .19 
 
 .15 
 .12 
 .10 
 .12 
 
 
 24 
 
 
 25 
 
 
 .16 
 
 .15 
 .11 
 .09 
 .06 
 .14 
 .41 
 
 .31 
 
 .26 
 .29 
 .28 
 
 .00 
 + .05 
 
 .19 
 
 .12 
 .20 
 .11 
 
 .20 
 
 .20 
 .19 
 
 .27 
 
 26 
 
 
 
 
 27 
 
 .11 
 .10 
 .08 
 .06 
 
 
 .30 
 
 28 
 
 .20 
 
 29 . 
 
 
 
 .22 
 
 30 
 
 
 
 
 "".'46' 
 
 .28 
 
 
 31 
 
 
 + .15 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Monthly discharge at station No. 43 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 October... 
 November. 
 December . 
 
 1911. 
 
 1912. 
 
 January . . 
 February. 
 
 March 
 
 April 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 a 0.20 
 a. 20 
 a. 40 
 
 Run-off 
 (total in 
 acre-feet). 
 
 12.30 
 11.90 
 24.60 
 
 3.20 
 2.00 
 4.40 
 7.30 
 3.60 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year . 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 0.01 
 .05 
 .04 
 .13 
 .23 
 .23 
 .26 
 
 11 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.60 
 3.20 
 2.60 
 7.70 
 13.90 
 13.50 
 16.10 
 
 78.10 
 
 a Estimated. 
 
 Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
 Discharge measurements at station No. 44 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.51 
 .52 
 .55 
 
 Sec.-ft. 
 
 
 Nov. 22. . 
 
 • 
 
 Feet. 
 0.55 
 .11 
 
 Sec.-ft. 
 0.05 
 
 Sept. 26 . 
 
 Dec. 12 
 
 
 
 Oct. 28 
 
 0.05 
 
 
 
 
 
 Note.— Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 
 
ISLAND OF HAWAII. 
 
 289 
 
 Daily gage height, in feet, at station No. 44 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.52 
 
 *"6."56* 
 
 0.55 
 .54 
 
 0.55 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.45 
 .42 
 
 .42 
 
 .46 
 .48 
 .51 
 .50 
 
 .48 
 
 .45 
 .48 
 .45 
 .44 
 
 "b'.'il 
 .41 
 
 0.50 
 .50 
 .50 
 
 0.52 
 .53 
 .56 
 
 .55 
 
 
 
 0.58 
 .55 
 .54 
 
 .52 
 
 '""."52" 
 .52 
 
 .54 
 
 .62 
 .58 
 .52 
 
 "*\*54' 
 .52 
 .52 
 .54 
 
 
 0.22 
 
 4 
 
 0.75 
 .61 
 
 ""6"39" 
 '"."31* 
 
 ""."55" 
 
 .54 
 .58 
 .53 
 .52 
 
 .52 
 .54 
 .52 
 .52 
 .51 
 
 .53 
 
 .54 
 .52 
 
 .52 
 
 ""."52* 
 
 "\*54" 
 
 .52 
 .55 
 .55 
 .55 
 
 ""."55' 
 
 ""."55* 
 .55 
 
 .58 
 
 ""."55" 
 .55 
 .55 
 .55 
 
 .56 
 
 .34 
 
 5 
 
 .12 
 
 6. 
 
 .12 
 
 7 
 
 """46" 
 .40 
 
 .38 
 
 .38 
 .40 
 
 .48 
 .40 
 
 .39 
 .38 
 .41 
 .45 
 
 .50 
 
 .35 
 
 g 
 
 
 
 .42 
 
 9 
 
 .50 
 .50 
 
 .50 
 .57 
 .60 
 .60 
 
 .59 
 
 "".'58* 
 
 .54 
 .51 
 .56 
 
 
 
 
 .40 
 
 10 ... 
 
 .59 
 
 .54 
 .55 
 
 ""."55" 
 
 .54 
 
 .55 
 .55 
 
 .57 
 .56 
 .55 
 
 
 
 .31 
 
 11 
 
 
 
 .16 
 
 12 
 
 
 
 
 .52 
 .53 
 
 .08 
 
 13 
 
 .59 
 
 .48 
 
 .54 
 
 .08 
 
 14 
 
 .40 
 
 
 
 
 
 .53 
 
 .42 
 
 
 .45 
 
 17 
 
 .55 
 
 .46 
 
 
 .31 
 
 
 
 
 .53 
 
 .53 
 .55 
 .52 
 
 .52 
 .54 
 .52 
 .52 
 
 .53 
 .54 
 .54 
 .54 
 .55 
 
 .55 
 .55 
 .59 
 
 ""."57* 
 .55 
 
 .58 
 
 .58 
 
 """."55' 
 
 .56 
 .56 
 .56 
 
 .39 
 
 19 
 
 .44 
 .42 
 
 .42 
 .42 
 .42 
 .42 
 
 .56 
 
 
 
 .43 
 
 
 
 
 
 .43 
 
 21 
 
 
 .40 
 
 .52 
 
 "".'54* 
 .52 
 .54 
 .52 
 
 .54 
 .52 
 
 .42 
 
 22 
 
 
 23 
 
 .51 
 
 
 .52 
 .55 
 
 .55 
 .55 
 .52 
 
 .52 
 
 
 24 
 
 
 25 
 
 
 .54 
 
 .54 
 .52 
 .52 
 .51 
 .55 
 .62 
 
 .56 
 
 .58 
 .56 
 .52 
 
 .51 
 ""."56" 
 
 .55 
 
 .54 
 .55 
 .54 
 
 .55 
 
 .55 
 .55 
 
 .42 
 
 26 
 
 
 
 
 27 
 
 .45 
 .44 
 .42 
 .41 
 
 
 .42 
 
 
 .25 
 
 29 . 
 
 
 
 .23 
 
 
 
 
 
 ""."58" 
 
 .55 
 
 
 31... 
 
 
 .43 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Monthly discharge at station No. 44 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 October . . . 
 November. 
 December. 
 
 1911. 
 
 January . . 
 February. 
 
 March 
 
 April 
 
 May 
 
 1912. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 a 0.03 
 a. 03 
 a. 05 
 
 .01 
 .03 
 .05 
 .06 
 .07 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.84 
 1.78 
 3.08 
 
 .60 
 2.00 
 3.00 
 3.60 
 4.00 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year . 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.02 
 .02 
 .03 
 .04 
 .06 
 .05 
 .05 
 
 .04 
 
 1.00 
 1.40 
 1.60 
 2.60 
 5.00 
 3.00 
 3.00 
 
 30.80 
 
 a Estimated. 
 
 Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
 fall record at camp near station No. 50. 
 
 Daily gage height, in feet, at station No. 45 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 0.79 
 
 "78 
 
 Sec.-ft. 
 
 0.05 
 
 .00 
 
 .14 
 
 Nov. 22 . .. 
 
 Feet. 
 0.80 
 
 .74 
 
 Sec.-ft. 
 0.18 
 
 Sept. 26 
 
 Dec. 12 
 
 .06 
 
 Oct. 25 
 
 
 
 
 
 Note.— Bed of stream of sand, gravel and some small cobbles in bed rock. Station probably permanent. 
 One channel at all stages. 
 
 14694°— wsp 336—14- 
 
 -19 
 
290 
 
 WATER RESOURCES OP HAW An, 1912. 
 
 Discharge measurements at station No. 45 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.74 
 
 " "6." 90* 
 
 0.84 
 
 .82 
 
 0.87 
 
 
 2 
 
 
 
 
 
 
 
 
 
 3 
 
 0.75 
 .72 
 
 .71 
 
 .74 
 .75 
 
 .81 
 .82 
 .80 
 
 .75 
 .71 
 .70 
 .68 
 .62 
 
 .58 
 
 
 0.75 
 .73 
 
 .71 
 
 0.79 
 .81 
 
 .81 
 
 .84 
 
 
 
 0.86 
 .84 
 
 .82 
 
 .80 
 
 ""."so" 
 
 .79 
 
 .78 
 
 1.20 
 .85 
 .80 
 
 ""."80" 
 .79 
 .81 
 .80 
 
 
 0.84 
 
 4 
 
 1.08 
 .99 
 
 "6." 48* 
 ""."44* 
 
 *"."88* 
 
 .88 
 .92 
 .80 
 .79 
 
 .80 
 .84 
 .80 
 .79 
 .79 
 
 .84 
 
 .74 
 .72 
 
 .72 
 
 "Viz 
 ""."72" 
 
 .72 
 
 .79 
 .75 
 
 .82 
 
 "".'si' 
 
 "".'76" 
 .75 
 .94 
 
 ""."85" 
 
 .84 
 .80 
 .75 
 
 .94 
 
 .85 
 
 5 
 
 .80 
 
 6 
 
 .78 
 
 7 
 
 
 .65 
 
 .79 
 
 8 
 
 
 
 .86 
 
 9 
 
 ""6*78' 
 .73 
 .70 
 
 .68 
 .65 
 .61 
 .80 
 .89 
 
 .71 
 .71 
 
 .78 
 .86 
 .96 
 .99 
 .81 
 
 .78 
 .93 
 
 "".*9i" 
 
 .81 
 
 .77 
 .88 
 
 
 
 
 .81 
 
 10 . 
 
 .88 
 
 .88 
 .84 
 
 ""."81* 
 
 .82 
 
 .82 
 
 ""."82* 
 .82 
 .81 
 
 .89 
 .85 
 .81 
 
 
 
 .78 
 
 11 
 
 
 
 .76 
 
 12 
 
 
 
 
 .79 
 
 .82 
 
 .74 
 
 13 
 
 .81 
 
 .58 
 
 .81 
 
 .73 
 
 14 
 
 .74 
 
 15.. 
 
 
 .49 
 
 .79 
 
 .82 
 .79 
 
 .76 
 
 16... 
 
 .81 
 
 17. 
 
 .75 
 
 .60 
 
 
 .74 
 
 18. . . 
 
 
 
 .86 
 
 .79 
 
 .77 
 .76 
 
 .79 
 .79 
 .76 
 .74 
 
 .70 
 .68 
 .66 
 .66 
 
 .87 
 
 .79 
 .83 
 .92 
 
 *".*9i" 
 
 .79 
 
 .80 
 
 .85 
 
 '"."si" 
 
 .82 
 .82 
 .84 
 
 .75 
 
 19 
 
 
 .74 
 
 
 
 .80 
 
 20 
 
 
 
 
 
 .94 
 
 21 
 
 
 
 .58 
 
 .76 
 
 ""."75" 
 
 .75 
 .76 
 .75 
 
 .74 
 .81 
 
 .81 
 
 22 
 
 
 
 
 23 
 
 
 
 .70 
 
 
 .75 
 .81 
 
 .84 
 .81 
 .80 
 .80 
 
 
 24 
 
 
 
 
 25 
 
 
 
 .78 
 
 .76 
 .74 
 .71 
 .70 
 .86 
 
 114 
 
 .84 
 
 .82 
 .81 
 .79 
 
 .63 
 ""."61" 
 
 .80 
 
 .79 
 .80 
 .79 
 
 .81 
 
 .75 
 
 .78 
 
 .81 
 
 26 
 
 
 
 
 27 
 
 
 
 .81 
 
 28 
 
 
 
 .78 
 
 29 
 
 
 
 
 
 .80 
 
 30... 
 
 
 
 
 
 
 ""."92* 
 
 .79 
 
 
 31 
 
 
 
 
 .58 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 45 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct, 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .3 
 .3 
 .4 
 .4 
 
 .2 
 .3 
 .3 
 .3 
 .4 
 
 0.1 
 .1 
 .1 
 .1 
 .2 
 
 .2 
 .3 
 .3 
 .4 
 .2 
 
 .2 
 .3 
 .3 
 .4 
 .5 
 
 0.1 
 .1 
 .1 
 
 .1 
 .1 
 
 .1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 .3 
 .6 
 1.4 
 
 16 
 
 
 0.4 
 .4 
 .2 
 .1 
 .1 
 
 .1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 .1 
 .1 
 .1 
 .1 
 
 0.3 
 .3 
 .3 
 .3 
 .4 
 
 .4 
 
 .4 
 .4 
 
 .5 
 
 .5 
 
 .2 
 .1 
 .1 
 .1 
 .1 
 
 0.2 
 
 2 
 
 
 17 
 
 
 1.0 
 
 3 
 
 
 18 
 
 
 1.4 
 
 4 
 
 
 19 
 
 0.2 
 .1 
 
 .1 
 .2 
 .5 
 .5 
 .6 
 
 .7 
 .5 
 .5 
 .4 
 .4 
 
 1.2 
 
 5 
 
 
 20 
 
 .7 
 
 6 
 
 
 21 
 
 .2 
 
 7 
 
 
 22 
 
 .1 
 
 8 
 
 
 23 
 
 .1 
 
 9 
 
 
 24 
 
 .1 
 
 10 
 
 
 25 
 
 1.0 
 
 11 
 
 
 26 
 
 .7 
 
 12 
 
 
 27 
 
 .8 
 
 13 
 
 
 28 
 
 .6 
 
 14 
 
 
 29 
 
 1.0 
 
 15 
 
 
 30 
 
 .8 
 
 
 
 31 
 
 .6 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 291 
 
 Daily discharge, in second-feet, at station No. 45 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.10 
 .10 
 .10 
 .05 
 .05 
 
 .10 
 .10 
 .20 
 .30 
 .20 
 
 .10 
 .05 
 .02 
 .01 
 .01 
 
 .01 
 (a) 
 
 (a) 
 
 "W 
 
 0.20 
 .10 
 .05 
 
 .02 
 .01 
 .01 
 .20 
 .50 
 
 1.00 
 1.50 
 1.80 
 1.20 
 .80 
 
 .40 
 .50 
 .50 
 .60 
 
 0.30 
 .30 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .10 
 .10 
 .15 
 
 .20 
 .40 
 .70 
 .80 
 .20 
 
 .20 
 .60 
 .90 
 .70 
 .50 
 
 .20 
 .10 
 .40 
 .30 
 .20 
 
 .10 
 .10 
 .05 
 .05 
 .40 
 1.50 
 
 1.00 
 .60 
 .20 
 .20 
 
 . 20 
 
 .30 
 
 1.50 
 
 1.20 
 
 .90 
 
 .40 
 
 .40 
 .30 
 .30 
 .20 
 .30 
 
 .30 
 .50 
 .30 
 .30 
 .20 
 
 .50 
 .40 
 .20 
 .30 
 .30 
 
 .30 
 .20 
 .20 
 .10 
 .20 
 
 0.90 
 1.10 
 1.00 
 1.20 
 1.50 
 
 .80 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .50 
 .02 
 
 .01 
 .01 
 .01 
 .04 
 .02 
 .02 
 
 ""6.20' 
 
 .20 
 .20 
 .20 
 
 0.10 
 .30 
 .40 
 .30 
 .30 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .80 
 .40 
 .20 
 .40 
 .20 
 
 .10 
 .20 
 .20 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .20 
 .30 
 
 .30 
 .20 
 .20 
 .20 
 .20 
 .10 
 
 0.10 
 .10 
 
 1.80 
 .40 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .30 
 .30 
 .30 
 
 .20 
 .30 
 .40 
 .50 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .20 
 .30 
 .20 
 .20 
 .10 
 
 0.30 
 .50 
 .90 
 
 1.50 
 .40 
 
 .40 
 .60 
 .20 
 .20 
 .20 
 
 .20 
 .30 
 .20- 
 .20 
 .20 
 
 .30 
 .20 
 .20 
 .10 
 .10 
 
 .20 
 .20 
 .10 
 .10 
 .05 
 
 .02 
 .02 
 .02 
 .02 
 .40 
 
 0.30 
 .30 
 .20 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .10 
 .10 
 
 .10 
 .20 
 .10 
 .30 
 .30 
 
 .10 
 .80 
 .20 
 .30 
 .60 
 
 .70 
 .90 
 1.30 
 .50 
 .20 
 
 .20 
 
 1.80 
 
 1.00 
 
 1.00 
 
 .80 
 
 .60 
 
 0.40 
 .20 
 .80 
 .30 
 .20 
 
 .10 
 .10 
 .10 
 .60 
 1.50 
 
 .90 
 .40 
 .30 
 .20 
 .10 
 
 .60 
 1.00 
 .40 
 .80 
 .20 
 
 .30 
 .30 
 .30 
 .30 
 .20 
 
 .10 
 .20 
 .50 
 .30 
 .20 
 
 0.50 
 
 2 
 
 .90 
 
 3 
 
 .30 
 
 4 
 
 .40 
 
 5 
 
 .20 
 
 6 .-.. 
 
 7 
 
 .20 
 .20 
 
 8 
 
 .40 
 
 9 
 
 .20 
 
 10 
 
 .20 
 
 11 
 
 .10 
 
 12 
 
 .10 
 
 13 
 
 .10 
 
 14 
 
 .10 
 
 
 .10 
 
 
 .20 
 
 17 
 
 .10 
 
 18 
 
 .10 
 
 19 
 
 (a) 
 
 .20 
 
 
 .60 
 
 21 
 
 ■i 
 
 .20 
 
 22... 
 
 .90 
 
 23 
 
 1.60 
 
 24 
 
 1.00 
 
 
 .20 
 
 26 
 
 
 .30 
 
 27 
 
 (a) 
 
 .20 
 
 28 
 
 .20 
 
 29 
 
 
 .20 
 
 30 
 
 (o) 
 
 .10 
 
 31... 
 
 .10 
 
 
 
 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 45 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 September 19-29. 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.40 
 .25 
 .24 
 .45 
 
 .05 
 .32 
 .32 
 .41 
 
 Run-off 
 (total in 
 acre-feet). 
 
 15.10 
 14.10 
 27.80 
 
 3.07 
 18.40 
 19.70 
 24.40 
 
 Month. 
 
 1912— Continued. 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 0.32 
 .01 
 .23 
 .26 
 .28 
 .43 
 .40 
 .33 
 
 Run-off 
 (total in 
 acre-feet). 
 
 19.70 
 .60 
 14.10 
 16.00 
 16.70 
 26.40 
 23.80 
 20.30 
 
 203.00 
 
 Discharge measurements at station No. 46 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge* 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 1.47 
 1.24 
 
 Sec.-ft. 
 3.49 
 
 .86 
 
 Nov. 28 
 
 Feet. 
 1.76 
 1.76 
 
 Sec.-ft. 
 12.0 
 
 Sept. 26 
 
 Dec. 10 
 
 11.4 
 
 
 
 
 Note.— Bed of stream of cobbles and some large bowlders; section near gage quite rough; probably 
 permanent. One channel at all stages. 
 
292 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 46 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 1.25 
 
 "*2." 42* 
 
 1.61 
 1.55 
 
 2.24 
 "3.'60" 
 
 "iii" 
 "i."76" 
 
 1.72 
 2.35 
 4.72 
 
 3.00 
 2.26 
 2.30 
 1.92 
 
 1.78 
 
 2.16 
 3.20 
 2.19 
 3.00 
 2.08 
 
 1.96 
 1.90 
 1.94 
 
 "i."80" 
 
 1.72 
 1.64 
 1.75 
 
 "I'M' 
 
 2.96 
 
 2 
 
 
 
 
 
 
 
 
 3.40 
 
 3 
 
 1.60 
 1.42 
 1.35 
 
 1.42 
 1.42 
 1.48 
 1.45 
 1.41 
 
 1.35 
 1.30 
 1.28 
 
 1.20 
 
 1.18 
 
 ""6." 55" 
 .55 
 
 1.67 
 1.55 
 1.49 
 
 1.82 
 1.98 
 2.00 
 
 2.01 
 
 
 
 2.09 
 
 L82 
 
 1.74 
 
 ~"i.'62* 
 1.52 
 1.49 
 
 2.35 
 2.02 
 1.54 
 
 "T46" 
 1.39 
 1.40 
 1.40 
 
 2.06 
 
 4 
 
 2.45 
 2.00 
 
 ""i.'oo" 
 
 "\*95* 
 
 "2." 36' 
 
 2.05 
 2.11 
 1.94 
 1.82 
 
 1.65 
 2.02 
 1.71 
 1.64 
 1.54 
 
 1.65 
 
 i.44 
 1.34 
 
 1.28 
 
 ""i23* 
 
 '"i.34' 
 
 1.34 
 1.92 
 1.74 
 1.74 
 
 "2. 88* 
 1.84 
 2.06 
 2.49 
 
 "2. 78" 
 3.22 
 2.40 
 1.98 
 
 1.96 
 4.12 
 2.98 
 3.10 
 
 **2.' 26" 
 
 1.96 
 
 5 
 
 1.80 
 
 6 
 
 1.74 
 
 7 
 
 "".hi' 
 
 .51 
 .50 
 
 .50 
 
 .50 
 
 1.38 
 
 1.06 
 
 .91 
 .85 
 .80 
 .90 
 1.55 
 
 1.41 
 
 1.90 
 
 8 
 
 
 
 2.13 
 
 9 
 
 1.50 
 1.51 
 
 1.60 
 2.21 
 2.41 
 
 2.09 
 
 1.84 
 2.15 
 
 ' "2*26" 
 
 2.00 
 1.71 
 1.76 
 
 3.24 
 2.42 
 
 2.31 
 2.02 
 
 1.84 
 1.76 
 
 "i.92" 
 
 1.91 
 1.90 
 
 2.12 
 2.05 
 1.86 
 
 
 
 1.91 
 
 10 
 
 
 
 1.75 
 
 11 
 
 
 
 1.65 
 
 12 
 
 
 
 
 1.38 
 1.48 
 
 1.59 
 
 13 
 
 1.75 
 
 1.31 
 
 1.79 
 
 1.52 
 
 14 
 
 1.53 
 
 15 
 
 
 1.22 
 
 1.56 
 
 1.65 
 1.48 
 
 1.62 
 
 16 
 
 1.82 
 
 17 
 
 1.45 
 
 1.35 
 
 
 1.64 
 
 18 
 
 
 
 1.67 
 
 1.51 
 1.42 
 1.39 
 
 1.39 
 1.39 
 1.36 
 1.27 
 
 1.22 
 1.19 
 1.17 
 1.15 
 1.62 
 
 1.54 
 
 19 
 
 1.08 
 1.05 
 
 1.02 
 .98 
 .95 
 .95 
 
 1.46 
 
 
 
 1.76 
 
 20 
 
 
 
 
 2.36 
 
 21 
 
 22 
 
 
 1.30 
 
 1.41 
 
 "T29" 
 1.25 
 1.50 
 1.37 
 
 1.20 
 1.68 
 
 1.84 
 2.65 
 
 23 
 
 1.38 
 
 
 1.40 
 1.70 
 
 1.44 
 1.46 
 1.44 
 1.39 
 
 5.50 
 
 24 
 
 4.20 
 
 25 
 
 - 
 
 1.62 
 
 1.56 
 1.48 
 1.41 
 1.36 
 1.51 
 2.61 
 
 2.12 
 
 2.25 
 2.15 
 2.08 
 
 1.35 
 
 "i.36* 
 
 1.59 
 
 1.45 
 1.55 
 1.48 
 
 2.20 
 
 26 
 
 
 
 2.80 
 
 27 
 
 .92 
 .90 
 
 .85 
 .82 
 
 
 2.20 
 
 28 
 
 1.90 
 
 29 
 
 1.80 
 
 30 
 
 
 
 
 
 31 
 
 
 1.20 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 46 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 33.2 
 36.0 
 40.8 
 45.8 
 51.2 
 
 38.4 
 27.8 
 26.0 
 24.8 
 23.0 
 
 15.5 
 16.0 
 16.5 
 17.0 
 17.5 
 
 0.8 
 
 .8 
 
 .8 
 
 2.4 
 
 6.0 
 
 10.2 
 16.5 
 23.0 
 31.8 
 12.2 
 
 19.0 
 26.6 
 36.0 
 48.5 
 63.0 
 
 2.9 
 3.4 
 2.6 
 1.5 
 2.4 
 
 2.3 
 1.5 
 1.7 
 4.4 
 3.2 
 
 4.0 
 
 2.7 
 
 29.0 
 
 48.5 
 
 138.0 
 
 16 
 
 
 18.0 
 18.0 
 10.2 
 5.2 
 4.4 
 
 3.7 
 3.0 
 2.9 
 
 2.7 
 2.4 
 
 2.2 
 
 1.3 
 
 1.1 
 
 .9 
 
 .8 
 .9 
 
 14.0 
 23.0 
 63.0 
 107.0 
 151.0 
 
 199.0 
 188.0 
 192.0 
 165.0 
 47.6 
 
 18.0 
 9.8 
 6.6 
 3.7 
 2.4 
 
 90.5 
 
 2 
 
 
 17 
 
 
 140.0 
 
 3 .. 
 
 
 18 
 
 
 153.0 
 
 4 
 
 
 19 
 
 15.5 
 11.4 
 
 8.1 
 9.8 
 68.5 
 74.0 
 58.0 
 
 55.0 
 44.9 
 38.5 
 29.0 
 31.1 
 
 105.0 
 
 5 
 
 
 20 
 
 90.5 
 
 6 
 
 
 21 
 
 40.0 
 
 7 
 
 
 22 
 
 20.5 
 
 8 
 
 
 23 
 
 13.0 
 
 9 
 
 
 24 
 
 11.0 
 
 10 
 
 
 25 
 
 40.0 
 
 11. 
 
 
 26 
 
 23.0 
 
 12 
 
 
 27 
 
 22.0 
 
 13 
 
 
 28 
 
 18.0 
 
 14 
 
 
 29 
 
 30.4 
 
 15... 
 
 
 30... 
 
 23.0 
 
 
 
 31 
 
 18.0 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 293 
 
 Daily discharge, in second-feet, at station No. 46 at 2,100-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 6.00 
 6.00 
 6.00 
 2.70 
 1.80 
 
 2.70 
 2.70 
 3.70 
 3.20 
 2.60 
 
 1.80 
 1.30 
 1.20 
 1.00 
 .70 
 
 .60 
 .50 
 .40 
 .30 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 2.20 
 .40 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 5.00 
 
 100.00 
 300.00 
 400.00 
 300.00 
 100.00 
 
 50.00 
 10.00 
 10.00 
 10.00 
 
 10.00 
 10.00 
 8.10 
 5.00 
 3.90 
 
 3.20 
 2.60 
 3.30 
 4.00 
 4.20 
 
 6.00 
 37.00 
 53.00 
 64.00 
 28.00 
 
 13.00 
 32.00 
 40.00 
 38.00 
 36.00 
 
 23.00 
 9.40 
 
 11.00 
 9.00 
 6.60 
 
 5.20 
 3.70 
 2.60 
 2.00 
 4.20 
 74.00 
 
 30.00 
 20.00 
 14.00 
 22.00 
 23.00 
 
 24.00 
 250.00 
 200.00 
 144.00 
 
 55.00 
 
 45.00 
 24.00 
 18.00 
 11.00 
 13.00 
 
 11.00 
 30.00 
 19.00 
 18.00 
 18.00 
 
 30.00 
 26.00 
 16.00 
 40.00 
 30.00 
 
 40.00 
 32.00 
 28.00 
 20.00 
 40.00 
 
 45.00 
 50.00 
 50.00 
 58.00 
 65.00 
 
 23.00 
 20.00 
 17.00 
 17.00 
 14.00 
 
 14.00 
 11.00 
 11.00 
 10.00 
 10.00 
 
 6.60 
 3.20 
 3.30 
 3.40 
 3.10 
 
 2.80 
 2.50 
 2.20 
 2.00 
 1.80 
 
 1.60 
 1.30 
 1.20 
 1.00 
 .80 
 .70 
 
 "i'.lb' 
 
 ""."80" 
 ""i."80" 
 
 1.30 
 
 "5."80' 
 
 3.20 
 5.00 
 3.70 
 
 10.00 
 18.00 
 28.00 
 18.00 
 14.00 
 
 11.00 
 8.80 
 6.60 
 4.40 
 3.90 
 
 35.00 
 20.00 
 13.00 
 15.00 
 5.20 
 
 5.00 
 5.00 
 4.00 
 4.00 
 3.00 
 
 2.60 
 2.50 
 2.40 
 9.00 
 6.00 
 
 3.00 
 3.40 
 3.00 
 2.30 
 2.00 
 1.50 
 
 1.00 
 
 5.00 
 
 48.00 
 
 24.00 
 
 4.80 
 
 3.60 
 2.40 
 2.30 
 2.40 
 2.40 
 
 2.30 
 2.20 
 3.70 
 5.00 
 7.50 
 
 3.70 
 3.00 
 8.10 
 10.00 
 5.00 
 
 3.00 
 1.20 
 1.00 
 4.00 
 2.10 
 
 .70 
 8.40 
 7.00 
 6.00 
 £.00 
 4.00 
 
 25.00 
 55.00 
 85.00 
 120.00 
 44.00 
 
 26.00 
 30.00 
 20.00 
 14.00 
 11.20 
 
 7.50 
 24.00 
 9.40 
 7.20 
 4.80 
 
 7.50 
 5.00 
 4.20 
 2.70 
 2.30 
 
 2.30 
 2.30 
 2.00 
 1.10 
 1.00 
 
 .80 
 .70 
 .60 
 .50 
 
 6.60 
 
 6.30 
 5.00 
 4.00 
 3.00 
 1.70 
 
 1.20 
 
 1,00 
 
 .90 
 
 1.00 
 
 1.70 
 
 1.70 
 
 19.00 
 11.00 
 11.00 
 11.00 
 
 10.00 
 105.00 
 15.00 
 27.00 
 62.00 
 
 70.00 
 94.00 
 142.00 
 53.00 
 22.00 
 
 21.00 
 277.00 
 115.00 
 129.00 
 80.00 
 41.00 
 
 39.20 
 40.00 
 187. 00 
 40.00 
 30.00 
 
 10.00 
 9.00 
 9.80 
 
 48.00 
 332.00 
 
 118.00 
 41.00 
 44.00 
 19.00 
 12.00 
 
 33.20 
 140.00 
 
 35.00 
 118.00 
 
 28.00 
 
 21.00 
 18.00 
 20.00 
 16.50 
 13.00 
 
 9.80 
 7.20 
 11.00 
 9.00 
 7.50 
 
 114.00 
 
 2 
 
 163.00 
 
 3 
 
 27.00 
 
 4 
 
 21.00 
 
 5 
 
 13.00 
 
 6 
 
 11.00 
 
 7 
 
 18.00 
 
 8 
 
 31.00 
 
 9 
 
 18.00 
 
 10 
 
 11.00 
 
 11 
 
 7.50 
 
 12 
 
 5.80 
 
 13 
 
 4.40 
 
 
 4.60 
 
 15 
 
 6.60 
 
 16 
 
 14.00 
 
 17 
 
 7.20 
 
 18 
 
 4.80 
 
 
 11.00 
 
 20 
 
 49.00 
 
 21 
 
 15.00 
 
 22 
 
 80.00 
 
 23 
 
 432.00 
 
 24 
 
 264.00 
 
 25 
 
 36.00 
 
 26 
 
 96.00 
 
 27 
 
 36.00 
 
 28, 
 
 18.00 
 
 29 
 
 13.00 
 
 30 
 
 10.00 
 
 31 
 
 10.00 
 
 
 
 Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 46 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 September 19-29. 
 
 October 
 
 November 
 
 December 
 
 1912, 
 
 January 
 
 February 
 
 March 
 
 April 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 37.00 
 16.40 
 49.60 
 35.00 
 
 1.50 
 44.40 
 17.80 
 43.00 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1,020 
 2,960 
 2,160 
 
 92.20 
 2,550.00 
 1,090.00 
 2,560.00 
 
 Month. 
 
 1912— Continued 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 14.60 
 
 2.00 
 
 8.70 
 
 6.09 
 
 17.40 
 
 43.30 
 
 48.90 
 
 50.10 
 
 24.50 
 
 Run-off 
 (total in 
 acre-feet). 
 
 898.00 
 
 119.00 
 
 535.00 
 
 374.00 
 
 1,040.00 
 
 2,660.00 
 
 2,910.00 
 
 3,080.00 
 
 17,900.00 
 
 Discharge measurements at station No. 47 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 1.64 
 1.10 
 2.24 
 
 Sec.-ft. 
 2.11 
 .65 
 5.86 
 
 Nov. 19... 
 
 Feet. 
 2.45 
 2.21 
 
 Sec.-ft. 
 
 7.85 
 
 Sept. 26 
 
 Dec. 10 . . 
 
 
 4.48 
 
 Oct. 25... 
 
 
 
 
 
 Note.— Bed of stream of cobbles and some large bowlders. Section near gage quite rough. Station 
 probably permanent. One channel at all stages. 
 
294 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 47 at 2,700-foot level, near Eilo, Hawaii, for 1912, 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 
 
 Bay. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Deo. 
 
 1 
 
 
 
 
 
 
 
 
 1.07 
 
 ""2*55" 
 
 1.81 
 1.71 
 
 2.55 
 "3.50" 
 "2.* 46" 
 
 "*2."i6* 
 2.15 
 2.75 
 3.65 
 
 3.10 
 2.56 
 2.50 
 2.35 
 2.18 
 
 2.51 
 3.10 
 2.60 
 2.95 
 2.44 
 
 2.37 
 2.34 
 2.45 
 
 ""2."i8" 
 
 2.11 
 2.10 
 2.30 
 
 "*2.'i4" 
 
 3.05 
 
 2 
 
 
 
 
 
 
 
 
 3.55 
 
 3 
 
 1.52 
 1.28 
 1.25 
 
 1.25 
 1.28 
 1.35 
 1.34 
 1.30 
 
 1.22 
 1.15 
 1.08 
 1.00 
 .88 
 
 
 2.17 
 1.91 
 1.62 
 
 2.16 
 2.36 
 2.42 
 
 2.55 
 
 
 
 2.55 
 2.34 
 2.22 
 
 2.16 
 
 "i.'94" 
 1.71 
 1.54 
 
 2.92 
 2.37 
 1.72 
 
 "i."60* 
 
 1.47 
 1.65 
 1.65 
 
 2.48 
 
 4 
 
 2.55 
 2.10 
 
 "Too" 
 
 "\*9o" 
 
 "2.'50" 
 
 2.34 
 2.55 
 2.55 
 2.12 
 
 1.92 
 2.32 
 2.06 
 1.90 
 
 1.78 
 
 2.06 
 
 1.52 
 1.32 
 
 1.24 
 
 "i.'22* 
 
 2.46 
 
 5 
 
 2.30 
 
 6 
 
 2.22 
 
 7 .... 
 
 
 1.48 
 
 2.30 
 
 8 
 
 
 
 2.47 
 
 9 
 
 "i'.2h" 
 1.11 
 .70 
 
 .35 
 
 .28 
 
 1.41 
 
 2.21 
 
 2.01 
 2.01 
 
 2.14 
 2.60 
 2.76 
 2.79 
 2.45 
 
 2.60 
 
 "*2."54" 
 
 2.39 
 2.19 
 2.21 
 
 3.16 
 2.68 
 
 2.59 
 2.45 
 
 "*2."25" 
 2.43 
 
 2.32 
 
 ""2*39" 
 2.42 
 2.39 
 
 2.51 
 2.48 
 2.32 
 
 
 
 2-36 
 
 10. . . 
 
 
 
 1.30 
 
 1.27 
 
 1.88 
 1.54 
 1.82 
 
 "% 85* 
 2.05 
 2.32 
 
 2.78 
 
 "% 78" 
 3.10 
 2.58 
 2.25 
 
 2.30 
 3.75 
 2.90 
 2.92 
 
 "2.66" 
 
 2.20 
 
 11 
 
 
 
 1.96 
 
 12 
 
 
 
 
 1.49 
 1.76 
 
 1.92 
 
 13 
 
 1.70 
 
 1.20 
 
 2.08 
 
 1.76 
 
 14 
 
 1.89 
 
 15 
 
 
 
 1.10 
 
 1.70 
 
 2.10 
 1.69 
 
 2.06 
 
 
 2.30 
 
 17... 
 
 1.52 
 
 1.27 
 
 
 2.04 
 
 18 
 
 
 
 2.04 
 
 1.76 
 1.59 
 1.49 
 
 1.51 
 1.54 
 1.35 
 1.26 
 
 1.07 
 
 .99 
 .91 
 
 .89 
 .22 
 
 1.91 
 
 19 
 
 .75 
 
 .68 
 
 .62 
 .58 
 .55 
 .55 
 
 1.58 
 
 
 
 2.31 
 
 20 
 
 
 
 
 2.72 
 
 21 
 
 
 1.20 
 
 1.39 
 
 1.16 
 
 1.28 
 1.24 
 
 1.14 
 1.71 
 
 2.30 
 
 22 
 
 2.74 
 
 23 
 
 1.50 
 
 
 1.31 
 
 2.06 
 
 1.65 
 1.69 
 1.56 
 1.51 
 
 3.32 
 
 24 
 
 3.00 
 
 25 
 
 
 2.14 
 
 2.06 
 1.81 
 1.59 
 1.42 
 1.89 
 3.16 
 
 2.45 
 
 2.55 
 2.45 
 2.25 
 
 1.40 
 **i.*38" 
 
 1.85 
 
 1.70 
 1.90 
 1.62 
 
 2.47 
 
 26 
 
 
 
 2.92 
 
 27 
 
 .52 
 .50 
 .48 
 .45 
 
 
 2.46 
 
 28 
 
 2.30 
 
 29 
 
 2.32 
 
 30 
 
 
 
 
 
 31 
 
 
 1.30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 47 at 2,700-foot level, near Silo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 9.20 
 9.20 
 10.30 
 11.40 
 12.60 
 
 11.00 
 9.56 
 9.78 
 9.92 
 
 10.10 
 
 7.30 
 7.60 
 7.92 
 8.24 
 8.56 
 
 0.47 
 
 .47 
 
 .47 
 
 1.40 
 
 3.10 
 
 4.10 
 5.50 
 7.15 
 9.20 
 5.14 
 
 6.25 
 7.60 
 9.20 
 11.00 
 13.00 
 
 1.52 
 1.30 
 1.04 
 1.00 
 1.22 
 
 1.04 
 .88 
 .97 
 1.64 
 1.50 
 
 1.44 
 
 1.30 
 
 13.00 
 
 21.00 
 
 34.00 
 
 16 
 
 
 8.72 
 8.88 
 5.14 
 2.86 
 2.14 
 
 1.72 
 1.42 
 1.32 
 1.20 
 1.08 
 
 .97 
 
 .82 
 .70 
 .58 
 .50 
 
 .47 
 
 4.90 
 
 8.72 
 
 14.20 
 
 21.20 
 
 27.60 
 
 35.50 
 31.00 
 34.60 
 27.00 
 12.00 
 
 6.10 
 4.10 
 3.26 
 2.30 
 1.76 
 
 16.00 
 
 2 
 
 
 17 
 
 
 26.00 
 
 3 
 
 
 18 
 
 
 32.50 
 
 4 
 
 
 19 
 
 6.85 
 5.50 
 
 4.40 
 5.50 
 16.00 
 14.50 
 13.00 
 
 9.56 
 11.00 
 14.50 
 10.10 
 10.10 
 
 20.40 
 
 5 
 
 
 20 
 
 18.00 
 
 6 
 
 
 21 
 
 9.20 
 
 7 
 
 
 22 
 
 6.10 
 
 8 
 
 
 23 
 
 4.90 
 
 9 
 
 
 24 
 
 3.10 
 
 10 
 
 
 25 
 
 9.20 
 
 11 
 
 
 26 
 
 3.90 
 
 12 
 
 
 27.. 
 
 3.74 
 
 13 
 
 
 28 
 
 2.80 
 
 14 
 
 
 29 
 
 5.50 
 
 15 
 
 
 30 
 
 4.90 
 
 
 
 31 
 
 3.90 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 295 
 
 Daily discharge^ in second-feet, at station No. 47 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.50 
 1.50 
 1.80 
 .95 
 -.90 
 
 .90 
 
 .95 
 
 1.10 
 
 1.10 
 
 1.10 
 
 .90 
 .75 
 .65 
 .55 
 .45 
 
 .35 
 .30 
 .30 
 .30 
 
 .25 
 .25 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .15 
 .15 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 ,10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .90 
 .70 
 .30 
 
 .20 
 .10 
 .10 
 1.20 
 5.00 
 
 20.00 
 35.00 
 43.00 
 30.00 
 20.00 
 
 10.00 
 5.00 
 5.00 
 5.00 
 
 5.00 
 5.00 
 4.60 
 2.50 
 1.65 
 
 1.50 
 1.35 
 2.30 
 3.20 
 3.20 
 
 4.30 
 11.00 
 15.00 
 15.50 
 
 8.40 
 
 5.60 
 11.00 
 10.50 
 10.00 
 
 9.90 
 
 6.25 
 
 4.80 
 5.00 
 4.60 
 4.30 
 
 3.60 
 2.15 
 1.60 
 1.25 
 2.45 
 24.80 
 
 15.00 
 10.00 
 4.50 
 7.00 
 7.90 
 
 10.10 
 35.00 
 30.00 
 24.80 
 12.60 
 
 10.75 
 8.40 
 7.00 
 5.50 
 8.10 
 
 6.40 
 7.00 
 7.45 
 7.90 
 7.45 
 
 9.40 
 8.90 
 6.40 
 7.40 
 8.40 
 
 10.10 
 8.40 
 5.50 
 6.00 
 6.00 
 
 6.00 
 6.00 
 7.00 
 10.10 
 6.00 
 
 3.90 
 3.00 
 2.00 
 2.00 
 2.00 
 
 2.00 
 2.00 
 1.80 
 1.70 
 1.60 
 
 1.50 
 1.45 
 1.50 
 1.55 
 1.50 
 
 1.50 
 1.50 
 1.40 
 1.30 
 1.20 
 
 1.20 
 1.15 
 1.10 
 1.10 
 1.10 
 1.00 
 
 0.80 
 .60 
 .60 
 .60 
 .55 
 
 .50 
 .45 
 .50 
 
 .50 
 .60 
 
 .70 
 .70 
 .85 
 .80 
 .70 
 
 .80 
 .95 
 .90 
 .90 
 .90 
 
 .85 
 1.00 
 1.50 
 2.00 
 2.30 
 
 1.80 
 2.50 
 1.65 
 1.50 
 1.50 
 
 2.00 
 5.00 
 10.10 
 6.70 
 5.15 
 
 4.50 
 3.60 
 2.75 
 1.85 
 1.50 
 
 20.00 
 
 10.00 
 
 3.75 
 
 5.00 
 
 1.80 
 
 1.50 
 1.50 
 1.50 
 1.50 
 1.50 
 
 1.20 
 1.10 
 1.00 
 3.60 
 2.60 
 
 1.70 
 1.80 
 1.50 
 1.40 
 1.00 
 1.00 
 
 0.65 
 1.00 
 18.60 
 6.20 
 1.85 
 
 1.70 
 1.60 
 1.35 
 1.70 
 1.70 
 
 1.60 
 1.40 
 2.00 
 3.00 
 3.90 
 
 1.80 
 2.60 
 3.40 
 6.00 
 2.00 
 
 1.00 
 
 .85 
 .65 
 .95 
 .90 
 
 .75 
 1.85 
 1.50 
 1.20 
 1.00 
 1.50 
 
 8.00 
 10.10 
 35.00 
 35.00 
 
 9.20 
 
 6.70 
 10.10 
 10.10 
 4.10 
 3.40 
 
 2.60 
 6.40 
 3.60 
 2.50 
 2.05 
 
 3.60 
 
 2.80 
 2.00 
 1.60 
 1.40 
 
 1.40 
 
 1.50 
 
 1.10 
 
 .95 
 
 .80 
 
 .65 
 .55 
 .45 
 .45 
 .05 
 
 2.15 
 1.85 
 1.65 
 1.45 
 1.40 
 
 .90 
 .90 
 .90 
 .90 
 1.00 
 
 .95 
 1.40 
 1.50 
 2.15 
 2.00 
 
 2.00 
 17.00 
 3.50 
 6.40 
 15.40 
 
 15.40 
 15.40 
 23.00 
 10.70 
 5.50 
 
 6.10 
 41.50 
 18.00 
 18.50 
 16.00 
 12.20 
 
 10.10 
 20.00 
 34.00 
 10.00 
 7.60 
 
 5.00 
 4.50 
 4.40 
 14.50 
 38.50 
 
 23.00 
 10.30 
 9.20 
 6.85 
 4.70 
 
 9.40 
 23.00 
 11.00 
 19.50 
 
 8.25 
 
 7.15 
 6.70 
 8.40 
 6.60 
 4.70 
 
 4.00 
 3.90 
 6.10 
 5.20 
 4.30 
 
 22.00 
 
 2 
 
 35.50 
 
 3 
 
 8.70 
 
 4 
 
 8.55 
 
 5 
 
 6 
 
 6.10 
 5.15 
 
 7 
 
 6.10 
 
 8 
 
 8.70 
 
 9 
 
 7.00 
 
 10 
 
 4.90 
 
 11 
 
 2.85 
 
 12 
 
 2.60 
 
 13 
 
 2.00 
 
 
 2.45 
 
 15 
 
 3.60 
 
 16 
 
 6.10 
 
 17 
 
 3.40 
 
 18 
 
 2.55 
 
 
 6.25 
 
 
 13.60 
 
 21 
 
 6.10 
 
 22 
 
 14.20 
 
 23 ... 
 
 28.60 
 
 
 21.00 
 
 25 
 
 8. 78 
 
 26 
 
 18.60 
 
 27 
 
 8.55 
 
 28 
 
 6.10 
 
 29 
 
 6.40 
 
 30 
 
 5.00 
 
 31 
 
 5.00 
 
 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 47 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Month. 
 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1911 
 September 19-29. 
 
 October... 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March. 
 
 April 
 
 10.10 
 
 5.85 
 10.60 
 8.16 
 
 361.00 
 634.00 
 503.00 
 
 .61 
 6.30 
 4.27 
 10.30 
 
 37.50 
 362.00 
 263. 00 
 613.00 
 
 1912— Continued 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 2.52 
 1.02 
 3.52 
 2.46 
 5.60 
 7.99 
 11.00 
 9.24 
 
 155.00 
 60.70 
 216. 00 
 151.00 
 333.00 
 491. 00 
 655. 00 
 568.00 
 
 5.38 
 
 3,910.00 
 
 Discharge measurements at station No. 48 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.j 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16... 
 
 Feet. 
 0.45 
 .36 
 
 .47 
 
 Sec.-ft. 
 0.07 
 
 .23 
 
 Nov. 19 
 
 Feet. 
 0.58 
 .48 
 
 Sec.-ft. 
 0.57 
 
 Sept. 26 
 
 Dec. 10 
 
 .19 
 
 Oct. 25 
 
 
 
 
 
 Note.— Bed of stream of gravel and some small cobbles, probably slightly shifting. One channel at all 
 
296 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 48 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayefi, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 0.47 
 
 '"6*68" 
 1.40 
 1.42 
 1.57 
 
 1.57 
 1.67 
 .51 
 .52 
 
 .40 
 .54 
 .44 
 .44 
 .40 
 
 .50 
 
 0.54 
 .55 
 
 """.45" 
 
 .42 
 
 .42 
 
 ""."42' 
 
 ""."44" 
 
 .44 
 .62 
 .64 
 .56 
 
 ""."72" 
 
 .51 
 .69 
 .75 
 
 '""."76* 
 
 .88 
 .61 
 .47 
 
 .70 
 .86 
 .86 
 .75 
 
 ""."76' 
 
 0.56 
 ""."96' 
 ""."56" 
 
 ""."43" 
 
 .44 
 .84 
 1.06 
 
 .75 
 .59 
 .63 
 .52 
 .44 
 
 .80 
 .90 
 .79 
 .80 
 .55 
 
 .67 
 .54 
 .62 
 
 '""."46" 
 
 .47 
 .45 
 .59 
 
 *".*54' 
 
 1 10 
 
 2 
 
 
 
 
 
 
 
 
 1 12 
 
 3 
 
 0.46 
 .44 
 .42 
 
 .50 
 .52 
 .65 
 .62 
 .58 
 
 .52 
 .48 
 .45 
 .44 
 .41 
 
 .38 
 
 --(a)-- 
 («) 
 
 0.50 
 .47 
 .43 
 
 0.61 
 .66 
 .61 
 
 .72 
 
 
 
 0.70 
 .60 
 .54 
 
 .50 
 
 "".*48" 
 .45 
 .47 
 
 .90 
 
 .69 
 .49 
 
 "".'49" 
 .44 
 .51 
 .51 
 
 .64 
 
 4 
 
 1.06 
 .99 
 
 ""6." 48' 
 """.~46" 
 
 .55 
 
 5 
 
 .49 
 
 6 
 
 .46 
 
 7 
 
 w 
 
 (?) 
 
 (a) 
 
 (a) 
 
 0.61 
 .50 
 .40 
 
 .40 
 .39 
 .35 
 .61 
 .80 
 
 1.20 
 
 .49 
 
 .51 
 
 8 
 
 
 
 56 
 
 9 
 
 .51 
 .51 
 
 .54 
 .68 
 .73 
 
 .77 
 .56 
 
 .51 
 .76 
 
 "".'59* 
 
 .52 
 .50 
 .49 
 
 .91 
 
 .72 
 
 .65 
 .61 
 
 .59 
 .64 
 
 .55 
 
 "**."62" 
 .59 
 
 .58 
 
 .68 
 .65 
 .64 
 
 
 
 .52 
 
 10 
 
 
 
 .47 
 
 11 
 
 
 
 .42 
 
 12 
 
 
 
 
 .46 
 .52 
 
 .40 
 
 13 
 
 .59 
 
 .58 
 
 .50 
 
 .38 
 
 14 
 
 .46 
 
 15 
 
 
 .52 
 
 .43 
 
 .55 
 .43 
 
 .49 
 
 16 
 
 .62 
 
 17 
 
 .53 
 
 .43 
 
 
 .43 
 
 18 
 
 
 
 .64 
 
 .43 
 .40 
 .39 
 
 .42 
 .42 
 .40 
 .38 
 
 .35 
 .35 
 .34 
 .34 
 .60 
 
 .50 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 .54 
 
 
 
 .60 
 
 20 
 
 
 
 
 .72 
 
 21 
 
 
 .45 
 
 .40 
 
 ""."46" 
 .40 
 .40 
 .40 
 
 .41 
 .52 
 
 .52 
 
 22 
 
 .72 
 
 23 
 
 .57 
 
 
 .44 
 
 .55 
 .50 
 
 .44 
 .50 
 
 1.12 
 
 24 
 
 .83 
 
 25 
 
 
 .52 
 
 .52 
 .48 
 .45 
 .44 
 .63 
 1.00 
 
 .69 
 
 .7& 
 .72 
 .71 
 
 .52 
 '"'.hi' 
 
 .58 
 
 .51 
 
 .52 
 .49 
 
 .58 
 
 26 
 
 
 
 .80 
 
 27 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 .60 
 
 28 
 
 .50 
 
 29 
 
 .54 
 
 30... 
 
 
 
 
 
 31 
 
 
 .50 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 48 at 2,700-foot level, near Hilo, Hawaii^ 
 
 for 1911. 
 
 Day. 
 
 Sept.. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.00 
 
 1.00 
 1.10 
 1.24 
 1.45 
 
 1.38 
 1.24 
 1.31 
 1.38 
 1.45 
 
 1.00 
 1.05 
 1.10 
 1.17 
 1.24 
 
 0.21 
 .21 
 .21 
 .25 
 .60 
 
 .75 
 
 .90 
 
 1.05 
 
 1.17 
 
 .70 
 
 .90 
 1.10 
 1.38 
 1.66 
 1.96 
 
 0.25 
 
 .17 
 .13 
 .15 
 .17 
 
 .25 
 
 .21 
 
 .25 
 
 3.20 
 
 1.45 
 
 1.66 
 .85 
 2.90 
 5.25 
 7.78 
 
 16 
 
 
 1.31 
 
 1.45 
 
 .85 
 
 .42 
 
 .39 
 
 .32 
 .25 
 .28 
 .32 
 .36 
 
 .39 
 .23 
 .23 
 .23 
 .23 
 .21 
 
 1.17 
 2.12 
 3.40 
 4.70 
 6.13 
 
 7.56 
 6.90 
 8.22 
 7.78 
 1.96 
 
 .60 
 .53 
 .53 
 .42 
 .39 
 
 2.20 
 
 2 
 
 
 17 
 
 
 5.80 
 
 3 
 
 
 18 
 
 
 6.35 
 
 4 
 
 
 19 
 
 0.32 
 .23 
 
 .15 
 
 .42 
 
 1.10 
 
 1.00 
 
 1.24 
 
 1.66 
 1.10 
 1.96 
 1.00 
 1.00 
 
 4.92 
 
 5 
 
 
 20 
 
 2.90 
 
 6 
 
 
 21 
 
 1.24 
 
 7 
 
 
 22 
 
 .32 
 
 8 
 
 
 23 
 
 .32 
 
 9 
 
 
 24 
 
 .28 
 
 10 
 
 
 25 
 
 1.96 
 
 11 
 
 
 26 
 
 1.45 
 
 12 
 
 
 27 
 
 1.80 
 
 13 
 
 
 28 
 
 1.45 
 
 14 
 
 
 29 
 
 2.90 
 
 15 
 
 
 30 
 
 2.70 
 
 
 
 31 
 
 2.20 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 297 
 
 Daily discharge, in second-feet, at station No. 48 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.15 
 .15 
 .15 
 .10 
 .10 
 
 .25 
 .30 
 .85 
 .70 
 .50 
 
 .30 
 .20 
 .15 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 
 (a) 
 
 (a) 
 
 (a) 
 
 (°) 
 (a) 
 (a) 
 (a) 
 
 ( a ) 
 (°) 
 (°) 
 (a) 
 (a) 
 («) 
 
 («) 
 (a) 
 )a) 
 
 l°l 
 [ a ) 
 
 ( a ) 
 
 (Ol 
 
 (a) 
 ( a ) 
 («) 
 
 0.65 
 .25 
 .05 
 
 .05 
 .05 
 .05 
 .65 
 1.80 
 
 5.80 
 9.00 
 11.00 
 8.00 
 3.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 
 0.50 
 .30 
 .25 
 .20 
 .10 
 
 .15 
 .20 
 .25 
 .30 
 .30 
 
 .40 
 1.00 
 1.30 
 1.60 
 
 .45 
 
 .30 
 1.50 
 3.00 
 2.00 
 
 .55 
 
 .30 
 .25 
 .20 
 .20 
 .30 
 
 .30 
 .20 
 .15 
 .10 
 
 .75 
 3.70 
 
 2.00 
 1.00 
 .65 
 .90 
 .65 
 
 1.25 
 
 5.00 
 3.50 
 2.80 
 1.25 
 
 .85 
 .65 
 .60 
 .55 
 
 .80 
 
 .45 
 .90 
 .70 
 .55 
 .55 
 
 1.00 
 .85 
 .80 
 .90 
 
 1.05 
 
 1.60 
 1.25 
 1.15 
 .80 
 1.00 
 
 2.50 
 3.00 
 3.00 
 4.30 
 6.00 
 
 3.60 
 1.00 
 .80 
 .60 
 .60 
 
 .60 
 .60 
 .55 
 .60 
 .70 
 
 .80 
 .35 
 .30 
 .40 
 .30 
 
 .30 
 .30 
 .50 
 1.00 
 .30 
 
 .30 
 .30 
 .40 
 .60 
 .40 
 .25 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .15 
 .20 
 .20 
 .30 
 
 .30 
 .40 
 .50 
 .40 
 .30 
 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 .15 
 .20 
 .30 
 .40 
 .50 
 
 .30 
 .30 
 .20 
 .20 
 .20 
 
 0.30 
 .70 
 
 1.10 
 .60 
 .40 
 
 .25 
 .25 
 .20 
 .15 
 .20 
 
 4.00 
 1.50 
 
 .25 
 1.00 
 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .10 
 .15 
 1.05 
 .80 
 
 .40 
 .25 
 .15 
 .25 
 .20 
 .20 
 
 0.20 
 
 .30 
 
 2.70 
 
 1.05 
 
 .25 
 
 .25 
 .25 
 .15 
 .30 
 .30 
 
 .20 
 .15 
 .30 
 .50 
 .40 
 
 .10 
 .20 
 .80 
 1.00 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .10 
 .30 
 .30 
 .20 
 .20 
 .20 
 
 0.50 
 1.00 
 8.00 
 8.20 
 9.95 
 
 9.95 
 
 11.10 
 
 .30 
 
 .30 
 
 .20 
 
 .05 
 .40 
 .15 
 .15 
 
 .05 
 
 .25 
 .20 
 .10 
 .05 
 .05 
 
 .10 
 .10 
 .05 
 .05 
 .05 
 
 .03 
 .02 
 .02 
 .02 
 .60 
 
 0.40 
 .40 
 .40 
 .15 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .15 
 
 .15 
 .70 
 .80 
 .45 
 .50 
 
 .40 
 1.25 
 
 .30 
 1.05 
 1.45 
 
 1.50 
 1.10 
 2.45 
 .65 
 .20 
 
 1.10 
 2.30 
 2.30 
 1.45 
 1.20 
 1.10 
 
 0.45 
 
 .40 
 
 2.70 
 
 1.50 
 
 .45 
 
 .10 
 
 .10 
 
 .15 
 
 2.10 
 
 4.30 
 
 1.45 
 .55 
 .75 
 .30 
 .15 
 
 1.80 
 2.70 
 1.60 
 1.80 
 .40 
 
 1.05 
 .40 
 .70 
 .50 
 .20 
 
 .20 
 .15 
 .60 
 .50 
 .40 
 
 4.70 
 
 2 
 
 4.90 
 
 3 
 
 .80 
 
 4 
 
 .40 
 
 5 
 
 .25 
 
 6 
 
 .15 
 
 7 
 
 .30 
 
 8 
 
 .45 
 
 9 
 
 .30 
 
 10 
 
 .20 
 
 11 
 
 .10 
 
 12 
 
 .05 
 
 13 
 
 .05 
 
 
 .15 
 
 15 
 
 .25 
 
 16 
 
 .70 
 
 
 .10 
 
 18 
 
 .25 
 
 
 .60 
 
 20 
 
 1.25 
 
 21 
 
 .30 
 
 22 
 
 1.25 
 
 23 
 
 4.90 
 
 24 
 
 2.05 
 
 25 
 
 .55 
 
 26 
 
 1.80 
 
 27 
 
 .60 
 
 28 
 
 .25 
 
 29 
 
 .40 
 
 30 
 
 .20 
 
 31 
 
 .20 
 
 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 chage for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 48 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 September 19-29. 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 0.93 
 1.83 
 2.18 
 2.05 
 
 .14 
 1.53 
 
 Kun-off 
 (total in 
 acre-feet). 
 
 50.80 
 130.00 
 126. 00 
 
 8.61 
 88.00 
 41.80 
 71.40 
 
 Month. 
 
 1912— Continued 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 1.14 
 .24 
 
 1.73 
 .79 
 .95 
 
 70.10 
 14.30 
 30.10 
 22.10 
 103.00 
 48.60 
 56.50 
 56.60 
 
 611.00 
 
 Discharge measurements at station No. 49 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 16 
 
 Feet. 
 -0.09 
 (a) 
 .09 
 
 Sec.-ft. 
 
 
 Nov. 19 
 
 Feet. 
 0.12 
 .08 
 
 Sec.-ft. 
 0.13 
 
 Sept. 26 
 
 Dec. 10... .... 
 
 .05 
 
 Oct. 25 
 
 0.05 
 
 
 
 
 
 a Channel dry. 
 Note.— Bed of stream of silt and sand ;shifting. One channel at all stages. 
 
298 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 49 at 2,700-foot level, near Eilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 
 
 -0.06 
 
 ""6." 26" 
 
 .90 
 
 .88 
 .16 
 
 - .28 
 .32 
 .12 
 .08 
 
 .01 
 
 .88 
 
 .00 
 
 -.01 
 
 -.03 
 
 -.04 
 
 0.08 
 .07 
 
 '-."6i" 
 
 -.11 
 -.10 
 
 '-."io" 
 '-."62* 
 
 -.05 
 .08 
 
 -.02 
 .12 
 
 "".'34" 
 .02 
 .30 
 
 .50 
 
 "".*28" 
 .55 
 .25 
 .05 
 
 .28 
 .50 
 .38 
 .35 
 
 "\ T 2l" 
 
 0.03 
 ""."36" 
 ""."08" 
 
 """62" 
 .08 
 .42 
 .52 
 
 .20 
 .12 
 .21 
 .02 
 -.02 
 
 .48 
 .50 
 .35 
 .30 
 .16 
 
 .21 
 .08 
 .22 
 
 *-."6i" 
 
 -.01 
 -.02 
 
 .09 
 
 ""."is* 
 
 0.75 
 
 *2, 
 
 
 
 
 
 
 
 
 .31 
 
 3 
 
 0.04 
 
 n 
 
 .02 
 .04 
 .09 
 .05 
 .02 
 
 (a) 
 (a) 
 (a) 
 \a) 
 (a) 
 
 (a) 
 
 
 0.12 
 +.10 
 +.11 
 
 0.18 
 .38 
 
 .27 
 
 .32 
 
 
 
 0.19 
 .11 
 .08 
 
 .02 
 
 ***.*6i" 
 
 .02 
 
 .40 
 
 .19 
 
 -.02 
 
 ""."49" 
 
 -.03 
 
 .05 
 
 .05 
 
 .40 
 
 4 
 
 0.78 
 .73 
 
 "[a)" 
 
 .32 
 
 5 
 
 .14 
 
 6 
 
 .02 
 
 •?::::::::::::::. 
 
 (a) 
 (a) 
 
 («) 
 00 
 
 0.08 
 
 +.10 
 +.10 
 
 +.11 
 
 +.12 
 .15 
 .25 
 
 .50 
 
 .10 
 
 ►21 
 
 8 
 
 
 
 .42 
 
 9 
 
 .15 
 .15 
 
 .12 
 .36 
 .32 
 
 .18 
 
 .15 
 
 .42 
 
 ""'."22" 
 
 .12 
 
 +.10 
 
 .12 
 
 .38 
 .35 
 
 .21 
 
 .14 
 
 .19 
 
 .12 
 
 ""."24" 
 .11 
 .25 
 
 .23 
 .22 
 .21 
 
 
 
 .14 
 
 10 
 
 
 
 .03 
 
 11 
 
 
 
 
 -.11 
 
 12 
 
 
 
 
 -.05 
 .05 
 
 —.15 
 
 13 
 
 .10 
 
 +0.15 
 
 .60 
 
 -.15 
 
 14. 
 
 —.13 
 
 15 
 
 
 +.09 
 
 
 .05 
 -.08 
 
 .02 
 
 16 
 
 .28 
 
 17 
 
 («) 
 
 (a) 
 
 
 -.06 
 
 18 
 
 
 
 .11 
 
 -.01 
 -.04 
 -.05 
 
 -.01 
 
 .00 
 
 -.03 
 
 ^-.05 
 
 -.05 
 -.06 
 -.09 
 -.08 
 .15 
 
 .08 
 
 19 
 
 (a) 
 (a) 
 
 (o) 
 
 (a) 
 (a) 
 (a) 
 
 ( a ) 
 
 
 
 .23 
 
 20 
 
 
 
 
 .35 
 
 §1 
 
 
 (o) 
 
 .15 
 
 "-."io" 
 
 .00 
 
 -.01 
 
 .04 
 
 .04 
 .02 
 
 .22 
 
 22 
 
 .40 
 
 23 
 
 (a) 
 
 
 .10 
 .08 
 
 .01 
 
 .82 
 
 24 
 
 .30 
 
 25 
 
 
 .11 
 
 .11 
 
 +.01 
 
 +.09 
 
 +.15 
 
 .32 
 
 .51 
 
 .35 
 
 .41 
 
 .32 
 
 +.09 
 
 (0) 
 
 .09 
 
 .06 
 .11 
 .06 
 
 .06 
 
 26 
 
 
 
 .32 
 
 27 
 
 (a) 
 
 S 
 
 
 .12 
 
 28 
 
 .05 
 
 29 
 
 
 
 .10 
 
 30 
 
 
 
 
 
 
 
 31 
 
 
 (a) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 Monthly discharge at station No. 49 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 October... 
 November. 
 December. 
 
 1911. 
 
 January . . 
 February. 
 March.... 
 
 April 
 
 May 
 
 1912. 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 a 0.05 
 o.lO 
 o.lO 
 
 .003 
 .090 
 .110 
 .180 
 .120 
 
 Run-off 
 (total in 
 acre-feet). 
 
 5.95 
 6.15 
 
 .20 
 
 5.30 
 
 6.70 
 
 10.70 
 
 7.10 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year. 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 0.02 
 .04 
 .04 
 .12 
 .13 
 .13 
 .15 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.00 
 2.60 
 2.40 
 7.30 
 8.30 
 7.70 
 9.10 
 
 68.40 
 
 a Estimated. 
 
 Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
 Discharge measurements at station No. 50 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.J 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 23 
 
 Feet. 
 0.39 
 .35 
 1.31 
 
 Sec.-ft. 
 0.07 
 .04 
 3.00 
 
 Oct. 25 
 
 Feet. 
 0.46 
 .79 
 .40 
 
 Sec.-ft. 
 0.21 
 
 Sept. 28 
 
 Nov. 19 
 
 .45 
 
 Oct. 23 
 
 Dec. 10 1 
 
 .15 
 
 
 
 
 Note.— Bed of stream of sand and gravel; shifting slightly. One channel at all stages. 
 
ISLAND OF HAW AH. 
 
 299 
 
 Daily gage height, in feet, at station No. 50 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Billkov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.41 
 .40 
 .36 
 .35 
 .32 
 
 .32 
 .34 
 .39 
 .34 
 .34 
 
 .32 
 .31 
 .31 
 .30 
 
 .29 
 
 .29 
 .29 
 .25 
 .25 
 .25 
 
 .25 
 .25 
 .25 
 .25 
 .25 
 
 .26 
 .30 
 .29 
 .25 
 .24 
 .24 
 
 0.24 
 
 "*\*24* 
 .24 
 
 .24 
 
 .24 
 .22 
 .22 
 .21 
 .21 
 
 .21 
 .23 
 .41 
 .33 
 .26 
 
 .24 
 .22 
 .21 
 .35 
 
 .72 
 
 1.15 
 1.55 
 1.68 
 1.31 
 1.20 
 
 .85 
 .80 
 .90 
 .80 
 
 0.85 
 .81 
 .72 
 .52 
 .45 
 
 .45 
 .52 
 .72 
 .82 
 .73 
 
 .98 
 1.02 
 
 .98 
 1.05 
 
 .78 
 
 .61 
 1.06 
 1.51 
 1.30 
 
 .70 
 
 .67 
 .44 
 .78 
 .54 
 .44 
 
 .44 
 .40 
 .35 
 .34 
 .71 
 .98 
 
 0.50 
 .52 
 .59 
 .89 
 .76 
 
 .96 
 1.70 
 1.34 
 1.02 
 
 .93 
 
 .84 
 .79 
 .71 
 .54 
 
 .81 
 
 .61 
 .88 
 .90 
 .78 
 .91 
 
 .88 
 .75 
 .71 
 .69 
 .92 
 
 .96 
 .72 
 .60 
 .58 
 .54 
 
 0.69 
 .74 
 .79 
 
 1.02 
 .94 
 
 .72 
 .65 
 
 "*\*62* 
 .60 
 
 .59 
 
 "*."59" 
 
 """."69" 
 
 *""."60" 
 .58 
 .55 
 .58 
 
 .55 
 .52 
 .46 
 .44 
 .42 
 
 .43 
 
 .44 
 .42 
 .42 
 .45 
 
 .42 
 
 0.45 
 ,42 
 
 """."38" 
 .38 
 
 .38 
 .38 
 .44 
 • 44 
 
 '"".*49" 
 .48 
 .45 
 
 .51 
 
 .46 
 
 ....... 
 
 .40 
 
 .40 
 
 .48 
 
 ....... 
 
 .69 
 .82 
 .66 
 .60 
 .55 
 
 0.65 
 
 .69 
 
 2.00 
 
 .82 
 .60 
 
 .60 
 .54 
 .53 
 .52 
 
 .81 
 
 1.01 
 
 .74 
 .60 
 .79 
 .53 
 
 .50 
 .51 
 .52 
 .48 
 .48 
 
 .48 
 .46 
 .58 
 .80 
 .67 
 
 .64 
 .59 
 .52 
 .61 
 .58 
 .50 
 
 0.47 
 .40 
 
 1.15 
 .67 
 .46 
 
 .41 
 .61 
 
 .41 
 .72 
 .68 
 
 .56 
 .49 
 .68 
 .70 
 .81 
 
 .65 
 .46 
 .74 
 .76 
 .65 
 
 .51 
 .39 
 .39 
 .51 
 .36 
 
 .64 
 .79 
 .79 
 .72 
 .95 
 .90 
 
 1.05 
 .92 
 1.35 
 1.52 
 .80 
 
 .67 
 1.01 
 .46 
 .51 
 .44 
 
 .39 
 .88 
 .59 
 .58 
 .46 
 
 .72 
 .49 
 .51 
 .36 
 
 .48 
 
 .60 
 .62 
 .50 
 .41 
 .39 
 
 .38 
 .36 
 .34 
 .54 
 .96 
 
 0.78 
 .76 
 .75 
 .72 
 
 .72 
 
 .70 
 .71 
 .71 
 .75 
 .79 
 
 .78 
 .78 
 .74 
 .86 
 .90 
 
 .92 
 
 1.08 
 
 .78 
 
 .82 
 
 1.18 
 
 .76 
 
 1.60 
 
 1.19 
 
 .92 
 
 .68 
 
 1.05 
 1.59 
 1.36 
 1.22 
 1.01 
 .98 
 
 0.82 
 .84 
 
 1.28 
 .78 
 .76 
 
 .60 
 
 .53 
 
 .65 
 
 1.28 
 
 1.49 
 
 1.00 
 .79 
 .76 
 .60 
 
 .48 
 
 1.09 
 
 1.25 
 1.12 
 1.00 
 .80 
 
 .76 
 .80 
 .98 
 .90 
 .72 
 
 .60 
 .88 
 .86 
 .79 
 
 .88 
 
 1.42 
 
 2 
 
 1.22 
 
 3 
 
 1.39 
 
 4 
 
 .76 
 
 5 
 
 .52 
 
 6 
 
 .44 
 
 7 
 
 .43 
 
 8 
 
 .44 
 
 9 
 
 .44 
 
 10 
 
 .40 
 
 11 
 
 .38 
 
 12 
 
 .35 
 
 13 
 
 .35 
 
 14 
 
 .35 
 
 15 
 
 .34 
 
 16 
 
 .46 
 
 17 
 
 .34 
 
 18 
 
 .32 
 
 19 
 
 .45 
 
 20 
 
 .66 
 
 21 
 
 ^42 
 
 22 
 
 .73 
 
 23 
 
 1.34 
 
 24 
 
 .96 
 
 25 
 
 .43 
 
 26 
 
 .59 
 
 27 
 
 .40 
 
 28 
 
 .25 
 
 29 
 
 .28 
 
 30 
 
 
 31 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 50 at 
 
 for 1911. 
 
 \700-foot level, near Hilo, Hawaii, 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.46 
 
 .22 
 
 1.70 
 
 2.78 
 
 .56 
 
 .53 
 .92 
 .77 
 .65 
 .50 
 
 .30 
 .18 
 .18 
 .10 
 .46 
 
 0.05 
 .05. 
 .13 
 d8 
 
 . -14 
 
 .34 
 .28 
 .28 
 .34 
 .16 
 
 .14 
 .13 
 .42 
 .24 
 .80 
 
 0.10 
 .10 
 .05 
 .05 
 .10 
 
 .10 
 .10 
 .10 
 .30 
 .15 
 
 .14 
 .12 
 .80 
 .56 
 3.50 
 
 16 
 
 0.62 
 .38 
 
 1.00 
 .46 
 .34 
 
 .24 
 1.45 
 
 .84 
 1.25 
 
 .53 
 
 .84 
 .65 
 .88 
 .34 
 .80 
 
 0.18 
 .46 
 .21 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 0.24 
 .68 
 .32 
 
 1.12 
 .28 
 
 2.96 
 3.38 
 3.80 
 2.60 
 
 .88 
 
 .18 
 .14 
 .16 
 .15 
 .10 
 
 1 82 
 
 2 
 
 
 17 
 
 1 40 
 
 3 
 
 
 18 . 
 
 1 20 
 
 4 
 
 
 19 
 
 1 20 
 
 5 
 
 
 20 
 
 1 12 
 
 6 
 
 
 21 
 
 .15 
 
 7 
 
 
 22 
 
 12 
 
 8 
 
 
 23 
 
 05 
 
 9 
 
 
 24 
 
 05 
 
 10 
 
 
 25 
 
 22 
 
 11 
 
 
 26 
 
 .05 
 
 12 
 
 
 27 
 
 .21 
 
 13 
 
 0.46 
 
 .46 
 
 1.04 
 
 28 
 
 10 
 
 14 
 
 29 
 
 .14 
 
 15 
 
 30 
 
 .05 
 
 
 31 
 
 .05 
 
 
 
 
 
300 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 50 at 2,700-foot level, near Eilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dee. 
 
 1 
 
 0.05 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .30 
 
 2.00 
 4.40 
 5.20 
 3.00 
 2.30 
 
 .65 
 .50 
 .80 
 .50 
 
 0.65 
 .50 
 .30 
 .10 
 .05 
 
 .05 
 .10 
 .30 
 .60 
 .40 
 
 1.10 
 1.30 
 1.10 
 1.40 
 .50 
 
 .15 
 1.50 
 4.20 
 2.90 
 
 .30 
 
 .25 
 .05 
 .50 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .30 
 1.10 
 
 0.10 
 .10 
 .15 
 .80 
 .40 
 
 1.00 
 5.30 
 3.10 
 1.30 
 .90 
 
 .60 
 .50 
 .30 
 .10 
 .50 
 
 .15 
 .70 
 .80 
 .50 
 .80 
 
 .70 
 .40 
 .30 
 .30 
 .90 
 
 1.00 
 .30 
 .15 
 .15 
 .10 
 
 0.30 
 .40 
 .50 
 
 1.30 
 .95 
 
 .30 
 .20 
 .20 
 .20 
 .15 
 
 .15 
 .15 
 .15 
 .20 
 .30 
 
 .20 
 .15 
 .15 
 .10 
 .15 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 -.05 
 .05 
 .05 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .10 
 .20 
 .20 
 .30 
 
 .30 
 .60 
 .20 
 .15 
 .10 
 
 0.20 
 .30 
 
 7.10 
 .60 
 .15 
 
 .15 
 .10 
 .10 
 .10 
 .50 
 
 1.25 
 .40 
 .15 
 .50 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .15 
 .50 
 .25 
 
 .20 
 .15 
 .10 
 .15 
 .15 
 .10 
 
 0.10 
 .05 
 
 2.00 
 .25 
 .10 
 
 .05 
 .15 
 .05 
 .30 
 .30 
 
 .10 
 .10 
 .30 
 .30 
 .50 
 
 .20 
 .10 
 .40 
 .40 
 .20 
 
 .10 
 .05 
 .05 
 .10 
 .05 
 
 .20 
 .50 
 .50 
 .30 
 1.00 
 .80 
 
 1.40 
 
 .90 
 
 3.20 
 
 4.20 
 
 .50 
 
 .25 
 1.25 
 .10 
 .10 
 .05 
 
 .05 
 .70 
 .15 
 .15 
 .10 
 
 .30 
 .10 
 .10 
 .05 
 .10 
 
 .15 
 .20 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 1.00 
 
 0.50 
 .40 
 .40 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .40 
 .50 
 
 .50 
 .50 
 .40 
 .70 
 .80 
 
 .90 
 
 1.60 
 
 .50 
 
 .60 
 
 2.20 
 
 .40 
 
 4.70 
 
 2.20 
 
 .90 
 
 .30 
 
 1.45 
 4.60 
 3.30 
 2.40 
 1.25 
 1.10 
 
 0.60 
 .60 
 
 2.80 
 .50 
 .40 
 
 .15 
 
 .10 
 
 .20 
 
 2.80 
 
 4.00 
 
 1.20 
 .50 
 .40 
 .15 
 .10 
 
 1.65 
 2.60 
 1.80 
 1.20 
 .50 
 
 .40 
 .50 
 1.10 
 .80 
 .30 
 
 .15 
 .70 
 .70 
 .50 
 .70 
 
 3.60 
 
 2 
 
 2.40 
 
 3 
 
 3.40 
 
 4 
 
 .40 
 
 5 
 
 .10 
 
 6 
 
 
 .05 
 
 7 
 
 
 .05 
 
 8 
 
 .05 
 
 .05 
 
 9 
 
 .05 
 
 10 
 
 
 .05 
 
 11 
 
 
 .05 
 
 12 
 
 
 .05 
 
 13 
 
 
 .05 
 
 li. 
 
 
 .10 
 
 15 
 
 
 ,20 
 
 16 
 
 
 .10 
 
 17 
 
 
 .10 
 
 18 
 
 
 .10 
 
 19 
 
 
 .10 
 
 20 
 
 
 .20 
 
 21 
 
 
 .05 
 
 22 
 
 
 .40 
 
 23 
 
 
 3.10 
 
 24 
 
 
 1.00 
 
 25 
 
 
 .05 
 
 26 
 
 
 .15 
 
 27 
 
 
 .05 
 
 28 
 
 
 .05 
 
 29 
 
 
 .05 
 
 30 
 
 
 .05 
 
 31 
 
 
 
 .05 
 
 
 
 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near this station . 
 
 Monthly discharge at station No. 50 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 September 13-30. 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 0.70 
 .40 
 
 .45 
 
 .05 
 .71 
 .65 
 .75 
 
 Run-off 
 (total in 
 acre-feet). 
 
 24.60 
 41.20 
 28.00 
 
 3.07 
 40.80 
 40.00 
 44.60 
 
 Month. 
 
 1912— Continued 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 0.22 
 .12 
 .46 
 .31 
 .52 
 
 1.13 
 .94 
 .52 
 
 .53 
 
 13.50 
 7.14 
 28.30 
 19.10 
 30.90 
 69.50 
 55.90 
 32.00 
 
 385.00 
 
 Discharge measurements at station No. 51 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20.. 
 
 Feet. 
 0.84 
 .74 
 .79 
 
 Sec.-ft. 
 0.09 
 .02 
 .13 
 
 Nov. 19... 
 
 Feet. 
 0.90 
 
 .80 
 
 Sec.-ft. 
 0.44 
 
 Sept.28 
 
 Dec. 10... 
 
 .20 
 
 Nov. 7 
 
 
 
 
 
 Note.— Bed of stream of silt, sand, and gravel; probably shifting. One channel at all stages. 
 
ISLAND OF HAWAII. 
 
 301 
 
 Daily gage height, in feet, at station No. 51 at 2,700-foot level, near Hilo, Hawaii, for 1912, 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.79 
 
 0.85 
 .93 
 
 
 
 0.82 
 
 
 
 2 
 
 
 
 1.02 
 
 .85 
 .84 
 .80 
 
 .79 
 
 .85 
 
 
 
 0.80 
 
 1.65 
 
 1.14 
 
 .93 
 
 "\*90" 
 .84 
 .95 
 .90 
 
 ""."86* 
 
 *"*9o" 
 1.01 
 
 
 
 
 3 
 
 
 
 1.30 
 1.29 
 1.11 
 
 1.01 
 
 
 
 1.60 
 
 ""."96" 
 
 .98 
 1.05 
 
 .88 
 .86 
 
 .80 
 .90 
 
 .88 
 .90 
 .82 
 
 .89 
 .84 
 .80 
 .80 
 
 ""."so" 
 
 .78 
 
 .76 
 
 .74 
 .74 
 
 ""79" 
 
 .76 
 .80 
 .79 
 
 .88 
 
 .80 
 
 1.12 
 
 .90 
 
 .92 
 
 1.10 
 
 "i.'os" 
 
 1.37 
 1.04 
 
 .84 
 
 .95 
 1.66 
 1.16 
 1.33 
 1.11 
 
 1.36 
 
 
 4 
 
 
 0.69 
 .68 
 
 "\*68" 
 .68 
 .68 
 
 .68 
 
 .66 
 
 1.05 
 
 .82 
 
 .71 
 .70 
 
 
 
 
 
 5 
 
 0.80 
 
 .81 
 .80 
 .80 
 
 1.05 
 
 .78 
 
 .95 
 
 .97 
 .90 
 
 ""."82* 
 
 .88 
 
 "".*80" 
 .81 
 1.06 
 1.60 
 
 1.01 
 .90 
 .92 
 .82 
 .80 
 
 1.20 
 
 1.32 
 
 .98 
 
 .98 
 
 .86 
 
 .87 
 
 .84 
 
 1.00 
 
 "*.*80" 
 
 .80 
 .80 
 .96 
 .87 
 .80 
 
 0.80 
 
 6 
 
 7 
 
 .78 
 .80 
 
 8 
 
 
 
 .77 
 
 .85 
 
 9... 
 
 .9i 
 
 .92 
 
 1.40 
 1.35 
 
 1.48 
 1.44 
 
 1.52 
 1.12 
 
 1.05 
 
 1.02 
 
 .99 
 
 .90 
 
 
 .80 
 
 10 
 
 
 .79 
 *"\*79" 
 
 
 .80 
 
 11 
 
 .75 
 .75 
 .74 
 
 .74 
 
 .74 
 
 
 
 1.16 
 
 .78 
 
 12 
 
 .75 
 
 13 
 
 
 .90 
 1.00 
 
 .72 
 
 14 
 
 
 .78 
 
 .75 
 
 
 .80 
 
 16 
 
 .78 
 
 .85 
 
 
 .91 
 
 17 
 
 1.12 
 1.47 
 1.02 
 1.21 
 
 .86 
 .80 
 
 .88 
 
 "*".*90" 
 
 .89 
 .83 
 .82 
 .79 
 .89 
 1.70 
 
 
 .83 
 
 .82 
 
 .77 
 
 
 
 .90 
 .95 
 .91 
 
 .93 
 1.01 
 
 .96 
 1.05 
 
 .73 
 
 
 .80 
 
 19, 
 
 .74 
 
 .74 
 
 .72 
 .72 
 .71 
 .71 
 .70 
 
 .70 
 .72 
 .70 
 .70 
 .69 
 
 """."90" 
 
 .88 
 
 
 .82 
 .81 
 
 .91 
 
 .90 
 
 20. 
 
 
 .81 
 
 1.03 
 
 
 .80 
 
 .80 
 .80 
 .79 
 .78 
 
 .75 
 .74 
 .74 
 .74 
 
 .84 
 
 22 
 
 .79 
 
 
 
 1.09 
 
 23 
 
 
 
 .80 
 .84 
 .79 
 
 .79 
 
 .87 
 
 1.56 
 
 24 
 
 .86 
 
 
 
 1.20 
 
 25 
 
 
 .89 
 
 .89 
 .85 
 .82 
 .87 
 .82 
 .80 
 
 .86 
 
 26 
 
 1.19 
 .99 
 .95 
 
 .79 
 "\*79* 
 
 .81 
 1.01 
 .91 
 
 1.18 
 
 27... 
 
 
 28 
 
 .82 
 
 29 
 
 30 
 
 .83 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Monthly discharge at station No. SI at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 September. 
 
 October 
 
 November. 
 December. 
 
 1911. 
 
 January.. 
 February. 
 
 March 
 
 April 
 
 1912. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.40 
 a. 50 
 a. 50 
 
 .10 
 .14 
 .71 
 
 .71 
 
 Run-off 
 (total in 
 acre-feet). 
 
 24.60 
 29.80 
 
 6.20 
 8.10 
 43.60 
 42.50 
 
 Month. 
 
 1912— Continued. 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November. 
 
 December 
 
 The year. 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 0.29 
 .23 
 .33 
 .35 
 .43 
 .56 
 .54 
 .46 
 
 40 
 
 Run-off 
 (total in 
 acre-feet). 
 
 17.60 
 12.10 
 20.20 
 21.60 
 25.40 
 34.50 
 32.00 
 28.00 
 
 292.00 
 
 a Estimated. 
 
 Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
 fall record at camp near station No. 50. 
 
 Discharge measurements at station No. 52 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 0.76 
 .34 
 
 Sec.-ft. 
 9.13 
 2.84 
 
 Nov. 19... ........ 
 
 Feet. 
 1.58 
 1.10 
 
 Sec.-ft. 
 49.3 
 
 Sept. 28 
 
 Dec. 10... 
 
 20.4 
 
 
 
 
 Note. — Bed of stream of cobbles and some large bowlders. Section at gage is quite rough. Station : 
 probably permanent. One channel at all staees. 
 
302 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 52 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.42 
 
 1.00 
 1.11 
 
 
 
 
 
 
 2 
 
 
 
 1.46 
 1.18 
 .91 
 
 .82 
 
 .68 
 .82 
 
 
 
 0.40 
 2.08 
 1.29 
 
 .84 
 
 ""'."64" 
 .59 
 .62 
 
 .64 
 
 ""."61" 
 
 "".'si* 
 
 1.12 
 
 "3."90" 
 
 "i.*9i' 
 
 1.72 
 
 2.38 
 1.45 
 1.35 
 
 1.00 
 1.52 
 1.29 
 1.10 
 .98 
 
 .96 
 .87 
 .81 
 .69 
 
 0.71 
 
 ""."TO" 
 .60 
 
 .58 
 .46 
 .46 
 
 "*".*64" 
 
 .57 
 1.30 
 
 .82 
 1.01 
 
 1.08 
 2.71 
 1.34 
 1.78 
 2.11 
 
 '*2.*i2* 
 
 3.14 
 2.16 
 1.55 
 
 1.41 
 3.76 
 2.70 
 2.59 
 2.16 
 
 
 
 3 
 
 
 
 1.43 
 1.49 
 1.76 
 
 1 81 
 
 
 
 3.42 
 
 
 4 
 
 
 -0.20 
 
 - .22 
 
 -*.*7o" 
 
 - .70 
 
 - .71 
 
 - .72 
 
 - .75 
 .56 
 .52 
 .22 
 
 
 
 
 
 5 
 
 0.60 
 
 .60 
 .61 
 .62 
 
 2.10 
 
 .23 
 
 1.12 
 
 1.11 
 1.08 
 
 '"."82" 
 
 1.84 
 
 ""i.*i2" 
 
 1 13 
 
 1.88 
 4.16 
 
 2.57 
 1.91 
 1.73 
 1.35 
 1.13 
 
 1.84 
 2.85 
 1.80 
 2.26 
 1.60 
 
 1.44 
 1.42 
 1.56 
 
 " "i"i5 
 
 6 
 
 1 10 
 
 7 
 
 1.30 
 
 8... 
 
 
 
 .66 
 
 1.70 
 
 9 
 
 .91 
 .96 
 
 1.22 
 1.98 
 2.06 
 2.22 
 
 3.36 
 2.15 
 
 2.35 
 1.58 
 1.39 
 1.18 
 1.23 
 
 
 1.35 
 
 10 
 
 
 1.40 
 
 
 1.11 
 
 11 
 
 .42 
 .42 
 .41 
 .41 
 .38 
 
 .30 
 
 
 2.28 
 
 95 
 
 12 
 
 1.28 
 
 
 .87 
 
 13 
 
 
 1.19 
 1.74 
 
 .78 
 
 14 
 
 
 .42 
 
 .85 
 
 15 
 
 .94 
 
 16 . 
 
 .86 
 
 .40 
 
 
 1.22 
 
 17 
 
 .05 
 
 1.96 
 2.25 
 1.16 
 1.95 
 
 1.11 
 1.08 
 1.12 
 
 
 .84 
 
 .64 
 
 .99 
 
 18 
 
 
 1.40 
 1.35 
 1.37 
 
 1.33 
 1.49 
 1.52 
 2.10 
 
 .60 
 
 
 .81 
 
 19 
 
 .15 
 .12 
 
 .11 
 .10 
 .09 
 .09 
 .08 
 
 .08 
 ' .08 
 .06 
 .05 
 .06 
 
 
 
 .78 
 .78 
 
 .95 
 
 1.30 
 
 20.... 
 
 
 .80 
 
 2.15 
 
 21 
 
 .60 
 
 .60 
 .60 
 .54 
 .49 
 
 .40 
 .36 
 .34 
 .31 
 
 1.28 
 
 22 
 
 .48 
 
 
 
 2.45 
 
 23 
 
 
 
 .49 
 
 .78 
 .64 
 
 .51 
 1.20 
 
 3.81 
 
 24 
 
 .90 
 
 
 
 
 25 
 
 1.60 
 1.21 
 
 .96 
 
 .86 
 .78 
 .64 
 .54 
 .62 
 2.80 
 
 
 .79 
 
 .69 
 .75 
 .69 
 .63 
 .54 
 .49 
 
 1.12 
 
 1.06 
 .97 
 1.11 
 1.33 
 .98 
 
 1180 
 
 26 
 
 1.96 
 1.98 
 1.91 
 
 .60 
 
 1.41 
 1.50 
 1.41 
 
 2.68 
 
 27 
 
 
 28 
 
 1.35 
 
 29 
 
 1.2S 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 52 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day, 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1... . 
 
 78.0 
 76.2 
 68.1 
 173.0 
 128.0 
 
 92.4 
 64.5 
 62.7 
 60.9 
 45.6 
 
 6.8 
 11.0 
 16.4 
 24.0 
 34.0 
 
 47.2 
 93.5 
 58.4 
 42.6 
 30.5 
 
 12.8 
 11.3 
 10.7 
 6.4 
 6.6 
 
 6.6 
 6.4 
 10.7 
 14.3 
 10.7 
 
 11... . 
 
 35.2 
 27.0 
 19.8 
 14.3 
 14.3 
 
 14.0 
 14.0 
 13.7 
 13.7 
 11.6 
 
 21.0 
 14.3 
 23.0 
 20.6 
 24.0 
 
 27.0 
 37.0 
 50.4 
 70.8 
 93.5 
 
 9.7 
 
 56.0 
 
 164.0 
 
 354.0 
 
 623.0 
 
 111.0 
 132.0 
 118.0 
 139.0 
 139.0 
 
 21 
 
 9.4 
 8.4 
 7.6 
 6.8 
 6.1 
 
 5.6 
 5.1 
 4.8 
 4.5 
 4.3 
 _\0 
 
 528.0 
 337.0 
 365.0 
 314.6 
 88.0 
 
 44.0 
 22.0 
 17.8 
 17.0 
 14.0 
 
 55.2 
 
 2.. . 
 
 12... . 
 
 22 
 
 17.0 
 
 3 
 
 13 
 
 23 
 
 15.5 
 
 4 
 
 14 
 
 15 
 
 24 
 
 55.2 
 
 5.... 
 
 25 
 
 40.5 
 
 6 
 
 16 
 
 26 
 
 37.0 
 
 7 
 
 17 
 
 27 
 
 21.0 
 
 8..... 
 
 18 
 
 28 
 
 37.0 
 
 9 
 
 19 
 
 29 
 
 40.5 
 
 10...., -.. 
 
 20 
 
 30 
 
 37.0 
 
 
 
 31 
 
 31.0 
 
ISLAND OF HAWAII. 
 
 30a 
 
 Daily discharge, in second-feet, at station No. 52 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 6.00 
 6.00 
 6.00 
 6.00 
 6.40 
 
 6.40 
 6.60 
 6.80 
 5.80 
 4.80 
 
 3.80 
 3.80 
 3.60 
 3.60 
 3.30 
 
 2.50 
 2.00 
 2.00 
 1.40 
 1.20 
 
 1.20 
 1.10 
 1.10 
 1.10 
 1.00 
 
 1.00 
 1.00 
 .90 
 .90 
 .90 
 .90 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 
 .10 
 
 5.80 
 
 5.10 
 
 1.90 
 
 1.40 
 .90 
 .50 
 .30 
 
 2.00 
 
 250.00 
 400.00 
 500.00 
 300.00 
 52.00 
 
 26.00 
 20.00 
 20.00 
 20.00 
 
 30.00 
 41.00 
 25.00 
 14.00 
 12.00 
 
 8.00 
 12.00 
 13.00 
 14.00 
 16.00 
 
 27.00 
 86.00 
 95.00 
 114.00 
 104.00 
 
 94.00 
 84.00 
 118. 00 
 24.00 
 83.00 
 
 21.00 
 20.00 
 22.00 
 19.00 
 16.00 
 
 13.00 
 
 10.00 
 
 7.20 
 
 5.40 
 
 6.80 
 
 211.00 
 
 100.00 
 50.00 
 39.00 
 43.00 
 65.00 
 
 70.00 
 500.00 
 400.00 
 333.00 
 105.00 
 
 132.00 
 50.00 
 36.00 
 25.00 
 27.00 
 
 30.00 
 34.00 
 37.00 
 34.00 
 35.00 
 
 32.00 
 41.00 
 45.00 
 21.00 
 50.00 
 
 84.00 
 86.00 
 79.00 
 40.00 
 50.00 
 
 50.00 
 60.00 
 60.00 
 80.00 
 99.00 
 
 80.00 
 50.00 
 40.00 
 40.00 
 37.00 
 
 34.00 
 30.00 
 25.00 
 20.00 
 15.00 
 
 12.00 
 9.20 
 6.40 
 6.00 
 5.50 
 
 5.00 
 4.50 
 9.20 
 14.00 
 10.20 
 
 6.40 
 6.20 
 6.10 
 5.00 
 4.00 
 4.00 
 
 3.80 
 3.00 
 2.50 
 2.50 
 2.00 
 
 1.90 
 4.80 
 7.60 
 7.00 
 6.40 
 
 5.70 
 
 5.00 
 4.40 
 3.80 
 3.60 
 
 3.50 
 5.00 
 7.00 
 9.00 
 11.00 
 
 15.00 
 19.00 
 24.00 
 29.00 
 33.00 
 
 37.00 
 44.00 
 37.00 
 30.00 
 24.00 
 
 17.00 
 21.00 
 90.00 
 50.00 
 22.00 
 
 21.00 
 20.00 
 16.00 
 12.00 
 10.00 
 
 120.00 
 60.00 
 25.00 
 63.00 
 40.00 
 
 20.00 
 12.00 
 11.00 
 10.00 
 10.00 
 
 10.00 
 10.00 
 10.00 
 10.00 
 10.00 
 
 8.20 
 9.90 
 8.20 
 7.00 
 5.40 
 4.70 
 
 4.10 
 
 3.50 
 
 96.00 
 
 30.00 
 
 12.00 
 
 9.50 
 7.00 
 6.20 
 6.80 
 7.00 
 
 6.80 
 6.60 
 8^0 
 11.00 
 22.00 
 
 7.00 
 
 7.00 
 
 11.00 
 
 15.00 
 
 10.00 
 
 6.40 
 5.60 
 4.70 
 10.00 
 7.00 
 
 4.95 
 26.00 
 20.00 
 15.00 
 10.00 
 15.00 
 
 200.00 
 250.00 
 463. 00 
 540.00 
 79.00 
 
 61.00 
 136.00 
 40.00 
 34.00 
 26.00 
 
 17.00 
 45.00 
 30.00 
 21.00 
 16.00 
 
 15.00 
 13.00 
 11.00 
 8.20 
 7.20 
 
 6.40 
 6.40 
 5.40 
 4.70 
 4.10 
 
 3.50 
 3.10 
 2.90 
 2.50 
 4.00 
 
 6.00 
 8.70 
 8.60 
 8.40 
 6.40 
 
 6.10 
 4.30 
 4.30 
 5.60 
 7.00 
 
 5.90 
 31.00 
 12.00 
 17.00 
 18.00 
 
 20.00 
 193.00 
 35.00 
 10.50 
 22.00 
 
 22.00 
 22.00 
 283.00 
 106.00 
 48.00 
 
 38.00 
 424.00 
 191.00 
 171.00 
 106.00 
 100.00 
 
 250.00 
 200.00 
 346.00 
 100.00 
 72.00 
 
 50.00 
 22.00 
 22.00 
 76.00 
 531.00 
 
 167.00 
 79.00 
 62.00 
 34.00 
 22.00 
 
 72.00 
 221.00 
 
 69.00 
 119.00 
 
 52.00 
 
 39.00 
 38.00 
 48.00 
 35.00 
 22.00 
 
 19.00 
 16.00 
 21.00 
 32.00 
 16.00 
 
 150.00 
 
 2 
 
 200.00 
 
 3 
 
 70.00 
 
 4 
 
 40.00 
 
 5 
 
 23.00 
 
 6 
 
 21.00 
 
 7 
 
 31.00 
 
 8 
 
 60.00 
 
 9 
 
 34.00 
 
 10 
 
 21.00 
 
 11 
 
 15.00 
 
 12 
 
 13.00 
 
 13 
 
 10.00 
 
 14 
 
 13.00 
 
 15 
 
 15.00 
 
 16 
 
 27.00 
 
 17 
 
 17.00 
 
 18 
 
 11.00 
 
 19 
 
 31.00 
 
 20 
 
 105.00 
 
 21 
 
 30.00 
 
 22 
 
 147.00 
 
 23 
 
 440.00 
 
 24 
 
 200.00 
 
 25 
 
 69.00 
 
 26 
 
 187.00 
 
 27 
 
 100.00 
 
 28 
 
 34.00 
 
 29 
 
 30.00 
 
 30 
 
 20.00 
 
 31 
 
 10.00 
 
 
 
 Note. 
 tiarge fc 
 rainfall at the camp near station No. 50. 
 
 -Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 
 Monthly discharge at station No. 52 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 discharge 
 in second- 
 feet. 
 
 35.30 
 83.10 
 75.10 
 
 3.20 
 55.40 
 40.80 
 89.10 
 26.90 
 
 Run-off 
 (total in 
 acre-feet). 
 
 2,180 
 4,940 
 4,630 
 
 197 
 3,190 
 2,510 
 5,300 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 13.00 
 24.00 
 13.30 
 68.50 
 62.60 
 95.10 
 70.10 
 
 46.60 
 
 774 
 1,480 
 
 818 
 4,080 
 3,850 
 5,660 
 4,310 
 
304 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements at station No. S3 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 0.47 
 .38 
 
 Sec.-ft. 
 
 0.01 
 
 
 
 Nov. 7 
 
 Feet. 
 0.47 
 
 .48 
 
 Sec.-ft. 
 0.04 
 
 Sept .28 
 
 Dec. 11 
 
 .03 
 
 
 
 
 Note.— Bed of stream of sand and gravel; shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. S3 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.20 
 
 0.48 
 .53 
 
 
 
 
 
 
 2 
 
 
 
 0.52 
 .51 
 .41 
 .45 
 
 .42 
 .46 
 
 
 
 0.40 
 .99 
 .59 
 .54 
 
 ""."53" 
 .48 
 .50 
 .52 
 
 ""\*49* 
 
 ""."52" 
 
 .64 
 
 
 0.44 
 
 
 
 3 
 
 
 
 6.59 
 .82 
 .61 
 
 .66 
 
 
 
 
 
 4 
 
 
 If 
 
 (o) 
 (a) 
 0.55 
 .45 
 .40 
 
 .40 
 .40 
 
 
 
 
 "a si" 
 
 .53 
 .59 
 
 .48 
 .45 
 
 .50 
 .52 
 .50 
 .50 
 .44 
 
 .48 
 .45 
 .44 
 .41 
 
 .44 
 .42 
 
 .41 
 .40 
 .40 
 
 "\*43* 
 
 .41 
 .48 
 .43 
 .49 
 
 .43 
 
 "*\*50* 
 .54 
 .69 
 
 ....... 
 
 "*"."52" 
 .50 
 
 .54 
 "\"66* 
 
 
 
 5 
 
 0.44 
 
 .44 
 .44 
 .45 
 
 1.61 
 
 .21 
 
 .58 
 
 .51 
 .50 
 
 **\*50" 
 
 0.52 
 
 ""."44' 
 .46 
 .64 
 
 "756* 
 .55 
 .50 
 
 .48 
 
 .81 
 .92 
 .70 
 .69 
 .60 
 
 .55 
 .58 
 .64 
 
 ""."52" 
 
 .52 
 .52 
 .64 
 .61 
 .54 
 
 0.60 
 
 6 
 
 .53 
 
 7 
 
 .55 
 
 8 
 
 
 
 .30 
 
 .61 
 
 9 
 
 .56 
 .52 
 
 .79 
 1.30 
 .90 
 .99 
 
 
 
 .60 
 
 10 '.. 
 
 
 .62 
 
 .61 
 .60 
 .58 
 .50 
 .54 
 
 .56 
 
 
 .52 
 
 11 
 
 .40 
 .40 
 .38 
 .38 
 .35 
 
 .35 
 
 
 .70 
 
 .48 
 
 12 
 
 .55 
 
 
 .45 
 
 13 
 
 
 .50 
 .61 
 
 .40 
 
 14 
 
 
 .34 
 
 .41 
 
 15 
 
 .46 
 
 16 
 
 .41 
 
 .35 
 
 
 .56 
 
 17 
 
 .66 
 
 .98 
 
 .. .76 
 
 
 .78 
 
 .44 
 
 .43 
 
 18 
 
 
 .56 
 .60 
 .54 
 
 .56 
 .64 
 .63 
 .64 
 
 .41 
 
 
 .47 
 
 19 . 
 
 (•) 
 
 (a) 
 
 (a) 
 («) 
 (") 
 («) 
 (a) 
 
 (o) 
 
 (°) 
 (a) 
 
 («) 
 (a) 
 
 
 
 .70 
 .74 
 
 .55 
 
 58 
 
 20 
 
 
 .74 
 
 .66 
 .64 
 .68 
 
 
 .31 
 
 .80 
 
 21 
 
 .42 
 
 42 
 .43 
 .41 
 .40 
 
 .40 
 .39 
 .38 
 .39 
 
 .54 
 
 22 
 
 .41 
 
 
 
 .88 
 
 23 
 
 
 
 .40 
 .40 
 .40 
 
 .39 
 .49 
 
 
 24 
 
 .43 
 
 
 
 .95 
 
 25 
 
 .63 
 .42 
 
 .55 
 
 .54 
 .49 
 .45 
 
 .49 
 
 
 .50 
 
 .50 
 .51 
 .47 
 .49 
 .45 
 .40 
 
 .56 
 
 26 
 
 .73 
 .73 
 .73 
 
 .38 
 "*\"30" 
 
 .58 
 .61 
 
 .58 
 
 .89 
 
 27 
 
 
 28 
 
 .50 
 
 29 
 
 .50 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. S3 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.05 
 .05 
 .05 
 .10 
 .10 
 
 .10 
 .15 
 .18 
 .13 
 .10 
 
 0.01 
 .01 
 .01 
 .01 
 .03 
 
 .03 
 .05 
 .05 
 .10 
 .05 
 
 11 
 
 0.10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 
 0.10 
 .05 
 .16 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .12 
 .14 
 
 0.05 
 .15 
 .30 
 .48 
 .62 
 
 . .42 
 .50 
 .42 
 .53 
 .53 
 
 21 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.13 
 .12 
 .12 
 .11 
 .11 
 
 .05 
 .05 
 .05 
 .05 
 .03 
 
 0.35 
 
 2 
 
 
 12 
 
 22 
 
 .15 
 
 3 . 
 
 0.35 
 .30 
 
 .26 
 
 .22 
 .18 
 .15 
 .12 
 .10 
 
 13 
 
 23 
 
 .15 
 
 4. 
 
 14 
 
 24 
 
 .35 
 
 5.. 
 
 15 
 
 25 
 
 .28 
 
 6 
 
 16 
 
 26 
 
 . 26 
 
 7.... 
 
 17 
 
 27 
 
 .23 
 
 8.... 
 
 18 
 
 28 
 
 .23 
 
 9 
 
 19 
 
 29 
 
 .28 
 
 10 
 
 20 
 
 30 
 
 .28 
 
 
 
 31 
 
 .28 
 
 
 
 
ISLAND OF HAWAII. 
 
 305 
 
 Daily discharge, in second-feet, at station No. 53 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 .05 
 
 .35 
 1.10 
 .50 
 .65 
 .40 
 
 .25 
 .15 
 .60 
 .30 
 .25 
 
 .15 
 .15 
 .20 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .25 
 
 0.15 
 .10 
 .10 
 .40 
 .10 
 
 .15 
 .35 
 .30 
 .20 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .10 
 .10 
 .10 
 .10 
 .05 
 
 .05 
 .15 
 .15 
 .15 
 .20 
 
 .25 
 .25 
 .25 
 .20 
 
 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 .20 
 .30 
 .20 
 .20 
 .25 
 
 .20 
 .10 
 .10 
 .20 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .10 
 .65 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .15 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .15 
 .10 
 .10 
 .05 
 .10 
 
 0.40 
 .50 
 1.00 
 1.30 
 .05 
 
 .05 
 .10 
 .10 
 .10 
 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 ""6*05* 
 
 .05 
 .20 
 
 "\*26" 
 
 """."65" 
 .05 
 
 .05 
 "\*"5" 
 
 0.05 
 .10 
 .20 
 .10 
 .05 
 
 .05 
 .05 
 .10 
 .15 
 .40 
 
 .20 
 .10 
 .05 
 .05 
 .05 
 
 .35 
 .60 
 .20 
 .20 
 .10 
 
 .05 
 .10 
 .15 
 .10 
 .05 
 
 .05 
 .05 
 .15 
 .10 
 .05 
 
 0.40 
 
 2 
 
 
 
 
 
 .90 
 
 3 
 
 
 
 
 
 ;20 
 
 4 
 
 
 
 
 
 .10 
 
 5 
 
 
 
 1.S5 
 
 
 .10 
 
 6 
 
 
 
 .10 
 
 7 
 
 
 
 
 
 .10 
 
 8 
 
 
 
 
 
 .10 
 
 9 
 
 
 
 
 
 .10 
 
 10 
 
 
 
 .05 
 
 
 .05 
 
 11 
 
 
 
 .05 
 
 12 
 
 
 
 .05 
 
 
 .05 
 
 13 
 
 
 
 .05 
 
 14 . 
 
 
 
 
 
 .05 
 
 15 
 
 
 
 
 
 .05 
 
 16. . . 
 
 
 
 
 
 .10 
 
 17 
 
 
 
 
 
 .05 
 
 
 
 
 
 
 .05 
 
 19 
 
 
 
 
 
 .10 
 
 
 
 
 
 
 .35 
 
 21 
 
 
 
 
 
 .05 
 
 22 
 
 
 
 
 
 45 
 
 23 
 
 
 
 
 
 1.50 
 
 24 
 
 
 
 
 
 .55 
 
 25 
 
 
 0.10 
 
 
 
 .10 
 
 26 
 
 
 
 0.05 
 .10 
 .05 
 
 .50 
 
 27 
 
 
 
 .30 
 
 28 
 
 
 
 .05 
 
 29 
 
 
 
 .05 
 
 30 
 
 
 
 
 
 .05 
 
 31 
 
 
 
 
 
 
 .05 
 
 
 
 
 
 
 
 
 
 
 
 Note.— Daily discharge determined from poorly denned rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
 near station No. 50. 
 
 Monthly discharge at station No. 53 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 3-31 
 
 November 
 
 December....... 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 discharge 
 in second- 
 feet. 
 
 0.10 
 .10 
 .23 
 
 .03 
 .05 
 .20 
 .15 
 .04 
 
 Run-off 
 (total in 
 acre-feet). 
 
 5.52 
 5.75 
 14.30 
 
 1.84 
 2.88 
 12.30 
 8.93 
 2.46 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.02 
 .10 
 .09 
 .16 
 .05 
 .13 
 .22 
 
 .10 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.19 
 6.15 
 5.53 
 9.52 
 3.07 
 7.74 
 13.50 
 
 75.10 
 
 Discharge measurements at station No. 54 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 DiS" 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 0.81 
 .67 
 
 Sec.JL 
 0.60 
 .09 
 
 Nov. 7... 
 
 Feet. 
 0.83 
 .83 
 
 Sec.-ft. 
 0.60 
 
 Sept. 28 
 
 Dec. 11 
 
 .75 
 
 
 
 
 Note. — Bed of stream of gravel and bedrock; only slightly shifting. One channel at all stages. 
 14694°— wsp 336—14 20 
 
306 WATEK RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 54 at 2,700-foot level, near Eilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.61 
 
 0.80 
 
 .88 
 
 
 
 
 
 
 2 
 
 
 
 0.92 
 .90 
 
 .82 
 .78 
 
 .75 
 .81 
 
 "".89 
 .85 
 
 1.04 
 1.10 
 1.29 
 
 
 
 0.66 
 
 1.70 
 
 .95 
 
 .84 
 
 "*.*82* 
 .75 
 .80 
 .88 
 
 *"\"80" 
 
 "\*85" 
 1.04 
 
 
 0.84 
 
 
 
 3 ...... 
 
 
 
 0.99 
 
 1.17 
 
 .98 
 
 .98 
 
 
 
 
 
 4 
 
 
 («) 
 <«> 
 
 & 
 
 0.86 
 .66 
 .60 
 
 
 
 
 "i."6i" 
 
 1.00 
 
 1.16 
 
 .91 
 
 .89 
 
 .80 
 .99 
 .91 
 .90 
 .81 
 
 .89 
 .84 
 .82 
 
 .77 
 
 .84 
 .80 
 
 .78 
 .75 
 .74 
 
 "*.*83" 
 
 .80 
 .93 
 .88 
 .92 
 
 .90 
 
 "".'97" 
 1.06 
 1.32 
 
 "i."27* 
 
 "i.'io" 
 
 .90 
 
 .98 
 
 "i.*22" 
 
 
 
 5 
 
 0.69 
 
 .69 
 .69 
 .70 
 
 1.32 
 
 .59 
 "\*76" 
 
 .92 
 
 .83 
 
 .85 
 
 """.*80" 
 
 0.97 
 
 **".*82* 
 
 .86 
 
 1.12 
 
 "T68* 
 
 1.06 
 
 .92 
 
 .84 
 
 1.22 
 1.56 
 1.08 
 1.12 
 .98 
 
 .93 
 
 .94 
 
 1.00 
 
 "\*88" 
 
 .85 
 
 .82 
 
 1.02 
 
 1.02 
 
 .89 
 
 0.90 
 
 6 
 
 7 
 
 8 
 
 .88 
 
 .90 
 
 1.00 
 
 9 
 
 .99 
 
 10 
 
 
 1.09 
 
 1.05 
 93 
 .95 
 
 .89 
 
 .98 
 "*2.*29* 
 
 .61 
 
 
 .89 
 
 11 
 
 .61 
 .61 
 .60 
 
 .50 
 
 .48 
 
 
 
 1.19 
 
 .81 
 
 12 
 
 .80 
 
 13 
 
 "*\*82" 
 .76 
 
 .84 
 1.04 
 
 .80 
 
 14... 
 
 .80 
 
 15... 
 
 .86 
 
 16. 
 
 .98 
 
 17.. 
 
 1.04 
 
 1.39 
 
 .99 
 
 1.14 
 
 .92 
 .91 
 .93 
 
 "\*86" 
 
 .84 
 .79 
 .74 
 .72 
 .79 
 
 
 .81 
 
 .79 
 
 .84 
 
 18.. 
 
 
 .95 
 .92 
 .89 
 
 .91 
 
 .99 
 
 .99 
 
 1.11 
 
 
 
 .84 
 
 19 
 
 .44 
 .44 
 
 .44 
 .42 
 .41 
 .41 
 .40 
 
 .40 
 .41 
 .38 
 
 .35 
 
 ***.*95* 
 
 .78 
 
 .60 
 
 ""."80" 
 
 .75 
 .74 
 
 .90 
 
 1.04 
 
 20. 
 
 1.26 
 
 21 .. 
 
 .75 
 
 .75 
 .79 
 .74 
 .71 
 
 .68 
 .64 
 .62 
 .62 
 
 .92 
 
 22 
 
 .72 
 
 
 
 1.35 
 
 23 
 
 
 
 .70 
 .71 
 .70 
 
 .65 
 
 .88 
 
 
 24 .. 
 
 .75 
 
 
 
 1.58 
 
 25 
 
 
 .81 
 
 .81 
 .82 
 .79 
 .80 
 .75 
 .71 
 
 .98 
 
 26... 
 
 1.19 
 1.01 
 .99 
 
 .70 
 '"."68" 
 
 .98 
 
 1.08 
 
 .98 
 
 1.45 
 
 27 
 
 
 28... 
 
 .90 
 
 29...... 
 
 .91 
 
 30 
 
 
 
 
 
 31... 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 54 at 2,700-foot level, near Silo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.2 
 
 .4 
 
 .7 
 
 1.3 
 
 2.3 
 
 3.5 
 
 4.7 
 5.4 
 3.7 
 2.4 
 
 0.2 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 .3 
 .3 
 .3 
 
 11 
 
 2.0 
 1.2 
 
 .8 
 .4 
 .4 
 
 .5 
 .5 
 .5 
 .5 
 
 .4 
 
 1.3 
 .7 
 2.9 
 1.3 
 1.3 
 
 1.3 
 2.0 
 2.6 
 3.7 
 
 4.7 
 
 0.2 
 
 1.3 
 
 4.7 
 
 10.0 
 
 21.0 
 
 10.6 
 11.5 
 10.6 
 12.4 
 12.4 
 
 21 
 
 0.4 
 .3 
 .3 
 .3 
 .2 
 
 .2 
 .2 
 .1 
 .1 
 .1 
 .1 
 
 4.5 
 4.3 
 4.1 
 3.9 
 3.7 
 
 1.3 
 
 .7 
 .5 
 .4 
 .2 
 
 2.7 
 
 2........... 
 
 
 12 
 
 22 
 
 .9 
 
 3 
 
 17.0 
 13.8 
 11.2 
 
 9.2 
 7.2 
 5.4 
 3.9 
 2.7 
 
 13 
 
 23 
 
 .9 
 
 4 
 
 14 
 
 24... 
 
 2.7 
 
 5 
 
 15 
 
 25 
 
 2.7 
 
 6... 
 
 16 
 
 26 
 
 2.4 
 
 7 
 
 17 
 
 27 
 
 2.4 
 
 8...1 ... 
 
 18 
 
 28 
 
 2.0 
 
 9...; 
 
 19 
 
 29 
 
 2.7 
 
 10 
 
 20 
 
 30 
 
 2.7 
 
 
 
 31 
 
 2.7 
 
 
 
 
ISLAND OF HAW An. 
 
 307 
 
 Daily discharge, in second-feet, at station No. 54 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 j 
 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 ¥l 
 (») 
 (<*) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 1.00 
 .40 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 9.00 
 
 20.00 
 40.00 
 50.00 
 35.00 
 2.00 
 
 5.40 
 3.00 
 2.00 
 2.00 
 
 1.80 
 
 1.60 
 
 1.30 
 
 .70 
 
 .40 
 
 .30 
 .60 
 .90 
 1.20 
 .90 
 
 3.50 
 4.70 
 9.70 
 10.30 
 8.00 
 
 5.80 
 3.50 
 12.70 
 2.60 
 5.70 
 
 1.60 
 1.40 
 1.70 
 1.40 
 1.00 
 
 .80 
 .50 
 .30 
 .30 
 .50 
 16.00 
 
 7.00 
 4.00 
 2.60 
 6.40 
 2.40 
 
 2.40 
 12.00 
 11.00 
 10.00 
 
 4.50 
 
 3.70 
 1.70 
 2.00 
 1.10 
 1.20 
 
 1.50 
 1.70 
 2.00 
 1.60 
 1.20 
 
 1.40 
 2.60 
 2.60 
 4.90 
 6.00 
 
 7.00 
 2.90 
 2.60 
 2.00 
 3.00 
 
 3.00 
 4.00 
 5.00 
 8.00 
 10.60 
 
 8.00 
 5.00 
 4.00 
 3.00 
 2.40 
 
 3.00 
 
 52.50 
 
 20 00 
 
 5.00 
 
 1.00 
 
 .50 
 .30 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .30 
 .30 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .30 
 
 .40 
 .50 
 60 
 .70 
 .50 
 
 .35 
 .40 
 .40 
 .40 
 .50 
 
 .80 
 1.10 
 1.40 
 1.70 
 2.00 
 
 2.40 
 4.30 
 2.40 
 2.00 
 2.00 
 
 0.50 
 
 1.10 
 
 20.00 
 
 10.00 
 
 1.60 
 
 .70 
 .90 
 .70 
 .50 
 .50 
 
 6.90 
 3.00 
 .80 
 3.50 
 1.00 
 
 .80 
 .60 
 .50 
 .40 
 .30 
 
 .30 
 .40 
 .50 
 .60 
 .60 
 
 .60 
 .70 
 .50 
 .50 
 .40 
 .20 
 
 0.60 
 
 1.00 
 
 25.00 
 
 2.00 
 
 .80 
 
 .80 
 .70 
 .40 
 .50 
 1.10 
 
 .80 
 .50 
 .70 
 .90 
 3.50 
 
 .50 
 .50 
 .90 
 1.30 
 .40 
 
 .40 
 .30 
 .20 
 .20 
 .20 
 
 .10 
 1.10 
 1.00 
 .80 
 .50 
 .30 
 
 2.50 
 3.00 
 6.00 
 10.00 
 2.90 
 
 2.70 
 6.20 
 1.40 
 1.20 
 .80 
 
 .50 
 2.60 
 1.40 
 1.30 
 
 .60 
 
 1.20 
 
 .80 
 .70 
 .40 
 .30 
 
 .30 
 .50 
 .30 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .50 
 
 0.60 
 .80 
 .80 
 .80 
 .50 
 
 .'50 
 .30 
 .30 
 .50 
 
 .70 
 
 .50 
 1.70 
 1.10 
 1.60 
 1.50 
 
 1.30 
 
 4.00 
 2.30 
 3.90 
 10.60 
 
 10.00 
 9.20 
 
 20.00 
 4.70 
 1.30 
 
 2.50 
 
 50.00 
 
 40.00 
 
 25.00 
 
 7.80 
 
 5.00 
 
 10.00 
 15.00 
 25.00 
 14.00 
 2.30 
 
 1.50 
 
 .70 
 
 1.00 
 
 5.20 
 
 12.00 
 
 11.00 
 
 4.30 
 
 3.90 
 
 1.60 
 
 .80 
 
 7.80 
 19.40 
 4.30 
 5.20 
 2.50 
 
 1.70 
 1.90 
 2.70 
 1.90 
 1.10 
 
 .90 
 
 .70 
 
 3.10 
 
 3.10 
 
 1.20 
 
 12.00 
 
 2 
 
 
 18.00 
 
 3 
 
 
 14.00 
 
 4 
 
 
 8.00 
 
 5 
 
 0.20 
 
 .20 
 .20 
 .20 
 
 1.30 
 
 6 
 
 1.10 
 
 7 
 
 1.30 
 
 8 
 
 2.70 
 
 9 
 
 2.60 
 
 10 
 
 
 1.20 
 
 11 
 
 
 .61 
 
 12 
 
 
 .50 
 
 13 
 
 
 .50 
 
 
 
 .50 
 
 15 
 
 
 1.00 
 
 16 
 
 
 2.40 
 
 
 
 .80 
 
 18 
 
 
 .80 
 
 
 
 3.50 
 
 20 
 
 
 8.90 
 
 21 
 
 
 1.60 
 
 22 
 
 
 11.50 
 
 23 
 
 
 40.00 
 
 
 
 20.20 
 
 25 
 
 
 2.40 
 
 26 
 
 
 15.00 
 
 
 
 20.00 
 
 28 
 
 
 1.30 
 
 
 
 1.40 
 
 30 
 
 
 1.00 
 
 
 
 
 1.00 
 
 
 
 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 54 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Month. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1911. 
 
 October 3-31 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 2.74 
 2.33 
 
 158.0 
 139,0 
 241.0 
 
 .10 
 5.87 
 3.28 
 3.83 
 
 4.48 
 
 6.15 
 338.00 
 202 
 228 
 275 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 0.90 
 1.92 
 1.55 
 1.64 
 6.77 
 5.53 
 5.39 
 
 3.43 
 
 53.60 
 
 118 
 95.30 
 97.80 
 
 416.00 
 
 329 
 
 331 
 
 2,490.00 
 
308 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements at station No. 55 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 1.11 
 
 .97 
 
 Sec.-ft. 
 0.21 
 
 
 Nov. 7 
 
 Feet. 
 1.18 
 1.16 
 
 j. 28 
 
 Sept. 28 
 
 Dec. 11 
 
 .29 
 
 
 
 
 Note.— Bed of stream of gravel and cobbles; shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 55 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 
 
 
 
 
 
 0.90 
 
 1.11 
 1.22 
 
 
 
 
 
 
 2 
 
 
 
 1.25 
 1.20 
 1.11 
 1.16 
 
 1.08 
 1.14 
 
 
 
 1.02 
 1.62 
 1.28 
 1.20 
 
 "i."i2* 
 
 1.09 
 1.09 
 1.18 
 
 "i.'io" 
 "i.'ii" 
 
 1.26 
 1.10 
 
 "i.'ii" 
 
 
 1.14 
 
 
 
 3 
 
 
 
 1.26 
 1.44 
 1.26 
 
 1.18 
 
 
 
 
 
 4 
 
 
 («) 
 (a) 
 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 1.12 
 1.05 
 .98 
 
 .95 
 .91 
 
 
 
 
 "i."35* 
 
 1.32 
 1.45 
 1.26 
 1.21 
 
 1.10 
 1.29 
 1.29 
 1.27 
 1.18 
 
 1.21 
 1.19 
 1.17 
 1.11 
 
 1.12 
 1.08 
 
 1.07 
 1.03 
 1.04 
 
 "i.'io" 
 
 1.07 
 1.22 
 1.16 
 1.22 
 
 1.19 
 
 "i.26" 
 1.36 
 1.56 
 
 "i'.h\ 
 
 "i."43* 
 1.27 
 
 1.31 
 "i.'48" 
 
 
 
 5 
 
 1.00 
 
 1.00 
 1.00 
 1.01 
 
 1.48 
 
 .84 
 
 1.28 
 
 1.16 
 1.20 
 
 "i.*ii" 
 
 1.31 
 
 "i.*i7" 
 
 1.18 
 1.42 
 
 "i.'ii" 
 
 1.40 
 1.26 
 1.19 
 
 1.51 
 1.65 
 1.42 
 1.46 
 1.31 
 
 1.29 
 1.29 
 1.38 
 
 "i.26" 
 
 1.18 
 1.15 
 1.36 
 1.35 
 1.20 
 
 1.26 
 
 6 
 
 1.20 
 
 7 
 
 1.20 
 
 8 
 
 
 
 .89 
 
 1.30 
 
 9 
 
 1.21 
 1.15 
 
 1.36 
 1.40 
 1.51 
 1.61 
 
 
 
 1.25 
 
 10 
 
 
 1.40 
 
 1.35 
 1.51 
 1.15 
 1.19 
 1.19 
 
 1.05 
 
 
 1.20 
 
 11 
 
 .94 
 .94 
 .92 
 .92 
 .92 
 
 .92 
 
 
 1.49 
 
 1.16 
 
 12 
 
 i.oi 
 
 
 1.10 
 
 13 
 
 
 1.19 
 1.34 
 
 1.09 
 
 14 
 
 
 .95 
 
 1.10 
 
 15 
 
 1.14 
 
 16 
 
 1.02 
 
 1.00 
 
 "i.'i3" 
 
 1.25 
 
 17 
 
 1.34 
 1.69 
 1.26 
 1.39 
 
 1.22 
 1.03 
 1.24 
 
 
 1.04 
 
 18 
 
 
 1.26 
 1.26 
 1.25 
 
 1.23 
 1.41 
 1.39 
 1.37 
 
 .99 
 
 
 1.11 
 
 19 
 
 .92 
 .92 
 
 .92 
 .91 
 .90 
 .90 
 .89 
 
 .89 
 .89 
 .86 
 
 .86 
 
 
 
 1.10 
 1.09 
 
 1.30 
 
 20 
 
 
 1.00 
 
 1.52 
 
 21 
 
 1.08 
 
 1.10 
 1.11 
 1.08 
 1.04 
 
 1.01 
 1.00 
 .99 
 .99 
 
 1.30 
 
 22... 
 
 1.00 
 
 
 
 1.64 
 
 23 
 
 
 
 1.04 
 1.05 
 1.02 
 
 1.01 
 
 1.11 
 
 
 24 
 
 1.10 
 
 
 
 1.64 
 
 25 
 
 1.28 
 1.10 
 
 .88 
 
 1.19 
 1.12 
 1.09 
 
 1.16 
 
 
 1.15 
 
 1.13 
 1.12 
 1.09 
 1.10 
 1.05 
 1.02 
 
 1.31 
 
 26 
 
 1.43 
 1.39 
 1.34 
 
 1.00 
 ""."98" 
 
 1.21 
 1.31 
 1.21 
 
 1.55 
 
 27 
 
 
 28 
 
 1.21 
 
 
 1.20 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a 
 
 Channe 
 
 Idry. 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 55 at 2,700-foot level, near Hilo, Hawaii t 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. v 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.01 
 .05 
 .10 
 .46 
 
 1.00 
 
 1.75 
 3.40 
 4.18 
 2.64 
 1.45 
 
 0.05 
 
 '.01 
 
 .01 
 
 .01 
 
 .01 
 
 .02 
 .02 
 .34 
 .58 
 .34 
 
 11 
 
 1.45 
 .70 
 .40 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 
 .08 
 
 0.70 
 .34 
 2.05 
 1.00 
 1.00 
 
 1.00 
 1.45 
 1.98 
 2.86 
 3.96 
 
 0.10 
 1.15 
 3.52 
 6.80 
 11.60 
 
 ..02 
 .05 
 .03 
 
 .08 
 .08 
 
 21 
 
 0.05 
 .01 
 .01 
 .01 
 .01 
 
 .01 
 .01 
 .01 
 .01 
 .01 
 .01 
 
 3.40 
 2.64 
 2.05 
 1.60 
 1.30 
 
 .58 
 .22 
 .16 
 .10 
 .08 
 
 0.02 
 
 2 
 
 
 12 
 
 22 
 
 .02 
 
 3 
 
 9.20 
 8.00 
 6.80 
 
 5.60 
 4.40 
 3.40 
 2.42 
 1.90 
 
 13 
 
 23 
 
 .02 
 
 4.... 
 
 14 
 
 24 
 
 .02 
 
 5 
 
 15 
 
 25 
 
 .02 
 
 6... 
 
 16 
 
 26 
 
 .02 
 
 7... 
 
 17 
 
 27 
 
 .02 
 
 8 
 
 18 
 
 28 
 
 .01 
 
 9 
 
 19 
 
 29 
 
 .02 
 
 10.. 
 
 20 
 
 30 
 
 .02 
 
 
 
 31 
 
 .02 
 
 
 
 
ISLAND OP HAWAII. 
 
 309 
 
 Daily discharge, in second-feet, at station No. 55 at 2,700-foot level, near Eilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (°) 
 
 (•) 
 (a) 
 
 0.20 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .30 
 
 2.00 
 6.00 
 11.00 
 5.00 
 1.90 
 
 .10 
 .10 
 .10 
 .10 
 
 1.00 
 1.40 
 .70 
 .20 
 .40 
 
 .10 
 .30 
 .60 
 .80 
 .40 
 
 3.50 
 4.40 
 7.00 
 9.40 
 7.30 
 
 5.20 
 3.10 
 11.00 
 1.60 
 4.20 
 
 1.00 
 1.10 
 1.30 
 1.10 
 .80 
 
 .60 
 .20 
 .10 
 .10 
 .50 
 8.00 
 
 5.00 
 3.00 
 1.60 
 5.40 
 1.60 
 
 .60 
 10.00 
 9.00 
 8.00 
 4.40 
 
 3.30 
 7.00 
 .40 
 .60 
 .60 
 
 .50 
 .80 
 1.60 
 1.60 
 1.40 
 
 1.10 
 4.60 
 4.20 
 3.70 
 4.40 
 
 5.10 
 4.20 
 3.10 
 1.00 
 1.00 
 
 1.00 
 2.00 
 3.00 
 4.00 
 6.30 
 
 5.00 
 1.00 
 .50 
 .20 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.80 
 
 2.40 
 
 .80 
 
 0.20 
 1.00 
 5.00 
 3.00 
 1.90 
 
 .50 
 .70 
 .40 
 .20 
 .20 
 
 6.60 
 2.00 
 
 .60 
 3.10 
 
 .60 
 
 .40 
 .30 
 .20 
 .10 
 .10 
 
 .10 
 .10 
 .20 
 .30 
 .40 
 
 .30 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 
 .20 
 
 9.70 
 
 1.90 
 
 .70 
 
 .40 
 .20 
 .10 
 .10 
 .60 
 
 .40 
 .10 
 .20 
 .30 
 1.60 
 
 .10 
 .20 
 .30 
 .50 
 .30 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .20 
 .20 
 .20 
 .10 
 .10 
 .20 
 
 2.00 
 3.00 
 5.00 
 7.00 
 3.30 
 
 2.60 
 
 5.60 
 
 1.60 
 
 .80 
 
 .50 
 
 .10 
 2.00 
 2.00 
 1.70 
 
 .60 
 
 .80 
 .60 
 .50 
 .20 
 .20 
 
 .10 
 .20 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.20 
 
 .30 
 
 .40 
 
 .20 
 
 • .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 1.00 
 
 .50 
 1.00 
 
 .80 
 
 .60 
 2.00 
 1.60 
 3.50 
 8.20 
 
 7.60 
 7.00 
 10.00 
 5.10 
 1.70 
 
 2.40 
 11.00 
 10.00 
 8.00 
 6.30 
 5.65 
 
 5.00 
 5.00 
 6.00 
 4.00 
 2.40 
 
 .50 
 
 .50 
 
 .60 
 
 4.90 
 
 9.00 
 
 7.00 
 4.60 
 4.40 
 1.60 
 .60 
 
 7.00 
 10.00 
 4.90 
 5.80 
 2.40 
 
 2.00 
 2.00 
 4.00 
 2.40 
 .70 
 
 .60 
 
 .40 
 
 3.50 
 
 3.30 
 
 .70 
 
 4.00 
 
 2 
 
 
 8.00 
 
 3 
 
 
 5.00 
 
 4 
 
 
 3.00 
 
 5 
 
 
 1.60 
 
 6 
 
 
 .70 
 
 7 
 
 
 .70 
 
 8 
 
 
 2.20 
 
 9...' 
 
 
 1.40 
 
 10 
 
 
 .70 
 
 11 
 
 
 .50 
 
 12 
 
 
 .10 
 
 13 
 
 
 .10 
 
 
 
 .10 
 
 15 
 
 
 .30 
 
 16 
 
 
 1.40 
 
 
 
 .60 
 
 18 
 
 
 .20 
 
 
 
 2.20 
 
 20 
 
 
 7.30 
 
 21 
 
 
 2.20 
 
 22 
 
 
 10.00 
 
 23 
 
 
 11.00 
 
 
 
 10.00 
 
 25 
 
 
 2.40 
 
 26 
 
 
 8.00 
 
 
 
 4.00 
 
 28 
 
 
 .80 
 
 
 
 .70 
 
 30 
 
 
 .50 
 
 
 
 
 .50 
 
 
 
 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from poorly denned rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
 near station No. 50. 
 
 Monthly discharge at station No. 55 at 2,700-foot level, near Eilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 3-31 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 1.56 
 1.45 
 
 .81 
 
 .10 
 
 .94 
 
 2.46 
 
 3.29 
 
 .81 
 
 Run-off 
 (total in 
 acre-feet). 
 
 89.50 
 86.50 
 49.80 
 
 6.15 
 
 54. 10 
 
 154.00 
 
 196.00 
 
 49.80 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 0.30 
 .94 
 .63 
 1.37 
 3.09 
 3.53 
 2.91 
 
 1.70 
 
 17.90 
 57.80 
 38.70 
 81.50 
 190.00 
 210.00 
 179.00 
 
 1,230.00 
 
310 
 
 WATER RESOURCES OP HAWAII, 1912. 
 
 Discharge measurements at station No. 56 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.) 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 0.54 
 .40 
 
 Sec.-ft. 
 
 
 
 Nov. 7 
 
 Feet. 
 0.41 
 .46 
 
 Sec.-ft. 
 
 o 
 
 Sept. 28 
 
 Dec. 11 
 
 o 
 
 I 
 
 
 
 Note.— Bed of stream of sand and silt; shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 56 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayefi, Selitonott, and Kuznetsorf , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.38 
 
 0.50 
 .61 
 
 
 
 
 
 
 2 
 
 
 
 .62 
 .62 
 .52 
 .52 
 
 .55 
 
 1.84 
 
 
 
 0.52 
 1.05 
 .68 
 .64 
 
 "".'55' 
 .55 
 .57 
 
 .64 
 
 "".'48" 
 
 """.to 
 
 .70 
 
 
 0.44 
 
 
 
 3 
 
 
 
 .72 
 .52 
 .68 
 
 .68 
 
 
 
 
 
 4 
 
 
 (a) 
 (a) 
 
 "(a)" 
 
 (°) 
 (a) 
 
 (°) 
 
 (a) 
 (a) 
 
 (a) 
 (°) 
 
 
 
 
 "6.65" 
 
 .70 
 .73 
 .67 
 .65 
 
 .58 
 .69 
 .67 
 .69 
 .54 
 
 .55 
 .52 
 .51 
 .51 
 
 .42 
 
 .42 
 
 .42 
 
 .41 
 
 .41 
 
 ------- 
 
 .40 
 .45 
 .41 
 .42 
 
 .44 
 
 '"."52' 
 .53 
 .63 
 
 """.66" 
 
 '"".'54* 
 .43 
 
 .50 
 
 ".6i" 
 
 
 
 5 
 
 0.51 
 
 .51 
 .52 
 
 .54 
 
 0.92 
 
 .30 
 
 .65 
 
 .51 
 
 .58 
 
 "".'55' 
 
 0.52 
 
 ...... 
 
 .44 
 .60 
 
 "*.*55" 
 
 .54 
 .49 
 .44 
 
 .69 
 .72 
 .61 
 .58 
 .51 
 
 .51 
 .51 
 .54 
 
 "*\"46" 
 
 .45 
 .45 
 .57 
 .55 
 
 .47 
 
 0.47 
 
 6 
 
 .48 
 
 7 
 
 .52 
 
 8 
 
 
 
 .30 
 
 .52 
 
 9 
 
 .64 
 .61 
 
 .72 
 .69 
 .89 
 .99 
 
 
 
 .50 
 
 10 
 
 
 .70 
 
 .68 
 .63 
 .65 
 .61 
 .62 
 
 .65 
 
 
 .49 
 
 11 
 
 (a) 
 
 (°) 
 
 (°) 
 
 (a) 
 (a) 
 
 
 .79 
 
 .44 
 
 12 
 
 .61 
 
 
 .43 
 
 13. 
 
 
 .59 
 .70 
 
 .42 
 
 14 
 
 
 .46 
 
 .44 
 
 15 
 
 .48 
 
 16 
 
 .56 
 
 .50 
 
 
 .53 
 
 17 
 
 .66 
 
 1.03 
 
 .71 
 
 .72 
 
 .62 
 .61 
 
 .64 
 
 
 .65 
 
 .54 
 
 .49 
 
 18 
 
 
 .64 
 .68 
 .61 
 
 .69 
 .70 
 .68 
 .70 
 
 (a) 
 
 
 .45 
 
 19 
 
 (a) 
 (a) 
 
 (a) 
 
 (aj 
 
 («) 
 
 (a) 
 
 (°) 
 (a) 
 
 (°) 
 (°) 
 
 """.65' 
 
 
 .55 
 
 .54 
 
 .62 
 
 .54 
 
 20 
 
 
 .51 
 
 .62 
 
 21 
 
 .54 
 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .42 
 .40 
 .40 
 
 .51 
 
 22 
 
 .52 
 
 
 
 .64 
 
 23 
 
 
 
 .54 
 .51 
 .52 
 
 .51 
 
 .58 
 
 
 24 
 
 .53 
 
 
 
 .67 
 
 25 .'. 
 
 
 .64 
 
 .62 
 .60 
 .54 
 .52 
 .59 
 
 
 .60 
 
 .59 
 .58 
 .57 
 .57 
 .55 
 .53 
 
 .53 
 
 26 
 
 .79 
 .73 
 .70 
 
 .45 
 "".'46" 
 
 .58 
 .68 
 
 .58 
 
 1.10 
 
 27 
 
 
 28 
 
 .50 
 
 
 .50 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 56 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.10 
 .14 
 .18 
 .24 
 .32 
 
 .40 
 .60 
 .65 
 .52 
 .36 
 
 (a) 
 (°) 
 
 N 
 
 (0) 
 
 (a) 
 
 li 
 
 0.01 
 
 11 
 
 0.18 
 .12 
 .05 
 .01 
 .02 
 
 .05 
 .06 
 .08 
 .10 
 .10 
 
 0.20 
 .12 
 .56 
 .28 
 .24 
 
 .24 
 .32 
 .40 
 
 .44 
 .52 
 
 0.01 
 
 .20 
 
 .60 
 
 1.10 
 
 3.38 
 
 1.00 
 1.22 
 1.05 
 1.22 
 1.22 
 
 21 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .02 
 .02 
 .02 
 .02 
 .02 
 
 0.44 
 .40 
 .36 
 .32 
 
 .28 
 
 .03 
 .01 
 .01 
 .01 
 
 .01 
 
 0.40 
 
 2.. 
 
 
 12 
 
 22 
 
 .28 
 
 3... 
 
 
 13 
 
 23 
 
 .20 
 
 4 
 
 
 14 
 
 24 
 
 .40 
 
 5 
 
 
 15 
 
 25 
 
 .10 
 
 6 
 
 
 16 
 
 26 
 
 .10 
 
 7 
 
 
 17 
 
 27 
 
 .05 
 
 8... 
 
 
 18 
 
 28 
 
 .05 
 
 9.... 
 
 0.36 
 .24 
 
 19 
 
 29 
 
 .10 
 
 10.... 
 
 20 
 
 30 
 
 .10 
 
 
 
 31 
 
 .10 
 
 
 
 
 a Channel dry. 
 
ISLAND OP HAWAII. 
 
 311 
 
 Daily discharge, in second-feet, at station No. 56 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 
 
 (a) 
 (a) 
 a) 
 la) 
 (a) 
 
 (») 
 (a) 
 
 h 
 
 y\ 
 
 (a) 
 
 n 
 
 a 
 (a) 
 
 n 
 
 n 
 
 (a) 
 (a) 
 0.40 
 
 1.20 
 5.00 
 7.50 
 1.50 
 .50 
 
 .20 
 .10 
 .10 
 .10 
 
 0.20 
 .30 
 .30 
 .20 
 .20 
 
 .10 
 
 7.30 
 
 4.00 
 
 .40 
 
 .20 
 
 .70 
 
 .60 
 
 1.60 
 
 2.20 
 
 1.60 
 
 1.00 
 .40 
 
 2.50 
 .60 
 .70 
 
 .30 
 .20 
 .40 
 .40 
 .40 
 
 .30 
 .20 
 .10 
 .10 
 .20 
 3.50 
 
 1.50 
 1.00 
 .70 
 .60 
 .50 
 
 .50 
 4.00 
 3.00 
 2.50 
 
 .60 
 
 .30 
 .30 
 .40 
 .20 
 .30 
 
 .40 
 .60 
 .40 
 .50 
 .20 
 
 .60 
 .60 
 .50 
 .60 
 .80 
 
 1.00 
 .80 
 .60 
 .50 
 .40 
 
 
 
 0.20 
 .20 
 .60 
 .50 
 .40 
 
 .30 
 .20 
 .20 
 .10 
 .10 
 
 1.00 
 .50 
 .20 
 .60 
 .50 
 
 .50 
 .40 
 .30 
 .10 
 .10 
 
 .10 
 .10 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 
 2.60 
 .50 
 .40 
 
 .20 
 .10 
 .10 
 .10 
 .40 
 
 .30 
 .30 
 .30 
 .20 
 .60 
 
 .20 
 .10 
 .20 
 .30 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .20 
 .20 
 .10 
 .10 
 .10 
 
 1.00 
 2.00 
 3.00 
 5.00 
 .40 
 
 .60 
 .70 
 .50 
 .40 
 .30 
 
 .20 
 .60 
 .50 
 .60 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .20 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 1.80 
 
 
 
 
 
 g 
 
 
 
 
 
 7 
 
 
 
 
 
 
 
 8' 
 
 0.10 
 
 
 
 
 
 
 9 
 
 
 
 
 0.20 
 
 
 10 
 
 
 .40 
 
 
 
 11 
 
 
 
 
 
 12 
 
 
 .20 
 
 
 
 .io 
 
 .10 
 
 
 13 
 
 
 
 
 
 
 
 
 15 
 
 
 
 
 
 
 
 16 
 
 
 .10 
 
 
 ' "o.'io" 
 
 .30 
 
 .60 
 .70 
 .20 
 .20 
 
 0.10 
 
 
 
 
 18 .. -- 
 
 
 
 
 
 
 
 
 
 .10 
 
 20 
 
 
 
 
 .30 
 
 21 
 
 
 
 
 
 22 
 
 
 
 
 .20 
 
 "".'io' 
 
 "."io 
 
 .40 
 
 23 
 
 
 
 
 
 
 
 .10 
 
 
 .50 
 
 25 
 
 
 .10 
 
 26 
 
 
 
 0.20 
 .50 
 .20 
 
 
 
 2.90 
 
 
 
 
 
 
 28 
 
 
 ""."26" 
 
 .io 
 
 .10 
 
 
 
 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near 
 station No. 50. 
 
 Monthly discharge at station No. 56 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 9-31 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 discharge 
 in second- 
 feet. 
 
 .05 
 
 .57 
 
 1.01 
 
 .84 
 
 Run-off 
 (total in 
 acre-feet). 
 
 4.11 
 17.30 
 25.60 
 
 3.07 
 32.80 
 62.10 
 50.00 
 18.40 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October , 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.15 
 
 .28 
 .28 
 .58 
 .50 
 .40 
 .40 
 
 Run-off 
 (total in 
 acre-feet). 
 
 17.20 
 17.20 
 34.50 
 30.70 
 23.80 
 24.60 
 
 323.00 
 
 Discharge measurements at station No. 57 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 0.85 
 
 .75 
 
 Sec.-ft. 
 0.05 
 
 
 Nov. 7 
 
 Feet. 
 0.88 
 .88 
 
 Sec.-ft. 
 0.12 
 
 Sept. 28 
 
 Dec. 11 . 
 
 .12 
 
 
 
 
 Note. — Bed of stream of sand and silt; shifting. One channel at all stages. 
 
312 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height.,, in feet, at station No. 57 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsoff, observers.] 
 
 • Day. '*■ 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 I...... 
 
 
 
 
 
 
 0.70 
 
 0.85 
 .93 
 
 
 
 
 
 
 2.... 
 
 
 
 0.80 
 .90 
 .86 
 .81 
 
 .80 
 .90 
 
 
 
 0.80 
 
 1.20 
 
 .93 
 
 .91 
 
 '"".*88" 
 .82 
 .88 
 .89 
 
 *".*84" 
 
 """."89" 
 .92 
 
 
 0.86 
 
 
 
 3..:... 
 
 
 
 0.88 
 
 1.10 
 
 .91 
 
 .91 
 
 
 
 
 
 4...w 
 
 
 "W 
 
 (») 
 
 (a) 
 (a) 
 0.89 
 .79 
 .74 
 
 .72 
 .71 
 
 
 
 
 ""6." 97" 
 
 .95 
 
 1.00 
 
 .91 
 
 .88 
 
 .81 
 .91 
 .88 
 
 .87 
 .89 
 
 .84 
 .82 
 
 .82 
 .80 
 .80 
 
 '""."83" 
 
 .81 
 .90 
 .86 
 .90 
 
 .90 
 
 ""."93" 
 
 .99 
 
 1.12 
 
 ""i.'os" 
 "i.'oi" 
 
 .90 
 .90 
 
 "i.'oo* 
 
 
 
 5 
 
 0. 75 
 
 .75 
 .75 
 
 .78 
 
 1.20 
 
 .61 
 
 .95 
 
 .88 
 .90 
 
 ""."82" 
 
 0.93 
 
 """*88" 
 
 .90 
 
 1.00 
 
 "T62" 
 
 1.00 
 
 .93 
 
 .90 
 
 1.08 
 1.21 
 1.02 
 1.03 
 .95 
 
 .94 
 .93 
 
 .98 
 
 ""'."96" 
 
 .90 
 .89 
 .98 
 .97 
 .91 
 
 0.90 
 
 6 
 
 .90 
 
 7 
 
 .90 
 
 8. . . . . 
 
 
 
 .64 
 
 .91 
 
 9 ;........ 
 
 .9i 
 
 .82 
 
 1.01 
 1.01 
 1.11 
 1.21 
 
 
 
 .91 
 
 10.... 
 
 
 .96 
 
 .98 
 .91 
 .91 
 .89 
 .90 
 
 .81 
 
 
 .90 
 
 11 
 
 .71 
 .71 
 .70 
 .70 
 .68 
 
 .60 
 
 
 1.02 
 
 .88 
 
 12 
 
 .80 
 
 
 .85 
 
 13 
 
 
 .90 
 .98 
 
 .82 
 
 14 
 
 
 .75 
 
 .85 
 
 16 
 
 .86 
 
 16....... 
 
 .76 
 
 .77 
 
 
 .91 
 
 17 
 
 .77 
 
 1.21 
 
 .94 
 
 .97 
 
 .91 
 .89 
 .91 
 
 
 .84 
 
 .83 
 
 .87 
 
 .84 
 .82 
 
 .88 
 
 18 
 
 
 .5i 
 
 .97 
 .91 
 
 .94 
 
 1.00 
 
 .97 
 
 .98 
 
 .81 
 
 
 .88 
 
 19 
 
 (a) 
 
 00 
 
 (a) 
 (o) 
 (a) 
 
 h) 
 
 (a) 
 
 (a) 
 («) 
 («) 
 (a) 
 
 (a 
 
 
 
 .82 
 .81 
 
 .90 
 
 .95 
 
 20 
 
 
 .76 
 
 1.18 
 
 21 
 
 .82 
 
 .82 
 .83 
 .81 
 .80 
 
 .80 
 .78 
 
 .74 
 .72 
 
 .96 
 
 22 
 
 .78 
 
 
 
 1.29 
 
 23.... 
 
 
 
 .81 
 .94 
 .90 
 
 .80 
 .84 
 
 
 24 
 
 .81 
 
 
 
 1.24 
 
 25 
 
 .90 
 .79 
 
 .91 
 
 .88 
 .85 
 .79 
 .76 
 .83 
 
 
 .88 
 
 .88 
 .88 
 .81 
 .83 
 .81 
 .80 
 
 .94 
 
 26 
 
 1.07 
 .98 
 .96 
 
 .78 
 "".75 
 
 .81 
 .95 
 .81 
 
 1.20 
 
 27 
 
 
 28 
 
 .92 
 
 29 
 
 .90 
 
 30 
 
 
 
 
 
 31. . . 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 « Channel dry. 
 
 Daily discharge, in second-feet, at station No. 57 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 . . , 
 
 
 0.03 
 .05 
 .10 
 .11 
 .15 
 
 .18 
 .40 
 .49 
 .32 
 .20 
 
 0.01 
 .01 
 .01 
 .01 
 .02 
 
 .01 
 .03 
 .05 
 .10 
 .05 
 
 11 
 
 0.20 
 .13 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.12 
 
 .05 
 .25 
 .15 
 .15 
 
 .15 
 
 .20 
 .25 
 .32 
 .40 
 
 0.05 
 
 .22 
 
 .61 
 
 1.08 
 
 2.40 
 
 .35 
 .46 
 .35 
 .46 
 .46 
 
 21 
 
 0.05 
 .05 
 .05 
 .05 
 .02 
 
 .02 
 .02 
 .01 
 .01 
 .01 
 .01 
 
 0.40 
 .40 
 .40 
 .38 
 .38 
 
 .05 
 .02 
 .05 
 .05 
 .01 
 
 0.13 
 
 2..... ,'.■„... 
 
 
 12 
 
 22 
 
 .10 
 
 3... 
 
 
 13 
 
 23 
 
 .10 
 
 4 
 
 
 14 
 
 24 
 
 .10 
 
 5 
 
 
 15 
 
 25 
 
 .05 
 
 6 
 
 
 16 
 
 26 
 
 .05 
 
 7 
 
 
 17 
 
 27 
 
 .05 
 
 8.„ , 
 
 
 18 
 
 28 
 
 .05 
 
 9 
 
 0.25 
 
 .28 
 
 19 
 
 29 
 
 .05 
 
 10 
 
 20 
 
 30 
 
 .05 
 
 
 
 31 
 
 .05 
 
 
 
 
ISLAND OF HAWAII. 
 
 313 
 
 Daily discharge, in second-feet, at station No. 57 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 0.05 
 .05 
 .15 
 .10 
 .05 
 
 .05 
 .IS 
 .15 
 .15 
 
 .05 
 
 .45 
 .45 
 .75 
 .05 
 .95 
 
 .05 
 .05 
 .05 
 .25 
 .30 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 .80 
 
 0.30 
 .20 
 .15 
 .70 
 .15 
 
 .15 
 .90 
 .80 
 .70 
 .30 
 
 .35 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .30 
 .15 
 
 .25 
 .40 
 .30 
 .35 
 .60 
 
 .90 
 .35 
 .30 
 .20 
 .10 
 
 0.20 
 .30 
 .40 
 .60 
 
 1.00 
 
 .60 
 .30 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 '"6*05" 
 .05 
 
 """."65* 
 
 .05 
 .25 
 .05 
 
 0.10 
 .20 
 .40 
 .30 
 .25 
 
 .15 
 .15 
 
 .10 
 .05 
 .05 
 
 .45 
 .30 
 .15 
 .35 
 .20 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .20 
 .15 
 
 .15 
 .15 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 
 1.00 
 .20 
 .15 
 
 .15 
 .15 
 .05 
 .15 
 .15 
 
 .10 
 .10 
 .10 
 .15 
 .20 
 
 .10 
 .05 
 .10 
 .15 
 .10 
 
 .05 
 .05 
 .05 
 .25 
 .15 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.40 
 .50 
 .60 
 .70 
 .30 
 
 .25 
 .40 
 .15 
 .15 
 .10 
 
 .05 
 .15 
 .15 
 .10 
 .15 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 .10 
 
 .05 
 .15 
 .10 
 .15 
 .15 
 
 .15 
 .50 
 .20 
 .35 
 .75 
 
 .70 
 .65 
 1.10 
 .45 
 .15 
 
 .15 
 
 1.40 
 
 1.00 
 
 .70 
 
 .40 
 
 .20 
 
 0.30 
 .20 
 
 1.00 
 .40 
 .20 
 
 .20 
 .15 
 .15 
 .40 
 
 ""."45" 
 .40 
 .20 
 .15 
 
 .65 
 1.00 
 .45 
 .50 
 .25 
 
 .25 
 .20 
 .35 
 .20 
 .15 
 
 .15 
 .15 
 .35 
 .30 
 .15 
 
 0.40 
 
 2 
 
 
 1.00 
 
 3 
 
 
 .30 
 
 4 
 
 
 .20 
 
 5 
 
 0.05 
 
 .05 
 .05 
 .05 
 
 .15 
 
 6 
 
 .15 
 
 7 
 
 .15 
 
 8 
 
 .15 
 
 9 
 
 .15 
 
 10 
 
 
 .15 
 
 11 
 
 
 .15 
 
 12 
 
 
 <«) 
 0.15 
 .05 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 .20 
 
 .50 
 
 1.00 
 
 1.40 
 
 .80 
 
 .15 
 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 
 13 
 
 
 .05 
 
 14 
 
 
 .10 
 
 15 
 
 
 .10 
 
 16 
 
 
 .15 
 
 17 
 
 
 .15 
 
 18 
 
 
 .15 
 
 19 
 
 
 .25 
 
 20 
 
 .95 
 
 21 
 
 
 .30 
 
 22 
 
 
 1.35 
 
 23 
 
 
 2.50 
 
 24 
 
 
 1.15 
 
 25 
 
 
 .25 
 
 26 
 
 
 1.00 
 
 27..., 
 
 
 .40 
 
 28 
 
 
 .20 
 
 29 
 
 
 .15 
 
 30 
 
 
 .10 
 
 31 
 
 
 
 .10 
 
 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from poorly denned rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
 near station No. 50. 
 
 Monthly discharge at station No. 57 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 9-31 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.07 
 .21 
 .24 
 
 .02 
 .16 
 .24 
 .33 
 .15 
 
 Run-off 
 (total in 
 acre-feet). 
 
 3.20 
 12.30 
 14.90 
 
 1.23 
 9.20 
 14.80 
 19.60 
 9.22 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.05 
 .15 
 .14 
 .17 
 .33 
 .32 
 .40 
 
 ,21 
 
 2.98 
 9.22 
 8.61 
 10.10 
 20.30 
 19.00 
 24.60 
 
 149.00 
 
314 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements at station No. 58 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 0.75 
 .60 
 
 Sec. feet. 
 
 0.03 
 
 
 
 Nov. 7.. . 
 
 Feet. 
 0.80 
 .76 
 
 Sec.-ft. 
 16 
 
 Sept. 28 
 
 Dec. 11 
 
 .10 
 
 
 
 
 Note.— Bed of stream of sand and silt; shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 58 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.50 
 
 0.72 
 
 .83 
 
 
 
 
 
 
 2 
 
 
 
 0.85 
 .82 
 .81 
 .72 
 
 .74 
 .83 
 
 
 
 0.69 
 
 1.25 
 
 .87 
 
 .82 
 
 ""."79" 
 .74 
 .80 
 .81 
 
 ""*75* 
 
 "*\*86" 
 .85 
 
 
 0.78 
 
 
 
 3 
 
 
 
 0.82 
 
 1.02 
 
 .92 
 
 .94 
 
 
 
 
 
 4 
 
 
 («) 
 (a) 
 
 —(a)" 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 0.74 
 .65 
 .60 
 
 .55 
 .51 
 
 
 
 
 '"6.*9i" 
 
 .90 
 
 1.02 
 
 .84 
 
 .81 
 
 .78 
 .90 
 .86 
 .83 
 .80 
 
 .81 
 .80 
 .79 
 .75 
 
 .78 
 .74 
 
 .74 
 
 .72 
 
 .70 
 
 ----- 
 
 .70 
 .82 
 
 .78 
 .82 
 
 .80 
 
 ""."86" 
 
 .91 
 
 1.10 
 
 ""i.'oi" 
 
 ""."98" 
 .83 
 
 .78 
 ""i."03" 
 
 
 
 5 
 
 0.70 
 
 .70 
 .70 
 .72 
 
 1.19 
 
 .48 
 
 .88 
 
 .77 
 .80 
 
 *".*78" 
 
 0.92 
 
 "'"."83" 
 
 .83 
 
 1.02 
 
 '"i."6i" 
 
 1.00 
 .90 
 
 .84 
 
 1.14 
 1.26 
 
 .88 
 1.02 
 
 .95 
 
 .94 
 
 .93 
 
 1.00 
 
 """."88" 
 
 .85 
 .84 
 .98 
 .98 
 .89 
 
 0.88 
 
 6 [ 
 
 .83 
 
 7 
 
 .85 
 
 8 
 
 
 
 .50 
 
 .90 
 
 9 
 
 .59 
 .81 
 
 .96 
 
 .96 
 
 1.19 
 
 1.26 
 
 
 
 .90 
 
 10 
 
 
 .89 
 
 .72 
 .92 
 .91 
 
 .78 
 
 .78 
 
 .80 
 
 
 .89 
 
 11. 
 
 .62 
 .62 
 .61 
 .61 
 
 .58 
 
 .55 
 
 
 .99 
 
 .86 
 
 12 
 
 .78 
 
 
 .82 
 
 13 
 
 
 .93 
 .89 
 
 .80 
 
 14 
 
 
 .60 
 
 .82 
 
 15 
 
 .86 
 
 16 
 
 .69 
 
 .68 
 
 
 .91 
 
 17 
 
 .92 
 1.25 
 
 .85 
 1.01 
 
 .82 
 .80 
 .85 
 
 
 .82 
 
 .74 
 
 .84 
 
 IS 
 
 
 .91 
 .92 
 
 .88 
 
 .89 
 
 .96 
 
 .97 
 
 1.01 
 
 ,68 
 
 
 .80 
 
 19 
 
 («) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 
 
 .72 
 .71 
 
 .80 
 
 1.00 
 
 20 
 
 
 .70 
 
 1.22 
 
 21 
 
 .72 
 
 .74 
 .74 
 .72 
 .70 
 
 .66 
 .64 
 .61 
 .60 
 
 .92 
 
 22 
 
 .68 
 
 
 
 1.36 
 
 23 
 
 
 
 .70 
 .70 
 .68 
 
 .74 
 
 
 24 
 
 .71 
 
 
 
 1.22 
 
 25... 
 
 .81 
 .70 
 
 .81 
 
 .82 
 .76 
 .72 
 .69 
 .76 
 
 
 .80 
 
 .80 
 .79 
 .73 
 .78 
 .75 
 .70 
 
 .90 
 
 26 
 
 1.19 
 1.11 
 1.09 
 
 .67 
 ""'."60* 
 
 .78 
 .88 
 
 .78 
 
 1.19 
 
 27 
 
 .88 
 
 28 
 
 .89 
 
 29 
 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a 
 
 Channe 
 
 ldry. 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 58 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.05 
 .05 
 .10 
 .15 
 .22 
 
 .30 
 .78 
 1.04 
 .66 
 .36 
 
 0.05 
 .03 
 .03 
 .02 
 .03 
 
 .03 
 .02 
 .05 
 .10 
 .05 
 
 11 
 
 0.28 
 .20 
 .12 
 .10 
 .10 
 
 .10 
 .10 
 
 .10 
 .10 
 .05 
 
 0.20 
 .10 
 .42 
 .25 
 .25 
 
 .28 
 .30 
 .36 
 .60 
 
 .78 
 
 0.03 
 .28 
 1.04 
 2.02 
 6.22 
 
 '1.74 
 
 1.95 
 1.88 
 1.95 
 1.95 
 
 21 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .02 
 .02 
 .01 
 
 0.66 
 .54 
 .48 
 .42 
 .30 
 
 .25 
 .10 
 .10 
 
 .05 
 .05 
 
 0.84 
 
 2 
 
 
 12. 
 
 22 
 
 .60 
 
 3 
 
 
 13 
 
 23 
 
 .42 
 
 4 
 
 
 14 
 
 24 
 
 .54 
 
 5 
 
 
 15 
 
 25 
 
 .36 
 
 6 
 
 
 16 
 
 26 
 
 .30 
 
 7... 
 
 
 17 
 
 27 
 
 .30 
 
 8 
 
 
 18 
 
 28 
 
 .30 
 
 9 
 
 0.60 
 .42 
 
 19... 
 
 29 
 
 .36 
 
 10... 
 
 20 
 
 30 
 
 .30 
 
 
 
 31 
 
 .30 
 
 
 
 
ISLAND OF HAWAII. 
 
 315 
 
 Daily discharge, in second-feet, at station No. 58 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1.. 
 
 
 (a) 
 
 (a) 
 
 («) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 
 0.15 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .30 
 
 1.00 
 3.00 
 4.00 
 2.00 
 
 .85 
 
 .05 
 .05 
 .05 
 .05 
 
 0.20 
 .60 
 .40 
 .35 
 .10 
 
 .15 
 .50 
 .40 
 .40 
 .35 
 
 1.30 
 1.30 
 3.00 
 3.60 
 1.50 
 
 1.20 
 1.05 
 3.50 
 .60 
 1.65 
 
 .40 
 .30 
 .60 
 .40 
 .35 
 
 .40 
 .20 
 .10 
 .05 
 .20 
 3.50 
 
 0.90 
 
 .60 
 
 .40 
 
 1.75 
 
 1.05 
 
 1.20 
 4.00 
 2.50 
 1.00 
 
 .85 
 
 .10 
 1.05 
 .95 
 .25 
 .25 
 
 .40 
 .60 
 .95 
 1.05 
 .80 
 
 .85 
 1.30 
 1.40 
 1.65 
 2.00 
 
 3.00 
 2.40 
 2.25 
 1.00 
 1.00 
 
 1.50 
 1.50 
 1.50 
 2.00 
 3.00 
 
 2.80 
 
 2.00 
 
 1.00 
 
 .50 
 
 .30 
 
 .30 
 .25 
 .20 
 .15 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 '"*."05* 
 
 .25 
 .80 
 .25 
 
 0.10 
 .50 
 
 1.00 
 .90 
 
 .80 
 
 .20 
 .30 
 .30 
 .25 
 .30 
 
 1.55 
 
 1.30 
 
 1.10 
 
 .85 
 
 .50 
 
 .50 
 .40 
 .30 
 .10 
 .05 
 
 .10 
 .15 
 .20 
 .25 
 .30 
 
 .30 
 .25 
 .10 
 .25 
 .15 
 .05 
 
 0.05 
 .05 
 
 3.50 
 .70 
 .40 
 
 .30 
 .25 
 .15 
 .30 
 .35 
 
 .25 
 .15 
 .20 
 .30 
 .60 
 
 .10 
 .15 
 .20 
 .30 
 .10 
 
 .10 
 .10 
 .05 
 .05 
 .05 
 
 .15 
 .20 
 .15 
 .10 
 .10 
 .10 
 
 1.00 
 2.00 
 3.00 
 4.00 
 .95 
 
 .90 
 1.75 
 .55 
 .35 
 .30 
 
 .25 
 .90 
 .65 
 .50 
 .30 
 
 .35 
 .30 
 .25 
 .15 
 .15 
 
 .15 
 .15 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .15 
 
 0.30 
 .25 
 
 .25 
 .25 
 .15 
 
 .15 
 .10 
 .05 
 .05 
 
 .05 
 
 .05 
 .40 
 .25 
 .40 
 .40 
 
 .30 
 
 1.00 
 
 .65 
 
 .95 
 
 2.30 
 
 2.10 
 1.90 
 3.50 
 1.45 
 .50 
 
 .25 
 4.50 
 4.00 
 3.00 
 1.80 
 1.50 
 
 1.20 
 1.00 
 1.00 
 1.00 
 1.05 
 
 .80 
 
 .50 
 
 .50 
 
 1.75 
 
 4.00 
 
 3.00 
 
 1.65 
 
 1.60 
 
 .90 
 
 .55 
 
 2.60 
 3.60 
 .80 
 1.75 
 1.25 
 
 1.20 
 1.10 
 1.60 
 1.20 
 .80 
 
 .60 
 
 .55 
 
 1.45 
 
 1.45 
 
 .85 
 
 1.00 
 
 2 . 
 
 
 3.00 
 
 3 
 
 
 .80 
 
 4 
 
 
 .80 
 
 5 
 
 0.05 
 
 .05 
 .05 
 .10 
 
 .80 
 
 6 
 
 .50 
 
 7 
 
 .60 
 
 8 
 
 .90 
 
 9 
 
 .90 
 
 10 
 
 
 .85 
 
 11 
 
 
 .65 
 
 12 
 
 
 .40 
 
 13 
 
 
 .30 
 
 
 
 .40 
 
 K 
 
 
 .65 
 
 16 
 
 
 .95 
 
 
 
 .55 
 
 18 
 
 
 .30 
 
 19 
 
 
 1.60 
 
 20 
 
 
 3.25 
 
 21 
 
 
 1.05 
 
 22 
 
 
 4.40 
 
 23 
 
 
 4.00 
 
 24 
 
 
 3.25 
 
 25 
 
 
 .90 
 
 26 
 
 
 3.00 
 
 27 
 
 
 .80 
 
 28 
 
 
 .85 
 
 29 
 
 
 .70 
 
 30 '.. 
 
 
 .50 
 
 31 
 
 
 
 .50 
 
 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
 near station No. 50. 
 
 Monthly discharge at station No. 58 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 1911 
 
 October 9-31 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 0.12 
 .34 
 
 .78 
 
 .02 
 .41 
 .92 
 1.25 
 .58 
 
 Run-off 
 (total in 
 acre-feet). 
 
 5.40 
 20.20 
 47.90 
 
 1.23 
 23.60 
 56.60 
 74.40 
 35.70 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.05 
 
 .43 
 
 .31 
 
 .65 
 
 1.06 
 
 1.38 
 
 1.26 
 
 Run-off 
 (total in 
 acre-feet). 
 
 2.98 
 26.40 
 19.10 
 38.70 
 65.20 
 82.10 
 77.50 
 
 504.00 
 
 Discharge measurements at station No. 59 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Aug. 20. 
 Sept. 28. 
 
 Gage 
 height. 
 
 Feet. 
 0.71 
 .58 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 0.14 
 
 
 Date. 
 
 Nov. 7. 
 Dec. 11 
 
 Gage 
 height. 
 
 Feet. 
 0.74 
 .74 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 0.9: 
 
 .43 
 
 Note. — Bed of stream sand, gravel, and small cobbles; shifting. One channel at all stages. 
 
316 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 59 at 2,700-foot level, near Eilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofi, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.51 
 
 0.70 
 .81 
 
 
 
 
 
 
 2 
 
 
 
 0.86 
 .80 
 .72 
 
 .72 
 
 .68 
 .75 
 
 
 
 0.61 
 
 1.25 
 
 .82 
 
 .81 
 
 ----- 
 
 .70 
 .72 
 .76 
 
 .... ... 
 
 "".'76' 
 .83 
 
 
 6.72 
 
 
 
 3 
 
 
 
 0.79 
 .98 
 
 .88 
 
 .88 
 
 
 
 
 
 4 
 
 
 (o) 
 
 (a) 
 
 <°) 
 
 (a) 
 
 (a) 
 
 («) 
 
 0.72 
 .60 
 .50 
 
 .46 
 .41 
 
 
 
 
 "6.' 90* 
 
 .87 
 
 1.00 
 
 .81 
 
 .80 
 
 .75 
 
 ' .84 
 .79 
 .81 
 .72 
 
 .79 
 .75 
 .71 
 .70 
 
 .71 
 
 .68 
 
 .68 
 .64 
 .62 
 
 "".hY 
 
 .64 
 .75 
 .72 
 .76 
 
 .74 
 
 """."83" 
 
 .89 
 
 1.02 
 
 ""."99" 
 
 ""."95* 
 
 .82 
 
 .80 
 "".'98" 
 
 
 
 5 
 
 0.62 
 
 .62 
 .62 
 .64 
 
 1.16 
 
 .49 
 
 .85 
 
 .71 
 
 .78 
 
 "\*72* 
 
 0.83 
 
 ....... 
 
 .75 
 .96 
 
 '".*92" 
 .91 
 
 .82 
 
 .77 
 
 1.06 
 
 1.28 
 .92 
 .95 
 
 .87 
 
 .84 
 .83 
 .90 
 
 "".'78' 
 
 .75 
 .72 
 
 .88 
 .87 
 
 .77 
 
 0.93 
 
 6 
 
 .75 
 
 7 
 
 .78 
 
 8 
 
 
 
 .50 
 
 .83 
 
 9 
 
 .81 
 
 .78 
 
 .82 
 
 .91 
 
 1.06 
 
 1.19 
 
 
 
 .80 
 
 10 
 
 
 .86 
 
 .88 
 .85 
 .84 
 .90 
 .93 
 
 .78 
 
 
 .78 
 
 11 
 
 .62 
 .62 
 .60 
 .60 
 .54 
 
 .49 
 
 
 .99 
 
 .73 
 
 12 
 
 .66 
 
 
 .70 
 
 13. 
 
 
 .80 
 .90 
 
 .69 
 
 14 
 
 
 .60 
 
 .70 
 
 15 
 
 .71 
 
 16 
 
 .68 
 
 .63 
 
 
 .82 
 
 17 
 
 .84 
 
 1.21 
 
 .81 
 
 .79 
 
 .92 
 .73 
 
 .77 
 
 
 .88 
 
 .70 
 
 .76 
 
 18 
 
 
 .84 
 
 .85 
 .88 
 
 .94 
 
 .90 
 
 .90 
 
 1.05 
 
 .55 
 
 
 .70 
 
 19 
 
 .48 
 .45 
 
 .45 
 .44 
 .42 
 .42 
 .41 
 
 .41 
 .42 
 .38 
 
 (a) 
 
 (a) 
 
 
 
 
 .70 
 .69 
 
 .79 
 
 .82 
 
 20 
 
 
 .69 
 
 .95 
 
 21 
 
 .68 
 
 .69 
 .70 
 .65 
 .64 
 
 .61 
 .60 
 .59 
 .59 
 
 .84 
 
 22 
 
 .61 
 
 
 
 1.08 
 
 23 
 
 
 
 .64 
 .64 
 .62 
 
 .60 
 .70 
 
 
 24 
 
 .62 
 
 
 
 .81 
 
 25 
 
 .85 
 .71 
 
 .80 
 
 .79 
 .76 
 .69 
 .66 
 .72 
 
 
 .76 
 
 .74 
 .62 
 .70 
 .71 
 .68 
 .64 
 
 .87 
 
 26 
 
 1.22 
 1.16 
 1.15 
 
 .57 
 """."55' 
 
 .78 
 .88 
 .78 
 
 .86 
 
 27 
 
 
 23 
 
 .82 
 
 2} 
 
 .81 
 
 31 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a 
 
 Channe 
 
 ldry. 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 59 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.05 
 .11 
 .18 
 .36 
 .56 
 
 .84 
 1.53 
 2.70 
 1.66 
 
 .92 
 
 0.11 
 .11 
 .05 
 .10 
 .10 
 
 .10 
 .10 
 .17 
 .20 
 .17 
 
 11 . 
 
 0.92 
 .60 
 .44 
 .28 
 .28 
 
 .24 
 .24 
 .20 
 .20 
 .17 
 
 0.48 
 .20 
 
 1.08 
 .60 
 .60 
 
 .60 
 
 .76 
 
 1.00 
 
 1.24 
 
 1.53 
 
 0.12 
 
 .40 
 
 1.00 
 
 2.05 
 
 10.20 
 
 2.57 
 2.96 
 1.92 
 2.96 
 2.96 
 
 21 
 
 0.12 
 .11 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 1.32 
 1.24 
 1.16 
 
 1.08 
 1.00 
 
 .36 
 .28 
 .24 
 
 .17 
 .12 
 
 1.24 
 
 2..." 
 
 
 12 
 
 22 
 
 1.08 
 
 3 
 
 
 13 
 
 23 
 
 1.08 
 
 4 
 
 
 14 
 
 24 
 
 .76 
 
 5 
 
 
 15 
 
 25. . 
 
 .60 
 
 6 
 
 
 16 «... 
 
 26. 
 
 .56 
 
 7 
 
 
 17... 
 
 27... 
 
 .52 
 
 8 
 
 
 18 
 
 28 
 
 29 
 
 .52 
 
 9 
 
 
 19 
 
 20 
 
 .76 
 
 10 
 
 1.32 
 
 30 
 
 .68 
 
 
 
 31 
 
 .60 
 
 
 
 
ISLAND OF HAWAII. 
 
 317 
 
 Daily discharge, in second-feet, at station No. 59 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 («) 
 
 (a) 
 
 (a) 
 
 0.30 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .20 
 
 2.00 
 5.00 
 6.00 
 3.00 
 1.00 
 
 .25 
 .10 
 .10 
 .10 
 
 0.60 
 
 1.10 
 
 .60 
 
 .30 
 
 .30 
 
 .20 
 .40 
 .50 
 .70 
 ^50 
 
 .80 
 1.55 
 3.50 
 5.20 
 3.00 
 
 1.60 
 
 .90 
 
 5.45 
 
 .70 
 
 .55 
 
 1.65 
 .30 
 .50 
 .50 
 .60 
 
 .55 
 .45 
 .20 
 .15 
 .30 
 2.50 
 
 1.00 
 
 .80 
 
 .55 
 
 2.40 
 
 1.25 
 
 1.25 
 4.00 
 3.00 
 2.50 
 1.10 
 
 1.25 
 
 1.00 
 
 .90 
 
 1.40 
 
 1.80 
 
 1.50 
 2.20 
 .90 
 1.00 
 1.25 
 
 1.90 
 1.40 
 1.40 
 3.35 
 4.40 
 
 5.60 
 4.80 
 4.65 
 3.00 
 2.00 
 
 2.00 
 2.00 
 3.00 
 4.00 
 4.80 
 
 3.50 
 
 2.00 
 
 1.00 
 
 .80 
 
 .50 
 
 .30 
 .15 
 .15 
 .20 
 .20 
 
 .20 
 .10 
 .05 
 .05 
 .05 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 "6.05" 
 
 .10 
 
 "".'26' 
 
 .50 
 
 1.25 
 
 .50 
 
 0.20 
 .70 
 2.50 
 1.50 
 1.00 
 
 .25 
 .50 
 .40 
 .30 
 .30 
 
 2.60 
 1.50 
 .60 
 1.40 
 1.30 
 
 1.30 
 
 1.25 
 
 .60 
 
 .20 
 
 .20 
 
 .20 
 .30 
 .30 
 .40 
 
 .45 
 
 .35 
 .10 
 .20 
 .25 
 .15 
 .10 
 
 0.10 
 .05 
 
 6.00 
 .75 
 .70 
 
 .40 
 .35 
 .20 
 .30 
 .45 
 
 .40 
 .25 
 .40 
 
 .45 
 
 .85 
 
 .30 
 .20 
 .40 
 .55 
 .30 
 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .20 
 .20 
 .10 
 .10 
 .10 
 
 0.80 
 1.00 
 2.50 
 4.00 
 1.40 
 
 1.15 
 
 2.70 
 
 .70 
 
 .60 
 
 .50 
 
 .40 
 .90 
 .55 
 .70 
 .30 
 
 .55 
 .40 
 .25 
 .20 
 .20 
 
 .20 
 .20 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .20 
 
 0.20 
 .30 
 .30 
 .25 
 .15 
 
 .15 
 .10 
 .10 
 .10 
 .15 
 
 .10 
 .40 
 .30 
 .45 
 .40 
 
 .35 
 1.30 
 
 .85 
 1.30 
 2.95 
 
 2.80 
 2.60 
 3.00 
 2.05 
 .75 
 
 .60 
 6.00 
 4.00 
 4.00 
 2.45 
 2.00 
 
 2.00 
 2.50 
 3.00 
 1.00 
 
 .85 
 
 "\*35" 
 
 .40 
 
 2.20 
 
 5.00 
 
 2.50 
 
 1.65 
 
 1.55 
 
 .75 
 
 .50 
 
 3.50 
 6.40 
 1.65 
 2.05 
 1.15 
 
 .90 
 
 .85 
 
 1.40 
 
 1.00 
 
 .50 
 
 .40 
 
 .30 
 
 1.25 
 
 1.15 
 
 .50 
 
 2.00 
 
 2 
 
 
 3.00 
 
 3 
 
 
 2.00 
 
 4. 
 
 
 2.00 
 
 5 
 
 0.10 
 
 .10 
 .10 
 .10 
 
 1.80 
 
 6.. 
 
 .40 
 
 7 
 
 .50 
 
 8 
 
 .85 
 
 9. 
 
 .60 
 
 10.... 
 
 
 .50 
 
 11 
 
 .10 
 .10 
 .05 
 
 .30 
 
 12 
 
 .20 
 
 13 
 
 .20 
 
 
 .20 
 
 15 
 
 .25 
 
 16 
 
 
 .75 
 
 
 
 .45 
 
 18 
 
 
 .20 
 
 
 
 .75 
 
 20 
 
 
 2.05 
 
 21 
 
 
 .90 
 
 22. 
 
 
 3.7,5 
 5.00 
 
 23 
 
 
 
 
 .70 
 
 25 
 
 
 1.15 
 
 26 
 
 1.10 
 
 
 .90 
 
 28 
 
 
 .75 
 
 
 
 .70 
 
 30 
 
 
 .50 
 
 
 
 
 .50 
 
 
 
 
 
 a Channel dry. 
 
 NoTE.r— Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
 near station No. 50. 
 
 Monthly discharge at station No. 59 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 October 10-31.... 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 discharge 
 in second- 
 feet. 
 
 0.26 
 
 .77 
 1.18 
 
 .05 
 
 .63 
 
 1.16 
 
 2.12 
 
 .83 
 
 Run-off 
 (total in 
 acre-feet). 
 
 11.20 
 45.40 
 72.70 
 
 3.07 
 36.20 
 71.30 
 126.00 
 51.00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.15 
 
 .69 
 
 .48 
 
 .70 
 
 1.30 
 
 1.58 
 
 1.13 
 
 .90 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 8.93 
 42.40 
 29.50 
 41.70 
 79.90 
 94.00 
 69.50 
 
 654.00 
 
318 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements at station No. 60 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 0.55 
 .34 
 
 Sec.-ft. 
 0.03 
 
 
 Nov.7 
 
 Feet. 
 0.56 
 .54 
 
 Sec.-ft. 
 0.04 
 
 Sept. 28 
 
 Dec. 11 
 
 .03 
 
 
 
 
 Note. — Bed of stream sand, gravel, and small cobbles; probably shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 60 at 2,700-foot level ^near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayefi , Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 
 
 
 
 
 
 0.36 
 
 0.51 
 .59 
 
 
 
 
 
 
 2. . 
 
 
 
 0.65 
 .68 
 .66 
 .60 
 
 .55 
 .61 
 
 
 
 0.48 
 .89 
 .66 
 .63 
 
 """.■59" 
 .55 
 .50 
 .60 
 
 "".*50" 
 
 "".60 
 
 .66 
 
 
 0.50 
 
 
 
 3 
 
 
 
 0.66 
 .86 
 .66 
 
 .69 
 
 
 
 
 
 4 
 
 
 (a) 
 (a) 
 
 («) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 0.50 
 .45 
 .40 
 
 .32 
 (») 
 
 
 
 
 "6." 66* 
 
 .63 
 .71 
 .60 
 
 .58 
 
 .55 
 .61 
 .68 
 .60 
 .53 
 
 .61 
 .55 
 .52 
 .50 
 
 .54 
 .50 
 
 .50 
 
 .48 
 .46 
 
 """."48" 
 
 .44 
 
 .58 
 .47 
 .58 
 
 .58 
 
 '""."66" 
 .66 
 .76 
 
 '"."72" 
 
 """."68" 
 .59 
 
 .60 
 
 """."78" 
 
 
 
 5_. 
 
 0.44 
 
 .44 
 .44 
 .45 
 
 0.93 
 
 .35 
 
 .62 
 
 .56 
 .55 
 
 "".*58" 
 
 0.62 
 
 "".*56" 
 .60 
 
 .72 
 
 "*\'70" 
 
 .66 
 .60 
 .50 
 
 .75 
 .84 
 .71 
 .70 
 .65 
 
 .64 
 .64 
 .68 
 
 """."eo" 
 
 .59 
 .58 
 .69 
 .67 
 .60 
 
 0.49 
 
 6 
 
 .54 
 
 7. 
 
 .58 
 
 8 
 
 
 
 .41 
 
 .42 
 
 9 
 
 .64 
 .62 
 
 .70 
 
 .70 
 
 .96 
 
 1.03 
 
 
 
 .60 
 
 10 
 
 
 .69 
 
 .68 
 .65 
 .66 
 .61 
 .60 
 
 .56 
 
 
 .59 
 
 11 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 
 .71 
 
 .56 
 
 12. 
 
 .51 
 
 
 .50 
 
 13. 
 
 
 .61 
 .69 
 
 .48 
 
 14.^.... 
 
 
 .51 
 
 .50 
 
 15. 
 
 .52 
 
 16 
 
 .41 
 
 .50 
 
 
 .64 
 
 17. 
 
 .64 
 
 1.05 
 
 .66 
 
 .70 
 
 .62 
 .61 
 .63 
 
 
 .64 
 
 .55 
 
 .59 
 
 18. 
 
 
 .66 
 .66 
 .68 
 
 .69 
 .75 
 .73 
 
 .81 
 
 .39 
 
 
 .52 
 
 19. 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 
 
 .58 
 .56 
 
 .60 
 
 .61 
 
 20. . 
 
 
 .58 
 
 .75 
 
 21 
 
 .51 
 
 .48 
 .48 
 .45 
 .42 
 
 .40 
 .38 
 .34 
 .34 
 
 .67 
 
 22 
 
 .46 
 
 
 
 .85 
 
 23 
 
 
 
 .48 
 .48 
 .44 
 
 .40 
 .50 
 
 
 24.. 
 
 .51 
 
 
 
 .80 
 
 25 
 
 .60 
 .52 
 
 .64 
 
 .62 
 .61 
 .56 
 .53 
 
 .56 
 
 
 .61 
 
 .67 
 .55 
 .51 
 .57 
 .54 
 .50 
 
 .64 
 
 26 
 
 .98 
 .89 
 .85 
 
 .40 
 ""*."39* 
 
 .58 
 .70 
 .58 
 
 .64 
 
 27 
 
 
 28 
 
 .6i 
 
 
 .63 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 60 at 
 
 for 1911. 
 
 ,7 00-foot level, near Hilo, Hawaii, 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 j 
 
 
 0.01 
 .01 
 .05 
 .10 
 .10 
 
 .26 
 .50 
 .68 
 .50 
 .38 
 
 0.01 
 .01 
 .01 
 .01 
 .01 
 
 .01 
 .01 
 .01 
 .05 
 .01 
 
 11 
 
 0.14 
 .10 
 .10 
 .03 
 .03 
 
 .03 
 .03 
 .05 
 .05 
 .03 
 
 0.22 
 .10 
 .30 
 .22 
 
 .18 
 
 .14 
 .14 
 .14 
 .50 
 .98 
 
 0.01 
 
 .14 
 
 .74 
 
 1.66 
 
 6.02 
 
 2..50 
 2.90 
 2.50 
 2.90 
 2.90 
 
 21 
 
 0.01 
 .01 
 .01 
 .01 
 .01 
 
 .01 
 .01 
 .01 
 .01 
 .01 
 .01 
 
 0.86 
 .80 
 .74 
 .68 
 .62 
 
 .14 
 .02 
 .02 
 .01 
 .01 
 
 1.66 
 
 2 
 
 
 12 
 
 22 
 
 1.52 
 
 3 
 
 
 13 
 
 23 
 
 .62 
 
 4 
 
 
 14 
 
 24 
 
 1.38 
 
 5 
 
 
 15 
 
 25 
 
 1.04 
 
 6 
 
 
 16 
 
 26 
 
 .56 
 
 7 
 
 
 17 
 
 27 
 
 .42 
 
 8 
 
 
 18 
 
 28... 
 
 .42 
 
 9 
 
 
 19 
 
 29 
 
 .62 
 
 10 
 
 0.30 
 
 20 
 
 30 
 
 .56 
 
 
 
 31 
 
 .50 
 
 
 
 
ISLAND OF HAWAII. 
 
 319 
 
 Daily discharge, in second-feet, at station No. 60 at 2,700-foot level, near Eilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 (a) 
 
 (a) 
 (a) 
 
 («) 
 (a) 
 (a) 
 
 (a) 
 
 n 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 (») 
 (») 
 (a) 
 
 0.1 
 
 0.30 
 .30 
 .40 
 .30 
 .10 
 
 .05 
 .10 
 .20 
 .30 
 .20 
 
 .50 
 
 .50 
 
 2.20 
 
 2.70 
 
 1.00 
 
 .50 
 .30 
 2.90 
 .30 
 .50 
 
 .20 
 .10 
 .20 
 .20 
 .30 
 
 .20 
 .10 
 .10 
 .10 
 .10 
 2.00 
 
 0.80 
 .50 
 .30 
 
 1.50 
 
 .50 
 2.50 
 2.00 
 1.50 
 
 .50 
 
 .30 
 .30 
 .10 
 .10 
 
 .20 
 .40 
 .30 
 .30 
 .40 
 
 .50 
 
 .80 
 
 .70 
 
 1.20 
 
 1.80 
 
 2.40 
 1.70 
 1.40 
 
 2.00 
 
 ,10 
 
 0.10 
 
 .10 
 .50 
 .10 
 
 0.10 
 .10 
 .30 
 .20 
 .20 
 
 .10 
 .05 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 
 1.70 
 .30 
 .20 
 
 .10 
 .10 
 .05 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .30 
 
 .05 
 .05 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.80 
 1.00 
 1.50 
 2.00 
 
 .20 
 .60 
 .10 
 .10 
 .10 
 
 .05 
 .10 
 .40 
 .10 
 .10 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .C5 
 .05 
 .05 
 .05 
 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .70 
 .30 
 .30 
 .90 
 
 1.10 
 .60 
 
 1.50 
 .40 
 .10 
 
 .10 
 3.30 
 2.00 
 2.00 
 1.00 
 
 .70 
 
 1.00 
 1.00 
 2.00 
 1.00 
 .20 
 
 .10 
 .10 
 .10 
 .60 
 2.50 
 
 2.00 
 .50 
 .30 
 .10 
 
 ..10 
 
 .80 
 1.40 
 .60 
 .50 
 .30 
 
 .30 
 .30 
 .40 
 .20 
 .10 
 
 .10 
 .10 
 .50 
 .40 
 .10 
 
 0.70 
 
 1.00 
 
 .50 
 
 .20 
 
 .10 
 
 .10 
 .10 
 .20 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .30 
 .10 
 .10 
 .10 
 
 .40 
 1.40 
 3.00 
 1.10 
 
 .30 
 .20 
 .10 
 .20 
 .10 
 .10 
 
 a Channel dry. 
 
 Dis- 
 charge for days for which gage heights are missing estimated "from diagram prepared from record of daily 
 
 Note. — Daily discharge determined from rating curve fairly well denned except for flood stages, 
 large for days for which gage heigh 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 60 at 2,700- foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 discharge 
 in second- 
 
 Run-off 
 (total in 
 acre-feet). 
 
 Month. 
 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 1911 
 October 10-31.... 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 0.05 
 
 .31 
 
 1.02 
 
 1.98 
 18.70 
 62.90 
 
 .01 
 .05 
 .56 
 .83 
 .20 
 
 .61 
 
 2.88 
 34.40 
 49.40 
 12.30 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 0.10 
 .18 
 .16 
 .28 
 .54 
 .59 
 .39 
 
 .32 
 
 5.95 
 11.10 
 
 9.84 
 16.70 
 33.20 
 35.10 
 24.00 
 
 235. 00 
 
 Discharge measurements at station No. 61 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 (E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 0.33 
 .20 
 
 Sec.-ft 
 
 
 Nov. 7 
 
 Feet. 
 0.21 
 .24 
 
 Sec.-ft. 
 0.01 
 
 Sept. 21 
 
 Dec. 11 
 
 .01 
 
 
 
 
 
 Note. — Bed of stream of silt and sand; shifting. One channel at all stages. 
 
320 
 
 WATER RESOURCES OF HAWAII, 1912 
 
 Daily gage height, in feet, at station JSo. 61 at 2,700-foot level, near Eilo, Hawaii, for 
 
 1912. 
 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.30 
 
 0.35 
 
 .47 
 
 
 
 
 
 
 2 
 
 
 
 0.42 
 .40 
 .62 
 .35 
 
 .31 
 .35 
 
 
 
 0.30 
 .60 
 
 
 0.30 
 
 
 
 3 
 
 
 
 0.44 
 .39 
 
 .58 
 
 .60 
 
 
 
 
 
 4 
 
 
 (a) 
 
 
 
 
 .43 
 
 .42 
 
 """"38" 
 .35 
 .37 
 .38 
 
 ""."36' 
 
 ""."37" 
 
 .40 
 
 "6." 42' 
 
 .41 
 .30 
 .40 
 .39 
 
 .34 
 .39 
 .39 
 .40 
 .35 
 
 .38 
 .35 
 .32 
 .30 
 
 .32 
 
 .35 
 
 .28 
 .28 
 .26 
 
 ""."36" 
 
 .34 
 .34 
 .32 
 .34 
 
 .34 
 
 ""."38" 
 .40 
 .50 
 
 ""."48" 
 
 """."44" 
 .36 
 
 .40 
 
 ""."si" 
 
 
 
 5 
 
 0.35 
 
 .35 
 .35 
 
 .38 
 
 1.25 
 
 .28 
 
 .50 
 
 .39 
 .40 
 
 "".'38" 
 
 0.35 
 
 ""."2i" 
 .22 
 .41 
 
 """."io" 
 .45 
 .28 
 .24 
 
 .44 
 .55 
 .44 
 .39 
 .30 
 
 .30 
 .29 
 .34 
 
 """."25" 
 
 .25 
 .24 
 .38 
 .34 
 .27 
 
 24 
 
 6 
 
 22 
 
 7 
 
 22 
 
 8 
 
 
 
 .29 
 
 28 
 
 9. 
 
 .40 
 .40 
 
 .48 
 .46 
 .79 
 .79 
 
 
 
 28 
 
 10 
 
 
 
 50 
 
 .44 
 .40 
 .48 
 .40 
 .46 
 
 82 
 
 
 24 
 
 11 
 
 (a) 
 
 
 
 .44 
 
 .22 
 
 12 
 
 .ei 
 
 
 .21 
 
 13 
 
 
 0.46 
 .40 
 .30 
 
 (a) 
 
 
 .39 
 
 .41 
 
 20 
 
 14 
 
 
 
 .40 
 
 .21 
 
 15 
 
 
 .22 
 
 16 
 
 
 .35 
 
 .40 
 
 
 .29 
 
 17 
 
 
 .43 
 
 .81 
 .43 
 .46 
 
 .44 
 .52 
 .44 
 
 
 .42 
 
 .33 
 
 .22 
 
 18 
 
 
 
 .46 
 .52 
 .53 
 
 .57 
 .49 
 
 .47 
 .60 
 
 .31 
 
 
 .20 
 
 19 
 
 (a) 
 
 
 
 .34 
 .32 
 
 .39 
 
 .30 
 
 20 
 
 
 .28 
 
 .46 
 
 21 
 
 
 
 .31 
 
 .29 
 .29 
 .28 
 .24 
 
 .22 
 .22 
 .21 
 .21 
 
 .40 
 
 22 
 
 
 
 .30 
 
 
 
 .53 
 
 23 
 
 
 
 .30 
 .30 
 .29 
 
 .28 
 .31 
 
 
 24 
 
 
 
 .31 
 
 
 
 .61 
 
 25 
 
 
 .40 
 .33 
 
 .41 
 
 .40 
 .38 
 .30 
 .30 
 
 .47 
 
 
 .39 
 
 .35 
 .26 
 .31 
 .35 
 .28 
 .21 
 
 .40 
 
 26 
 
 
 .76 
 1.06 
 1.03 
 
 .30 
 "".'28' 
 
 .31 
 .41 
 .31 
 
 .50 
 
 27 
 
 
 
 28 
 
 
 
 .30 
 
 29.... 
 
 
 
 .32 
 
 30 
 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 Monthly discharge at station No. 61 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May , 
 
 discharge 
 in second- 
 feet. 
 
 a 0.06 
 a. 08 
 o.l5 
 
 0.000 
 .005 
 .17 
 .32 
 
 Run-off 
 (total in 
 acre-feet). 
 
 3.69 
 4.76 
 9.22 
 
 .00 
 
 .30 
 
 10.70 
 
 18.80 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 07 
 .10 
 .10 
 .12 
 .16 
 .15 
 .11 
 
 ,12 
 
 Run-off 
 (total in 
 acre-feet). 
 
 4.00 
 6.00 
 6.10 
 6.90 
 9.90 
 8.90 
 6.90 
 
 83.40 
 
 a Estimated. 
 
 Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
 fall record at camp near station No. 50. 
 
ISLAND OF HAWAII. 
 
 321 
 
 Discharge measurements at station No. 62 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Aug. 20. 
 Sept. 28. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Feet. 
 1.19 
 .84 
 
 Sec.-ft. 
 
 Date. 
 
 Nov. 7.. 
 Dec. 11. 
 
 Gage 
 height. 
 
 Feet. 
 1.25 
 1.23 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 4.66 
 3.64 
 
 Note.— Bed of stream of cobbles and bowlders. Some bedrock exposed. Section rough near gage; 
 station probably permanent. One channel at all stages. 
 
 Daily gageheight, in feet, at station No. 62 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.90 
 
 1.28 
 1.37 
 
 
 
 
 
 
 2. . 
 
 
 
 1.55 
 1.40 
 1.25 
 1.08 
 
 1.15 
 1.21 
 
 
 
 0.92 
 2.60 
 1.55 
 1.35 
 
 *"i.'l8' 
 1.14 
 1.18 
 1.21 
 
 "Tii" 
 
 "i.'30* 
 1.57 
 
 
 1.11 
 
 
 
 3. . 
 
 
 
 1.51 
 1.58 
 1.50 
 
 1.47 
 
 
 
 
 
 4 . 
 
 
 "W 
 
 (a) 
 
 (a) 
 (a) 
 1.15 
 1.10 
 .90 
 
 
 
 
 *"i.'6o' 
 
 1.61 
 2.01 
 1.41 
 1.33 
 
 1.25 
 1.46 
 1.28 
 1.25 
 1.23 
 
 1.34 
 1.20 
 1.18 
 1.10 
 
 1.20 
 1.10 
 
 1.08 
 1.02 
 1.00 
 
 "Tii" 
 
 1.10 
 1.42 
 1.20 
 1.36 
 
 1.34 
 
 "L62* 
 1.72 
 2.32 
 
 "i.*86" 
 
 "i.92* 
 1.34 
 
 1.21 
 "2." 16* 
 
 
 
 5 
 
 1.02 
 
 1.02 
 1.02 
 1.05 
 
 1.84 
 
 .89 
 
 1.40 
 
 1.28 
 1.31 
 
 "i.'20' 
 
 1.54 
 
 "i.'25" 
 1.30 
 
 1.82 
 
 "i."78* 
 1.80 
 1.43 
 1.29 
 
 2.14 
 2.72 
 1.80 
 
 1.87 
 1.49 
 
 1.46 
 1.50 
 1.56 
 
 "T32' 
 
 1.26 
 1.21 
 
 1.48 
 1.66 
 1.30 
 
 1.35 
 
 6 
 
 1.30 
 
 7 .. 
 
 1.40 
 
 8 
 
 
 
 .88 
 
 1.60 
 
 9 . 
 
 1.46 
 1.40 
 
 1.41 
 1.79 
 
 1.87 
 1.99 
 
 
 
 1.45 
 
 10 
 
 
 1.85 
 
 1.75 
 1.59 
 1.52 
 . 1.35 
 1.29 
 
 1.40 
 
 
 1.30 
 
 11. 
 
 .94 
 .94 
 .92 
 .92 
 
 .85 
 
 .80 
 
 
 1.94 
 
 1.16 
 
 12 
 
 1.12 
 
 
 1.16 
 
 13 
 
 
 1.33 
 1.68 
 
 1.10 
 
 14 
 
 
 .91 
 
 1.11 
 
 15 
 
 1.30 
 
 16 
 
 .98 
 
 .92 
 
 
 1.50 
 
 17 
 
 
 1.76 
 1.96 
 1.49 
 1.86 
 
 1.45 
 1.41 
 1.47 
 
 
 1.67 
 
 1.15 
 
 1.40 
 
 18. 
 
 
 
 1.39 
 1.40 
 1.41 
 
 1.42 
 1.64 
 1.62 
 1.71 
 
 .90 
 
 
 1.20 
 
 19 
 
 .75 
 
 .74 
 
 .74 
 .72 
 .71 
 .71 
 .70 
 
 .70 
 .71 
 .66 
 
 .65 
 
 
 
 1.15 
 1.14 
 
 1.36 
 
 1.50 
 
 20 
 
 
 1.01 
 
 2.15 
 
 21 
 
 1.09 
 
 1.01 
 1.05 
 1.00 
 
 .98 
 
 .91 
 
 .87 
 .84 
 .81 
 
 1.62 
 
 22 
 
 1.02 
 
 
 
 2.42 
 
 23 
 
 
 
 1.00 
 1.04 
 1.02 
 
 .96 
 1.35 
 
 
 24 
 
 1.14 
 
 
 
 2.82 
 
 25 
 
 1.50 
 1.30 
 
 1.36 
 
 1.30 
 1.15 
 1.13 
 
 1.19 
 
 
 1.21 
 
 1.19 
 
 1.25 
 1.17 
 1.15 
 
 1.08 
 1.01 
 
 1.80 
 
 26 
 
 1.70 
 
 1.66 
 1.68 
 
 .99 
 """."95' 
 
 1.58 
 1.70 
 1.58 
 
 2.40 
 
 27 
 
 
 28 
 
 1.36 
 
 
 1.32 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 62 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.38 
 2.62 
 4.60 
 7.80 
 12.00 
 
 16.80 
 26.20 
 40.60 
 28.00 
 18.00 
 
 1.38 
 1.38 
 1.20 
 1.20 
 1.20 
 
 1.29 
 
 1.38 
 2.23 
 3.40 
 2.23 
 
 11 
 
 10.20 
 7.20 
 5.00 
 3.40 
 3.40 
 
 3.60 
 3.60 
 3.80 
 3.80 
 3.01 
 
 10.20 
 4.40 
 12.80 
 11.30 
 9.84 
 
 8.40 
 11.30 
 14.00 
 19.60 
 26.20 
 
 1.92 
 
 7.80 
 
 19.20 
 
 35.80 
 
 85.00 
 
 34.00 
 46.00 
 35.80 
 47.80 
 48.40 
 
 21 
 
 2.36 
 2.10 
 1.92 
 1.74 
 1.56 
 
 1.38 
 
 1.20 
 
 1.05 
 
 .90 
 
 .80 
 
 .70 
 
 24.50 
 23.00 
 22.00 
 21.00 
 20.00 
 
 12.00 
 9.12 
 3.40 
 2.62 
 1.38 
 
 22.50 
 
 2 
 
 
 12 
 
 22 
 
 3.40 
 
 3 
 
 
 13... 
 
 23 
 
 3.40 
 
 4 
 
 
 14 
 
 24 
 
 22.50 
 
 5 
 
 
 15 
 
 25 
 
 12.80 
 
 6 
 
 
 16... 
 
 26 
 
 8.40 
 
 7 
 
 
 17.. 
 
 27 
 
 5.40 
 
 8 
 
 
 18 
 
 28 
 
 5.00 
 
 9 
 
 
 19 
 
 29 
 
 12.80 
 
 10 
 
 13.60 
 
 20 
 
 30 
 
 12.40 
 
 
 
 31 
 
 12.00 
 
 
 
 
 14694°— wsp 336—14 21 
 
322 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 62 at 2,700-foot level, near Kilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7. 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16. 
 17 
 
 18. 
 19 
 20. 
 
 21. 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 Jan. 
 
 1.40 
 1.40 
 1.40 
 1.40 
 1.40 
 
 1.40 
 1.40 
 1.60 
 1.40 
 1.20 
 
 .90 
 .80 
 .80 
 .50 
 
 .35 
 .30 
 .30 
 .25 
 .25 
 
 .25 
 .20 
 .15 
 .15 
 .15 
 
 .15 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 Feb. 
 
 (a) 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 (a) 
 2.75 
 2.10 
 .70 
 
 .10 
 .10 
 .10 
 .10 
 10.00 
 
 40.00 
 80.00 
 90.00 
 50.00 
 12.00 
 
 5.40 
 4.00 
 4.00 
 4.00 
 
 Mar. 
 
 6.00 
 12.00 
 8.40 
 4.40 
 1.90 
 
 2.75 
 3.60 
 7.00 
 11.00 
 8.40 
 
 24.00 
 29.00 
 36.00 
 30.00 
 
 26.00 
 23.00 
 35.00 
 11.60 
 29.00 
 
 10.00 
 8.80 
 
 11.00 
 9.00 
 7.20 
 
 5.40 
 2.75 
 2.50 
 2.20 
 3.30 
 36.00 
 
 Apr. 
 
 20.00 
 15.00 
 12.00 
 12.00 
 12.00 
 
 11.00 
 60.00 
 50.00 
 40.00 
 28.00 
 
 22.00 
 16.00 
 13.00 
 6.90 
 5.20 
 
 8.00 
 12.00 
 8.10 
 8.40 
 8.80 
 
 9.10 
 
 18.00 
 17.00 
 20.00 
 20.00 
 
 20.00 
 18.00 
 19.00 
 15.00 
 18.00 
 
 May. 
 
 19.00 
 19.00 
 19.00 
 20.00 
 27.00 
 
 22.00 
 15.00 
 12.00 
 10.00 
 8.40 
 
 5.40 
 2.40 
 2.00 
 1.60 
 1.40 
 
 1.10 
 1.00 
 .70 
 1.00 
 1.00 
 
 1.00 
 1.40 
 4.00 
 2.60 
 2.00 
 
 1.15 
 1.00 
 .95 
 .90 
 .80 
 .70 
 
 June. 
 
 0.70 
 .70 
 .70 
 .70 
 .70 
 
 .65 
 .65 
 .65 
 .70 
 .70 
 
 .70 
 .70 
 .70 
 
 .75 
 .80 
 
 .80 
 .90 
 1.00 
 1.20 
 1.30 
 
 1.60 
 2.00 
 2.00 
 3.00 
 6.00 
 
 12.00 
 20.00 
 15.00 
 12.00 
 9.00 
 
 July. 
 
 3.60 
 7.50 
 15.00 
 11.00 
 8.40 
 
 5.00 
 5.70 
 4.50 
 3.40 
 3.40 
 
 33.00 
 15.00 
 6.30 
 19.00 
 14.00 
 
 12.00 
 19.00 
 10.00 
 2.75 
 2.60 
 
 3.00 
 3.00 
 3.00 
 3,00 
 3.60 
 
 3.30 
 4.40 
 3.00 
 2.75 
 1.90 
 1.30 
 
 Aug. 
 
 1.00 
 
 .80 
 
 73.00 
 
 14.00 
 
 6.50 
 
 5.00 
 3.15 
 2.60 
 3.10 
 3.60 
 
 3.10 
 2.60 
 4.50 
 5.40 
 15.00 
 
 3.00 
 2.75 
 5.00 
 7.20 
 3.00 
 
 2.00 
 1.60 
 1.20 
 1.60 
 1.40 
 
 1.00 
 6.90 
 6.00 
 5.00 
 4.00 
 5.00 
 
 Sept. 
 
 25.00 
 30.00 
 50.00 
 85.00 
 16.00 
 
 16.00 
 38.00 
 8.80 
 6.30 
 5.40 
 
 4.40 
 11.00 
 5.00 
 4.40 
 4.00 
 
 6.60 
 3.40 
 3.10 
 2.10 
 1.70 
 
 1.30 
 1.65 
 1.20 
 1.10 
 .90 
 
 .75 
 .60 
 .50 
 .40 
 5.00 
 
 Oct. 
 
 3.00 
 2.20 
 3.00 
 3.40 
 2.10 
 
 1.90 
 1.40 
 1.20 
 1.00 
 2.60 
 
 2.10 
 9.10 
 3.40 
 '7.20 
 7.00 
 
 6.60 
 35.00 
 17.00 
 21.00 
 56.00 
 
 60.00 
 29.00 
 85.00 
 32.00 
 
 3.60 
 •90.00 
 60.00 
 50.00 
 47.00 
 48.00 
 
 Nov. 
 
 50.00 
 60.00 
 40.00 
 70.00 
 14.00 
 
 10.00 
 
 4.40 
 
 5.40 
 
 26.00 
 
 60.00 
 
 50.00 
 24.00 
 25.00 
 9.50 
 5.20 
 
 45.00 
 80.00 
 25.00 
 29.00 
 12.00 
 
 11.00 
 12.00 
 14.00 
 10.00 
 6.00 
 
 4.60 
 3.60 
 11.00 
 18.00 
 5.40 
 
 Dec. 
 
 25.00 
 40.00 
 15.00 
 18.00 
 6.90 
 
 5.40 
 8.40 
 16.00 
 10.00 
 5.40 
 
 2.90 
 2.90 
 2.10 
 2.25 
 5.40 
 
 12.00 
 8.40 
 3.40 
 12.00 
 46.00 
 
 17.00 
 
 62.00 
 90.00 
 86.00 
 25.00 
 
 61.00 
 30.00 
 7.20 
 6.00 
 5.00 
 5.00 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from rating curve fairly well denned except for flood stag 
 charge for days for which gage heights are missing estimated from diagram prepared from recorc 
 rainfall at the camp near station No. 50. 
 
 ss. Dis- 
 of daily 
 
 Monthly discharge at station No. 62 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 10-31.... 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 discharge 
 in second- 
 feet. 
 
 3.46 
 14.20 
 16.10 
 
 .68 
 10.50 
 13.40 
 18.10 
 
 Run-off 
 (total in- 
 acre-feet). 
 
 152 
 
 847 
 
 41.80 
 604. 00 
 824. 00 
 ,080.00 
 
 Month. 
 
 1912— Continued. 
 
 May 
 
 June 
 
 July 
 
 August , 
 
 September 
 
 October ' 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 6.63 
 
 3.28 
 
 7.53 
 
 6.45 
 
 11.30 
 
 22.50 
 
 17.30 
 
 20.70 
 
 11.50 
 
 Run-off 
 (total in 
 acre-feet). 
 
 408.00 
 
 195.00 
 
 463.00 
 
 397.00 
 
 672.00 
 
 1,380.00 
 
 1,030.00 
 
 1,270.00 
 
 8,360.00 
 
 Discharge measurements at station No. 63 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 
 0.45 
 
 .40 
 
 Sec.-ft. 
 
 0.05 
 
 
 
 Nov. 7 
 
 Feet. 
 0.47 
 
 .48 
 
 Sec.-ft. 
 0.10 
 
 Sept. 28 . 
 
 Dec. 11 
 
 .03 
 
 
 
 
 Note. — Bed of stream of sand and silt; shifting. One channel at all stages. 
 
ISLAND OF HAW An. 
 
 323 
 
 Daily gage height, in feet, at station No. 63 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 
 
 
 
 
 
 0.40 
 
 0.42 
 .53 
 
 
 
 
 
 
 
 
 
 0.61 
 .52 
 
 .51 
 .48 
 
 .45 
 .48 
 
 
 
 0.45 
 
 
 0.46 
 
 
 
 
 
 
 0.50 
 .74 
 .54 
 
 .55 
 
 
 
 
 
 
 
 0.40 
 .40 
 
 "".40 
 
 .40 
 .40 
 
 .40 
 .40 
 .52 
 
 .42 
 
 .41 
 .40 
 
 
 
 
 .53 
 
 .57 
 
 "*."50" 
 .58 
 .50 
 .51 
 
 ""'."49" 
 
 ""\*50" 
 .53 
 
 "b'.'hi' 
 
 .54 
 .61 
 .50 
 .49 
 
 .44 
 .50 
 .50 
 .54 
 .51 
 
 .51 
 .49 
 .48 
 .46 
 
 .48 
 .46 
 
 .43 
 
 .42 
 
 .44 
 
 ------- 
 
 .43 
 .48 
 .46 
 .50 
 
 .49 
 
 """."52" 
 .57 
 .60 
 
 '"."58* 
 
 ""."54" 
 
 .48 
 
 .47 
 ""\*59* 
 
 
 
 5 
 
 0.51 
 
 .51 
 .51 
 .52 
 
 1.02 
 
 .30 
 
 .58 
 
 .45 
 .50 
 
 '"'."49" 
 
 0.52 
 
 ------- 
 
 .50 
 .62 
 
 """."54" 
 
 .55 
 .50 
 .48 
 
 .62 
 .64 
 .56 
 .55 
 .52 
 
 .52 
 .52 
 
 .58 
 
 0.50 
 
 6 
 
 .42 
 
 7 
 
 .59 
 
 g 
 
 
 
 .37 
 
 .52 
 
 9 
 
 .56 
 .55 
 
 .54 
 
 .52 
 
 
 
 .51 
 
 10 
 
 
 .55 
 
 .54 
 
 .57 
 .54 
 
 .51 
 
 .55 
 
 
 .49 
 
 11 
 
 .48 
 .48 
 .48 
 
 .50 
 
 .50 
 
 
 .60 
 
 .46 
 
 12 
 
 .50 
 
 
 .44 
 
 13 
 
 
 .50 
 .55 
 
 .44 
 
 
 
 .40 
 
 .44 
 
 15 
 
 .50 
 
 16 
 
 .45 
 
 .32 
 
 
 .56 
 
 
 .52 
 
 .91 
 .53 
 .55 
 
 .51 
 
 .48 
 .52 
 
 
 .54 
 
 .48 
 
 .49 
 
 18 
 
 
 .51 
 .59 
 .65 
 
 .64 
 .71 
 .71 
 .80 
 
 .43 
 
 
 .48 
 
 
 .50 
 .50 
 
 .50 
 .48 
 .46 
 .46 
 .45 
 
 .45 
 
 .45 
 .42 
 .40 
 .40 
 
 """."52" 
 
 .48 
 
 
 .48 
 .46 
 
 .50 
 
 .50 
 
 20 
 
 
 .40 
 
 .60 
 
 21 
 
 .44 
 
 .44 
 .46 
 .44 
 .42 
 
 .42 
 .42 
 .41 
 .41 
 
 .50 
 
 22 
 
 .45 
 
 
 
 .65 
 
 23 
 
 
 
 .45 
 .47 
 .45 
 
 .42 
 
 .48 
 
 
 
 .47 
 
 
 
 
 25... 
 
 
 .52 
 
 .51 
 
 .49 
 .44 
 .42 
 .49 
 
 
 .50 
 
 .50 
 .50 
 .49 
 .52 
 .50 
 .48 
 
 .50 
 
 .50 
 .48 
 .56 
 .55 
 .50 
 
 .51 
 
 26 
 
 .92 
 
 .88 
 .85 
 
 .48 
 "".'45' 
 
 .41 
 .55 
 .41 
 
 .60 
 
 27 
 
 
 28 
 
 .50 
 
 
 .52 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Monthly discharge at station No. 63 at 2,700-foot level, near Hilo, Hawaii, for 1911-1 
 
 Month. 
 
 October . . . 
 November. 
 December. 
 
 1911. 
 
 January.. 
 February. 
 March — 
 
 April 
 
 May 
 
 1912. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 o0.04 
 a. 10 
 o.l2 
 
 .002 
 
 .003 
 
 .01 
 
 .01 
 
 .006 
 
 Run-off 
 (total in 
 acre-feet). 
 
 2.46 
 5.95 
 7.38 
 
 .10 
 .20 
 .90 
 .90 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.005 
 .07 
 .08 
 .09 
 .12 
 .12 
 .10 
 
 0.30 
 4.60 
 5.00 
 5.30 
 7.50 
 6.90 
 6.10 
 
 38.20 
 
 a Estimated. 
 Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
 fall record at camp near station No. 50. 
 
 Discharge measurements at station No. 64 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage - 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Fe#. 
 0.58 
 .40 
 
 Sec.-ft. 
 0.01 
 
 
 Nov. 7.. 
 
 Feet. 
 0.08 
 .40 
 
 Sec.-ft. 
 0.03 
 
 Sept. 28 
 
 Dec. 11 
 
 .03 
 
 
 
 
 Note.— Bed of stream of sand and silt; shifting. One channel at all stages. 
 
324 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 64 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Deco 
 
 1 
 
 1 
 
 
 
 
 0.29 
 
 0.40 
 .51 
 
 
 
 
 
 
 2 
 
 1 
 
 0.56 
 .52 
 .44 
 .45 
 
 .45 
 .51 
 
 
 
 0.41 
 
 
 0.31 
 
 
 
 3 
 
 
 
 0.49 
 .69 
 .55 
 
 .60 
 
 
 
 
 
 4 
 
 
 0.00 
 .00 
 
 '"'."66" 
 
 .00 
 .00 
 
 .00 
 .00 
 .50 
 .45 
 .42 
 
 .36 
 .34 
 
 
 
 
 .59 
 
 .58 
 
 '""."49* 
 .46 
 .50 
 .51 
 
 '""."49" 
 
 ""so" 
 
 .52 
 
 '"6." 49" 
 
 .50 
 .54 
 .48 
 .46 
 
 .43 
 .49 
 .48 
 .53 
 .50 
 
 .50 
 .46 
 .30 
 .20 
 
 .42 
 .32 
 
 .30 
 .28 
 .31 
 
 ""."42' 
 
 .40 
 .48 
 .46 
 .50 
 
 .49 
 
 ""."56" 
 .50 
 .56 
 
 """."54" 
 
 "".'45" 
 .41 
 
 .42 
 ""."28" 
 
 
 
 5 
 
 0.34 
 
 .34 
 .34 
 .45 
 
 1.05 
 
 .20 
 
 .55 
 
 .44 
 .49 
 
 """.'46' 
 
 0.12 
 
 '"'.ik' 
 
 .16 
 .31 
 
 """."27* 
 .30 
 .14 
 .10 
 
 .57 
 .65 
 .40 
 .48 
 .36 
 
 .32 
 .36 
 
 .44 
 
 44 
 
 6 
 
 .41 
 
 7 
 
 .46 
 
 8 
 
 
 
 .24 
 
 .50 
 
 9 
 
 .51 
 
 .50 
 
 .51 
 .53 
 .64 
 
 .72 
 
 
 
 .50 
 
 10 
 
 
 -54 
 
 .53 
 .52 
 .52 
 .48 
 
 .48 
 
 .50 
 
 
 .48 
 
 11 
 
 .40 
 .40 
 .40 
 .40 
 .35 
 
 .25 
 
 
 .52 
 
 .39 
 
 12 
 
 .46 
 
 
 .31 
 
 13 
 
 
 .48 
 .50 
 
 .30 
 
 14 
 
 
 .30 
 
 .35 
 
 15 
 
 .40 
 
 16 
 
 .32 
 
 .24 
 
 
 .54 
 
 17 
 
 .51 
 .76 
 .51 
 .55 
 
 .51 
 .48 
 .52 
 
 
 .30 
 
 .48 
 
 .50 
 
 18... 
 
 
 .50 
 .52 
 .59 
 
 .61 
 .62 
 .62 
 
 .74 
 
 .35 
 
 
 .38 
 
 19 
 
 .05 
 .05 
 
 .05 
 .04 
 .02 
 .02 
 .00 
 
 .00 
 .00 
 .00 
 .00 
 .00 
 
 
 
 .20 
 .19 
 
 .49 
 
 .45 
 
 20 
 
 
 .40 
 
 .62 
 
 21 
 
 .44 
 
 .20 
 .30 
 .18 
 .09 
 
 .05 
 .03 
 .02 
 .02 
 
 .50 
 
 22 
 
 .31 
 
 
 
 .78 
 
 23 
 
 
 
 .42 
 .45 
 
 .44 
 
 .32 
 
 .49 
 
 
 24 .. 
 
 .37 
 
 
 
 
 25 
 
 .50 
 .46 
 
 .51 
 
 .50 
 .48 
 .46 
 .43 
 
 .42 
 
 
 .41 
 
 .41 
 .39 
 .30 
 .32 
 .25 
 .20 
 
 .29 
 
 .25 
 .23 
 
 .47 
 .48 
 .31 
 
 .52 
 
 26 
 
 .94 
 .86 
 
 .86 
 
 .31 
 "".'36' 
 
 .41 
 .50 
 .41 
 
 .70 
 
 27 
 
 
 28 
 
 .57 
 
 29 
 
 .54 
 
 30... 
 
 
 31... 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Monthly discharge at station No. 64 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 
 October 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 
 in second- 
 feet. 
 
 a 0.06 
 a. 16 
 a. 40 
 
 .003 
 .003 
 
 ,20 
 
 Run-off 
 (total in 
 acre-feet). 
 
 3.69 
 
 9.51 
 
 24.60 
 
 .20 
 
 .20 
 
 12.10 
 
 11.90 
 
 5.10 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July. 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.07 
 .06 
 .09 
 .12 
 .16 
 .15 
 .13 
 
 4.00 
 4.00 
 5.50 
 7.10 
 9.70 
 7.10 
 7.90 
 
 74.80 
 
 a Estimated. 
 
 Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
ISLAND OF HAWAII. 
 
 325 
 
 Discharge measurements at station No. 65 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 
 Feet. 
 1.56 
 1.39 
 
 Sec-ft. 
 0.18 
 
 
 Nov. 7 
 
 Feet. 
 1.54 
 1.54 
 
 Sec-ft. 
 0.19 
 
 Sept 28 
 
 Dec. 11 
 
 .18 
 
 
 
 
 Bed of stream of sand, gravel and silt; shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 65 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 1.40 
 
 1.52 
 1.61 
 
 
 
 
 
 
 2 
 
 
 
 1.58 
 1.50 
 1.42 
 1.48 
 
 1.51 
 1.62 
 
 
 
 1.47 
 
 
 1.50 
 
 
 
 3 
 
 
 
 1.59 
 1.70 
 1.68 
 
 1.64 
 
 
 
 
 
 4 
 
 
 1.75 
 1.40 
 
 "1.35* 
 
 1.32 
 1.32 
 
 1.32 
 1.31 
 1.60 
 1.58 
 1.52 
 
 1.51 
 1.50 
 
 
 
 
 1.68 
 1.64 
 
 "i."59" 
 1.54 
 1.60 
 1.61 
 
 "*i."59" 
 
 "i'60' 
 1.64 
 
 "'i'65' 
 
 1.59 
 1.71 
 1.60 
 1.59 
 
 1.57 
 1.61 
 1.59 
 1.57 
 1.55 
 
 1.61 
 1.57 
 1.54 
 1.50 
 
 i.58 
 1.54 
 
 1.52 
 1.51 
 1.51 
 
 "i.*53" 
 
 1.51 
 1.60 
 1.54 
 1.60 
 
 1.60 
 
 "i.66" 
 
 1.68 
 1.80 
 
 "l.l2 
 
 "i.*70' 
 1.63 
 
 1.60 
 "i'76" 
 
 
 
 5 
 
 1.50 
 
 1.50 
 1.50 
 1.55 
 
 i.88 
 
 1.29 
 
 1.68 
 
 1.52 
 1.60 
 
 "i.5i" 
 
 1.62 
 
 "i."54" 
 1.60 
 1.74 
 
 "i."68" 
 1.68 
 1.60 
 1.55 
 
 1.78 
 1.90 
 1.69 
 1.63 
 1.62 
 
 1.62 
 1.63 
 1.66 
 
 1.58 
 
 6 
 
 1.58 
 
 7 
 
 1.58 
 
 8 
 
 
 
 1.31 
 
 1.61 
 
 9 
 
 1.62 
 1.61 
 
 1.61 
 1.67 
 1.68 
 1.94 
 
 
 
 1.60 
 
 10 
 
 
 1.64 
 
 1.62 
 1.68 
 1.46 
 1.59 
 1.58 
 
 1.35 
 
 
 1.58 
 
 11 
 
 1.50 
 
 1.50 
 1.50 
 1.50 
 1.50 
 
 1.50 
 
 
 1.70 
 
 1.55 
 
 12 
 
 1.33 
 
 
 1.54 
 
 13 
 
 
 1.59 
 1.65 
 
 1.54 
 
 14 
 
 
 1.50 
 
 1.55 
 
 15 
 
 1.58 
 
 16 
 
 1.29 
 
 1.45 
 
 
 1.62 
 
 17 . 
 
 1.56 
 1.98 
 1.66 
 1.66 
 
 1.62 
 1.58 
 1.65 
 
 
 1.59 
 
 1.55 
 
 1.52 
 
 18... 
 
 
 1.54 
 1.70 
 1.63 
 
 1.67 
 1.63 
 1.64 
 
 1.01 
 
 
 1.54 
 
 19.. 
 
 1.50 
 1.50 
 
 1.50 
 1.49 
 1.49 
 1.49 
 1.48 
 
 1.48 
 1.49 
 1.46 
 
 1.45 
 
 
 
 1.52 
 1.51 
 
 1.61 
 
 1.60 
 
 20 
 
 
 1.51 
 
 1.72 
 
 21 
 
 1.52 
 
 1.50 
 1.52 
 1.51 
 1.49 
 
 1.44 
 1.42 
 1.41 
 1.41 
 
 1.58 
 
 22 
 
 1.46 
 
 
 
 1.86 
 
 23 
 
 
 
 1.50 
 1.53 
 1.51 
 
 1.45 
 1.58 
 
 
 24 
 
 1.60 
 
 
 
 
 25 
 
 1.50 
 1.39 
 
 1.56 
 
 1.60 
 1.49 
 1.44 
 
 1.48 
 
 
 1.51 
 
 1.68 
 1.51 
 
 1.61 
 
 1.59 
 1.60 
 1.54 
 1.54 
 1.52 
 1.50 
 
 1.58 
 
 1.58 
 1.56 
 1.67 
 1.68 
 1.60 
 
 1.64 
 
 26 
 
 1.79 
 1.73 
 
 1.68 
 
 1.48 
 "i.'49" 
 
 1.90 
 
 27 
 
 
 28 
 
 1.58 
 
 
 1.60 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 65 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.16 
 .19 
 .25 
 .31 
 .37 
 
 .47 
 
 .96 
 
 1.38 
 
 1.10 
 
 .82 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .16 
 .13 
 .37 
 .54 
 .37 
 
 11 
 
 0.37 
 .28 
 .22 
 .16 
 .16 
 
 .19 
 .22 
 .25 
 .25 
 
 .25 
 
 0.54 
 .34 
 .96 
 
 .68 
 .54 
 
 .40 
 
 .47 
 .54 
 .61 
 .75 
 
 0.25 
 1.10 
 2.12 
 3.24 
 5.72 
 
 1.80 
 2.44 
 1.96 
 2.44 
 2.52 
 
 21.. 
 
 0.25 
 .25 
 .25 
 .25 
 .25 
 
 .25 
 .25 
 .22 
 .19 
 .16 
 .13 
 
 0.68 
 .61 
 .54 
 .47 
 .37 
 
 .13 
 .13 
 .10 
 .10 
 .13 
 
 0.75 
 
 2 
 
 
 12.. . 
 
 22.. 
 
 .25 
 
 3 
 
 
 13 
 
 23.. 
 
 .25 
 
 4 
 
 
 14.. 
 
 24.. 
 
 .75 
 
 5 
 
 
 15.. . 
 
 25.. . 
 
 .10 
 
 6 
 
 
 16.. 
 
 26 
 
 .10 
 
 7..... 
 
 
 17.. 
 
 27 
 
 .10 
 
 8 
 
 
 18.. 
 
 28 
 
 .10 
 
 9 
 
 
 19.. 
 
 29 
 
 .22 
 
 10 
 
 0.54 
 
 20.. 
 
 30 
 
 .16 
 
 
 
 31 
 
 .10 
 
 
 
 
326 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 65 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27. 
 28. 
 29 
 30 
 31 
 
 0.1 
 .1 
 .1 
 
 1.4 
 .1 
 
 .1 
 1 
 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 
 .3 
 1.0 
 
 2.0 
 2.8 
 3.4 
 2.0 
 
 0.1 
 .3 
 .1 
 .1 
 .1 
 
 .1 
 .5 
 .5 
 
 .5 
 .5 
 
 1.0 
 2.9 
 1.0 
 
 .5 
 .3 
 
 .8 
 .4 
 .3 
 
 .4 
 .1 
 .1 
 .1 
 .1 
 2.0 
 
 1.0 
 
 .7 
 
 .4 
 
 1.1 
 
 1.0 
 
 .7 
 3.0 
 2.5 
 2.0 
 
 .7 
 
 .5 
 
 1.0 
 
 .1 
 
 .4 
 
 1.5 
 
 .2 
 
 1.1 
 
 0.1 
 
 1.0 
 .1 
 
 0.2 
 .5 
 1.5 
 1.2 
 1.0 
 
 .2 
 .4 
 .2 
 .1 
 .1 
 
 0.1 
 
 .1 
 
 1.5 
 
 1.0 
 
 .7 
 
 .2 
 .4 
 .2 
 .4 
 .5 
 
 .4 
 .4 
 .4 
 .4 
 
 .7 
 
 .2 
 .2 
 .3 
 .5 
 .2 
 
 .2 
 .2 
 
 0.8 
 1.0 
 2.0 
 3.0 
 
 0.5 
 .1 
 .2 
 .3 
 .2 
 
 .2 
 .1 
 .1 
 .1 
 .2 
 
 .1 
 
 .4 
 .2 
 .4 
 .4 
 
 .4 
 1.5 
 
 .8 
 1.0 
 1.8 
 
 1.5 
 1.2 
 3.0 
 1.1 
 
 .4 
 3.5 
 2.5 
 2.0 
 1.1 
 1.0 
 
 1.0 
 .5 
 
 2.0 
 .5 
 .5 
 
 .4 
 
 .2 
 
 .4 
 
 1.4 
 
 3.0 
 
 2.5 
 
 1.0 
 
 1.0 
 
 .4 
 
 .2 
 
 1.7 
 
 2.6 
 
 .10 
 
 .6 
 
 .5 
 
 .5 
 .6 
 
 .3 
 .3 
 .9 
 
 1.0 
 .4 
 
 1.0 
 2.0 
 
 .2 
 .2 
 .2 
 .2 
 .3 
 
 .5 
 .2 
 .2 
 .4 
 1.2 
 
 .3 
 2.3 
 3.5 
 2.5 
 
 .7 
 
 2.6 
 1.5 
 .3 
 .4 
 .2 
 .2 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 
 charge for days for wh 
 
 eh gage heights are missing estimated from diagram prepared from record of daily 
 
 rainfall at the camp near station No. 50 
 Monthly discharge at station No. 65 at 2,700-foot level, near Hilo, Hawaii, for 1911- 
 
 Month. 
 
 1911 
 October 10-31.... 
 
 November 
 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.24 
 .50 
 .92 
 
 .10 
 
 .54 
 .64 
 
 .98 
 .48 
 
 Run-off 
 (total in 
 acre-feet). 
 
 10.60 
 29.90 
 56.50 
 
 6.15 
 31.10 
 39.40 
 58.30 
 29.50 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 0.10 
 .45 
 .35 
 .51 
 
 .87 
 .90 
 .79 
 
 .56 
 
 Run-off 
 (total in 
 acre-feet). 
 
 5.95 
 27.70 
 21.50 
 30.30 
 53.50 
 53.60 
 48.60 
 
 406.00 
 
 Discharge measurements at station No. 66 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 
 0.43 
 (a) 
 
 Sec.-ft. 
 0.05 
 (a) 
 
 Nov. 7 
 
 Feet. 
 0.45 
 .44 
 
 Sec.-ft. 
 0.02 
 
 Sept. 28 
 
 Dec. 11 
 
 
 
 
 
 
 a Channel dry. 
 Note.— Bed of stream of sand, gravel, and silt; shifting. One channel at all stages. 
 
ISLAND OF HAWAII. 
 
 327 
 
 Daily gageheight, in feet, at station No. 66 at 2, 700-foot level, near Hilo, Hawaii, for 1911-12. 
 [Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.30 
 
 0.50 
 .59 
 
 
 
 
 
 
 2 
 
 
 
 0.60 
 .60 
 .50 
 
 .48 
 
 .45 
 
 .48 
 
 
 
 0.24 
 
 
 0.44 
 
 
 
 3 
 
 
 
 0.52 
 .55 
 .59 
 
 .68 
 
 
 
 
 
 4 
 
 
 (a) 
 
 0.00 
 
 "\'66" 
 
 .00 
 .00 
 
 .00 
 .00 
 .42 
 .30 
 .10 
 
 -.25 
 -.50 
 
 
 
 
 .61 
 .53 
 
 "".BO 
 
 .48 
 .53 
 .55 
 
 "".B2 
 
 "\*52* 
 .61 
 
 "6.' 59" 
 
 .60 
 .72 
 .51 
 .50 
 
 .47 
 .58 
 .54 
 .58 
 .54 
 
 .57 
 .49 
 .44 
 .42 
 
 .50 
 
 .48 
 
 .44 
 .40 
 
 .42 
 
 ""."48" 
 
 .44 
 .56 
 .52 
 .70 
 
 .60 
 
 ""."82* 
 .89 
 1.04 
 
 ""."93' 
 
 '".*86* 
 .62 
 
 .60 
 "".'96' 
 
 
 
 5 
 
 0.45 
 
 .45 
 .45 
 .50 
 
 0.85 
 
 .28 
 
 .61 
 
 .52 
 .55 
 
 "".48" 
 
 0.62 
 
 ""."43' 
 .54 
 1.00 
 
 "\"80" 
 .86 
 .54 
 .46 
 
 1.02 
 
 1.11 
 
 .90 
 
 .82 
 .70 
 
 .68 
 .81 
 .89 
 
 0.50 
 
 6 
 
 .50 
 
 7. 
 
 .64 
 
 8 
 
 
 
 .30 
 
 .80 
 
 9 
 
 .61 
 .60 
 
 .61 
 .66 
 .89 
 .96 
 
 
 
 .68 
 
 10 
 
 
 .70 
 
 .59 
 .65 
 .64 
 .55 
 .56 
 
 .58 
 
 
 .54 
 
 11 
 
 .45 
 .45 
 .44 
 .44 
 .35 
 
 .35 
 
 
 .65 
 
 .44 
 
 12 
 
 .53 
 
 
 .40 
 
 13 
 
 
 .55 
 
 .63 
 
 .40 
 
 
 
 .40 
 
 .46 
 
 15 
 
 .52 
 
 16 
 
 .42 
 
 .36 
 
 
 .88 
 
 17 
 
 .62 
 .95 
 
 .62 
 .63 
 
 .61 
 .59 
 .62 
 
 
 .61 
 
 .46 
 
 .62 
 
 18 
 
 
 .62 
 .60 
 .61 
 
 .63 
 .61 
 .63 
 .73 
 
 .42 
 
 
 .49 
 
 19 
 
 -.10 
 -.10 
 
 -.10 
 
 -.09 
 
 (a) 
 
 .00 
 
 .00 
 
 .00 
 .00 
 .00 
 .00 
 .00 
 
 
 
 .44 
 .42 
 
 .55 
 
 .54 
 
 20 
 
 
 .45 
 
 1.00 
 
 21 
 
 .40 
 
 .46 
 .44 
 .42 
 .40 
 
 .38 
 .36 
 .35 
 .35 
 
 .80 
 
 22 
 
 .46 
 
 
 
 1.11 
 
 23 
 
 
 
 .15 
 .25 
 
 .12 
 
 .11 
 
 .48 
 
 
 24. 
 
 .49 
 
 
 
 
 25. 
 
 .59 
 .32 
 
 .64 
 
 .61 
 .59 
 .48 
 .46 
 
 .47 
 
 
 .49 
 
 .50 
 .50 
 .46 
 .48 
 .46 
 .40 
 
 .52 
 
 .50 
 .48 
 .88 
 .87 
 .52 
 
 .80 
 
 26 
 
 .81 
 .74 
 .70 
 
 .44 
 ...... 
 
 .51 
 .60 
 .51 
 
 1.15 
 
 27 
 
 
 28 
 
 .si 
 
 29. 
 
 .65 
 
 30. . 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 1"" 
 
 
 
 a Channel dry. 
 Monthly discharge at station No. 66 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 
 October 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 a 0.02 
 a. 06 
 a. 05 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.23 
 3.57 
 3.08 
 
 5.50 
 5.30 
 2.40 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October : 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.03 
 .04 
 .05 
 .05 
 .07 
 .07 
 .06 
 
 .05 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.80 
 2.60 
 2.80 
 3.20 
 4.40 
 4.20 
 3.60 
 
 37.20 
 
 a Estimated. 
 
 Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge for 
 periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
328 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements at station No. 67 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. . 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 20 
 
 Feet. 
 0.42 
 .24 
 
 Sec.-ft. 
 0.09 
 
 
 Nov. 7 
 
 Feet. 
 0.35 
 .36 
 
 Sec.-ft. 
 0.11 
 
 Sept. 28 
 
 Dec. 11 
 
 .10 
 
 
 
 
 Note.— Bed of stream of sand, gravel, and silt; shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 67 at 2,700^-foot level, near Hilo, Hawaii, for 1912, 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.35 
 
 0.40 
 .49 
 
 
 
 
 
 
 2 
 
 
 
 0.50 
 .40 
 .34 
 .35 
 
 .31 
 .35 
 
 
 
 0.31 
 
 
 0.41 
 
 
 
 3 „ 
 
 
 
 0.36 
 .49- 
 .46 
 
 .52 
 
 
 
 
 
 4 
 
 
 0.20 
 
 (B) 
 
 —(a)" 
 
 (B) 
 (B) 
 
 («) 
 
 .34 
 
 .30 
 .22 
 
 .21 
 .20 
 
 
 
 
 .51 
 
 .48 
 
 ""."42" 
 .41 
 .48 
 .49 
 
 "\*46" 
 ...... 
 
 .45 
 
 "6." 63" 
 
 .64 
 .65 
 .49 
 .49 
 
 .46 
 .51 
 .46 
 .48 
 .46 
 
 .50 
 .47 
 .41 
 .40 
 
 .44 
 .40 
 
 .38 
 .33 
 .35 
 
 "".'46" 
 
 .38 
 .48 
 .44 
 .50 
 
 .50 
 
 **\"52* 
 
 .57 
 .68 
 
 ""."60" 
 
 ""."57" 
 .42 
 
 .41 
 ""."64" 
 
 
 
 5 
 
 0.40 
 
 .40 
 .40 
 
 0.68 
 
 .30 
 
 .51 
 
 .45 
 .45 
 
 "*."40" 
 
 0.52 
 
 "*\*46* 
 .42 
 .67 
 
 *"\"52* 
 .55 
 .42 
 .36 
 
 .69 
 .78 
 .56 
 .52 
 
 .47 
 
 .46 
 .48 
 .53 
 
 0.40 
 
 6 
 
 .40 
 
 7 
 
 .40 
 
 8 
 
 
 
 .34 
 
 .49 
 
 9.. 
 
 
 .49 
 
 .48 
 
 .48 
 .52 
 .69 
 .79 
 
 
 
 .42 
 
 10 
 
 
 .60 
 
 .52 
 .51 
 .56 
 .51 
 .51 
 
 .43 
 
 
 .40 
 
 11 
 
 .40 
 .40 
 .40 
 .40 
 .35 
 
 .35 
 
 
 .61 
 
 .34 
 
 12 
 
 .41 
 
 
 .30 
 
 13 
 
 
 .45 
 
 .77 
 
 .30 
 
 14 
 
 
 .40 
 
 .38 
 
 15. . 
 
 .40 
 
 16 
 
 .26 
 
 .30 
 
 
 .44 
 
 17. . 
 
 .51 
 .79 
 .51 
 .54 
 
 .46 
 .46 
 
 .48 
 
 
 .62 
 
 .40 
 
 .40 
 
 18. . 
 
 
 .50 
 .53 
 
 .58 
 
 .58 
 .58 
 .61 
 .66 
 
 .21 
 
 
 .36 
 
 19. . 
 
 .34 
 .34 
 
 .34 
 .34 
 .32 
 .32 
 .31 
 
 .31 
 .31 
 .25 
 .22 
 .21 
 
 
 
 .35 
 
 .34 
 
 .50 
 
 .42 
 
 20 .. 
 
 
 .39 
 
 .60 
 
 21 
 
 .39 
 
 .34 
 .38 
 .32 
 .31 
 
 .30 
 .27 
 .25 
 .25 
 
 .45 
 
 22 
 
 .37 
 
 
 
 .69 
 
 23.. 
 
 
 
 .32 
 .34 
 .32 
 
 .29 
 .41 
 
 
 24 
 
 .39 
 
 
 
 
 25 
 
 .49 
 .31 
 
 .46 
 
 .46 
 .44 
 .34 
 .32 
 .39 
 
 
 .41 
 
 .45 
 .45 
 .40 
 .41 
 .38 
 .34 
 
 .41 
 
 .40 
 .38 
 .55 
 .54 
 .40 
 
 .50 
 
 26 
 
 .72 
 .63 
 .61 
 
 .39 
 ""."39" 
 
 .48 
 .51 
 
 .48 
 
 .78 
 
 27 
 
 
 
 .40 
 
 29 
 
 .41 
 
 
 
 
 
 
 31. . 
 
 
 
 
 
 
 
 
 
 i ~ 
 
 
 
 
 
 
 
 
 
 b Channel dry. 
 
 Daily discharge, in second-feet, at station No. 67 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dee. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.15 
 .20 
 .20 
 .25 
 .25 
 
 .30 
 .40 
 .35 
 .30 
 .30 
 
 0.15 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .20 
 .15 
 
 11 
 
 
 0.25 
 .25 
 .40 
 .35 
 .30 
 
 .25 
 .30 
 .30 
 .30 
 .30 
 
 0.15 
 .30 
 .50 
 .75 
 
 1.50 
 
 .90 
 1.00 
 
 .90 
 1.05 
 1.10 
 
 21 
 
 0.15 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 0.30 
 .30 
 .30 
 .30 
 .25 
 
 .20 
 .15 
 .15 
 45 
 
 .15 
 
 0.85 
 
 2 
 
 
 12 
 
 
 22 
 
 .70 
 
 3 
 
 
 13 
 
 
 23 
 
 .60 
 
 4 
 
 
 14 
 
 
 24 
 
 .85 
 
 5... 
 
 
 15 
 
 
 25 
 
 .70 
 
 6 
 
 
 16 
 
 
 26 
 
 .70 
 
 7... 
 
 
 17 
 
 
 27 
 
 .65 
 
 8 
 
 
 18 , 
 
 
 28 
 
 .65 
 
 9... 
 
 
 19 
 
 20 
 
 
 29 
 
 .70 
 
 10... 
 
 
 30 
 
 .70 
 
 
 
 
 
 31 
 
 .70 
 
 
 
 
ISLAND OF HAWAII. 
 
 329 
 
 Daily discharge, in second-feet, at station No. 67 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.15 
 .15 
 
 .15 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .15 
 .15 
 .15 
 .10 
 
 .10 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 (a) 
 a) 
 («) 
 
 b) 
 
 (a) 
 
 (a) 
 ( a ) 
 (°) 
 (a) 
 (o) 
 
 (a) 
 
 (a) 
 
 0.05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .20 
 
 .35 
 .50 
 .70 
 .40 
 .25 
 
 .05 
 .05 
 .05 
 .05 
 
 0.15 
 .25 
 .15 
 .05 
 .10 
 
 .05 
 .10 
 .15 
 .25 
 .25 
 
 .25 
 .30 
 .55 
 .70 
 .40 
 
 .30 
 .25 
 .70 
 .25 
 .30 
 
 .20 
 .20 
 .25 
 .20 
 .20 
 
 .20 
 .20 
 .10 
 .05 
 .15 
 .50 
 
 0.20 
 .15 
 .10 
 .25 
 .20 
 
 .30 
 .60 
 .50 
 .50 
 .40 
 
 .30 
 .25 
 .35 
 .25 
 .25 
 
 .30 
 .40 
 .25 
 .30 
 .40 
 
 .35 
 .35 
 .40 
 .50 
 .50 
 
 .60 
 .45 
 .40 
 .30 
 .30 
 
 
 0.10 
 
 0.15 
 .25 
 .40 
 .30 
 .25 
 
 .20 
 .20 
 .15 
 .15 
 .10 
 
 .40 
 .30 
 .20 
 .65 
 .50 
 
 .45 
 .40 
 .30 
 .10 
 .10 
 
 .10 
 .10 
 .20 
 .30 
 .15 
 
 .20 
 .20 
 .15 
 .15 
 .15 
 .10 
 
 0.05 
 .05 
 .50 
 .25 
 .20 
 
 .15 
 .15 
 .15 
 .20 
 .25 
 
 .20 
 .20 
 .25 
 .25 
 .20 
 
 .30 
 .15 
 .20 
 .25 
 .20 
 
 .15 
 .10 
 .05 
 .10 
 .05 
 
 .05 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 0.30 
 .40 
 .60 
 .70 
 .45 
 
 .45 
 .45 
 .25 
 .25 
 .20 
 
 .20 
 .25 
 .20 
 .20 
 .20 
 
 .25 
 .25 
 .15 
 .15 
 .10 
 
 .10 
 .15 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .20 
 
 0.15 
 .15 
 .20 
 .20 
 .15 
 
 .15 
 .10 
 .10 
 .10 
 .15 
 
 .15 
 .20 
 .20 
 .25 
 .25 
 
 .25 
 .50 
 .30 
 .35 
 .50 
 
 .40 
 .40 
 .60 
 .35 
 .15 
 
 .15 
 .70 
 .60 
 .50 
 .45 
 .30 
 
 0.30 
 .20 
 .50 
 .30 
 .30 
 
 .20 
 .20 
 .15 
 .50 
 .70 
 
 .60 
 .30 
 .35 
 .15 
 .10 
 
 .55 
 .65 
 .35 
 .30 
 .25 
 
 .20 
 .20 
 .30 
 .20 
 .15 
 
 .15 
 .15 
 .35 
 .30 
 .15 
 
 0.40 
 
 2 
 
 .50 
 
 3 
 
 
 
 .30 
 
 4 
 
 
 
 .30 
 
 5 
 
 0.55 
 
 .05 
 
 .15 
 
 6 
 
 .15 
 
 7. . 
 
 .15 
 
 8 
 
 
 .16 
 
 .25 
 
 9... 
 
 .15 
 
 10 
 
 .20 
 
 
 .15 
 
 11. . . 
 
 .10 
 
 12 
 
 .15 
 
 
 .05 
 
 13 
 
 .05 
 
 14 
 
 
 .15 
 
 .15 
 
 15... 
 
 .15 
 
 16 
 
 .05 
 
 .05 
 
 .20 
 
 17 
 
 .15 
 
 18... 
 
 
 
 .10 
 
 19... 
 
 
 
 .15 
 
 20 
 
 
 .15 
 
 .40 
 
 21 
 
 .20 
 
 22. 
 
 .10 
 
 
 .55 
 
 23 
 
 .70 
 
 24 
 
 .15 
 
 
 .50 
 
 25 
 
 .25 
 
 26 
 
 .15 
 
 ""."is" 
 
 .28 
 .25 
 .25 
 
 .65 
 
 27 
 
 .40 
 
 28 
 
 .15 
 
 29 
 
 .15 
 
 30 
 
 
 
 .10 
 
 31. 
 
 
 
 .10 
 
 
 
 
 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from poorly denned rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near 
 station No. 50. 
 
 Monthly discharge at station No. 67 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 October 21-31.... 
 
 November 
 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.15 
 .26 
 .56 
 
 .10 
 .10 
 .25 
 .35 
 .20 
 
 Run-off 
 (total in 
 acre-feet). 
 
 3.28 
 15.80 
 
 6.15 
 
 5.75 
 
 15.40 
 
 20.80 
 
 12.30 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.15 
 
 .24 
 .17 
 .23 
 .29 
 .30 
 .25 
 
 .22 
 
 Run-off 
 (total in 
 acre-feet). 
 
 8.90 
 14.80 
 10.50 
 13.70 
 17.80 
 17.90 
 15.40 
 
 159.00 
 
330 
 
 Discharge measurements at station No. 68 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Aug. 20 . 
 Sept. 28. 
 
 Gage 
 height. 
 
 Feet. 
 
 0.96 
 
 .54 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 
 4.28 
 
 .78 
 
 Date. 
 
 Nov. 7 . 
 Dec. 11 
 
 height. 
 
 Feet. 
 1.23 
 1.15 
 
 Dis- 
 charge. 
 
 Sec.-ft. 
 5.66 
 5.13 
 
 Note.— Bed of stream of cobbles and bowlders with some exposed bedrock. Section near gage, rough. 
 Station probably permanent. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 68 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.70 
 
 1.32 
 1.41 
 
 
 
 
 
 
 2 
 
 
 
 1.90 
 1.60 
 1.40 
 1.10 
 
 .91 
 1.05 
 
 
 
 0.70 
 
 
 1.01 
 
 
 
 3 
 
 
 
 1.76 
 1.69 
 1.85 
 
 1.90 
 
 
 
 
 
 4 
 
 
 0.20 
 .20 
 
 """."is" 
 
 .14 
 .11 
 
 .11 
 
 .10 
 
 1.00 
 
 .96 
 
 .68 
 
 • .41 
 .21 
 
 
 
 
 1.77 
 1.71 
 
 "Tod" 
 
 1.04 
 1.17 
 1.15 
 
 "i'.n 
 "Tio" 
 
 1.84 
 
 "T*87" 
 
 1.59 
 2.41 
 1.60 
 1.50 
 
 1.39 
 1.70 
 1.47 
 1.40 
 1.21 
 
 1.46 
 1.20 
 1.15 
 1.04 
 
 1.18 
 .91 
 
 .87 
 .78 
 .77 
 
 "i.'oi" 
 
 .95 
 1.52 
 1.26 
 1.47 
 
 1.42 
 
 ""i.76* 
 
 2.01 
 2.48 
 
 "2A8 
 
 "2. 24* 
 1.86 
 
 1.71 
 
 "*2.*48" 
 
 
 
 5 
 
 0.80 
 
 .80 
 .80 
 .81 
 
 1.94 
 
 .68 
 
 1.48 
 
 1.32 
 1.40 
 
 "i.'iT 
 
 1.89 
 
 *"i.'26* 
 1.38 
 1.30 
 
 "2."02" 
 2.08 
 1.58 
 1.30 
 
 2.71 
 3.00 
 2.01 
 2.19 
 1.79 
 
 1.70 
 1.76 
 
 1.88 
 
 1.34 
 
 6 
 
 1.30 
 
 7 
 
 1.62 
 
 8 
 
 
 
 .70 
 
 1.90 
 
 9 
 
 1.66 
 1.65 
 
 1.64 
 2.02 
 2.12 
 2.26 
 
 
 
 1.65 
 
 10 
 
 
 2.14 
 
 2.01 
 1.64 
 1.79 
 1.39 
 1.41 
 
 1.60 
 
 
 1.36 
 
 11 
 
 .78 
 
 .78 
 
 .. .75 
 
 
 2.23 
 
 1.15 
 
 12 
 
 1.21 
 
 
 1.00 
 
 13 
 
 
 1.41 
 1.94 
 
 .90 
 
 14 
 
 .75 
 .65 
 
 .55 
 
 
 .79 
 
 .99 
 
 15... 
 
 1.35 
 
 16 
 
 .90 
 
 .72 
 
 
 1.80 
 
 17... 
 
 1.86 
 2.29 
 1.69 
 1.84 
 
 1.64 
 1.57 
 1.66 
 
 
 1.59 
 
 1.07 
 
 1.61 
 
 18 
 
 
 1.41 
 1.51 
 1.56 
 
 1.58 
 1.63 
 1.64 
 1.79 
 
 .84 
 
 
 1.22 
 
 19 
 
 .44 
 
 .44 
 
 .44 
 .42 
 .42 
 .42 
 .41 
 
 .41 
 .42 
 .40 
 .39 
 
 
 
 1.00 
 .99 
 
 1.61 
 
 1.80 
 
 20 
 
 
 1.18 
 
 2.52 
 
 21 
 
 .93 
 
 .78 
 .81 
 
 .74 
 .68 
 
 .60 
 .59 
 .54 
 .53 
 
 1.90 
 
 22 
 
 .82 
 
 
 
 2.72 
 
 23... 
 
 
 
 .77 
 .79 
 .79 
 
 .70 
 1.51 
 
 
 24 
 
 .86 
 
 
 
 
 25 
 
 1.75 
 1.41 
 
 1.55 
 
 1.41 
 
 1.25 
 
 .94 
 
 .92 
 
 
 1.14 
 
 1.15 
 1.18 
 1.12 
 1.10 
 .96 
 .80 
 
 1.39 
 
 1.29 
 1.15 
 
 ' 1.68 
 1.92 
 1.34 
 
 1.77 
 
 26 
 
 1.80 
 1.79 
 1.76 
 
 .80 
 "".*7o" 
 
 1.78 
 1.91 
 1.78 
 
 2.90 
 
 27 
 
 
 28 
 
 1.50 
 
 29. -. 
 
 1.59 
 
 
 
 
 
 
 31. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 "* 
 
 
 
 Daily discharge, in second-feet, at station No. 68 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 2.82 
 4.46 
 6.14 
 7.91 
 10.00 
 
 11.10 
 13.40 
 15.20 
 12.50 
 10.00 
 
 4.46 
 4.30 
 3.18 
 2.26 
 2.47 
 
 2.54 
 
 2.54 
 2.75 
 3.03 
 2.75 
 
 11 
 
 
 8.00 
 6.30 
 11.40 
 10.50 
 9.80 
 
 9.00 
 10.40 
 11.80 
 12.90 
 14.00 
 
 2.47 
 
 7.82 
 
 14.50 
 
 21.80 
 
 24.90 
 
 13.50 
 15^50 
 14.50 
 15.50 
 1G.90 
 
 21 
 
 3.90 
 3.58 
 3.34 
 3.10 
 2.89 
 
 2.68 
 2.47 
 2.19 
 1.91 
 1.64 
 1.40 
 
 13.80 
 13.60 
 13.40 
 13.30 
 13.20 
 
 9.20 
 5.02 
 5.10 
 4.70. 
 4.62 
 
 11.50 
 
 2. 
 
 
 12 
 
 
 22 
 
 5.50 
 
 3. . 
 
 
 13 
 
 
 23 
 
 3.90 
 
 4. . 
 
 
 14 
 
 
 24 
 
 11.50 
 
 5. . . 
 
 
 15 
 
 
 25 
 
 8.20 
 
 6 
 
 
 16 
 
 
 26 
 
 7.28 
 
 7 
 
 
 17 
 
 
 27 
 
 7.10 
 
 8 
 
 
 18 
 
 
 28 
 
 7.10 
 
 9. 
 
 
 19 
 
 
 29 
 
 8.20 
 
 10. . 
 
 
 20 
 
 
 30 
 
 7.55 
 
 
 
 
 
 31 
 
 7.10 
 
 
 
 
ISLAND OF HAWAII. 
 
 331 
 
 Daily discharge, in second-feet, at station No. 68 at 
 
 for 1912. 
 
 ', 7 '00-foot level, near Hilo, Hawaii, 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2.40 
 2.40 
 2.40 
 2.40 
 2.40 
 
 2.40 
 2.40 
 2.50 
 2.40 
 2.40 
 
 2.30 
 2.30 
 2.00 
 2.00 
 1.40 
 
 .80 
 .60 
 .50 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .30 
 
 .30 
 .40 
 .30 
 .30 
 .30 
 .30 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 
 .20 
 
 3.90 
 
 3.60 
 
 1.60 
 
 .50 
 .30 
 .20 
 .20 
 5.00 
 
 10.00 
 15. 00 
 20.00 
 15.00 
 10.00 
 
 7.20 
 10.00 
 10.00 
 10.00 
 
 10.00 
 
 12.00 
 
 9.00 
 
 7.10 
 
 4.70 
 
 3.20 
 4.30 
 7.00 
 9.60 
 9.50 
 
 9.40 
 13.00 
 14.00 
 16.00 
 15.00 
 
 13.00 
 12.00 
 16.00 
 10.00 
 11.00 
 
 9.40 
 8.70 
 9.60 
 9.00 
 8.50 
 
 7.20 
 5.90 
 3.40 
 3.30 
 3.70 
 15.00 
 
 13.00 
 12.00 
 11.00 
 10.00 
 12.00 
 
 12.00 
 18.00 
 16.00 
 15.00 
 14.00 
 
 13.00 
 9.40 
 
 11.00 
 7.00 
 7.20 
 
 7.20 
 
 7.20 
 7.20 
 8.10 
 8.60 
 
 8.80 
 9.30 
 9.40 
 11.00 
 11.00 
 
 11.00 
 11.00 
 11.00 
 11.00 
 10.00 
 
 11.00 
 11.00 
 11.00 
 11.00 
 12.00 
 
 13.00 
 15.00 
 14.00 
 13.00 
 9.00 
 
 8.00 
 5.60 
 4.00 
 4.00 
 4.00 
 
 3.10 
 5.00 
 2.70 
 2.70 
 2.60 
 
 2.50 
 2.50 
 2.60 
 2.80 
 2.60 
 
 2.40 
 2.20 
 2.00 
 2.00 
 1.80 
 1.80 
 
 1.70 
 1.70 
 1.70 
 1.60 
 1.60 
 
 1.60 
 1.65 
 1.70 
 1.80 
 1.90 
 
 2.00 
 2.10 
 2.20 
 2.30 
 2.00 
 
 1.80 
 2.70 
 3.60 
 4.40 
 5.30 
 
 6.30 
 7.20 
 8.10 
 9.00 
 10.00 
 
 11.00 
 12.00 
 11.00 
 9.00 
 7.50 
 
 6.50 
 7.20 
 7.40 
 7.60 
 7.80 
 
 6.50 
 7.10 
 6.00 
 4.80 
 5.00 
 
 15.00 
 11.00 
 7.20 
 12.00 
 10.50 
 
 9.50 
 8.90 
 6.40 
 3.90 
 3.80 
 
 4.00 
 4.00 
 4.00 
 8.00 
 5.00 
 
 5.10 
 
 5.30 
 4.90 
 4.70 
 3.50 
 2.40 
 
 2.00 
 1.70 
 15.00 
 11.00 
 10.00 
 
 5.00 
 4.60 
 4.20 
 5.30 
 5.10 
 
 5.00 
 4.90 
 6.00 
 7.10 
 11.00 
 
 6.00 
 4.50 
 6.80 
 9.10 
 5.00 
 
 3.30 
 
 3.00 
 2.20 
 2.30 
 2.30 
 
 1.70 
 8.10 
 5.00 
 4.00 
 3.00 
 3.00 
 
 10.00 
 14.00 
 16.00 
 20.00 
 12.00 
 
 8.90 
 17.00 
 9.00 
 8.00 
 7.50 
 
 7.00 
 10.00 
 7.70 
 7.10 
 5.60 
 
 7.60 
 5.50 
 5.10 
 4.20 
 3.20 
 
 2.30 
 2.50 
 2.00 
 1.60 
 1.30 
 
 1.10 
 
 1.10 
 
 .80 
 
 .70 
 
 4.00 
 
 3.00 
 4.00 
 4.60 
 5.30 
 3.20 
 
 2.90 
 2.30 
 2.20 
 3.10 
 4.00 
 
 3.50 
 
 8.20 
 6.00 
 7.70 
 7.60 
 
 7.30 
 20.00 
 11.00 
 13.00 
 18.00 
 
 18.00 
 15.00 
 20.00 
 15.00 
 12.00 
 
 10.00 
 20.00 
 20.00 
 20.00 
 18.00 
 
 15.00 
 10.00 
 18.00 
 15.00 
 12.00 
 
 5.00 
 6.00 
 6.90 
 6.30 
 15.00 
 
 15.00 
 13.00 
 14.00 
 8.80 
 6.30 
 
 20.00 
 23.00 
 13.00 
 15.00 
 11.00 
 
 10.00 
 11.00 
 12.00 
 10.00 
 7.00 
 
 6.20 
 5.10 
 9.80 
 12.00 
 6.60 
 
 10.00 
 
 2 
 
 15.00 
 
 
 10.00 
 
 4 
 
 10.00 
 
 5 
 
 6.60 
 
 6 
 
 6.30 
 
 7 
 
 9.20 
 
 8 
 
 12.00 
 
 9 
 
 9.50 
 
 10 
 
 6.80 
 
 11 
 
 5.10 
 
 12 
 
 3.90 
 
 13 
 
 3.10 
 
 14 
 
 3.80 
 
 15 
 
 6.70 
 
 16 
 
 11.00 
 
 17 „ 
 
 9.10 
 
 18 
 
 5.60 
 
 19 
 
 11.00 
 
 20 
 
 18.00 
 
 21 
 
 12.00 
 
 22 
 
 20.00 
 
 23 
 
 25.00 
 
 24 
 
 18.00 
 
 25 
 
 11.00 
 
 26 
 
 22.00 
 
 27 
 
 15.00 
 
 28 
 
 8.00 
 
 29 
 
 8.90 
 
 20 
 
 5.00 
 
 31 
 
 12.00 .. 
 
 5.00 
 
 
 1 1 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 68 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 October 21-31.... 
 
 November 
 
 December 
 
 1912, 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 2.65 
 9.79 
 
 8.47 
 
 1.31 
 3.27 
 9.34 
 10.70 
 5.97 
 
 Run-off 
 (total in 
 acre-feet). 
 
 57.60 
 582 
 520 
 
 8.06 
 188 
 574 
 637 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 4.55 
 6.61 
 5.39 
 6.76 
 10.20 
 11.30 
 10.40 
 
 7.67 
 
 Run-off 
 (total in 
 acre-feet). 
 
 271 
 406 
 331 
 402 
 627 
 672 
 640 
 
 5,120 
 
 Discharge measurements at station No. 69 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 21 
 
 Feet. 
 0.71 
 .64 
 
 Sec.-ft. 
 1.28 
 .49 
 
 Nov. 8 . 
 
 Feet. 
 0.80 
 .75 
 
 Sec.-ft. 
 2.84 
 
 Sept. 28 
 
 Dec. 11.. .. 
 
 1.80 
 
 
 
 
 Note.— Bed of stream of cobbles and bowlders with some exposed bedrock. Section near gage, rough, 
 but probably permanent. One channel at all stages. 
 
332 WATEE RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 69 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.60 
 
 0.75 
 
 .87 
 
 
 
 
 
 
 2 
 
 
 
 0.92 
 
 .85. 
 .82 
 
 .72 
 
 .70 
 
 ,84 
 
 
 
 0.69 
 
 
 0.70 
 
 
 
 3 
 
 
 
 0.85 
 .92 
 
 .88 
 
 .91 
 
 
 
 
 
 4 
 
 
 0.55 
 .54 
 
 "".*54" 
 .54 
 .52 
 
 .52 
 .51 
 .70 
 
 .65 
 .60 
 
 .60 
 .59 
 
 
 
 
 .84 
 .83 
 
 ""*."79" 
 
 .74 
 .80 
 
 . .81 
 
 ""."80* 
 
 '"."•83" 
 .87 
 
 "6." 96" 
 
 .87 
 
 1.08 
 
 .84 
 
 .80 
 
 .75 
 .84 
 .81 
 .84 
 .80 
 
 .83 
 .75 
 .72 
 .70 
 
 .72 
 
 .69 
 
 .68 
 .66 
 .66 
 
 ""."76" 
 
 .68 
 .74 
 .70 
 .80 
 
 .80 
 
 '"."88" 
 
 .94 
 
 1.08 
 
 "i'62" 
 
 "i.'oo" 
 
 .92 
 
 .88 
 
 "i.'io' 
 
 
 
 5 
 
 0.70 
 
 .70 
 .70 
 
 .72 
 
 1.22 
 
 .60 
 
 .88 
 
 .78 
 .81 
 
 """.'so' 
 
 0.90 
 
 "".n 
 
 .80 
 1.16 
 
 ""."98" 
 
 1.02 
 
 .84 
 
 .79 
 
 1.22 
 
 1.40 
 
 1.02 
 
 1.00 
 
 .96 
 
 .90 
 .89 
 .94 
 
 0.80 
 
 6 
 
 .80 
 
 7 
 
 .80 
 
 8 
 
 
 
 .66 
 
 .90 
 
 9 
 
 .86 
 
 .86 
 
 .84 
 1.02 
 
 .96 
 1.01 
 
 
 
 .85 
 
 10 
 
 
 1.00 
 
 .95 
 .98 
 1.04 
 .99 
 .91 
 
 .72 
 
 
 .85 
 
 11 
 
 .68 
 .68 
 .68 
 .68 
 .65 
 
 .64 
 
 
 1.03 
 
 .78 
 
 12 
 
 .71 
 
 
 .76 
 
 13 
 
 
 .si 
 
 .91 
 
 .70 
 
 14 
 
 
 
 .75 
 
 
 
 
 .78 
 
 16 
 
 .62 
 
 
 
 .90 
 
 17 
 
 .94 
 
 1.04 
 
 .94 
 
 .96 
 
 .82 
 .80 
 
 .84 
 
 
 
 .88 
 
 .70 
 
 .71 
 
 
 
 .89 
 .93 
 .91 
 
 .96 
 
 .93 
 
 .96 
 
 1.10 
 
 .59 
 
 
 
 19 
 
 .62 
 .62 
 
 .62 
 .61 
 .60 
 .60 
 .60 
 
 ! .60 
 .60 
 .56 
 .55 
 .55 
 
 
 .70 
 
 .72 
 .71 
 
 .81 
 
 .81 
 
 20 
 
 1.00 
 
 21 
 
 ""."65" 
 
 .66 
 
 .70 
 
 .68 
 .70 
 .68 
 .66 
 
 .64 
 .62 
 .63 
 .62 
 
 .82 
 
 22 
 
 1.14 
 
 23 
 
 
 
 .68 
 .72 
 .70 
 
 .65 
 
 .81 
 
 
 24 
 
 .7i 
 
 
 
 
 
 .81 
 .69 
 
 .85 
 
 .84 
 .81 
 .71 
 .68 
 .72 
 
 .70 
 
 .81 
 
 .78 
 .85 
 .72 
 .73 
 .71 
 .70 
 
 .82 
 
 .81 
 
 .81 
 .90 
 .93 
 
 .83 
 
 .87 
 
 26 
 
 1.10 
 1.03 
 1.00 
 
 .71 
 
 1.19 
 
 27 
 
 
 
 .68 
 
 .7i 
 
 .88 
 .71 
 
 .si 
 
 29 
 
 .80 
 
 30 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 69 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.8 
 1.8 
 1.5 
 1.5 
 1.5 
 
 1.5 
 1.5 
 2.4 
 2.9 
 
 2.4 
 
 11 
 
 
 1.8 
 5.3 
 9.2 
 14.6 
 26.0 
 
 18.2 
 20.0 
 18.5 
 20.0 
 21.5 
 
 21 
 
 7.1 
 6.7 
 6.5 
 6.3 
 6.1 
 
 3.1 
 2.7 
 2.9 
 2.4 
 
 1.8 
 
 12.5 
 
 2 
 
 
 12 
 
 
 22 ... 
 
 6.9 
 
 3 
 
 
 13 
 
 6.5 
 
 5.5 
 4.9 
 
 4.5 
 5.3 
 
 6.1 
 6.9 
 
 7.5 
 
 23 
 
 6.5 
 
 4 
 
 
 14 
 
 24 
 
 12.5 
 
 5 
 
 
 15 
 
 25 
 
 8.5 
 
 6 
 
 
 16 
 
 26 
 
 7.5 
 
 7 
 
 
 17 
 
 27 
 
 6.5 
 
 8 
 
 
 18... 
 
 28 
 
 6.5 
 
 9 
 
 
 19 
 
 29 
 
 6.5 
 
 10 
 
 
 20 
 
 30 
 
 7.5 
 
 
 
 
 31 
 
 6.5 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 333 
 
 Daily discharge, in second-feet, at station No. 69 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1.... 
 
 1.20 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.20 
 1.20 
 1.50 
 1.40 
 1.20 
 
 1.00 
 1.00 
 1.00 
 1.00 
 .70 
 
 .70 
 .60 
 .50 
 .40 
 .40 
 
 .40 
 .30 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 1.20 
 .70 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .1.50 
 
 10.00 
 18.00 
 20.00 
 12.00 
 2.90 
 
 1.10 
 
 1.00 
 1.00 
 1.00 
 
 3.00 
 4.90 
 3.60 
 3.10 
 1.50 
 
 1.20 
 3.40 
 3.60 
 3.80 
 3.80 
 
 3.40 
 6.90 
 5.70 
 6.70 
 6.20 
 
 5.80 
 5.30 
 7.30 
 5.30 
 5.70 
 
 3.10 
 2.70 
 3.40 
 3.50 
 3.60 
 
 3.40 
 2.90 
 1.40 
 1.00 
 1.50 
 12.00 
 
 6.00 
 4.00 
 3.60 
 4.90 
 4.10 
 
 4.70 
 12.00 
 11.00 
 10.00 
 
 6.50 
 
 5.50 
 6.10 
 7.30 
 6.30 
 4.70 
 
 4.50 
 4.50 
 4.30 
 5.10 
 4.70 
 
 5.70 
 5.10 
 5.70 
 8.50 
 8.50 
 
 8.50 
 7.10 
 6.50 
 5.00 
 6.00 
 
 6.00 
 7.00 
 8.00 
 10.00 
 12.00 
 
 9.00 
 5.00 
 3.00 
 2.00 
 1.50 
 
 1.40 
 
 1.30 
 
 1.00 
 
 .80 
 
 .60 
 
 .40 
 .30 
 .20 
 .40 
 .50 
 
 .60 
 
 .70 
 
 2.50 
 
 1.40 
 
 1.40 
 
 1.40 
 
 1.20 
 
 1.00 
 
 .80 
 
 .60 
 
 .40 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .50 
 .80 
 .80 
 .80 
 
 .80 
 .90 
 .90 
 .90 
 1.00 
 
 1.00 
 1.00 
 1.20 
 1.20 
 1.00 
 
 .80 
 
 .90 
 
 1.00 
 
 1.10 
 
 1.20 
 
 1.20 
 1.30 
 1.30 
 4.10 
 1.40 
 
 2.00 
 4.00 
 12.00 
 7.00 
 4.10 
 
 2.40 
 2.90 
 2.80 
 2.70 
 2.50 
 
 7.10 
 5.00 
 2.90 
 4.70 
 4.50 
 
 4.30 
 4.10 
 2.80 
 1.50 
 1.40 
 
 1.50 
 1.50 
 2.00 
 3.00 
 2.90 
 
 2.40 
 3.60 
 1.50 
 1.60 
 1.40 
 1.20 
 
 1.20 
 1.10 
 5.00 
 3.40 
 3.20 
 
 2.90 
 2.60 
 1.80 
 2.70 
 2.90 
 
 2.80 
 2.70 
 3.00 
 3.20 
 4.00 
 
 2.00 
 1.20 
 2.00 
 2.90 
 2.00 
 
 1.20 
 1.10 
 1.00 
 1.50 
 1.20 
 
 .70 
 2.90 
 2.00 
 1.80 
 1.50 
 2.00 
 
 4.00 
 5.00 
 8.00 
 10.00 
 4.50 
 
 4.00 
 8.10 
 3.40 
 2.70 
 2.40 
 
 2.00 
 3.40 
 2.90 
 3.40 
 2.70 
 
 3.20 
 2.00 
 1.50 
 1.20 
 1.10 
 
 1.00 
 
 1.20 
 
 1.00 
 
 .80 
 
 .70 
 
 .60 
 .40 
 .50 
 .40 
 .60 
 
 0.90 
 1.20 
 1.40 
 1.50 
 1.10 
 
 1.00 
 
 .80 
 
 .80 
 
 1:00 
 
 1.20 
 
 1.00 
 1.80 
 1.20 
 2.70 
 2.70 
 
 2.70 
 9.00 
 4.10 
 5.30 
 8.10 
 
 8.00 
 6.90 
 14.00 
 6.50 
 4.90 
 
 4.10 
 
 20.00 
 
 16.00 
 
 12.00 
 
 8.50 
 
 5.00 
 
 6.00 
 6.00 
 12.00 
 6.00 
 4.50 
 
 3.30 
 2.10 
 2.70 
 10.00 
 15.00 
 
 12.00 
 6.10 
 6.90 
 3.40 
 2.60 
 
 12.00 
 17.00 
 6.90 
 6.50 
 5.70 
 
 4.50 
 4.30 
 5.30 
 4.20 
 3.10 
 
 2.90 
 2.90 
 4.50 
 5.10 
 3.20 
 
 8.00 
 
 2 
 
 12.00 
 
 3 
 
 10.00 
 
 4 
 
 6.00 
 
 5 
 
 2.70 
 
 6 
 
 2.70 
 
 7. . 
 
 2.70 
 
 8 
 
 4.50 
 
 9 
 
 3.60 
 
 10 
 
 3.60 
 
 11 
 
 2.40 
 
 12 
 
 2.10 
 
 13 
 
 1.20 
 
 14 
 
 1.90 
 
 
 2.40 
 
 16 
 
 4.50 
 
 17 
 
 1.30 
 
 18 
 
 1.50 
 
 19 
 
 2.90 
 
 20 
 
 6.50 
 
 21 
 
 3.10 
 
 22 
 
 9.50 
 
 23 
 
 17.00 
 
 24 
 
 11.00 
 
 
 4.00 
 
 26 
 
 11.00 
 
 27 
 
 10.00 
 
 28 
 
 2.90 
 
 29 
 
 2.70 
 
 30 
 
 2.00 
 
 31 
 
 2.00 
 
 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 69 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 November 13-30. 
 December 
 
 1912, 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 5.15 
 8.45 
 
 .71 
 
 2.50 
 4.15 
 6.21 
 2.66 
 
 Run-off 
 (total in 
 acre-feet). 
 
 184.00 
 518.00 
 
 43.70 
 144. 00 
 256. 00 
 370. 00 
 164.00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 0.94 
 3.33 
 2.24 
 2.76 
 5.01 
 6.22 
 5.09 
 
 Run-off 
 (total in 
 acre-feet). 
 
 55.90 
 205.00 
 138. 00 
 164.00 
 308. 00 
 370. 00 
 313.00 
 
 2,530.00 
 
334 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements at station No. 70 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 21 
 
 Feet. 
 0.75 
 .73 
 
 Sec.-ft. 
 0.49 
 
 .17 
 
 Nov. 8 
 
 Feet. 
 0.97 
 .90 
 
 Sec.-ft. 
 0.93 
 
 Sept. 28 
 
 Dec. 11 
 
 .28 
 
 
 
 
 Note. — Bed of stream of gravel with some small cobbles; probably shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 70 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 -.. 
 
 
 
 
 
 
 0.64 
 
 0.80 
 .91 
 
 
 
 
 
 
 2 
 
 
 
 0.95 
 .90 
 
 .88 
 .80 
 
 .78 
 .86 
 
 
 
 0.70 
 
 
 0.80 
 
 
 
 3 
 
 
 
 0.98 
 1.15 
 
 .99 
 
 .79 
 
 
 
 
 
 4 
 
 
 0.62 
 .61 
 
 "**60 
 .60 
 .59 
 
 .59 
 .56 
 .75 
 .70 
 .65 
 
 .64 
 .61 
 
 
 
 
 .95 
 .90 
 
 ""."88" 
 
 .78 
 .87 
 .89 
 
 *.8G' 
 
 ""."84" 
 .85 
 
 "i."66" 
 .97 
 
 1.09 
 .96 
 .91 
 
 .87 
 .94 
 .89 
 .90 
 .86 
 
 .90 
 
 .88 
 .86 
 .85 
 
 .84 
 .81 
 
 .80 
 
 .78 
 .74 
 
 "".8G" 
 
 .78 
 .86 
 .82 
 .90 
 
 .88 
 
 "".'96' 
 1.02 
 1.21 
 
 "i.62" 
 
 "i.ii" 
 1.02 
 
 .94 
 "i."2i" 
 
 
 
 5 
 
 0.80 
 
 .80 
 .80 
 .81 
 
 1.39 
 
 .59 
 
 .95 
 
 .82 
 .88 
 
 ""."si" 
 
 0.94 
 
 ""."94" 
 
 .95 
 
 1.10 
 
 i.'i2" 
 
 1.14 
 1.01 
 
 .94 
 
 1.28 
 1.41 
 1.13 
 1.12 
 1.10 
 
 1.04 
 1.02 
 1.06 
 
 0.95 
 
 6 
 
 .95 
 
 7 
 
 .52 
 
 8 
 
 
 
 .60 
 
 1 00 
 
 9 
 
 .85 
 .84 
 
 .86 
 1.08 
 1.32 
 1.36 
 
 
 
 94 
 
 10 
 
 
 1.06 
 
 1.09 
 1.04 
 1.08 
 .90 
 .90 
 
 .95 
 
 
 91 
 
 11 
 
 .75 
 .74 
 
 .74 
 .74 
 .71 
 
 .71 
 
 
 1.04 
 
 .92 
 
 12 
 
 .89 
 
 
 .90 
 
 13 
 
 
 .89 
 1.01 
 
 .88 
 
 14 
 
 
 .70 
 
 .90 
 
 15 -- -- 
 
 .91 
 
 16 
 
 .68 
 
 .60 
 
 
 1.00 
 
 17 
 
 .94 
 1.34 
 .88 
 .92 
 
 .86 
 
 .87 
 .84 
 
 
 .85 
 
 .79 
 
 .81 
 
 18 
 
 
 .95 
 
 .99 
 
 1.04 
 
 1.04 
 1.03 
 1.04 
 1.19 
 
 .78 
 
 
 .90 
 
 19 
 
 .70 
 .70 
 
 .70 
 .69 
 .68 
 .68 
 .66 
 
 .66 
 .66 
 .65 
 
 .64 
 
 
 
 .78 
 .76 
 
 .86 
 
 1.00 
 
 20 
 
 
 .78 
 
 1.10 
 
 21 
 
 .74 
 
 .83 
 .84 
 .81 
 .79 
 
 .77 
 .74 
 .72 
 
 .72 
 
 1.02 
 
 22 
 
 .76 
 
 
 
 1.19 
 
 23 
 
 
 
 .72 
 .75 
 
 .74 
 
 .71 
 
 .84 
 
 
 24 
 
 .78 
 
 
 
 
 25 
 
 .90 
 .71 
 
 .85 
 
 .93 
 
 .87 
 .82 
 
 .88 
 
 
 .82 
 
 .79 
 .83 
 .78 
 .75 
 .74 
 .70 
 
 .95 
 
 .92 
 .92 
 1.02 
 1.02 
 .98 
 
 .80 
 
 26 
 
 1.31 
 1.28 
 1.26 
 
 .75 
 ""."70" 
 
 .78 
 .90 
 .74 
 
 1.18 
 
 27 
 
 
 28 
 
 1.00 
 
 
 .97 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 70 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.8 
 .8 
 .6 
 .4 
 .4 
 
 .4 
 .4 
 .6 
 .8 
 .6 
 
 11 
 
 
 0.5 
 .8 
 1.2 
 1.5 
 5.6 
 
 2.6 
 2.8 
 2.8 
 2.8 
 2.8 
 
 21 
 
 1.9 
 1.9 
 1.8 
 1.8 
 1.8 
 
 1.0 
 
 . .9 
 
 1.0 
 
 .9 
 
 .8 
 
 0.9 
 
 2... 
 
 
 12 
 
 
 22 
 
 .6 
 
 3 
 
 
 13 
 
 1.4 
 1.4 
 1.3 
 
 1.2 
 1.3 
 1.4 
 1.6 
 1.9 
 
 23 
 
 .6 
 
 4 
 
 
 14 
 
 24 
 
 .9 
 
 5... 
 
 
 15 
 
 25 
 
 .6 
 
 6 
 
 
 16 
 
 26 
 
 .6 
 
 7 
 
 
 17 
 
 27 
 
 .4 
 
 8 . 
 
 
 18 
 
 28 
 
 .4 
 
 9 
 
 
 19 
 
 29 
 
 .6 
 
 10 
 
 
 20 
 
 30 
 
 .5 
 
 
 
 
 31 
 
 .4 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 335 
 
 Daily discharge, in second-feet, at station No. 70 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .45 
 .40 
 .30 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .15 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .10 
 1.00 
 
 2.00 
 3.00 
 4.50 
 2.00 
 .80 
 
 .10 
 .10 
 .10 
 .10 
 
 0.50 
 1.05 
 .80 
 .70 
 .40 
 
 .35 
 .65 
 .65 
 .65 
 .56 
 
 .65 
 1.80 
 3.35 
 3.60 
 2.00 
 
 1.50 
 1.00 
 1.50 
 .70 
 .90 
 
 .^5 
 .70 
 .55 
 .60 
 .60 
 
 .95 
 .70 
 .50 
 .35 
 .70 
 3.00 
 
 2.00 
 1.50 
 1.20 
 2.20 
 1.25 
 
 .35 
 3.50 
 3.00 
 2.50 
 1.65 
 
 1.85 
 1.55 
 1.80 
 .80 
 .80 
 
 .90 
 1.00 
 1.05 
 1.25 
 1.55 
 
 1.55 
 1.50 
 1.55 
 1.45 
 2.30 
 
 3.25 
 
 3.05 
 2.90 
 2.00 
 1.50 
 
 2.00 
 2.00 
 2.00 
 3.00 
 3.85 
 
 3.00 
 
 2.00 
 1.20 
 1.00 
 1.05 
 
 .80 
 .75 
 .60 
 .40 
 .20 
 
 .10 
 .20 
 .35 
 .30 
 .30 
 
 .30 
 .30 
 .50 
 .35 
 .30 
 
 .30 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 0.05 
 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .10 
 .10 
 .20 
 .35 
 
 .35 
 .35 
 .35 
 .35 
 .35 
 
 .35 
 .80 
 .20 
 .20 
 .20 
 
 0.40 
 .85 
 2.00 
 1.50 
 1.05 
 
 .50 
 .70 
 .60 
 .45 
 .50 
 
 1.55 
 1.20 
 .75 
 1.35 
 1.00 
 
 .80 
 .60 
 .40 
 .35 
 .25 
 
 .30 
 .40 
 .50 
 .80 
 .50 
 
 .35 
 .55 
 .35 
 .25 
 .20 
 .10 
 
 0.10 
 .10 
 1.50 
 1.05 
 .80 
 
 .70 
 .70 
 .35 
 .70 
 
 .75 
 
 .70 
 .65 
 .60 
 .55 
 .60 
 
 .40 
 .35 
 .40 
 .65 
 .30 
 
 .20 
 .20 
 .15 
 .25 
 .20 
 
 .10 
 .55 
 .40 
 .30 
 .20 
 .20 
 
 1.00 
 2.00 
 3.00 
 4.00 
 1.30 
 
 1.15 
 1.85 
 1.10 
 
 .85 
 .80 
 
 .70 
 1.00 
 .75 
 .80 
 
 .65 
 
 .80 
 .70 
 .65 
 .60 
 .60 
 
 .55 
 .55 
 .45 
 .35 
 .30 
 
 .30 
 .20 
 .15 
 .15 
 .40 
 
 0.40 
 
 .40 
 .50 
 .55 
 .45 
 
 .40 
 .35 
 .35 
 .40 
 .40 
 
 .35 
 .65 
 .50 
 
 .80 
 .80 
 
 .70 
 1.50 
 
 .80 
 1.45 
 2.55 
 
 1.50 
 1.45 
 3.00 
 1.95 
 1.45 
 
 1.00 
 4.50 
 4.00 
 3.00 
 2.55 
 2.00 
 
 2.00 
 2.00 
 3.00 
 2.00 
 1.00 
 
 1.00 
 1.00 
 1.05 
 1.90 
 3.50 
 
 3.00 
 2.00 
 2.15 
 1.35 
 1.00 
 
 3.05 
 3.95 
 2.10 
 2.00 
 1.90 
 
 1.55 
 
 1.40 
 1.65 
 1.30 
 1.05 
 
 .90 
 .90 
 1.40 
 1.40 
 1.20 
 
 2.00 
 
 2 
 
 3.50 
 
 3 
 
 2.00 
 
 4 
 
 1.50 
 
 5 
 
 1.05 
 
 6 
 
 1.05 
 
 7 
 
 1.10 
 
 8 
 
 1.30 
 
 9 
 
 1.00 
 
 10 
 
 .85 
 
 11 
 
 12 
 
 .90 
 .80 
 
 13 
 
 .70 
 
 14 
 
 .80 
 
 15 
 
 .85 
 
 16 
 
 1.30 
 
 17 
 
 .45 
 
 18 
 
 19 
 
 .80 
 .30 
 
 20 
 
 1.90 
 
 21 
 
 1.40 
 
 22 
 
 2.45 
 
 23 
 
 4.00 
 
 24 
 
 3.00 
 
 25 
 
 .40 
 
 26 
 
 2.40 
 
 27 
 
 3.00 
 
 28 
 
 1.30 
 
 29 
 
 1.15 
 
 30 
 
 .60 
 
 31 
 
 .50 
 
 
 
 Note.— Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near 
 station No. 50. 
 
 Monthly discharge at station No. 70 at 2,700-foot level, near Hilo, Hawaii, for 1911-1912. 
 
 Month. 
 
 1911 
 November 13-30. 
 December 
 
 1912 
 
 January 
 
 February. . . : — 
 
 March 
 
 April 
 
 May 
 
 discharge 
 in second- 
 feet. 
 
 1.40 
 1.15 
 
 .19 
 
 .51 
 
 1.05 
 
 1.76 
 
 Run-off 
 (total in 
 acre-feet). 
 
 50.40 
 71.10 
 
 11.70 
 29.30 
 64.60 
 105.00 
 55.30 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 
 0.18 
 
 .68 
 
 .47 
 
 .92 
 
 1.31 
 
 1.79 
 
 1.43 
 
 ,93 
 
 Run-off 
 (total in 
 acre-feet). 
 
 10.70 
 41.80 
 28.90 
 54.70 
 80.60 
 107.00 
 87.90 
 
 678.00 
 
 Discharge measurements at station No. 71 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 21 
 
 Feet. 
 0.61 
 .60 
 
 Sec.-ft. 
 
 
 Nov. 8 
 
 Feet. 
 0.65 
 .60 
 
 Sec.-ft. 
 0.05 
 
 Sept. 28 
 
 Dec. 11 . . 
 
 .07 
 
 
 
 
 
 Note.— Bed of stream of silt, sand and gravel; shifting. One channel at all stages. 
 
336 WATER RESOURCES OP HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 71 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.58 
 
 0.62 
 .71 
 
 
 
 
 
 
 2 
 
 
 
 0.71 
 .70 
 .60 
 .65 
 
 .62 
 .76 
 
 
 
 0.58 
 
 
 0.63 
 
 
 
 3 
 
 
 
 0.77 
 
 .88 
 .75 
 
 1.08 
 
 
 
 
 _ 
 
 4 
 
 
 (a) 
 
 (a) 
 
 W 
 a 
 
 (a) 
 
 (a) 
 (a) 
 0.60 
 .60 
 .59 
 
 .59 
 .59 
 
 
 
 
 .68 
 .65 
 
 "".'64* 
 .62 
 .68 
 .71 
 
 ""."68' 
 
 ""64' 
 .67 
 
 "6." 69' 
 
 .69 
 .78 
 .69 
 .65 
 
 .61 
 .68 
 .62 
 .64 
 .61 
 
 .64 
 .61 
 .59 
 
 .58 
 
 .67 
 .62 
 
 .62 
 .60 
 .61 
 
 "".~W 
 
 .57 
 .62 
 .61 
 .63 
 
 .63 
 
 "'"."68" 
 .72 
 
 .88 
 
 '.72' 
 
 '"."72" 
 
 .66 
 
 .63 
 "".'74' 
 
 
 
 5 
 
 0.65 
 
 .65 
 .65 
 
 .68 
 
 1.08 
 
 .50 
 
 .78 
 
 .75 
 .70 
 
 """.'68' 
 
 0.71 
 
 """.*67" 
 .62 
 
 .76 
 
 "*."70" 
 
 .71 
 .64 
 .64 
 
 .76 
 
 .85 
 .72 
 .70 
 .70 
 
 .67 
 .66 
 .70 
 
 0.62 
 
 6 
 
 7 
 
 .60 
 .60 
 
 8 
 
 
 
 .50 
 
 .62 
 
 9 . 
 
 .83 
 .81 
 
 .88 
 
 .98 
 
 .94 
 
 1.03 
 
 
 
 .62 
 
 10 .. 
 
 
 .74 
 
 .71 
 
 .74 
 .72 
 .71 
 .75 
 
 .78 
 
 
 .61 
 
 11 
 
 .65 
 .64 
 .64 
 .64 
 .64 
 
 .64 
 
 
 .72 
 
 .60 
 
 12 
 
 .73 
 
 
 .60 
 
 13 
 
 
 .71 
 .71 
 
 .54 
 
 14 
 
 
 .60 
 
 .59 
 
 15 
 
 .60 
 
 16 
 
 .60 
 
 .52 
 
 
 .62 
 
 17 
 
 1.11 
 
 1.11 
 
 .91 
 
 1.03 
 
 .90 
 .85 
 .90 
 
 
 .70 
 
 .53 
 
 .52 
 
 18 
 
 
 .78 
 .79 
 .79 
 
 .79 
 .80 
 .82 
 .90 
 
 .58 
 
 
 .60 
 
 19 
 
 .64 
 .64 
 
 .64 
 .62 
 .61 
 .61 
 ,60 
 
 .60 
 .61 
 .58 
 .55 
 .54 
 
 
 
 .64 
 .65 
 
 .62 
 
 .62 
 
 20 
 
 
 .60 
 
 .70 
 
 21 
 
 .64 
 
 .58 
 .81 
 .64 
 .64 
 
 .62 
 .61 
 .61 
 .60 
 
 .66 
 
 22 
 
 .65 
 
 
 
 .75 
 
 23 
 
 
 
 .61 
 .65 
 .64 
 
 .60 
 .65 
 
 
 24 
 
 .68 
 
 
 
 
 25 
 
 .95 
 
 .78 
 
 .80 
 
 .72 
 .67 
 .64 
 .62 
 .68 
 
 
 .69 
 
 .54 
 .65 
 .60 
 .62 
 .61 
 .59 
 
 .64 
 
 .64 
 .62 
 .66 
 .65 
 .62 
 
 .65 
 
 26 
 
 .91 
 
 .89 
 .85 
 
 .62 
 '"'.'59* 
 
 .61 
 .70 
 .61 
 
 .82 
 
 27 
 
 
 28 
 
 .62 
 
 29 
 
 .62 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a 
 
 Channt 
 
 ldry. 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 71 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.05 
 .05 
 .05 
 .05 
 .10 
 
 .10 
 .10 
 .10 
 .15 
 .10 
 
 11 
 
 
 0.10 
 .15 
 .15 
 .35 
 
 1.00 
 
 .30 
 .40 
 .30 
 .40 
 .45 
 
 21 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.30 
 
 2 
 
 
 12 
 
 
 22 
 
 .30 
 
 3 
 
 
 13 
 
 0.10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 23 
 
 .30 
 
 4.. . 
 
 
 14 
 
 24 
 
 .30 
 
 5... 
 
 
 15 
 
 25 
 
 .25 
 
 6... . 
 
 
 16 
 
 26 
 
 .25 
 
 7 ... 
 
 
 17 
 
 27 
 
 .25 
 
 8 
 
 
 18 
 
 28 
 
 .25 
 
 9 
 
 
 19 
 
 29 
 
 .25 
 
 10 
 
 
 20 
 
 30 
 
 .25 
 
 
 
 
 31 
 
 .25 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 387 
 
 Daily discharge, in second-feet, at station No. 71 at 2,700-foot level, near Eilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 fa) 
 
 («). 
 (a) 
 (a) 
 (■) 
 
 (a) 
 (a) 
 (a) 
 (a) 
 (a) 
 
 (a) 
 
 (a) 
 
 0.05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .10 
 
 .30 
 .50 
 .70 
 .60 
 .40 
 
 .20 
 .20 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .15 
 .20 
 .25 
 .20 
 
 .30 
 .40 
 .35 
 .45 
 .50 
 
 .50 
 .50 
 .50 
 .30 
 
 .45 
 
 .30 
 .25 
 .30 
 .20 
 .20 
 
 .10 
 .10 
 .05 
 .05 
 .10 
 .50 
 
 0.30 
 .20 
 .15 
 .30 
 .15 
 
 .50 
 .60 
 .50 
 .40 
 .15 
 
 .10 
 .15 
 .10 
 .10 
 .15 
 
 .15 
 .20 
 .20 
 .20 
 
 .20 
 
 .20 
 .20 
 .20 
 .30 
 .30 
 
 .30 
 .30 
 .25 
 .20 
 .10 
 
 0.10 
 .20 
 .30 
 .40 
 .50 
 
 .40 
 .30 
 .20 
 .20 
 .20 
 
 .20 
 .15 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .20 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 
 "'.05' 
 '"'.'65' 
 
 .05 
 .10 
 .05 
 
 0.05 
 .10 
 .20 
 .20 
 .20 
 
 .15 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 .10 
 
 .10 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 .20 
 .10 
 .10 
 
 .10 
 .05 
 .05 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .10 
 .05 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.30 
 .40 
 .50 
 .60 
 .10 
 
 .10 
 .20 
 .10 
 .10 
 .10 
 
 .05 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.10 
 .05 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .30 
 .20 
 .10 
 .10 
 
 .20 
 .30 
 .60 
 .30 
 .10 
 
 .05 
 .70 
 .50 
 .30 
 .15 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .05 
 .15 
 .30 
 
 .20 
 .10 
 .10 
 .05 
 .05 
 
 .15 
 .30 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .05 
 
 .05 
 .05 
 .10 
 .05 
 .05 
 
 0.20 
 
 2 
 
 .50 
 
 3 
 
 .20 
 
 4 
 
 .10 
 
 5 
 
 .05 
 
 6 
 
 .05 
 
 7 
 
 .05 
 
 8 
 
 .05 
 
 9 
 
 .05 
 
 10 
 
 .05 
 
 11 
 
 .05 
 
 12 
 
 .05 
 
 13 
 
 .05 
 
 14 
 
 .05 
 
 15 
 
 .05 
 .05 
 
 17 
 
 .05 
 
 
 .05 
 
 19 
 
 .05 
 
 20 
 
 .10 
 
 21 
 
 .10 
 
 22 
 
 .15 
 
 23 
 
 .30 
 
 24 
 
 .10 
 
 25 
 
 .05 
 
 26 
 
 .20 
 
 27 
 
 .20 
 
 28 
 
 .05 
 
 29 
 
 .05 
 
 
 .05 
 
 31 
 
 .05 
 
 
 
 a Channel dry. 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfal 1 record at camp near 
 station No. 50. 
 
 Monthly discharge at station No. 71 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 November 13-30. 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 discharge 
 in second- 
 feet. 
 
 0.10 
 .24 
 
 .07 
 .12 
 .25 
 .24 
 .15 
 
 Run-off 
 (total in 
 acre-feet). 
 
 3.57 
 14.70 
 
 4.30 
 6.90 
 15.40 
 14.30 
 9.22 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November , 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.05 
 .10 
 .08 
 .12 
 .16 
 .11 
 .10 
 
 Run-off 
 (total in 
 acre-feet). 
 
 2.98 
 6.15 
 4.92 
 7.14 
 9.84 
 6.55 
 6.15 
 
 93.80 
 
 14694°— wsp 336—14- 
 
 -22 
 
338 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Discharge measurements at station No. 72 at 2,700-foot level, near Kilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 21 
 
 Feet. 
 0.91 
 
 .88 
 
 Sec. -ft. 
 
 
 Nov. 8 
 
 Feet. 
 1.00 
 .96 
 
 Sec.-ft. 
 0.04 
 
 Set)t. 28 
 
 Dec. 11 
 
 
 
 
 
 
 
 Note. — Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 
 
 Daily gage height; in feet, at station No. 72 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.82 
 
 0.95 
 1.07 
 
 
 
 
 
 
 2 
 
 
 
 1.01 
 
 1.00 
 
 .96 
 
 .95 
 
 .92 
 1.08 
 
 
 
 0.90 
 
 
 0.96 
 
 
 
 3 
 
 
 
 1.02 
 
 .95 
 
 1.05 
 
 1.26 
 
 
 
 
 
 4 
 
 
 (a) 
 («) 
 
 -(a)" 
 
 (a) 
 (a) 
 
 («) 
 
 (a) 
 
 0.92 
 .90 
 
 .84 
 
 (a) 
 (a) 
 
 
 
 
 1.09 
 1.05 
 
 "".'99" 
 
 .95 
 
 1.00 
 
 1.06 
 
 'i."66' 
 '"."99' 
 
 1.01 
 
 "i.'os" 
 
 1.07 
 
 1.11 
 
 1.02 
 
 .99 
 
 .96 
 1.03 
 
 .99 
 1.00 
 
 .97 
 
 .99 
 .97 
 .94 
 .91 
 
 1.00 
 .94 
 
 .90 
 
 .88 
 .89 
 
 ""'."98" 
 
 .94 
 1.02 
 1.00 
 1.02 
 
 1.02 
 
 "i."08" 
 1.15 
 1.28 
 
 "i.'io" 
 'i.'io' 
 
 .98 
 .94 
 
 "i.'io* 
 
 
 
 5 
 
 0.98 
 
 .98 
 
 .98 
 
 1.00 
 
 1.38 
 
 .79 
 
 1.09 
 
 1.05 
 1.00 
 
 "".91 
 
 1.00 
 
 ""99' 
 1.00 
 1.15 
 
 "i.'os" 
 
 1.-16 
 1.01 
 .99 
 
 1.12 
 1.25 
 1.10 
 1.08 
 1.08 
 
 1.02 
 1.02 
 1.09 
 
 1.00 
 
 6 
 
 1.00 
 
 7 
 
 1.00 
 
 8 
 
 
 
 .80 
 
 1.00 
 
 9 
 
 .95 
 1.02 
 
 1.09 
 1.16 
 1.35 
 1.42 
 
 
 
 1.00 
 
 10 
 
 
 1.00 
 
 1.05 
 1.04 
 1.03 
 1.00 
 1.01 
 
 .95 
 
 
 1.00 
 
 11 
 
 .98 
 .98 
 .96 
 .95 
 .95 
 
 .95 
 
 
 1.07 
 
 .96 
 
 12 
 
 .93 
 
 
 .95 
 
 13 
 
 
 1.00 
 1.01 
 
 .95 
 
 14 
 
 
 .90 
 
 .96 
 
 15 
 
 1.00 
 
 16 
 
 .88 
 
 .77 
 
 
 1.02 
 
 17 
 
 .99 
 1.42 
 1.12 
 1.15 
 
 1.11 
 1.07 
 1.11 
 
 
 .79 
 
 .92 
 
 1.00 
 
 18 
 
 
 1.02 
 1.03 
 1.03 
 
 1.06 
 1.11 
 1.14 
 1.20 
 
 .si 
 
 
 1.00 
 
 19 
 
 .94 
 .94 
 
 .94 
 .92 
 .91 
 .91 
 .90 
 
 .90 
 .90 
 
 .88 
 .85 
 .84 
 
 
 
 .72 
 .71 
 
 .99 
 
 1.00 
 
 20 
 
 
 .71 
 
 1.12 
 
 21 
 
 .90 
 
 .89 
 .91 
 .90 
 .90 
 
 .90 
 .89 
 .89 
 .93 
 
 1.02 
 
 22 
 
 .90 
 
 
 
 1.20 
 
 23 
 
 
 
 .88 
 .92 
 .90 
 
 .85 
 .95 
 
 
 24 
 
 .95 
 
 
 
 
 25 
 
 1.00 
 
 .88 
 
 1.04 
 
 1.01 
 .96 
 .93 
 .91 
 .99 
 
 
 .92 
 
 .99 
 .94 
 .92 
 .95 
 .92 
 .90 
 
 1.00 
 
 .98 
 
 .99 
 
 1.03 
 
 1.04 
 
 1.01 
 
 1.05 
 
 26 
 
 1.30 
 1.21 
 1.21 
 
 .90 
 
 .89 
 
 .68 
 .90 
 
 .68 
 
 1.09 
 
 27 
 
 
 28 
 
 1.00 
 
 29 
 
 1.00 
 
 30 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Monthly discharge at station No. 
 
 a Channel dry. 
 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 November. 
 December. 
 
 January . . 
 February. 
 
 March 
 
 April 
 
 May 
 
 1912. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 00. 10 
 a. 15 
 
 .02 
 .02 
 .15 
 .15 
 
 Run-off 
 (total in 
 acre-feet). 
 
 5.95 
 9.22 
 
 1.00 
 1.20 
 9.30 
 8.90 
 4.00 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year. 
 
 Mean 
 discharge 
 in second- 
 
 0.05 
 .07 
 
 .12 
 .11 
 .10 
 
 Run-off 
 (total in 
 
 acre-feet). 
 
 3.00 
 4.20 
 4.80 
 5.40 
 7.50 
 6.70 
 5.90 
 
 61.90 
 
 a Estimated. 
 
 Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
ISLAND OF HAWAII. 
 
 339 
 
 Discharge measurements at station No. 73 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Aug. 21. 
 Sept. 20. 
 
 height. 
 
 Feet. 
 0.74 
 .60 
 
 Dis- 
 charge. 
 
 Sec-ft. 
 
 0.39 
 
 
 
 Date. 
 
 Nov. 8. 
 Dec. 28. 
 
 Gage 
 height. 
 
 Feet. 
 
 0.88 
 
 .84 
 
 Dis- 
 charge. 
 
 Sec-ft. 
 0.40 
 1.00 
 
 Note.— Bed of stream of silt, sand, and gravel; shifting. One channel at all stagesr 
 
 Daily gage height, in feet, at station No. 73 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.55 
 
 0.78 
 
 .87 
 
 
 
 
 
 
 2 
 
 
 
 1.08 
 
 1.01 
 
 .94 
 
 .80 
 
 .75 
 
 .86 
 
 
 
 0.68 
 
 
 0.79 
 
 
 
 3 
 
 
 
 1.09 
 1.42 
 1.14 
 
 1.24 
 
 
 
 
 
 4 
 
 
 0.55 
 .55 
 
 ""."52" 
 
 .52 
 .51 
 
 .51 
 .50 
 .75 
 .64 
 .62 
 
 .61 
 .60 
 
 
 
 
 .92 
 
 .88 
 
 ""."si" 
 
 .80 
 .90 
 .91 
 
 ""."89" 
 
 "'"."88" 
 .97 
 
 "i.'oo" 
 1.00 
 
 1.09 
 .91 
 .89 
 
 .86 
 .97 
 .94 
 .95 
 .90 
 
 .94 
 
 .88 
 .81 
 .76 
 
 .80 
 
 .74 
 
 .72 
 .68 
 .66 
 
 "".'76' 
 
 .67 
 .84 
 .80 
 .87 
 
 .84 
 
 ".85" 
 
 1.01 
 1.30 
 
 "i*08" 
 
 ""i."06" 
 
 .82 
 
 .76 
 
 "i.'is" 
 
 
 
 5 
 
 0.75 
 
 .75 
 .75 
 .80 
 
 1.15 
 
 .50 
 
 .90 
 
 .88 
 .83 
 
 '".'73' 
 
 0.95 
 
 ""."si" 
 
 .85 
 1.25 
 
 "i.'oi' 
 
 1.16 
 
 .88 
 .82 
 
 1.35 
 1.51 
 1.16 
 1.02 
 1.01 
 
 .95 
 .94 
 .99 
 
 0.82 
 
 6 
 
 .82 
 
 7 
 
 .85 
 
 8 
 
 
 
 .53 
 
 .94 
 
 9 
 
 .86 
 .84 
 
 .86 
 1.15 
 1.51 
 
 1.56 
 
 
 
 .91 
 
 10 
 
 
 1.40 
 
 1.30 
 1.37 
 1.28 
 .90 
 .94 
 
 .81 
 
 
 .81 
 
 11 
 
 .70 
 .70 
 .68 
 .68 
 .65 
 
 .65 
 
 
 1.11 
 
 .78 
 
 12 
 
 .79 
 
 
 .75 
 
 13 
 
 
 .85 
 .99 
 
 .70 
 
 14 
 
 
 .60 
 
 .72 
 
 15 
 
 .75 
 
 16 
 
 .60 
 
 .51 
 
 
 .90 
 
 17 
 
 .96 
 1.56 
 
 .83 
 1.02 
 
 .82 
 .80 
 .82 
 
 
 .90 
 
 .78 
 
 .80 
 
 18 
 
 
 .95 
 .98 
 
 .98 
 
 .98 
 
 .98 
 
 .98 
 
 1.00 
 
 .56 
 
 
 .82 
 
 19 
 
 .65 
 .64 
 
 .64 
 .64 
 .62 
 .62 
 .61 
 
 .61 
 .62 
 .58 
 .56 
 .55 
 
 
 
 .79 
 
 .78 
 
 .88 
 
 .91 
 
 20 
 
 
 .73 
 
 1.16 
 
 21 
 
 .72 
 
 .74 
 .75 
 .69 
 .66 
 
 .64 
 .64 
 .61 
 .64 
 
 .92 
 
 22. 
 
 .65 
 
 
 
 1.20 
 
 23 
 
 
 
 .72 
 .75 
 .74 
 
 .65 
 
 .85 
 
 
 24 
 
 .66 
 
 
 
 
 25 
 
 .97 
 
 .84 
 
 .85 
 
 1.00 
 
 .98 
 .79 
 .76 
 .86 
 
 
 .74 
 
 .80 
 .75 
 .72 
 .75 
 .72 
 .68 
 
 .84 
 
 .82 
 
 .82 
 
 1.00 
 
 1.00 
 
 .85 
 
 .84 
 
 26 
 
 1.08 
 1.03 
 1.01 
 
 .62 
 "".*60" 
 
 .81 
 .91 
 
 .81 
 
 1.00 
 
 27 
 
 
 28 
 
 .83 
 
 29 
 
 .84 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 73 at 
 
 for 1911. 
 
 ,700-foot level, near Hilo, Hawaii, 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 
 .2 
 .2 
 .2 
 
 11 
 
 
 0.1 
 
 .4 
 
 .8 
 
 1.2 
 
 3.6 
 
 1.7 
 2.0 
 1.7 
 2.1 
 2.2 
 
 21 
 
 1.2 
 1.2 
 1.2 
 1.1 
 1.1 
 
 .5 
 .2 
 .2 
 .2 
 .2 
 
 1.0 
 
 2 
 
 
 12 
 
 
 22 
 
 .7 
 
 3 
 
 
 13 
 
 1.2 
 
 .9 
 .8 
 
 .7 
 
 .8 
 
 1.0 
 
 1.1 
 
 1.2 
 
 23 
 
 .6 
 
 4 
 
 
 14 
 
 24 
 
 1.0 
 
 5 
 
 
 15 
 
 25 
 
 .6 
 
 6 
 
 
 16 
 
 26 
 
 .5 
 
 7 
 
 
 17... 
 
 27 
 
 .5 
 
 8 
 
 
 18 
 
 28 .. 
 
 .5 
 
 9 
 
 
 19 
 
 29.. 
 
 .6 
 
 10 
 
 
 20 
 
 30... 
 
 .6 
 
 
 
 
 31 
 
 
 
 
 
 
340 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 73 at 2,700-foot level, near Hilo, Hawaii. 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.4 
 .4 
 .4 
 .4 
 .4 
 
 .4 
 .4 
 .5 
 .4 
 .3 
 
 .2 
 .2 
 .2 
 .2 
 .1 
 
 0.1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 .4 
 .1 
 .1 
 
 .1 
 .1 
 .1 
 .1 
 .5 
 
 1.0 
 2.5 
 4.0 
 2.5 
 1.1 
 
 .6 
 .5 
 .5 
 .5 
 
 1.0 
 1.5 
 1.2 
 1.0 
 .5 
 
 .4 
 .7 
 .7 
 .7 
 .6 
 
 .7 
 1.8 
 3.5 
 3.7 
 2.8 
 
 1.9 
 1.0 
 3.7 
 .6 
 1.3 
 
 .6 
 .5 
 .6 
 .6 
 .6 
 
 1.2 
 
 1.1 
 
 .5 
 
 .4 
 
 .7 
 
 3.0 
 
 2.0 
 1.8 
 1.6 
 3.0 
 1.8 
 
 2.2 
 4.0 
 3.5 
 3.0 
 2.9 
 
 2.4 
 2.8 
 2.3 
 .8 
 1.0 
 
 1.0 
 1.0 
 1.0 
 
 1.1 
 1.1 
 
 1.1 
 1.1 
 1.1 
 
 1.2 
 1.4 
 
 1.5 
 1.3 
 1.2 
 1.0 
 1.5 
 
 1.5 
 1.5 
 1.5 
 1.5 
 
 1.8 
 
 1.5 
 1.0 
 .5 
 .5 
 
 .5 
 
 .5 
 .5 
 .5 
 .5 
 .5 
 
 .5 
 .4 
 .3 
 .2 
 .1 
 
 '"6.3 
 
 .5 
 .8 
 .5 
 
 0.4 
 
 .7 
 
 1.2 
 
 1.0 
 
 .8 
 
 .7 
 .6 
 .4 
 .3 
 .3 
 
 1.6 
 1.0 
 .6 
 1.2 
 1.0 
 
 .9 
 .8 
 .6 
 .5 
 .4 
 
 .4 
 .4 
 .5 
 .9 
 .3 
 
 .5 
 .4 
 .3 
 .4 
 .3 
 .2 
 
 0.1 
 .2 
 
 1.5 
 .9 
 
 .7 
 
 .6 
 .6 
 .5 
 
 .8 
 .8 
 
 .8 
 .8 
 .8 
 .7 
 1.1 
 
 .5 
 .4 
 .5 
 
 .7 
 .4 
 
 .3 
 .3 
 .3 
 .4 
 .3 
 
 .1 
 .6 
 .5 
 .4 
 .3 
 .2 
 
 1.5 
 2.0 
 3.0 
 4.0 
 1.2 
 
 1.2 
 
 1.6 
 
 .8 
 .8 
 .8 
 
 .7 
 1.1 
 1.0 
 1.0 
 
 .8 
 
 1.0 
 
 .7 
 .5 
 .4 
 .4 
 
 .3 
 .4 
 .2 
 .1 
 .1 
 
 .1 
 
 '.1 
 .1 
 
 .5 
 
 0.5 
 .5 
 .5 
 .5 
 .3 
 
 .3 
 .2 
 .1 
 .2 
 
 .2 
 
 .1 
 .6 
 .5 
 
 .7 
 .7 
 
 .6 
 1.2 
 
 .6 
 1.2 
 2.4 
 
 2.5 
 1.5 
 3.5 
 1.4 
 .6 
 
 .4 
 .4 
 .3 
 .3 
 1.9 
 1.0 
 
 2.0 
 1.5 
 3.0 
 1.0 
 1.0 
 
 ...... 
 
 .6 
 2.2 
 4.0 
 
 3.5. 
 1.2 
 
 1.8 
 .7 
 .6 
 
 2.6 
 3.4 
 1.8 
 1.3 
 1.2 
 
 1.0 
 1.0 
 1.2 
 1.0 
 .6 
 
 .6 
 
 .6 
 
 1.2 
 
 1.2 
 
 .6 
 
 2.0 
 3.5 
 2.5 
 1 5 
 
 2 
 
 3 
 
 4 '.. 
 
 5 
 
 .6 
 6 
 
 6 
 
 7 
 
 .6 
 
 8 
 
 1 
 
 9 
 
 g 
 
 10 
 
 5 
 
 11 
 
 4 
 
 12 
 
 4 
 
 13 
 
 .2 
 
 14 
 
 .3 
 
 15 
 
 .4 
 
 16 
 
 .8 
 
 17 
 
 .5 
 
 18 
 
 .6 
 
 19 
 
 .8 
 
 20 
 
 1.8 
 
 21 
 
 .9 
 
 22 
 
 2.0 
 
 23 
 
 3.5 
 
 24 
 
 2.0 
 
 25 
 
 .6 
 
 26 
 
 1.2 
 
 27 
 
 1.0 
 
 28 
 
 .6 
 
 29 
 
 .6 
 
 30 
 
 .5 
 
 31 
 
 .5 
 
 
 
 Note. — Daily discha 
 charge for days for wh' 
 
 e determined from rating curve fairly well denned except for flood stages. Dis- 
 gage heights are missing estimated from diagram prepared from record of daily 
 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 73 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 November 13-30.. 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 0.82 
 
 .21 
 .55 
 1.26 
 1.76 
 .55 
 
 Run-off 
 (total in 
 acre-feet). 
 
 29.50 
 48.50 
 
 12.90 
 31.60 
 77.50 
 105. 00 
 33.80 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November. 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 0.10 
 .63 
 .55 
 .88 
 .83 
 1.43 
 1.07 
 
 ,82 
 
 Run-off 
 (total in 
 acre-feet). 
 
 5.95 
 38.70 
 33.80 
 52.40 
 51.00 
 85.10 
 65.80 
 
 594.00 
 
 Discharge measurements at station No. 74 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 21 
 
 Feet. 
 1.78 
 1.44 
 
 Sec.-ft. 
 5.45 
 1.48 
 
 Nov. 8 
 
 Feet. 
 2.04 
 2.12 
 
 Sec.-ft. 
 10.7 
 
 Sept. 28 
 
 Dec. 28 
 
 13.6 
 
 
 
 
 Note.— Bed of stream in exposed bed rock. Section near gage fairly smooth. Permanent. Onechannel 
 at low stage, two channels at intermediate stages, and one channel at high stages. 
 
ISLAND OF HAWAII. 
 
 341 
 
 Daily gage height, in feet, at station No. 74 at2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.] 
 
 Day. 
 
 Tan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 1.40 
 
 1.82 
 1.93 
 
 
 
 
 
 
 
 
 
 2.28 
 2.18 
 2.10 
 
 1.88 
 
 1.75 
 1.92 
 
 
 
 1.56 
 
 
 1.76 
 
 
 
 3 
 
 
 
 1.96 
 2.00 
 2.29 
 
 2.16 
 
 
 
 
 
 4 
 
 
 1.20 
 1.20 
 
 "i."i8* 
 
 1.18 
 1.16 
 
 1.15 
 1.14 
 1.68 
 1.58 
 1.44 
 
 1.34 
 
 
 
 
 2.10 
 1.90 
 
 "i.'so* 
 
 1.81 
 1.80 
 1.81 
 
 "i.'so* 
 
 "i.*94* 
 2.00 
 
 "*2." 40* 
 
 2.00 
 2.64 
 2.20 
 2.00 
 
 1.79 
 2.18 
 1.97 
 1.90 
 1.77 
 
 1.97 
 1.89 
 1.80 
 1.78 
 
 1.82 
 1.77 
 
 1.68 
 1.62 
 1.65 
 
 "i.*72* 
 
 1.70 
 2.00 
 1.73 
 1.94 
 
 2.05 
 
 "2."06* 
 2.34 
 2.82 
 
 "2*55* 
 
 '*2.*62" 
 2.15 
 
 1.88 
 "2."60" 
 
 
 
 5 
 
 1.60 
 
 1.60 
 1.60 
 1.65 
 
 2.02 
 
 1.33 
 
 1.98 
 
 1.91 
 1.90 
 
 "i.'88" 
 
 2.36 
 
 "2. 62" 
 2.02 
 2.34 
 
 "2." 44* 
 2.50 
 2.18 
 2.01 
 
 2.67 
 3.22 
 2.34 
 2.64 
 2.27 
 
 2.23 
 2.23 
 2.43 
 
 2.00 
 
 6 
 
 1.95 
 
 7 
 
 2.08 
 
 8 
 
 
 
 1.52 
 
 2.30 
 
 9 
 
 1.91 
 1.91 
 
 1.96 
 
 2.52 
 2.59 
 2.69 
 
 
 
 2.14 
 
 10 
 
 
 2.21 
 
 2.40 
 2.10 
 2.09 
 2.08 
 2.09 
 
 1.75 
 
 
 2.00 
 
 11 ... . 
 
 1.50 
 1.50 
 1.50 
 
 1.48 
 1.40 
 
 
 2.58 
 
 1.88 
 
 12 
 
 1.64 
 
 
 1.80 
 
 13 
 
 
 1.90 
 2.20 
 
 1.71 
 
 14 
 
 
 1.60 
 
 1.74 
 
 15 
 
 1.85 
 
 
 
 1.40 
 
 
 2.10 
 
 17 
 
 2.47 
 2.66 
 1.99 
 2.27 
 
 1.98 
 1.86 
 2.01 
 
 
 1.81 
 
 1.81 
 
 1.98 
 
 
 
 1.60 
 1.61 
 1.64 
 
 1.62 
 1.63 
 1.57 
 1.70 
 
 1.78 
 
 
 1.90 
 
 19 
 
 1.35 
 1.32 
 
 1.31 
 1.30 
 1.30 
 1.30 
 1.30 
 
 1.30 
 1.30 
 1.28 
 1.26 
 1.25 
 
 
 
 1.68 
 1.66 
 
 1.98 
 
 2.10 
 
 
 
 1.70 
 
 2.80 
 
 21 
 
 1.78 
 
 1.64 
 1.66 
 1.59 
 1.56 
 
 1.50 
 1.45 
 1.44 
 1.42 
 
 2.05 
 
 22 
 
 1.61 
 
 
 
 2.85 
 
 
 
 
 1.62 
 1.67 
 1.65 
 
 1.61 
 1.94 
 
 
 24 . 
 
 1.72 
 
 
 
 
 25... 
 
 2.20 
 1.91 
 
 1.71 
 
 1.99 
 1.82 
 1.74 
 1.71 
 1.79 
 
 
 1.89 
 
 1.81 
 1.83 
 1.80 
 1.75 
 1.68 
 1.61 
 
 2.01 
 
 1.98 
 1.90 
 2.01 
 2.20 
 1.94 
 
 1.85 
 
 26 
 
 1.71 
 1.70 
 1.74 
 
 1.60 
 
 "i'.m 
 
 2.08 
 2.21 
 2.08 
 
 1.92 
 
 27 
 
 
 28 
 
 2.12 
 
 29 
 
 2.19 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 74 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 3.64 
 3.36 
 3.08 
 2.80 
 3.08 
 
 3.08 
 3.08 
 4.06 
 4.52 
 4.06 
 
 11 
 
 
 3.08 
 
 9.84 
 
 21.00 
 
 35.20 
 
 66.00 
 
 20.40 
 22.50 
 20.40 
 23.40 
 26.00 
 
 21 
 
 23.40 
 22.20 
 21.00 
 20.10 
 19.20 
 
 9.60 
 9.20 
 7.60 
 4.20 
 4.06 
 
 9.60 
 
 2 
 
 
 12 
 
 
 22 
 
 3.50 
 
 3 
 
 
 13 
 
 14.40 
 12.30 
 13.50 
 
 14. 40 
 16.50 
 18.60 
 60.00 
 24.80 
 
 23 
 
 3.36 
 
 4 
 
 
 14 
 
 24 
 
 9.60 
 
 5 
 
 
 15 
 
 25 
 
 5.80 
 
 6 
 
 
 16 
 
 26 
 
 2.80 
 
 7 
 
 
 17 
 
 27 
 
 1.80 
 
 8 
 
 
 18... 
 
 28 
 
 1.80 
 
 9 
 
 
 19 
 
 29 
 
 5.80 
 
 10 
 
 
 20 
 
 30 
 
 4.20 
 
 
 
 
 31 
 
 2.80 
 
 
 
 
 
342 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 74 at 2,700-foot level, near Eilo, Hawaii 
 
 for 1912. 
 
 Day. 
 
 l 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 
 12 
 13 
 14, 
 15. 
 
 16, 
 17 
 
 18, 
 19. 
 20, 
 
 21. 
 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 Jan. 
 
 2.80 
 2.80 
 2.80 
 2.80 
 2.80 
 
 2.80 
 2.80 
 3.50 
 3.00 
 2.40 
 
 1.80 
 1.80 
 1.80 
 1.70 
 1.10 
 
 1.00 
 .90 
 .90 
 
 .60 
 .60 
 
 .50 
 .50 
 .40 
 .40 
 
 Feb. 
 
 0.40 
 .40 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .30 
 .30 
 .20 
 
 .20 
 
 .20 
 
 3.90 
 
 2.60 
 
 1.40 
 
 1.00 
 
 .80 
 
 .70 
 
 .40 
 
 1.00 
 
 20.00 
 40.00 
 56.00 
 30.00 
 15.00 
 
 7.80 
 6." 00 
 5.00 
 5.00 
 
 11.00 
 17.00 
 14.00 
 12.00 
 7.20 
 
 5.00 
 8.00 
 7.90 
 7.80 
 7.80 
 
 25.00 
 28.00 
 32.00 
 29.00 
 
 26.00 
 23.00 
 30.00 
 9.40 
 17.00 
 
 9.20 
 6.90 
 9.80 
 7.10 
 4.40 
 
 9.40 
 6.20 
 4.80 
 4.40 
 5.60 
 30.00 
 
 Apr. 
 
 15.00 
 11.00 
 8.80 
 9.60 
 18.00 
 
 14.00 
 30.00 
 28.00 
 25.00 
 15.00 
 
 21.00 
 12.00 
 12.00 
 12.00 
 12.00 
 
 9.00 
 6.00 
 2.80 
 2.90 
 3.40 
 
 3.10 
 3.20 
 2.50 
 4.20 
 4.30 
 
 4.40 
 4.20 
 4.80 
 4.50 
 5.00 
 
 May. 
 
 5.00 
 6.50 
 5.00 
 8.00 
 10.00 
 
 8.00 
 7.00 
 6.00 
 5.00 
 5.00 
 
 4.00 
 3.40 
 4.00 
 4.60 
 5.30 
 
 6.00 
 5.80 
 5.50 
 5.10 
 4.70 
 
 3.80 
 2.90 
 3.70 
 4.50 
 3.60 
 
 2.80 
 2.30 
 1.80 
 1.60 
 1.40 
 1.20 
 
 June. 
 
 1.10 
 1.00 
 
 .75 
 1.30 
 2.00 
 2.10 
 2.20 
 
 2.40 
 2.60 
 2.70 
 2.80 
 2.00 
 
 1.10 
 1.90 
 2.60 
 3.40 
 4.20 
 
 5.50 
 6.80 
 8.10 
 9.40 
 10.70 
 
 12.00 
 15.00 
 12.00 
 10.00 
 8.00 
 
 July. 
 
 6.20 
 8.20 
 25.00 
 18.00 
 9.20 
 
 7.80 
 7.60 
 7.40 
 7.20 
 7.00 
 
 27.00 
 15.00 
 7.60 
 15.00 
 12.00 
 
 9.00 
 6.00 
 5.00 
 3.90 
 3.60 
 
 4.40 
 5.20 
 6.00 
 6.70 
 7.40 
 
 6.00 
 6.30 
 5.80 
 5.U0 
 3.90 
 2.90 
 
 Aug. 
 
 2.00 
 2.40 
 15.00 
 12.00 
 "7.60 
 
 6.70 
 5.80 
 6.00 
 5.80 
 6.00 
 
 5.90 
 5.80 
 7.10 
 8.40 
 9.60 
 
 5.00 
 6.00 
 7.60 
 9.20 
 6.00 
 
 5.50 
 4.30 
 3.10 
 3.80 
 3.50 
 
 2.90 
 8.40 
 8.00 
 7.50 
 7.00 
 7.00 
 
 Sept. 
 
 18.00 
 20.00 
 30.00 
 35.00 
 21.00 
 
 9.60 
 30.00 
 15.00 
 9.60 
 7.60 
 
 5.60 
 14.00 
 9.00 
 7.60 
 5.30 
 
 9.00 
 7.40 
 5.80 
 5.50 
 4.40 
 
 3.40 
 3.60 
 2.70 
 2.40 
 2.10 
 
 1.80 
 1.40 
 1.40 
 1.20 
 2.00 
 
 Oct. 
 
 5.20 
 5.70 
 6.20 
 5.30 
 
 3.90 
 3.10 
 3.50 
 4.00 
 4.50 
 
 4.20 
 9.60 
 4.70 
 8.40 
 8.00 
 
 11.00 
 15.00 
 11.00 
 19.00 
 37.00 
 
 32.00 
 26.00 
 38.00 
 29.00 
 14.00 
 
 7.20 
 56.00 
 40.00 
 30.00 
 28.00 
 25.00 
 
 Nov. 
 
 25.00 
 25.00 
 30.00 
 25.00 
 20.00 
 
 15.00 
 10.00 
 10.00 
 19.00 
 40.00 
 
 30.00 
 22.00 
 24.00 
 14.00 
 10.00 
 
 31.00 
 53.00 
 19.00 
 30.00 
 14.00 
 
 16.00 
 16.00 
 22.00 
 16.00 
 10.00 
 
 9.20 
 7.60 
 10.00 
 15.00 
 8.40 
 
 Dec. 
 
 12.00 
 20.00 
 11.00 
 10.00 
 
 8.60 
 12.00 
 18.00 
 13.00 
 
 7.20 
 5.80 
 4.40 
 4.80 
 6.70 
 
 12.00 
 9.20 
 7.60 
 12.00 
 36.00 
 
 11.00 
 38.00 
 45.00 
 28.00 
 6.70 
 
 8.00 
 10.00 
 13.00 
 15.00 
 10.00 
 10.00 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. 
 Discharge for days for which gage heights are missing estimated from diagram prepared from record of 
 daily rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 74 at 2,700-foot level, near Hilo, Hawaii, for 1911-1912. 
 
 Month. 
 
 1911 
 November 13-30 . 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 17.50 
 10.80 
 
 1.52 
 6.90 
 13.70 
 10.30 
 4.63 
 
 Run-off 
 (total in 
 acre-feet). 
 
 628.00 
 663.00 
 
 93.50 
 397.00 
 842.00 
 613. 00 
 285.00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September '.'.. 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 4.54 
 8.62 
 6.48 
 9.71 
 16.10 
 19.90 
 13.70 
 
 Run-off 
 (total in 
 acre-feet). 
 
 270.00 
 530.00 
 398.00 
 578.00 
 990.00 
 1,180.00 
 842.00 
 
 7,040.00 
 
 Discharge measurements of station No. 75 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 21 
 
 Feet. 
 0.92 
 
 .80 
 
 Sec.-ft. 
 0.19 
 
 Nov. 8 
 
 Feet. 
 0.99 
 1.01 
 
 Sec.-ft. 
 0.38 
 
 Sept. 28... 
 
 Dec. 28 
 
 .53 
 
 
 
 
 
 Note.— Bed of stream of gravel and small cobbles; probably shifting. 
 
ISLAND OF HAWAII. 343 
 
 Daily gage height, in feet, at station No. 75 at 2, 700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 . 
 
 
 
 
 
 
 0.81 
 
 0.95 
 1.07 
 
 
 
 
 
 
 2 
 
 
 
 1.10 
 
 1.05 
 
 1.00 
 
 .91 
 
 .90 
 
 
 
 0.86 
 
 
 0.92 
 
 
 
 3 
 
 
 
 0.89 
 
 .89 
 
 1.06 
 
 1 09 
 
 
 
 
 
 4 
 
 
 0.69 
 .69 
 
 "'".*7o" 
 
 .69 
 .69 
 
 .69 
 .68 
 .91 
 
 .84 
 
 .72 
 
 
 
 
 1.02 
 1.01 
 
 *"i."66' 
 
 .94 
 1.00 
 1.01 
 
 "".'98' 
 
 "i.'oo' 
 
 1.03 
 
 "i.'03' 
 
 1.03 
 
 1.14 
 
 1.00 
 
 .96 
 
 .92 
 1.01 
 .99 
 .98 
 .95 
 
 1.00 
 
 .97 
 .94 
 .92 
 
 .94 
 
 .91 
 
 .90 
 
 .85 
 .86 
 
 "".'90* 
 
 .87 
 
 .98 
 
 .95 
 
 1.00 
 
 .99 
 
 
 
 5 
 
 0.90 
 
 .90 
 .90 
 
 .92 
 
 1.29 
 
 .79 
 
 1.09 
 
 1.05 
 1.00 
 
 *".*95" 
 
 1.04 
 
 '".'95' 
 
 .99 
 
 1.22 
 
 "i.'io" 
 
 1.12 
 
 1.01 
 
 .97 
 
 1.20 
 
 1.00 
 
 6 
 
 1.00 
 
 7 
 
 1.00 
 
 8 
 
 
 
 .81 
 
 1.08 
 
 9 
 
 .94 
 
 .92 
 
 .99 
 1.06 
 1.06 
 1.08 
 
 
 
 1.00 
 
 10 1 
 
 1.15 
 
 1.10 
 
 1.09 
 
 1.05 
 
 .98 
 
 1.00 
 
 
 1.00 
 
 11 
 
 .90 
 .90 
 
 .88 
 .88 
 .85 
 
 .84 
 
 
 1.1.2 
 
 .96 
 
 12 
 
 .91 
 
 
 .95 
 
 13 
 
 
 1.01 
 1.07 
 
 .94 
 
 14 
 
 
 .88 
 
 .95 
 
 
 1.00 
 
 
 .86 
 
 .76 
 
 
 1.08 
 
 17 
 
 .96 
 1.14 
 1.02 
 1.08 
 
 1.01 
 
 .98 
 
 1.02 
 
 
 .92 
 
 1.04 
 
 .98 
 
 
 
 .92 
 
 .99 
 
 1.01 
 
 1.05 
 1.05 
 1.07 
 1.10 
 
 .85 
 
 
 1.02 
 1.10 
 
 1.12 
 1.10 
 1.08 
 
 1.04 
 1.03 
 1.09 
 
 1.00 
 
 19 
 
 .80 
 .80 
 
 .80 
 .74 
 .78 
 .78 
 .75 
 
 .75 
 .75 
 .72 
 .70 
 .69 
 
 
 
 .84 
 
 .82 
 
 1.00 
 
 1.14 
 
 
 
 .80 
 
 
 21 
 
 .90 
 
 .88 
 .91 
 .90 
 
 .89 
 
 .84 
 .82 
 .81 
 .82 
 
 ""•LOS" 
 
 *"i.'i2' 
 
 1.04 
 1.00 
 
 "i.'i9 
 
 1.28 
 
 22. . . 
 
 .90 
 
 
 
 
 23 
 
 
 
 .89 
 .91 
 .90 
 
 .82 
 .98 
 
 
 24 
 
 .92 
 
 
 
 
 25 
 
 i.66 
 
 .83 
 
 .91 
 
 1.03 
 .96 
 .89 
 .87 
 .96 
 
 
 .96 
 
 1.01 
 .98 
 .92 
 .89 
 .88 
 .86 
 
 1.01 
 
 .99 
 
 .98 
 
 1.06 
 
 1.06 
 
 .98 
 
 1,00 
 
 26 
 
 1.20 
 1.24 
 1.16 
 
 .90 
 
 "'".'87' 
 
 .90 
 
 1.00 
 
 .90 
 
 27 
 
 
 28 
 
 1.01 
 
 29 
 
 1.00 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 75 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .14 
 .18 
 .30 
 .50 
 .30 
 
 11.... 
 
 
 0.14 
 .85 
 2.13 
 3.89 
 5.32 
 
 1.80 
 2.35 
 2.02 
 2.35 
 2.90 
 
 21 
 
 1.00 
 
 1.00 
 
 .95 
 
 .95 
 
 .95 
 
 .42 
 .26 
 .26 
 .10 
 .10 
 
 0.10 
 
 2 
 
 
 12 
 
 
 22 
 
 .10 
 
 3 
 
 
 13 
 
 
 23 
 
 .10 
 
 4 
 
 
 14 
 
 0.60 
 .55 
 
 .50 
 
 .60 
 
 .75 
 
 2.68 
 
 1.00 
 
 24 
 
 .10 
 
 5 
 
 
 15 
 
 25 
 
 .10 
 
 6 
 
 
 16 
 
 26 
 
 .10 
 
 7 
 
 
 17 
 
 27 
 
 .10 
 
 8 
 
 
 18 
 
 28 
 
 .10 
 
 9 
 
 
 19 
 
 29 
 
 .10 
 
 10 
 
 
 20 
 
 30 
 
 .10 
 
 
 
 
 31 
 
 .10 
 
 
 
 
 
344 
 
 WATER RESOURCES OF HAWAII, iM2. 
 
 Daily discharge, in second-feet, at station No. 75 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 (a) 
 (a) 
 \a\ 
 
 W 
 
 (a) 
 
 (a) 
 (a) 
 (o) 
 
 (a) 
 
 (a) 
 
 (a) 
 
 0.10 
 
 (a) 
 
 (a) 
 
 (a) 
 
 i 
 
 .20 
 
 1.50 
 2.50 
 3.00 
 2.00 
 .50 
 
 .10 
 .10 
 .10 
 .10 
 
 0.50 
 
 1.00 
 
 .50 
 
 .50 
 
 .10 
 
 .10 
 .40 
 .40 
 .30 
 .20 
 
 .50 
 .80 
 .80 
 .90 
 .70 
 
 .50 
 .30 
 1.30 
 .60 
 .90 
 
 .60 
 .40 
 .60 
 .40 
 .10 
 
 .60 
 .30 
 .10 
 .10 
 .30 
 2.00 
 
 0.70 
 
 .40 
 .10 
 .10 
 .80 
 
 1.00 
 
 2.00 
 1.80 
 1.70 
 1.40 
 
 1.00 
 
 1.00 
 
 .80 
 
 .40 
 
 .30 
 
 .30 
 .20 
 .20 
 
 .50 
 .60 
 
 .80 
 
 .80 
 
 .90 
 
 1.00 
 
 1.40 
 
 1.80 
 2.20 
 1.50 
 1.00 
 1.20 
 
 1.20 
 1.40 
 1.60 
 2.00 
 2.80 
 
 2.00 
 
 1.50 
 
 .90 
 
 .70 
 
 .50 
 
 .30 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .20 
 .20 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 o.io' 
 
 .10 
 .50 
 .10 
 
 0.30 
 .90 
 2.00 
 1.30 
 1.00 
 
 .80 
 .50 
 .40 
 .30 
 .40 
 
 1.20 
 .90 
 .60 
 .90 
 .60 
 
 .40 
 .20 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .20 
 .30 
 
 .60 
 .40 
 .20 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 
 .80 
 .60 
 .60 
 
 .50 
 .50 
 .30 
 .50 
 .60 
 
 .50 
 .40 
 .50 
 .50 
 .60 
 
 .60 
 .70 
 .60 
 .50 
 .30 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .40 
 .30 
 .20 
 .10 
 .20 
 
 0.60 
 
 .80 
 
 1.00 
 
 1.40 
 
 .60 
 
 .60 
 
 1.30 
 
 .50 
 
 .30 
 
 .20 
 .60 
 .50 
 .40 
 .30 
 
 .50 
 .40 
 .30 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .20 
 
 0.20 
 .20 
 .20 
 .30 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .40 
 .30 
 .50 
 . 50 
 
 . 50 
 .80 
 .60 
 
 1.00 
 .90 
 
 .90 
 
 .90 
 
 2.00 
 
 1.20 
 
 .70 
 
 .50 
 3.00 
 2.00 
 2.00 
 1.70 
 1.50 
 
 1.50 
 
 -1.00 
 
 2.00 
 
 1.00 
 
 .70 
 
 .50 
 
 .30 
 
 .50 
 
 2.00 
 
 3.00 
 
 2.00 
 
 1.00 
 
 1.20 
 
 .60 
 
 .40 
 
 1.80 
 2.00 
 1.20 
 1.00 
 .90 
 
 .70 
 .60 
 1.00 
 .80 
 .60 
 
 .50 
 .40 
 .80 
 .80 
 .40 
 
 1.00 
 
 2 
 
 
 2.00 
 
 3 
 
 
 1.00 
 
 4 
 
 
 .70 
 
 5 
 
 0.10 
 
 .10 
 .10 
 .20 
 
 .50 
 
 6 
 
 .50 
 
 7 
 
 .50 
 
 8 
 
 .90 
 
 9 
 
 .50 
 
 10 
 
 
 .50 
 
 11 
 
 .10 
 .10 
 .10 
 .10 
 
 .30 
 
 12 
 
 .30 
 
 13 
 
 .30 
 
 14.... 
 
 .30 
 
 15 
 
 .50 
 
 16 
 
 
 .90 
 
 17 
 
 
 .40 
 
 18 
 
 
 .50 
 
 19 
 
 
 1.30 
 
 20 
 
 
 1.50 
 
 21 
 
 
 2.70 
 
 22 
 
 
 3.00 
 
 23 
 
 
 3.00 
 
 24 
 
 
 2.50 
 
 25 
 
 
 50 
 
 26 
 
 
 1.00 
 
 27 
 
 
 .80 
 
 28 
 
 
 .60 
 
 29 
 
 
 .50 
 
 30 
 
 
 .30 
 
 31 
 
 
 
 .20 
 
 
 
 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 75 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 November 14-30. 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March.. 
 
 April 
 
 May 
 
 discharge 
 in second- 
 feet. 
 
 0.74 
 
 .87 
 
 .35 
 .54 
 .93 
 .56 
 
 Run-off 
 (total in 
 acre-feet). 
 
 25.10 
 53.00 
 
 4.92 
 20.10 
 33.20 
 55.30 
 34.40 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.20 
 .49 
 .37 
 
 .76 
 1.04 
 
 56 
 
 Run-off 
 (total in 
 acre-feet). 
 
 11.90 
 30.10 
 22.80 
 23.20 
 46.70 
 61.90 
 58.40 
 
 403.00 
 
 Discharge measurements at station No. 76 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 21 
 
 Feet. 
 0.85 
 .75 
 
 Sec.-ft. 
 0.42 
 .26 
 
 Nov. 8 
 
 Feet. 
 0.98 
 1.01 
 
 Sec.-ft. 
 0.98 
 
 Sept. 28 
 
 Dec. 28 
 
 1.25 
 
 
 
 
 Note.— Bed of stream of small bowlders and cobbles. Section fairly smooth. Channel permanent. 
 One channel at all stages. 
 
ISLAND OF HAWAII. 
 
 345 
 
 Daily gage height, in feet, at station No. 76 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.75 
 
 0.88 
 .99 
 
 
 
 
 
 
 2 
 
 
 
 1.05 
 
 1.02 
 
 .94 
 
 .82 
 
 .81 
 
 .88 
 
 
 
 6.86 
 
 
 0.90 
 
 
 
 3 
 
 
 
 0.90 
 1.20 
 1.06 
 
 1.38 
 
 
 
 
 
 4 
 
 
 0.55 
 .55 
 
 "".*55" 
 .54 
 .54 
 
 .52 
 .52 
 
 .82 
 
 .78 
 
 .64 
 
 
 
 
 .98 
 .92 
 
 "".ki' 
 .88 
 .93 
 .95 
 
 "".'92' 
 
 "i.05' 
 1.05 
 
 "L09' 
 
 1.11 
 
 1.18 
 
 .99 
 
 .95 
 
 .91 
 
 1.01 
 
 .99 
 
 .98 
 .95 
 
 .95 
 .89 
 .88 
 
 .84 
 
 .91 
 
 .89 
 
 .85 
 .83 
 .84 
 
 "".'85" 
 
 .82 
 .95 
 .92 
 
 .98 
 
 .92 
 
 
 
 5 
 
 0.80 
 
 .80 
 .80 
 
 .84 
 
 1.28 
 
 .68 
 
 1.01 
 
 .98 
 .93 
 
 '"".'88' 
 
 1.08 
 
 '"."94' 
 .98 
 1.40 
 
 "i.19" 
 
 1.28 
 
 1.03 
 
 .96 
 
 1.36 
 
 0.92 
 
 6 
 
 .95 
 
 7 
 
 .99 
 
 8 
 
 
 
 .70 
 
 1.01 
 
 9 
 
 .85 
 .85 
 
 .85 
 1.11 
 1.16 
 1.22 
 
 
 
 1.00 
 
 10 
 
 
 1.49 
 
 1.43 
 
 1.39 
 
 1.20 
 
 .91 
 
 .98 
 
 
 .98 
 
 11 
 
 .78 
 .78 
 .75 
 .75 
 
 
 1.10 
 
 .94 
 
 12 
 
 .93 
 
 
 .95 
 
 13 
 
 
 .92 
 1.04 
 
 .89 
 
 14 
 
 
 .79 
 
 .95 
 
 
 .99 
 
 
 .82 
 
 .70 
 
 
 1.11 
 
 17 
 
 1.05 
 
 1.24 
 
 .86 
 
 .98 
 
 .81 
 .86 
 .86 
 
 
 .99 
 
 .88 
 
 1.04 
 
 
 
 .90 
 .91 
 .99 
 
 .98 
 1.01 
 1.03 
 1.15 
 
 .81 
 
 
 .96 
 1.08 
 
 1.23 
 1.20 
 1.16 
 
 1.09 
 1.07 
 1.10 
 
 
 19 
 
 .66 
 
 .66 
 .65 
 .65 
 .65 
 .64 
 
 .64 
 .66 
 .62 
 .60 
 
 
 
 .81 
 .80 
 
 .99 
 
 1.22 
 
 
 
 .80 
 
 
 
 .85 
 
 .82 
 .84 
 .82 
 .81 
 
 .80 
 .78 
 .75 
 .80 
 
 "i."i6" 
 "i.'is" 
 
 1.06 
 1.02 
 
 "i.li" 
 
 1.32 
 
 22 
 
 .80 
 
 
 
 
 23 
 
 
 
 .81 
 .85 
 .82 
 
 .78 
 .94 
 
 
 24 
 
 .81 
 
 
 
 
 
 .95 
 .81 
 
 .82 
 
 1.01 
 .94 
 
 .84 
 .82 
 .88 
 
 
 .89 
 
 .91 
 .90 
 .88 
 .89 
 .89 
 .81 
 
 .99 
 
 .98 
 
 .96 
 
 1.12 
 
 1.12 
 
 1.00 
 
 .95 
 
 26 
 
 1.21 
 1.21 
 1.15 
 
 .79 
 
 '""."78" 
 
 .90 
 
 1.00 
 
 .90 
 
 
 27 
 
 
 
 
 29 
 
 1.01 
 
 
 
 
 
 1.01 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 76 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.29 
 .28 
 .28 
 .28 
 .33 
 
 .33 
 .36 
 
 .48 
 .57 
 
 .48 
 
 11 
 
 
 0.30 
 .90 
 2.30 
 4.18 
 9.56 
 
 3.05 
 3.80 
 3.05 
 4.56 
 6.12 
 
 21 
 
 3.50 
 3.20 
 2.90 
 2.60 
 2.30 
 
 1.14 
 .57 
 .57 
 .36 
 .30 
 
 1.20 
 
 2 
 
 
 12 
 
 
 22 
 
 .60 
 
 3 
 
 
 13 
 
 
 23 
 
 .54 
 
 4 
 
 
 14 
 
 1.31 
 
 1.42 
 
 1.20 
 1.42 
 1.75 
 12.20 
 3.65 
 
 24 
 
 1.20 
 
 5 
 
 
 15 
 
 25... 
 
 90 
 
 6 
 
 
 16 
 
 26 
 
 .60 
 
 7 
 
 
 17 
 
 27 
 
 .60 
 
 8 
 
 
 18 
 
 28 . 
 
 60 
 
 9 
 
 
 19... 
 
 29 
 
 90 
 
 10 
 
 
 20 
 
 30 . 
 
 72 
 
 
 
 
 31 
 
 .60 
 
 
 
 
 
346 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No< 76 at 2,700-foot level, near Hilo, Hawaii 
 
 for 1912. 
 
 Day. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 
 12 
 13 
 14 
 15 
 
 16 
 17. 
 18. 
 19. 
 20, 
 
 21. 
 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 Jan. 
 
 0.30 
 .30 
 .30 
 .30 
 .30 
 
 .30 
 .30 
 .40 
 .40 
 .30 
 
 .30 
 .30 
 .25 
 .25 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .15 
 .15 
 .15 
 .15 
 
 .15 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 Feb. 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 . .10 
 .05 
 .05 
 
 .05 
 .05 
 .35 
 .30 
 .20 
 
 .20 
 .15 
 .15 
 .50 
 2.00 
 
 5.00 
 8.00 
 10.00 
 6.00 
 .90 
 
 .35 
 .30 
 .30 
 .30 
 
 Mar. 
 
 1.00 
 
 1.75 
 
 1.40 
 
 .85 
 
 .35 
 
 .35 
 .55 
 .50 
 .45 
 .45 
 
 .45 
 2.40 
 3.20 
 4.20 
 3.40 
 
 2.60 
 1.75 
 4.40 
 .55 
 1.10 
 
 .35 
 .55 
 .55 
 .45 
 .35 
 
 1.30 
 
 .85 
 .40 
 .35 
 .55 
 8.00 
 
 Apr. 
 
 4.00 
 1.00 
 .60 
 3.80 
 1.80 
 
 5.85 
 9.00 
 9.00 
 8.00 
 8.00 
 
 7.90 
 
 5.90 
 
 3.80 
 
 .65 
 
 .65 
 
 1.00 
 
 2.00 
 
 .60 
 
 .65 
 
 1.15 
 
 1.10 
 1.30 
 1.55 
 1.75 
 2.00 
 
 4.00 
 4.00 
 3.05 
 1.00 
 1.00 
 
 May. 
 
 2.50 
 2.50 
 3.00 
 4.00 
 4.80 
 
 4.00 
 3.00 
 2.00 
 1.50 
 1.10 
 
 1.00 
 .80 
 .70 
 .60 
 .50 
 
 .35 
 .35 
 .35 
 .35 
 .30 
 
 .30 
 .30 
 .30 
 .35 
 .30 
 
 .30 
 .30 
 .35 
 .30 
 .30 
 .30 
 
 June. 
 
 0.25 
 .25 
 .25 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .30 
 .30 
 .30 
 
 .20 
 .20 
 .20 
 .30 
 .30 
 
 .30 
 .40 
 .40 
 .50 
 .50 
 
 1.20 
 .60 
 
 .50 
 
 July. 
 
 0.55 
 1.15 
 4.00 
 2.50 
 1.30 
 
 1.10 
 .80 
 .70 
 .55 
 .50 
 
 2.30 
 1.50 
 .75 
 1.65 
 1.50 
 
 1.30 
 
 1.15 
 
 .80 
 
 .35 
 
 .30 
 
 .40 
 .50 
 .50 
 .90 
 .60 
 
 .65 
 .60 
 .55 
 
 .35 
 
 Aug. 
 
 0.30 
 
 .50 
 
 3.00 
 
 1.10 
 
 .75 
 
 .70 
 .65 
 .55 
 .80 
 .90 
 
 .75 
 1.10 
 1.75 
 1.75 
 
 .60 
 .55 
 .80 
 1.15 
 .50 
 
 .45 
 .40 
 .35 
 .45 
 .35 
 
 .30 
 .85 
 .80 
 .70 
 .60 
 .70 
 
 Sept. 
 
 3.00 
 4.00 
 7.00 
 9.00 
 2.20 
 
 2.45 
 
 3.20 
 
 1.15 
 
 .90 
 
 .65 
 1.30 
 1.15 
 1.10 
 
 .90 
 
 .90 
 .60 
 .55 
 .40 
 .40 
 
 .35 
 .40 
 .35 
 .35 
 
 .30 
 
 .30 
 .30 
 .25 
 .30 
 .90 
 
 Oct. 
 
 0.70 
 .60 
 .70 
 .65 
 
 .45 
 .40 
 .40 
 .40 
 .45 
 
 .35 
 
 .90 
 
 .75 
 
 1.10 
 
 1.00 
 
 .75 
 2.50 
 
 .95 
 2.05 
 2.10 
 
 2.20 
 3.20 
 9.00 
 3.50 
 1.85 
 
 1.40 
 10.00 
 8.00 
 9.00 
 8.00 
 4.00 
 
 Nov. 
 
 5.00 
 3.00 
 8.00 
 4.00 
 2.10 
 
 1.00 
 
 .85 
 
 1.10 
 
 1.80 
 
 10.00 
 
 9.00 
 3.65 
 5.30 
 1.55 
 .95 
 
 6.95 
 8.50 
 4.35 
 3.80 
 3.20 
 
 2.20 
 1.95 
 2.30 
 1.60 
 1.15 
 
 1.10 
 .95 
 2.60 
 2.60 
 1.20 
 
 Dec. 
 
 4.00 
 7.00 
 1.00 
 3.00 
 .75 
 
 .90 
 1.15 
 1.30 
 1.20 
 1.10 
 
 .90 
 
 1.15 
 
 2.45 
 1.65 
 2.20 
 4.20 
 5.20 
 
 6.10 
 9.00 
 10.00 
 2.00 
 
 3.00 
 2.00 
 1.50 
 1.30 
 1.30 
 1.30 
 
 Note. — Daily discharge determined from rating curve fairly well denned except for flood.stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 76 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 November 14-30. 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 2.37 
 1.61 
 
 .23 
 1.24 
 1.46 
 3.20 
 1.20 
 
 Run-off 
 (total in 
 acre-feet). 
 
 79.90 
 88.90 
 
 14.10 
 71.30 
 
 190. 00 
 73.80 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 0.34 
 1.00 
 .80 
 1.52 
 2.51 
 3.59 
 2.58 
 
 1.64 
 
 Run-off 
 (total in 
 acre-feet). 
 
 20.20 
 61.50 
 49.20 
 90.40 
 154.00 
 214.00 
 159.00 
 
 1,190.00 
 
 Discharge measurements at station No. 77 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 21 
 
 Feet. 
 0.65 
 .60 
 
 Sec.-ft. 
 0.10 
 .06 
 
 Nov. 8....'. 
 
 Feet. 
 0.68 
 
 .68 
 
 Sec.-ft. 
 0.17 
 
 Sept. 28 
 
 Dec. 28 
 
 .17 
 
 
 
 
 Note.— Bed of stream of sand, gravel, and small cobbles; probably slightly shifting. One channel at 
 all stages. 
 
ISLAND OF HAWAII. 
 
 347 
 
 Daily gage height, in feet, at station No.77 at 2,700-foot level, near Hilo, Hawaii, for 1912 . 
 fBomin, Bilikov, Goorko Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 -Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.78 
 
 1.02 
 1.13 
 
 
 
 
 
 
 2 
 
 
 
 1.15 
 1.20 
 1.13 
 1.02 
 
 1.02 
 1.15 
 
 
 
 0.98 
 
 
 0.70 
 
 
 
 3 
 
 
 
 1.22 
 1.46 
 1.29 
 
 1.31 
 
 
 
 
 
 4 
 
 
 0.50 
 .50 
 
 '■"."49" 
 .48 
 
 .48 
 
 .46 
 .46 
 .68 
 .60 
 
 .51 
 .50 
 
 
 
 
 1.10 
 1.04 
 
 ""."94" 
 .90 
 
 .64 
 .65 
 
 """62* 
 
 ""."64* 
 .71 
 
 "*i*2T 
 
 1.22 
 1.26 
 1.11 
 
 .98 
 
 .74 
 .80 
 .79 
 .78 
 .74 
 
 .75 
 
 .72 
 .70 
 .69 
 
 .66 
 
 .65 
 
 .64 
 .62 
 .64 
 
 ""."64" 
 
 .62 
 .70 
 .66 
 .70 
 
 .69 
 
 
 
 5 
 
 0.71 
 
 .71 
 .71 
 
 .74 
 
 1.70 
 
 .71 
 
 1.18 
 
 1.15 
 1.10 
 
 "i.'oo" 
 
 0.75 
 
 ""76" 
 
 .70 
 
 .89 
 
 ""."80* 
 .80 
 .74 
 .70 
 
 .90 
 
 0.70 
 
 6 
 
 .70 
 
 7 
 
 .69 
 
 8 
 
 
 
 .71 
 
 .72 
 
 9 
 
 i.i.9 
 
 1.18 
 
 1.21 
 1.30 
 1.44 
 1.51 
 
 
 
 .68 
 
 10 
 
 
 1.39 
 
 1.34 
 1.35 
 1.25 
 1.23 
 
 1.30 
 
 
 .62 
 
 11 
 
 .70 
 .70 
 .68 
 .68 
 
 .65 
 
 
 1.20 
 
 .61 
 
 12 
 
 1.23 
 
 
 .60 
 
 13 
 
 
 1.11 
 1.19 
 
 .60 
 
 14 
 
 
 .81 
 
 .61 
 
 
 .62 
 
 
 1.01 
 
 .74 
 
 
 .68 
 
 17 
 
 1.14 
 1.42 
 1.24 
 1.28 
 
 1.22 
 1.20 
 1.24 
 
 
 .99 
 
 .62 
 
 .60 
 
 
 
 1.20 
 1.28 
 1.31 
 
 1.34 
 1.42 
 1.44 
 1.50 
 
 1.00 
 
 
 .86 
 .94 
 
 .84 
 .79 
 .80 
 
 .74 
 .72 
 .76 
 
 .64 
 
 19 
 
 .64 
 
 .64 
 
 .64 
 .64 
 .64 
 .64 
 .62 
 
 .62 
 .62 
 .60 
 .56 
 .55 
 
 
 
 .98 
 .96 
 
 .66 
 
 .72 
 
 20 
 
 
 .81 
 
 
 
 .66 
 
 .62 
 .64 
 .62 
 .62 
 
 .62 
 .62 
 .61 
 .62 
 
 """."79" 
 
 ""."78" 
 .72 
 
 .68 
 "".'84* 
 
 .84 
 
 22 
 
 .90 
 
 
 
 
 23 
 
 
 
 .61 
 
 .65 
 .62 
 
 .60 
 .65 
 
 
 24 
 
 .91 
 
 
 
 
 25 
 
 1.15 
 
 .99 
 
 1.16 
 
 1.21 
 1.16 
 1.12 
 1.08 
 1.16 
 
 
 1.01 
 
 1.03 
 1.02 
 1.01 
 1.05 
 .96 
 .98 
 
 .70 
 
 .70 
 .69 
 .73 
 
 .72 
 .70 
 
 .80 
 
 26 
 
 1.55 
 1.53 
 1.55 
 
 .89 
 '"'."80" 
 
 .98 
 
 1.02 
 
 .98 
 
 
 27 
 
 
 28 
 
 .70 
 
 29 
 
 .68 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 77 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.6 
 1.5 
 1.4 
 1.0 
 1.2 
 
 1.2 
 1.3 
 1.2 
 1.2 
 1.2 
 
 11 
 
 
 1.1 
 2.2 
 3.3 
 4.4 
 5.3 
 
 3.4 
 3.7 
 3.6 
 3.9 
 4.3 
 
 21 
 
 1.5 
 1.8 
 2.0 
 2.3 
 2.4 
 
 2.3 
 2.2 
 2.3 
 2.1 
 1.7 
 
 2.4 
 
 2 
 
 
 12 
 
 
 22 
 
 1.6 
 
 .3 
 
 
 13 
 
 
 23 
 
 1.6 
 
 4 
 
 
 14 
 
 0.5 
 
 .4 
 
 .4 
 
 .8 
 
 1.3 
 
 3.1 
 
 1.3 
 
 24 
 
 2.2 
 
 5 
 
 
 15 
 
 25 
 
 1.9 
 
 6 
 
 
 16 
 
 26 
 
 1.7 
 
 7 
 
 
 17 
 
 27 
 
 1.6 
 
 8 
 
 
 18 
 
 28 
 
 1.6 
 
 9 
 
 
 19 
 
 29 
 
 1.9 
 
 10 
 
 
 20 
 
 30 
 
 1.7 
 
 
 
 
 31 
 
 1.6 
 
 
 
 
 
348 
 
 WATER RESOURCES OP HAWAII, 1912 
 
 Daily discharge, in second-feet, at station No. 77 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June 
 
 July 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .30 
 .30 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .20 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .20 
 1.00 
 
 2.00 
 3.50 
 5.00 
 3.50 
 2.5 
 
 1.5 
 1.0 
 1.0 
 1.0 
 
 2.0 
 2.5 
 2.8 
 2.4 
 1.7 
 
 1.7 
 2.5 
 2.6 
 
 2.7 
 2.6 
 
 2.9 
 3.4 
 4.2 
 
 4.7 
 3.0 
 
 2.0 
 2.4 
 4.1 
 3.0 
 3.3 
 
 2.9 
 2.8 
 3.0 
 2.8 
 2.6 
 
 2.9 
 2.6 
 2.3 
 2.1 
 2.6 
 4.0 
 
 3.0 
 3.0 
 2.9 
 4.4 
 3.3 
 
 3.5 
 5.0 
 4.5 
 4.0 
 3.9 
 
 3.6 
 3.7 
 3.1 
 3.0 
 2.9 
 
 2.9 
 2.8 
 2.8 
 3.3 
 3.5 
 
 3.6 
 4.1 
 4.2 
 4.6 
 4.8 
 
 4.9 
 4.8 
 4.9 
 3.0 
 3.0 
 
 3.5 
 4.0 
 4.0 
 4.5 
 5.8 
 
 5.0 
 5.0 
 4.5 
 4.0 
 3.4 
 
 3.2 
 3.0 
 2.5 
 2.0 
 2.0 
 
 1.7 
 1.6 
 1.6 
 1.4 
 1.3 
 
 1.2 
 1.0 
 1.5 
 1.1 
 1.0 
 
 1.0 
 .8 
 .5 
 .4 
 .4 
 .3 
 
 0.4 
 .4 
 .3 
 .2 
 .2 
 
 .2 
 .2 
 .2 
 .2 
 .3 
 
 .4 
 .5 
 .6 
 .6 
 
 .4 
 
 .3 
 .3 
 .4 
 .5 
 .6 
 
 .7 
 .9 
 1.0 
 1.2 
 1.4 
 
 1.5 
 1.7 
 1.5 
 1.6 
 1.6 
 
 1.7 
 2.4 
 4.0 
 3.0 
 2.7 
 
 2.5 
 2.2 
 1.9 
 1.6 
 1.8 
 
 2.8 
 2.5 
 2.3 
 2.7 
 2.0 
 
 1.8 
 1.5 
 1.5 
 1.5 
 1.4 
 
 1.4 
 1.5 
 1.6 
 1.7 
 1.7 
 
 1.8 
 1.7 
 1.7 
 1.9 
 1.4 
 1.5 
 
 1.5 
 1.5 
 4.0 
 2.2 
 
 1.8 
 
 1.5 
 1.2 
 1.0 
 
 3.0 
 4.0 
 5.0 
 6.0 
 2.9 
 
 2.9 
 3.2 
 2.3 
 1.5 
 1.0 
 
 .3 
 .5 
 .5 
 .4 
 .3 
 
 .4 
 .3 
 .2 
 .2 
 .1 
 
 .1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .1 
 .1 
 .1 
 .5 
 
 0.4 
 .2 
 '.2 
 .1 
 .1 
 
 .1 
 .1 
 .1 
 .1 
 .1 
 
 .1 
 .2 
 .1 
 .2 
 .2 
 
 .2 
 1.7 
 
 .8 
 1.2 
 1.0 
 
 1.0 
 .5 
 
 3.0 
 .4 
 .3 
 
 .2 
 6.0 
 4.0 
 
 2.0 
 .7 
 .5 
 
 0.5 
 
 .5 
 
 3.0 
 
 1.0 
 
 .4 
 
 .2 
 
 .2 
 
 .2 
 
 1.0 
 
 5.0 
 
 3.0 
 .5 
 .5 
 .3 
 .2 
 
 1.0 
 3.0 
 
 .7 
 .5 
 .5 
 
 .3 
 .3 
 
 • 4 
 .3 
 
 .2 
 
 .2 
 .2 
 .3 
 .3 
 ,2 
 
 2.0 
 
 2. 
 
 3 5 
 
 3.... 
 
 .5 
 
 4 
 
 1.0 
 
 5 
 
 .2 
 
 6 
 
 .2 
 
 7 
 
 .2 
 
 8 
 
 .3 
 
 9 
 
 .2 
 
 10 
 
 .1 
 
 11 
 
 .1 
 
 12 
 
 .1 
 
 13 
 
 .1 
 
 14 
 
 .1 
 
 15 
 
 .1 
 
 16 
 
 .2 
 
 
 .1 
 
 18 
 
 .1 
 
 19 
 
 .3 
 
 20 
 
 2.0 
 
 21 
 
 .7 
 
 22 
 
 3.0 
 
 23 
 
 5.0 
 
 24 
 
 3.0 
 
 25 
 
 .5 
 
 26 
 
 1.0 
 
 27 
 
 .3 
 
 28 
 
 .2 
 
 29 
 
 .2 
 
 30 
 
 .2 
 
 31 
 
 .2 
 
 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 77 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 November 14-30. 
 December . . . 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 1.67 
 2.18 
 
 .15 
 
 .83 
 
 2.81 
 
 3.70 
 
 2.36 
 
 Run-off 
 (total in 
 acre-feet). 
 
 56.40 
 134.00 
 
 9.22 
 47.70 
 173.00 
 220.00 
 145.00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 Year 
 
 Mean. 
 
 discharge 
 
 in second 
 
 feet. 
 
 0.68 
 
 lr99 
 
 .55 
 1.21 
 .83 
 .83 
 .83 
 
 2.11 
 
 Run-off 
 (total in 
 acre-feet). 
 
 40.50 
 122.00 
 33.80 
 72.00 
 51.00 
 49.40 
 51.00 
 
 1,010.00 
 
ISLAND OF HAWAII. 
 
 349 
 
 Discharge measurements at station No. 78 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug 21 
 
 Feet. 
 
 0.88 
 
 .80 
 
 Sec. ft. 
 0.06 
 .05 
 
 Nov. 8 
 
 Feet. 
 
 0.90 
 
 .90 
 
 Sec.-ft. 
 0.14 
 
 Sept. 28 
 
 Dec. 28 
 
 .14 
 
 
 
 
 Note.— Bed of stream of sand, gravel, and small cobbles; probably slightly shifting. One channel at all 
 
 Daily gage height, in feet, at station No. 78 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May 
 
 June 
 
 July 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.70 
 
 0.88 
 .97 
 
 
 
 
 
 
 2 
 
 
 
 1.00 
 
 1.00 
 
 .92 
 
 .88 
 
 .85 
 .91 
 
 
 
 0.82 
 
 
 0.87 
 
 
 
 3 
 
 
 
 0.98 
 1.01 
 
 .98 
 
 .99 
 
 
 
 
 
 4 
 
 
 0.61 
 .61 
 
 "".*60" 
 .60 
 
 .60 
 
 .60 
 .59 
 .85 
 .80 
 .74 
 
 .71 
 
 .70 
 
 
 
 
 .99 
 .96 
 
 ""*.*9i* 
 .86 
 .92 
 .94 
 
 "*".*92* 
 .94 
 
 ""."89* 
 
 "6." 99* 
 
 1.01 
 
 1.11 
 
 .94 
 
 .90 
 
 .88 
 .94 
 '.90 
 .89 
 .84 
 
 .90 
 .89 
 
 .88 
 .86 
 
 .90 
 
 .88 
 
 .86 
 .82 
 .82 
 
 "".'85* 
 
 .82 
 .94 
 .91 
 .94 
 
 .92 
 
 
 
 5 
 
 0.85 
 
 .85 
 .85 
 .89 
 
 1.29 
 
 .68 
 
 1.00 
 
 .98 
 .92 
 
 "*."90" 
 
 0.95 
 
 "\*89" 
 .90 
 1.17 
 
 "i."66" 
 
 1.08 
 
 1.03 
 
 .90 
 
 1.11 
 
 0.91 
 
 7 "-- 
 
 .90 
 .91 
 
 8 
 
 
 
 .67 
 
 1.05 
 
 9 
 
 .94 
 .92 
 
 .96 
 1.01 
 1.12 
 1.19 
 
 
 
 .92 
 
 10 
 
 
 1.00 
 
 .98 
 
 1.02 
 
 1.02 
 
 .90 
 
 .91 
 
 .85 
 
 
 .91 
 
 11 
 
 .75 
 .75 
 
 .74 
 .74 
 .74 
 
 .74 
 
 
 1.21 
 
 .90 
 
 12 
 
 .80 
 
 
 .89 
 
 13 
 
 
 .95 
 .99 
 
 .85 
 
 14 
 
 
 .69 
 
 .89 
 
 15 
 
 .92 
 
 16 
 
 .76 
 
 .69 
 
 '""."98* 
 
 1.00 
 
 17 
 
 .99 
 1.22 
 
 .99 
 1.03 
 
 .91 
 .91 
 .94 
 
 
 .90 
 
 18 
 
 
 .90 
 .91 
 .90 
 
 .94 
 -.95 
 1.01 
 1.12 
 
 .88. 
 
 
 .96 
 1.01 
 
 1.05 
 1.01 
 1.02 
 
 .95 
 
 .96 
 
 1.02 
 
 .95 
 
 19 
 
 .74 
 .74 
 
 .74 
 .72 
 .71 
 .71 
 .70 
 
 .70 
 .68 
 .65 
 .64 
 
 
 
 .86 
 
 .85 
 
 .92 
 
 1.02 
 
 20 
 
 
 .80 
 
 
 21 
 
 .88 
 
 .84 
 .86 
 .84 
 
 .82 
 
 .81 
 .80 
 .80 
 .80 
 
 ""i.'65* 
 
 "i.*04" 
 
 .98 
 
 .88 
 
 ""i."io" 
 
 1.18 
 
 22 
 
 .81 
 
 
 
 
 23 
 
 
 
 .84 
 .84 
 .81 
 
 .80 
 .89 
 
 
 24 
 
 .82 
 
 
 
 
 25 
 
 .93 
 .80 
 
 .91 
 
 .96 
 .91 
 .86 
 
 .84 
 .90 
 
 
 .91 
 
 .92 
 .92 
 .90 
 .92 
 .88 
 .84 
 
 .91 
 
 .91 
 
 .91 
 
 1.00 
 
 1.00 
 
 .92 
 
 .95 
 
 26 
 
 1.21 
 1.19 
 1.18 
 
 .80 
 
 "".1% 
 
 .98 
 1.02 
 .98 
 
 
 27 
 
 
 28 
 
 .90 
 
 29 
 
 .90 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
350 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 78 at 2,700-foot level, near Kilo, Hawaii, 
 
 for 1911-12. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1.. 
 
 1911. 
 
 
 0.10 
 .10 
 .10 
 .10 
 .05 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 
 11. 
 
 12. 
 13. 
 14. 
 15. 
 
 16. 
 17. 
 18. 
 19. 
 20. 
 
 1911. 
 
 
 0.05 
 
 .38 
 1.48 
 2.80 
 4.70 
 
 .50 
 1.75 
 
 .50 
 1.75 
 2.70 
 
 21. 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 1911. 
 
 0.74 
 .82 
 .90 
 .98 
 
 1.14 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.42 
 
 2... 
 
 
 
 
 
 10 
 
 3.. 
 
 
 
 
 
 10 
 
 4. ... 
 
 
 
 0.50 
 .42 
 
 .30 
 .42 
 .66 
 2.40 
 .66 
 
 
 .26 
 
 5 
 
 
 
 
 10 
 
 6 
 
 
 
 
 .10 
 
 7 
 
 
 
 
 .10 
 
 8 
 
 
 
 
 .10 
 
 9 . 
 
 
 
 
 26 
 
 10. 
 
 
 
 
 18 
 
 
 
 
 
 
 .10 
 
 
 
 
 
 Day. 
 
 1912. 
 
 Jan. 
 
 0.10 
 
 .10 
 .10 
 .10 
 
 Feb. 
 
 0.10 
 .05 
 
 Mar. 
 
 0.30 
 .50 
 .50 
 .20 
 .10 
 
 .10 
 .10 
 .20 
 .30 
 .20 
 
 .30 
 
 .60 
 
 1.50 
 
 2.10 
 
 1.50 
 
 1.00 
 .50 
 
 2.40 
 .50 
 .75 
 
 .10 
 .10 
 .30 
 .20 
 .10 
 
 .30 
 .10 
 .10 
 .10 
 .10 
 2.50 
 
 Apr. 
 
 0.20 
 .30 
 .40 
 .60 
 .40 
 
 .50 
 2.00 
 1.50 
 1.00 
 
 • 50 
 
 .40 
 .70 
 .70 
 .10 
 .10 
 
 .10 
 .20 
 .10 
 .10 
 .10 
 
 .30 
 
 .30 
 
 .60 
 
 1.50 
 
 2.00 
 
 2.30 
 2.10 
 2.00 
 .50 
 1.00 
 
 May. 
 
 1.50 
 1.50 
 2.00 
 2.50 
 3.10 
 
 2.50 
 
 1.00 
 
 .50 
 
 .20 
 
 .10 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 June. 
 
 0.05 
 
 .40 
 .70 
 .40 
 
 July. 
 
 0.10 
 .40 
 .70 
 .60 
 .50 
 
 .40 
 .20 
 .10 
 .10 
 .10 
 
 2.30 
 
 1.50 
 
 .30 
 
 .50 
 
 .40 
 
 Aug. 
 
 0.05 
 .05 
 .80 
 .50 
 .30 
 
 .20 
 .10 
 .10 
 
 Sept. 
 
 0.50 
 
 .60 
 
 1.00 
 
 2.00 
 
 .50 
 
 .60 
 1.40 
 .30 
 .10 
 .10 
 
 .10 
 .30 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .25 
 
 Oct. 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .05 
 .05 
 .10 
 .10 
 
 .05 
 .30 
 .10 
 .30 
 .20 
 
 .20 
 .50 
 .30 
 .60 
 .70 
 
 1.50 
 .80 
 .40 
 
 .10 
 3.00 
 2.00 
 1.70 
 1.30 
 1.00 
 
 Nov. 
 
 1.00 
 .50 
 
 2.00 
 .50 
 
 30 
 
 .10 
 
 .10 
 
 1.90 
 
 3.00 
 
 2.00 
 .50 
 
 1.10 
 .75 
 .10 
 
 1.40 
 
 2.00 
 
 .90 
 
 .60 
 
 .70 
 
 .30 
 .30 
 .70 
 .40 
 .10 
 
 .10 
 .10 
 .50 
 .50 
 .20 
 
 Dec. 
 
 1.50 
 
 2.50 
 
 1.80 
 
 .70 
 
 .10 
 
 .10 
 .10 
 .90 
 .20 
 .20 
 
 .10 
 .10 
 .10 
 .10 
 .20 
 
 .50 
 .10 
 .30 
 .70 
 1.00 
 
 2.00 
 2.50 
 3.00 
 2.50 
 
 .50 
 .30 
 .10 
 .10 
 .10 
 .10 
 
 Note. — Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 78 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 November 14-30 . 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 discharge 
 in second 
 
 0.61 
 .62 
 
 Run-off 
 (total in 
 acre-feet). 
 
 20.80 
 38.60 
 
 3.07 
 11.50 
 35.00 
 44.60 
 32.00 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 
 in second 
 
 feet. 
 
 0.10 
 .35 
 .17 
 .27 
 .57 
 .76 
 .74 
 
 42 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 5.95 
 21.50 
 10.40 
 16.10 
 35.00 
 45.20 
 45.50 
 
 306.00 
 
ISLAND OF HAWAII. 
 
 351 
 
 Discharge measurements at station No. 79 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 21 .'. 
 
 Feet. 
 0.78 
 .65 
 
 Sec.-ft. 
 0.28 
 .31 
 
 Nov. 8 
 
 Feet. 
 0.87 
 .98 
 
 Sec.-ft. 
 0.94 
 
 Sept. 29 
 
 Dec. 28 
 
 1.36 
 
 
 
 
 Note. — Bed of stream of sand, gravel, and small cobbles; probably slightly shifting. One channel at 
 
 Daily gage height, in feet, at station No. 79 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.60 
 
 0.82 
 
 .92 
 
 
 
 
 
 
 2 
 
 
 
 1.12 
 
 1.05 
 
 .95 
 
 .82 
 
 .81 
 
 .85 
 
 
 
 0.71 
 
 
 0.72 
 
 
 
 3 
 
 
 
 1.12 
 
 .95 
 
 1.15 
 
 1.15 
 
 
 
 
 
 4 
 
 
 0.50 
 .50 
 
 ""."si" 
 
 .51 
 .50 
 
 .50 
 .50 
 .80 
 .71 
 .64 
 
 .61 
 .60 
 
 
 
 
 1.00 
 .89 
 
 """."88" 
 .85 
 .90 
 .91 
 
 "".'89' 
 
 "".'96' 
 .98 
 
 'i.09' 
 
 1.10 
 
 1.11 
 
 1.04 
 
 .95 
 
 .84 
 .91 
 .89 
 .88 
 
 .85 
 
 .85 
 .81 
 .78 
 .75 
 
 .79 
 .76 
 
 .74 
 .70 
 .70 
 
 ""72" 
 
 .69 
 .81 
 
 .78 
 .82 
 
 .81 
 
 
 
 5 
 
 0.80 
 
 .80 
 .80 
 .81 
 
 1.35 
 
 .57 
 
 .98 
 
 .95 
 .90 
 
 '"."82" 
 
 1.08 
 
 "".'86" 
 
 .86 
 
 1.39 
 
 "i.'26" 
 
 1.30 
 
 1.00 
 
 .90 
 
 1.46 
 
 0.90 
 
 6 
 
 .90 
 
 7 
 
 .99 
 
 8 
 
 
 
 .59 
 
 .92 
 
 9 
 
 .84 
 .84 
 
 .81 
 1.20 
 1.21 
 1.25 
 
 
 
 .92 
 
 10 
 
 
 1.09 
 
 1.04 
 
 1.29 
 
 1.01 
 
 .90 
 
 .89 
 
 .90 
 
 
 .90 
 
 11 
 
 .80 
 .80 
 .78 
 .78 
 .70 
 
 .65 
 
 
 1.01 
 
 .84 
 
 12 
 
 .86 
 
 
 .83 
 
 13 
 
 
 .95 
 1.10 
 
 .79 
 
 14 
 
 
 .65 
 
 .82 
 
 15 . 
 
 .92 
 
 16 
 
 .69 
 
 .58 
 
 
 1.01 
 
 17 
 
 1.18 
 
 1.28 
 
 .86 
 
 1.25 
 
 .81 
 .80 
 .83 
 
 
 1.00 
 
 .81 
 
 .92 
 
 18 
 
 
 .90 
 .91 
 .91 
 
 .94 
 1.00 
 1.02 
 1.10 
 
 .68 
 
 
 1.01 
 1.12 
 
 1.29 
 1.28 
 1.19 
 
 1.18 
 1.06 
 1.10 
 
 .95 
 
 19 
 
 .60 
 .60 
 
 .60 
 .59 
 .58 
 .58 
 .56 
 
 .56 
 .56 
 .54 
 .51 
 .50 
 
 
 
 .92 
 .91 
 
 .92 
 
 1.06 
 
 20 
 
 
 .72 
 
 
 21 
 
 .79 
 
 .72 
 .75 
 .71 
 .70 
 
 .64 
 .64 
 .62 
 .65 
 
 "i.'25' 
 
 "i^3o" 
 
 1.10 
 
 .98 
 
 "i.'si" 
 
 1.20 
 
 22 
 
 .77 
 
 
 
 
 23 
 
 
 
 .74 
 .76 
 .75 
 
 .70 
 
 .88 
 
 
 24 
 
 .80 
 
 
 
 
 25 : 
 
 1.00 
 
 .83 
 
 .85 
 
 1.00 
 .96 
 
 .84 
 .81 
 .88 
 
 
 .84 
 
 .95 
 
 .85 
 .82 
 .84 
 .78 
 .75 
 
 .90 
 
 .86 
 
 .82 
 
 1.05 
 
 1.09 
 
 .95 
 
 1.00 
 
 26 
 
 1.25 
 1.25 
 
 1.22 
 
 .79 
 ----- 
 
 1.01 
 1.10 
 1.01 
 
 
 27 
 
 
 28 
 
 .96 
 
 29 
 
 .95 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 79 at 
 
 for 1911. 
 
 ,700-foot level, near Hilo, Hawaii, 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.30 
 .30 
 .30 
 .25 
 .30 
 
 .30 
 .35 
 .40 
 .40 
 .40 
 
 11 
 
 
 0.30 
 .55 
 .80 
 1.05 
 1.40 
 
 .80 
 1.00 
 
 .80 
 1.00 
 1.40 
 
 21 
 
 1.40 
 1.35 
 1.35 
 1.35 
 1.35 
 
 1.10 
 .45 
 .45 
 .40 
 .35 
 
 0.65 
 
 2 
 
 
 12 
 
 
 22 
 
 .45 
 
 3 
 
 
 13 
 
 
 23 
 
 .40 
 
 4 
 
 
 14 .. 
 
 0.63 
 .68 
 
 .70 
 .75 
 .80 
 .75 
 1.40 
 
 24 
 
 .60 
 
 5 
 
 
 15 .. 
 
 25 
 
 .55 
 
 6 
 
 
 16 
 
 26 
 
 .45 
 
 7 
 
 
 17 .. 
 
 27 
 
 .45 
 
 8 
 
 
 18 .. 
 
 28 
 
 .45 
 
 9 
 
 
 19 
 
 29 
 
 .55 
 
 10 
 
 
 20 
 
 30 
 
 .50 
 
 
 
 
 31 
 
 .45 
 
 
 
 
 
352 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 79 at 2,700-foot 
 
 for 1912. 
 
 , near Hilo, Hawaii, 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.70 
 .70 
 .70 
 .70 
 .70 
 
 .70 
 .70 
 .70 
 .70 
 .70 
 
 .70 
 .70 
 .60 
 .60 
 .40 
 
 .30 
 .30 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .10 
 .10 
 .10 
 .10 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .70 
 .40 
 .30 
 
 .20 
 .20 
 .20 
 .80 
 1.00 
 
 2.00 
 3.00 
 3.50 
 2.50 
 1.40 
 
 .80 
 1.00 
 1.00 
 2.00 
 
 2.00 
 1.90 
 1.60 
 1.20 
 .80 
 
 .80 
 .80 
 .80 
 .80 
 .80 
 
 .70 
 2.20 
 2.20 
 2.40 
 .100 
 
 1.80 
 2.10 
 2.50 
 .90 
 2.40 
 
 .80 
 .70 
 .80 
 .80 
 .80 
 
 1.40 
 
 1.20 
 
 .80 
 
 .80 
 
 .90 
 
 2.00 
 
 2.00 
 2.00 
 1.90 
 1.20 
 2.00 
 
 2.00 
 3.50 
 3.00 
 2.50 
 1.80 
 
 1.60 
 2.60 
 1.40 
 1.00 
 1.00 
 
 1.00 
 1.50 
 1.00 
 1.00 
 1.00 
 
 1.20 
 1.40 
 1.50 
 1.80 
 2.00 
 
 2.40 
 2.40 
 2.30 
 1.50 
 2.00 
 
 2.00 
 2.00 
 2.00 
 2.00 
 2.80 
 
 1.50 
 1.50 
 1.50 
 1.00 
 1.00 
 
 1.00 
 .90 
 .80 
 .70 
 .50 
 
 .40 
 .40 
 .40 
 .50 
 .40 
 
 .40 
 .60 
 1.50 
 .70 
 .70 
 
 - .70 
 .60 
 .50 
 .70 
 .50 
 .30 
 
 0.20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .20 
 .20 
 .20 
 .20 
 
 .20 
 .30 
 .30 
 .30 
 .30 
 
 .20 
 .20 
 .20 
 .35 
 .50 
 
 .70 
 
 .90 
 
 1.00 
 
 1.20 
 
 1.30 
 
 1.40 
 1.80 
 1.40 
 1.20 
 1.00 
 
 0.80 
 1.10 
 3.00 
 2.00 
 1.30 
 
 1.20 
 
 1.00 
 
 .80 
 
 .80 
 
 .80 
 
 1.40 
 1.30 
 1.20 
 1.80 
 1.60 
 
 1.50 
 1.40 
 1.30 
 1.10 
 1.00 
 
 1.10 
 1.10 
 1.20 
 1.50 
 .80 
 
 1.20 
 .80 
 .80 
 .80 
 .60 
 .50 
 
 0.40 
 .40 
 2.00 
 1.40 
 1.00 
 
 .90 
 
 .90 
 
 .80 
 
 1.00 
 
 1.00 
 
 1.00 
 1.00 
 1.00 
 1.00 
 1.30 
 
 1.00 
 
 .70 
 
 ' .90 
 
 1.10 
 .90 
 
 .70 
 .60 
 .50 
 .60 
 .50 
 
 .40 
 .90 
 .80 
 .70 
 .60 
 .70 
 
 1.20 
 1.50 
 2.00 
 2.50 
 1.80 
 
 1.80 
 1.80 
 1.60 
 1.20 
 1.00 
 
 .80 
 
 1.00 
 
 1.00 
 
 .90 
 
 .80 
 
 .80 
 .70 
 .60 
 .50 
 .50 
 
 .50 
 .50 
 .40 
 .40 
 .40 
 
 .30 
 .30 
 .20 
 .30 
 1.20 
 
 1.00 
 .50 
 .70 
 .70 
 .60 
 
 .50 
 .40 
 .40 
 .40 
 .50 
 
 .40 
 .70 
 .60 
 .80 
 .80 
 
 .70 
 2.00 
 1.40 
 1.90 
 2.00 
 
 2.20 
 2.40 
 3.00 
 2.60 
 1.80 
 
 1.30 
 3.50 
 3.50 
 3.50 
 3.40 
 3.00 
 
 3.00 
 2.00 
 3.00 
 2.00 
 1.70 
 
 .90 
 
 .90 
 
 .90 
 
 3.00 
 
 3.50 
 
 3.50 
 2.40 
 2.60 
 1.40 
 1.00 
 
 3.20 
 3.00 
 2.60 
 2.50 
 2.20 
 
 2.10 
 
 1.60 
 1.80 
 1.50 
 1.00 
 
 .90 
 
 .80 
 
 1.60 
 
 1.80 
 
 1.20 
 
 2.50 
 
 2 
 
 3.00 
 
 3 
 
 1.00 
 
 4 
 
 2.00 
 
 5 
 
 1.00 
 
 6 
 
 1.00 
 
 7 
 
 1.40 
 
 8 
 
 1.10 
 
 9 
 
 1.10 
 
 10 
 
 1.00 
 
 11 
 
 .80 
 
 12 : 
 
 .80 
 
 13 
 
 .70 
 
 14 
 
 .80 
 
 15 
 
 1.10 
 
 16 
 
 1.40 
 
 17 
 
 1.10 
 
 18 
 
 1.20 
 
 19 
 
 1.60 
 
 20 
 
 2.80 
 
 21 
 
 2.20 
 
 22 
 
 2.50 
 
 23 
 
 3.50 
 
 24 
 
 3.50 
 
 25 
 
 ' 1.40 
 
 26 
 
 2.00 
 
 27 
 
 1.50 
 
 28 
 
 1.20 
 
 29 
 
 1.20 
 
 30 
 
 1.00 
 
 31 
 
 .80 
 
 
 
 Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 79 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 November 14r-30. 
 December 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.90 
 
 .58 
 
 .04 
 
 .77 
 
 1.31 
 
 1.78 
 
 Run-off 
 (total in 
 acre-feet). 
 
 30.10 
 35.40 
 
 2.46 
 44.30 
 
 106.00 
 60.30 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.56 
 1.19 
 .86 
 .92 
 1.52 
 1.99 
 1.55 
 
 1.15 
 
 Run-off 
 (total in 
 acre-feet). 
 
 33.30 
 73.20 
 52.90 
 54.70 
 93.50 
 118.00 
 95.30 
 
 815.00 
 
 Discharge measurements at station No. 80 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 23 . . 
 
 Feet. 
 0.82 
 .70 
 
 Sec.-ft. 
 0.35 
 .02 
 
 Nov. 8...1 
 
 Feet. 
 1.16 
 1.29 
 
 Sec.-ft. 
 1.63 
 
 Sept. 29 . . . 
 
 Dec. 28 ... : 
 
 2.12 
 
 
 
 
 Note.— Bed of stream of gravel, small cobbles; some bed-rock exposed. Station probably only slightly 
 shifting. One channel. 
 
ISLAND OF HAWAII. 
 
 353 
 
 Daily gage height, in feet, at station No. 80 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Biltkov, Goorko, BelayefE, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 l 
 
 
 
 
 
 
 0.68 
 
 0.95 
 1.06 
 
 
 
 
 
 
 2 
 
 
 
 1.40 
 1.31 
 1.25 
 1.05 
 
 .82 
 .95 
 
 
 
 0.80 
 
 
 0.88 
 
 
 
 3 
 
 
 
 1.62 
 1.52 
 1.38 
 
 1.39 
 
 
 
 
 
 4 
 
 
 (a) 
 (a) 
 
 "(a)" 
 (a) 
 (a) 
 
 (a) 
 (a) 
 0.88 
 .79 
 
 
 
 
 1.19 
 1.10 
 
 "i.'oi' 
 
 .99 
 
 1.02 
 
 1.04 
 
 * Too" 
 
 "".'94' 
 
 1.01 
 
 "T43' 
 
 1.44 
 1.50 
 1.36 
 1.06 
 
 1.02 
 1.21 
 1.19 
 1.18 
 1.14 
 
 1.14 
 1.08 
 1.00 
 
 .98 
 
 .91 
 .86 
 
 .81 
 .80 
 .79 
 
 ""."82" 
 
 .80 
 
 .98 
 .94 
 .96 
 
 .92 
 
 
 
 5 
 
 0.90 
 
 .90 
 .90 
 .94 
 
 1.58 
 
 .60 
 
 1.10 
 
 1.05 
 1.01 
 
 "".91 
 
 1.40 
 
 *"i.'i9' 
 
 1.18 
 1.52 
 
 *"i."58* 
 1.61 
 1.36 
 1,23 
 
 1.72 
 
 1.25 
 
 6 
 
 1.18 
 
 7 .. 
 
 1.20 
 
 8 
 
 
 
 .61 
 
 1.28 
 
 Q 
 
 .98 
 .98 
 
 .99 
 1.45 
 1.52 
 1.55 
 
 
 
 1.26 
 
 10 .. 
 
 
 1.48 
 
 1.39 
 1.11 
 1.12 
 1.22 
 1.29 
 
 1.10 
 
 
 1.25 
 
 11 
 
 .85 
 .85 
 .84 
 .84 
 .70 
 
 .52 
 
 
 .14 
 
 1.16 
 
 12 .. 
 
 .99 
 
 
 1.11 
 
 13 
 
 
 1.02 
 1.27 
 
 1.10 
 
 14 
 
 
 .71 
 
 1.11 
 
 15 
 
 1.15 
 
 16 
 
 
 
 .88 
 
 .64 
 
 
 1.31 
 
 17 
 
 
 1.36 
 1.59 
 1.01 
 1.40 
 
 .96 
 .91 
 .98 
 
 
 1.18 
 
 .90 
 
 1.16 
 
 18 
 
 
 
 1.22 
 1.31 
 1.36 
 
 1.37 
 1.40 
 1.45 
 1.51 
 
 .78 
 
 
 1.18 
 1.30 
 
 1.59 
 1.57 
 1.48 
 
 1.40 
 1.40 
 1.52 
 
 1.05 
 
 19 
 
 .50 
 .45 
 
 .45 
 .44 
 .42 
 .42 
 .40 
 
 .40 
 .41 
 .36 
 .34 
 .34 
 
 
 
 .89 
 .80 
 
 1.04 
 
 1.20 
 
 20 .. 
 
 
 .82 
 
 
 21 
 
 
 .88 
 .89 
 .84 
 .83 
 
 .71 
 .70 
 .09 
 .70 
 
 "i'.bi 
 
 "1*58 
 
 1.32 
 
 1.16 
 
 "i.'n" 
 
 1.40 
 
 22 
 
 .80 
 
 
 
 
 
 23 
 
 
 
 .82 
 .85 
 .84 
 
 .71 
 
 .92 
 
 
 24 
 
 .81 
 
 
 
 
 25 
 
 1.37 
 .98 
 
 .98 
 
 1.22 
 
 1.17 
 
 .99 
 
 .97 
 
 1.08 
 
 
 .92 
 
 .97 
 .94 
 .91 
 .92 
 
 .88 
 .82 
 
 1.22 
 
 1.18 
 1.11 
 1.36 
 1.40 
 1.21 
 
 1.14 
 
 26 
 
 1.58 
 1.53 
 1.49 
 
 .78 
 "\*70" 
 
 1.01 
 1.12 
 1.01 
 
 
 27 
 
 
 28 
 
 1.29 
 
 29 
 
 1.28 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 80 at 2,700-foot level, near Silo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.16 
 .92 
 .76 
 .60 
 .64 
 
 .64 
 .68 
 .80 
 .96 
 .80 
 
 11 
 
 
 0.60 
 1.28 
 1.96 
 2.68 
 3.75 
 
 1.88 
 2.40 
 1.88 
 2.52 
 2.80 
 
 21 
 
 3.05 
 3.00 
 3.00 
 2.96 
 2.96 
 
 1.96 
 1.48 
 1.48 
 1.72 
 1.40 
 
 1.48 
 
 2 
 
 
 12 
 
 
 22 
 
 1.00 
 
 3 
 
 
 13 
 
 
 23 
 
 1.00 
 
 4 
 
 
 14 , 
 
 1.88 
 2.00 
 
 2.00 
 
 2.20 
 2.40 
 5.00 
 3.05 
 
 24 
 
 1.48 
 
 5 
 
 
 15 
 
 25 
 
 1.20 
 
 6 c 
 
 - 
 
 16 
 
 28 
 
 3.08 
 
 7 
 
 
 37 
 
 27 
 
 1.00 
 
 8 
 
 
 18 
 
 28 
 
 1.00 
 
 9 
 
 
 19 
 
 29 
 
 1.20 
 
 10 
 
 
 20. 
 
 30 . 
 
 1.08 
 
 
 
 
 31 
 
 1.00 
 
 
 
 
 
 14694°— wsp 336—14- 
 
 -23 
 
354 
 
 Daily discharge, in second-feet, at station No. 80 at 2,700-foot level, near Kilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 0.60 
 .60 
 .60 
 
 .60 
 .60 
 .75 
 .60 
 .50 
 
 .45 
 .45 
 .40 
 .40 
 
 .05 
 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 (a) 
 
 (a) 
 
 a) 
 
 (a) 
 
 fa) 
 
 {a) 
 
 0.55 
 .30 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 
 .20 
 
 2.00 
 3.50 
 4.50 
 3.00 
 2.25 
 
 .90 
 .80 
 .70 
 .60 
 
 2.60 
 2.00 
 2.25 
 2.00 
 1.20 
 
 .35 
 
 .80 
 .80 
 .90 
 
 .95 
 2.80 
 3.10 
 3.25 
 3.00 
 
 2.70 
 2.45 
 3.45 
 1.04 
 2.60 
 
 .85 
 .65 
 .90 
 .90 
 .90 
 
 1.90 
 1.70 
 .95 
 .90 
 1.30 
 2.50 
 
 3.00 
 3.00 
 3.60 
 3.10 
 2.50 
 
 2,55 
 4.00 
 3.80 
 3.50 
 2.90 
 
 2.55 
 1.45 
 1.50 
 1.90 
 1.15 
 
 1.40 
 
 1.65 
 1.90 
 2.25 
 2.45 
 
 2.50 
 2.60 
 2.80 
 3.05 
 3.20 
 
 3.40 
 3.15 
 
 2.95 
 2.80 
 2.90 
 
 3.00 
 3.00 
 2.50 
 3.00 
 3.40 
 
 3.00 
 2.60 
 2.20 
 1.80 
 1.40 
 
 1.20 
 
 .95 
 .85 
 .75 
 .65 
 
 .55 
 .40 
 .25 
 .25 
 .30 
 
 .30 
 .30 
 .30 
 .35 
 
 1.05 
 1.55 
 1.05 
 1. 00 
 
 0.80 
 1.25 
 3.00 
 2.30 
 1.40 
 
 1.20 
 
 1.05 
 .85 
 .65 
 
 3.00 
 1.50 
 1.10 
 2.10 
 2.00 
 
 1.80 
 1.70 
 1.20 
 .55 
 .30 
 
 .30 
 .40 
 .50 
 .60 
 .70 
 
 .90 
 .75 
 .65 
 .70 
 .55 
 .35 
 
 0.30 
 .30 
 2.00 
 1.75 
 1.40 
 
 1.20 
 1.05 
 .95 
 1.10 
 1.15 
 
 1.10 
 1.00 
 1.00 
 .95 
 1.05 
 
 .80 
 .60 
 .90 
 1.15 
 .60 
 
 .50 
 .40 
 .35 
 .45 
 .40 
 
 .10 
 .65 
 .50 
 .40 
 .30 
 .50 
 
 2.50 
 3.00 
 3.50 
 4.00 
 2.70 
 
 2.75 
 3.00 
 2.45 
 1.25 
 1.20 
 
 1.10 
 1.85 
 1.75 
 1.70 
 1.55 
 
 1.55 
 
 1.30 
 
 1.00 
 
 .95 
 
 .75 
 
 .55 
 .60 
 
 .10 
 
 .05 
 .05 
 .05 
 .20 
 
 .55 
 .60 
 .65 
 .50 
 
 .40 
 .30 
 .30 
 .30 
 .35 
 
 .30 
 .90 
 .75 
 
 .85 
 .80 
 
 .70 
 2.00 
 1.70 
 2.20 
 2.20 
 
 2.20 
 3.05 
 4.30 
 3.40 
 2.60 
 
 1.65 
 4.50 
 4.40 
 4.30 
 4.05 
 3.00 
 
 2.00 
 2.50 
 3.00 
 2.80 
 2.60 
 
 2.20 
 1.75 
 1.70 
 3.10 
 4.30 
 
 4.20 
 3.40 
 3.55 
 2.45 
 1.95 
 
 4.10 
 3.80 
 3.45 
 3.35 
 -2.90 
 
 2.60 
 2.60 
 3.10 
 2.50 
 1.90 
 
 1.70 
 1.45 
 2.45 
 2.60 
 1.85 
 
 2.00 
 3.00 
 2.60 
 2.30 
 2.00 
 
 1.70 
 
 1.80 
 2.10 
 2.05 
 2.00 
 
 1.65 
 1.45 
 1.40 
 1.45 
 1.60 
 
 2.25 
 1.65 
 1.20 
 1.80 
 3.00 
 
 2.60 
 3.00 
 4.00 
 3.00 
 1.55 
 
 2.00 
 2.10 
 2.15 
 2.10 
 1.00 
 1.00 
 
 a Channel dry. 
 
 Dis- 
 
 Note. — Daily discharge determined from rating curve fairly well denned except for flood stages. 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 80 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 November 14-30. 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 m second- 
 feet. 
 
 2.34 
 1.36 
 
 .67 
 1.68 
 2.65 
 1.10 
 
 Run-off 
 (total in 
 acre-feet). 
 
 82.30 
 83.50 
 
 17. 20 
 38.50 
 103. 00 
 158.00 
 67.60 
 
 Month. 
 
 1912— Continued 
 
 Tune 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.35 
 1.12 
 .80 
 1.42 
 1.75 
 2.73 
 2.05 
 
 1.38 
 
 Run-off 
 (total in 
 acre-feet). 
 
 20.80 
 68.90 
 49.20 
 84.50 
 108.00 
 162.00 
 126.00 
 
 1,000.00 
 
ISLAND OF HAWAII. 
 
 355 
 
 Discharge measurements at station No. 81 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 23 
 
 Feet. 
 0.70 
 
 .68 
 
 Sec.-ft. 
 1.83 
 .73 
 
 Nov. 8 
 
 Feet. 
 0.91 
 .97 
 
 Sec.-ft. 
 3.90 
 
 Sept. 29 
 
 Dec. 28 
 
 3.93 
 
 
 
 
 Bed of stream of sand and gravel with some small cobbles; station shifting. One channel at all stages. 
 
 Daily gage height, in feet, at station No. 81 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Biltkov, Goorko, BelayefE, Selitonott, and Kuznetsoff , observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.60 
 
 0.88 
 .97 
 
 
 
 
 
 
 2 
 
 
 
 1.20 
 
 1.10 
 
 1.09 
 
 .81 
 
 .75 
 .82 
 
 
 
 0.65 
 
 . . . . 
 
 0.81 
 
 
 
 3 
 
 
 
 1.16 
 1.19 
 1.19 
 
 1.22 
 
 
 
 
 
 4 
 
 
 0.32 
 .31 
 
 "'"."31" 
 .31 
 .32 
 
 .31 
 .31 
 .70 
 .60 
 .48 
 
 .44 
 .40 
 
 
 
 
 1.08 
 .96 
 
 '""."86* 
 .85 
 .90 
 .91 
 
 **"."89' 
 
 ""."92* 
 
 .98 
 
 *'i.*24' 
 
 1.25 
 1.28 
 1.14 
 1.00 
 
 .96 
 1.08 
 1.04 
 1.03 
 
 .99 
 
 .99 
 .92 
 
 .82 
 .80 
 
 .81 
 .78 
 
 !66 
 
 .66 
 
 ----- 
 
 .69 
 .86 
 
 .82 
 .90 
 
 .90 
 
 
 
 5 
 
 0.70 
 
 .70 
 .70 
 
 .72 
 
 1.10 
 
 .58 
 
 1.00 # 
 
 .98 
 .92 
 
 1.35 
 
 """."96' 
 .91 
 
 1.88 
 
 "i."32* 
 
 1.42 
 
 1.05 
 
 .92 
 
 1.75 
 
 0.90 
 
 6 
 
 .90 
 
 7. 
 
 .90 
 
 8. . 
 
 
 
 .60 
 
 .98 
 
 9. ....... 
 
 .82 
 .81 
 
 .87 
 1.36 
 1.14 
 1.08 
 
 
 
 .90 
 
 10 
 
 
 1.20 
 
 1.12 
 1.14 
 1.30 
 
 .98 
 .89 
 
 .88 
 
 
 .86 
 
 11 
 
 .70 
 .70 
 .70 
 .70 
 .60 
 
 .50 
 
 
 1.11 
 
 .81 
 
 12 
 
 .79 
 
 
 .80 
 
 13 
 
 
 .92 
 1.19 
 
 .79 
 
 14 
 
 
 .69 
 
 .81 
 
 15 
 
 .85 
 
 16 
 
 .88 
 
 .61 
 
 
 1.10 
 
 17 
 
 1.22 
 
 1.14 
 
 .98 
 
 1.30 
 
 .86 
 .84 
 .88 
 
 
 1.02 
 
 .81 
 
 1.00 
 
 18 
 
 
 .88 
 .89 
 .89 
 
 .88 
 
 .92 
 
 .94 
 
 1.00 
 
 .80 
 
 
 1.06 
 1.22 
 
 1.38 
 1.38 
 1.33 
 
 1.20 
 1.17 
 1.22 
 
 1.02 
 
 19 
 
 .44 
 .44 
 
 .44 
 .44 
 .44 
 .44 
 .42 
 
 .42 
 .42 
 .38 
 .35 
 .35 
 
 
 
 .98 
 .96 
 
 1.01 
 
 1.18 
 
 20 
 
 
 .90 
 
 
 21 
 
 
 .72 
 .74 
 .71 
 .66 
 
 .61 
 
 .58 
 .54 
 
 .58 
 
 "i.'42" 
 
 ""i.'52" 
 1.24 
 
 1.08 
 '"i.'78~ 
 
 1.30 
 
 22 
 
 .70 
 
 
 
 
 
 23 
 
 
 
 .70 
 .74 
 .71 
 
 .65 
 .89 
 
 
 24 , 
 
 .71 
 
 
 
 
 25 
 
 1.10 
 .92 
 
 .85 
 
 1.10 
 1.03 
 
 .82 
 .78 
 .86 
 
 
 .82 
 
 .89 
 .84 
 .81 
 .82 
 .76 
 .70 
 
 .95 
 
 .91 
 
 .88 
 
 1.11 
 
 1.19 
 
 1.01 
 
 1.05 
 
 26 
 
 1.10 
 
 .99 
 .96 
 
 .70 
 "'."68" 
 
 1.08 
 1.10 
 
 1.08 
 
 
 27 
 
 
 28 
 
 .99 
 
 29 
 
 1.00 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in secon 
 
 , at station No. 81 at 2,700-foot level, near Hilo, Hawaii, 
 for 1912. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 2.3 
 2.1 
 1.9 
 1.0 
 1.3 
 
 1.3 
 1.3 
 
 1.8 
 2.1 
 1.8 
 
 11 
 
 
 1.5 
 3.6 
 7.2 
 11.4 
 16.0 
 
 8.2 
 10.6 
 
 8.2 
 10.6 
 12.2 
 
 21 . 
 
 13.4 
 13.2 
 13.2 
 13.0 
 13.0 
 
 10.0 
 3.4 
 3.4 
 3.3 
 2.4 
 
 3.4 
 
 2 
 
 
 12 
 
 
 22 . 
 
 2.8 
 
 3 
 
 
 13 
 
 
 23 
 
 2.3 
 
 4 
 
 
 14 
 
 5.0 
 12.6 
 
 5.2 
 8.2 
 11.2 
 32.0 
 13.4 
 
 24. . 
 
 3.4 
 
 5... 
 
 
 15 
 
 25 
 
 3.2 
 
 6 
 
 
 16 
 
 26 
 
 2 8 
 
 7 
 
 
 17 
 
 27 
 
 2.7 
 
 8 
 
 
 18 
 
 28 
 
 2.7 
 
 9 , 
 
 
 19 
 
 29 
 
 2.5 
 
 10. 
 
 
 20 
 
 30 
 
 2.5 
 
 
 
 
 31 
 
 2.5 
 
 
 
 
 
356 
 
 WATEE KESOTJKCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 81 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 1.40 
 
 0.10 
 
 6.00 
 
 10.00 
 
 5.00 
 
 0.70 
 
 3.20 
 
 . 1.20 
 
 9.00 
 
 3.00 
 
 20.00 
 
 1.40 
 
 .10 
 
 9.00 
 
 9.00 
 
 5.50 
 
 .70 
 
 4.50 
 
 1.10 
 
 10.00 
 
 2.40 
 
 19.00 
 
 1.40 
 
 .10 
 
 7.00 
 
 8.20 
 
 5.00 
 
 .70 
 
 8.00 
 
 8.00 
 
 16.00 
 
 2.40 
 
 18.00 
 
 1.40 
 
 .10 
 
 6.80 
 
 8.80 
 
 6.00 
 
 .60 
 
 6.00 
 
 6.60 
 
 18.00 
 
 2.40 
 
 15.00 
 
 1.40 
 
 .10 
 
 2.40 
 
 8.80 
 
 7.00 
 
 .60 
 
 5.00 
 
 4.40 
 
 9.80 
 
 2.10 
 
 12.00 
 
 1.40 
 
 .10 
 
 1.80 
 
 9.40 
 
 6.00 
 
 .60 
 
 4.70 
 
 3.70 
 
 10.00 
 
 1.30 
 
 8.00 
 
 1.40 
 
 .10 
 
 2.50 
 
 18.00 
 
 5.00 
 
 .70 
 
 3.70 
 
 3.00 
 
 11.00 
 
 1.10 
 
 3.40 
 
 1.60 
 
 .10 
 
 2.50 
 
 17.00 
 
 4.00 
 
 .70 
 
 3.60 
 
 2.80 
 
 7.80 
 
 1.10 
 
 3.60 
 
 1.50 
 
 .10 
 
 2.50 
 
 16.00 
 
 4.00 
 
 .70 
 
 3.60 
 
 3.40 
 
 5.00 
 
 1.30 
 
 25.00 
 
 1.50 
 
 .10 
 
 2.40 
 
 9.00 
 
 3.20 
 
 .80 
 
 5.40 
 
 3.60 
 
 4.70 
 
 1.50 
 
 26.00 
 
 1.40 
 
 .10 
 
 3.10 
 
 7.40 
 
 2.70 
 
 .90 
 
 7.20 
 
 3.40 
 
 4.40 
 
 1.30 
 
 25.00 
 
 1.40 
 
 .10 
 
 12.00 
 
 7.80 
 
 2.20 
 
 1.00 
 
 5.40 
 
 3.30 
 
 6.60 
 
 3.00 
 
 11.00 
 
 1.40 
 
 1.40 
 
 7.80 
 
 11.00 
 
 2.40 
 
 1.20 
 
 3.70 
 
 3.50 
 
 5.80 
 
 2.50 
 
 13.00 
 
 1.40 
 
 .70 
 
 6.60 
 
 4.70 
 
 2.70 
 
 1.30 
 
 8.80 
 
 3.70 
 
 5.60 
 
 3.40 
 
 6.00 
 
 .70 
 
 .30 
 
 7.50 
 
 3.30 
 
 3.00 
 
 1.00 
 
 7.70 
 
 4.70 
 
 4.80 
 
 3.40 
 
 3.70 
 
 .30 
 
 .20 
 
 8.50 
 
 3.30 
 
 3.20 
 
 .80 
 
 6.50 
 
 3.60 
 
 4.80 
 
 3.40 
 
 22.00 
 
 .30 
 
 .10 
 
 9.40 
 
 3.20 
 
 2.80 
 
 1.00 
 
 5.40 
 
 2.40 
 
 3.70 
 
 10.00 
 
 24.00 
 
 .20 
 
 .10 
 
 7.80 
 
 3.20 
 
 2.30 
 
 1.50 
 
 5.00 
 
 3.80 
 
 2.50 
 
 6.20 
 
 13.00 
 
 .20 
 
 .10 
 
 4.70 
 
 3.30 
 
 2.00 
 
 2.50 
 
 4.70 
 
 5.20 
 
 2.30 
 
 9.40 
 
 13.00 
 
 .20 
 
 2.00 
 
 11.00 
 
 3.30 
 
 
 3.40 
 
 4.40 
 
 2.00 
 
 2.00 
 
 11.00 
 
 12.00 
 
 .20 
 
 14.00 
 
 3.00 
 
 3.20 
 
 1.70 
 
 4.00 
 
 4.00 
 
 1.80 
 
 1.60 
 
 12.00 
 
 9.00 
 
 .20 
 
 20.00 
 
 2.70 
 
 3.70 
 
 1.40 
 
 4.00 
 
 3.60 
 
 1.60 
 
 1.80 
 
 13.00 
 
 8.40 
 
 .20 
 
 26.00 
 
 3.20 
 
 4.00 
 
 1.40 
 
 5.00 
 
 3.20 
 
 1.40 
 
 1.50 
 
 20.00 
 
 9.40 
 
 .20 
 
 18.00 
 
 3.00 
 
 5.00 
 
 1.50 
 
 5.00 
 
 2.80 
 
 1.80 
 
 1.10 
 
 15.00 
 
 7.00 
 
 .10 
 
 7.00 
 
 2.80 
 
 6.00 
 
 1.50 
 
 6.00 
 
 2.50 
 
 1.50 
 
 1.00 
 
 10.00 
 
 4.20 
 
 .10 
 
 3.70 
 
 7.00 
 
 7.00 
 
 1.40 
 
 6.60 
 
 3.30 
 
 1.10 
 
 .80 
 
 6.60 
 
 3.60 
 
 .10 
 
 3.00 
 
 5.60 
 
 4.80 
 
 1.40 
 
 7.00 
 
 2.70 
 
 3.30 
 
 .60 
 
 26.00 
 
 3.20 
 
 .10 
 
 3.00 
 
 2.50 
 
 4.40 
 
 1.30 
 
 6.60 
 
 2.40 
 
 3.00 
 
 .50 
 
 25.00 
 
 7.20 
 
 .10 
 
 3.00 
 
 2.10 
 
 3.00 
 
 1.30 
 
 5.00 
 
 2.50 
 
 2.50 
 
 .60 
 
 25.00 
 
 8.80 
 
 .10 
 
 
 3.00 
 
 4.00 
 
 1.00 
 
 4.00 
 
 1.90 
 
 2.00 
 
 4.00 
 
 22.00 
 
 5.20 
 
 .10 
 
 
 15.00 
 
 
 .80 
 
 
 1.40 
 
 3.00 
 
 
 21.00 
 
 
 Dec. 
 
 1. 
 
 2. 
 3. 
 4. 
 5. 
 
 6. 
 
 7. 
 8. 
 9. 
 10. 
 
 11. 
 12. 
 13. 
 14. 
 15. 
 
 16. 
 17. 
 
 18. 
 19. 
 20. 
 
 21. 
 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 12.00 
 
 18.00 
 
 10.00 
 
 6.00 
 
 3.40 
 3.40 
 4.70 
 3.40 
 3.00 
 
 2.40 
 2.30 
 2.20 
 2.40 
 2.80 
 
 7.00 
 5.00 
 5.40 
 8.60 
 15.00 
 
 11.00 
 18.00 
 25.00 
 16.00 
 6.00 
 
 9.00 
 6.00 
 4.80 
 5.00 
 4.00 
 3.00 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 81 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 November 14-30. 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 discharge 
 in second- 
 feet. 
 
 10.30 
 4.43 
 
 .75 
 
 3.58 
 5.52 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 348 
 252 
 
 46.10 
 206. 00 
 339. 00 
 416.00 
 176.00 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 
 2.49 
 4.41 
 3.11 
 5.24 
 8.64 
 12.00 
 7.36 
 
 5.24 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 148. 00 
 271.00 
 191.00 
 312.00 
 531.00 
 714.00 
 453. 00 
 
 5,800.00 
 
 Discharge measurements at station No. 82 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug 23 
 
 Feet. 
 0.60 
 .53 
 
 Sec.-ft. 
 
 
 Nov. 15 
 
 Feet. 
 0.64 
 .60 
 
 Sec.-ft. 
 0.08 
 
 Sept. 29 
 
 Dec. 28 
 
 
 
 
 
 
 
 Note,— Bed of stream of silt, sand, and gravel; shifting. One channel, 
 
ISLAND OF HAWAII. 
 
 357 
 
 Daily gage height, in feet, at station No. 82 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.55 
 
 0.60 
 .71 
 
 
 
 
 
 
 2 
 
 
 
 0.88 
 
 .85 
 .92 
 .72 
 
 .65 
 
 .72 
 
 
 
 0.61 
 
 
 0.60 
 
 
 
 3 
 
 
 
 0.71 
 
 .94 
 
 .85 
 
 .89 
 
 
 
 
 
 4 
 
 
 "W 
 
 (a) 
 
 (3 
 
 0.62 
 .61 
 .59 
 
 fa) 
 {a) 
 
 
 
 
 .71 
 .68 
 
 """."64* 
 .61 
 .70 
 .71 
 
 '".'69' 
 
 '"."72" 
 .75 
 
 " "6." 96" 
 
 .91 
 .95 
 
 .88 
 .79 
 
 .75 
 
 .85 
 .78 
 .76 
 
 .72 
 
 .72 
 .66 
 .60 
 .59 
 
 .60 
 
 .59 
 
 .58 
 .56 
 .56 
 
 
 
 5 
 
 0.60 
 
 .60 
 .60 
 .65 
 
 1.20 
 
 .50 
 
 .75 
 
 .72 
 .68 
 
 "".62 
 
 0.85 
 
 "".hi" 
 
 .68 
 
 0.72 
 
 6 
 
 .68 
 
 7 .. 
 
 .68 
 
 8 
 
 
 
 .51 
 
 .70 
 
 9 . 
 
 .73 
 
 .74 
 
 .59 
 .76 
 .69 
 
 .58 
 
 
 
 .70 
 
 10 
 
 
 .73 
 
 .71 
 
 .76 
 .84 
 .71 
 .71 
 
 .78 
 
 
 .59 
 
 .55 
 .68 
 .65 
 .69 
 
 .70 
 
 "".'80' 
 
 .85 
 .70 
 .64 
 
 .96 
 
 .65 
 
 11 
 
 .60 
 .60 
 .60 
 .60 
 
 .58 
 
 
 .85 
 
 .64 
 
 12 
 
 .75 
 
 
 .61 
 
 13 . 
 
 
 .70 
 
 .78 
 
 .60 
 
 14 
 
 
 .60 
 
 .62 
 
 
 .68 
 
 
 .88 
 
 .56 
 
 
 .76 
 
 17... 
 
 .71 
 .59 
 .46 
 
 .80 
 
 .42 
 .41 
 
 .48 
 
 
 .70 
 
 .62 
 
 .70 
 
 
 
 .75 
 .75 
 .75 
 
 .74 
 .80 
 .85 
 .98 
 
 .73 
 
 
 " .74 
 .82 
 
 .88 
 .80 
 .76 
 
 .74 
 
 .74 
 .82 
 
 .71 
 
 19 
 
 .55 
 .55 
 
 .55 
 .54 
 *52 
 .52 
 .51 
 
 .51 
 .52 
 .45 
 .42 
 .40 
 
 
 
 .64 
 .65 
 
 .70 
 
 .84 
 
 20 
 
 
 .60 
 
 
 
 
 .58 
 .59 
 .55 
 .54 
 
 .52 
 .51 
 .51 
 
 .54 
 
 """.*96" 
 
 "'.'88' 
 .81 
 
 .76 
 '".'98' 
 
 1.08 
 
 22 
 
 .60 
 
 
 
 
 
 23 .. 
 
 
 
 .60 
 .62 
 .61 
 
 .58 
 .68 
 
 
 24 
 
 .61 
 
 
 
 
 25 
 
 .80 
 .68 
 
 .76 
 
 .82 
 .77 
 .62 
 .59 
 .68 
 
 
 .64 
 
 .71 
 .65 
 .61 
 .62 
 .61 
 .60 
 
 .65 
 
 .62 
 .62 
 .79 
 
 .78 
 .68 
 
 .75 
 
 26 
 
 1.00 
 .95 
 
 .89 
 
 .60 
 """."58' 
 
 .68 
 .71 
 
 .68 
 
 
 27 
 
 
 28 
 
 .62 
 
 29 
 
 .62 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Monthly discharge at station No. 
 
 o Channel dry. 
 at 2,700-foot level, near Hilo, Hawaii, for 1911- 
 
 Month. 
 
 November. 
 December. 
 
 1911. 
 
 January . . 
 February. 
 
 March 
 
 April 
 
 ay 
 
 1912. 
 
 Ap; 
 
 Ma- 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 00.10 
 0.10 
 
 .01 
 .01 
 .09 
 .09 
 .04 
 
 Run-off 
 
 (total in 
 
 acre-feet). 
 
 5.95 
 6.15 
 
 5.60 
 5.40 
 2.40 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year . 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.03 
 .04 
 .05 
 .05 
 .07 
 .07 
 
 .05 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.80 
 2.60 
 2.80 
 3.20 
 4.40 
 4.20 
 
 37.40 
 
 a Estimated. 
 
 Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
 record at camp near station No. 50. 
 
 Discharge measurements at station No. 83 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 23 
 
 Feet. 
 0.85 
 .80 
 
 Sec. -ft. 
 
 
 
 Feet. 
 0.80 
 .64 
 
 Sec.-ft. 
 0.02 
 
 Sept. 29 
 
 Dec. 28. 
 
 
 
 
 
 
 
 Note. — Bed of stream of silt, sand, and gravel; shifting. One channel. 
 
358 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, at station No. 83 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.70 
 
 0.85 
 .93 
 
 
 
 
 
 
 2 
 
 
 
 0.90 
 .96 
 .90 
 
 .81 
 
 .80 
 .96 
 
 
 
 0.82 
 
 
 0.82 
 
 
 
 3 
 
 
 
 0.95 
 
 1.08 
 
 .99 
 
 1.10 
 
 
 
 
 
 4 
 
 
 («) 
 («) 
 
 T 
 
 (o) 
 
 (a) 
 
 0.90 
 
 .80 
 
 .71 
 
 .66 
 .00 
 
 
 
 
 1.05 
 .98 
 
 "".91 
 .90 
 .90 
 .91 
 
 '"".*90' 
 
 "\*92" 
 .96 
 
 "6." 88" 
 
 .90 
 .98 
 .94 
 .90 
 
 .78 
 .90 
 .88 
 .86 
 .83 
 
 .84 
 .83 
 .80 
 .76 
 
 .84 
 
 .82 
 
 .81 
 .80 
 
 .81 
 
 
 
 5 
 
 0.90 
 
 .90 
 .90 
 .91 
 
 1.20 
 
 .65 
 
 1.00 
 
 .95 
 .90 
 
 ""."si" 
 
 0.81 
 
 ""."80" 
 
 .80 
 
 0.70 
 
 6 
 
 .60 
 
 7 
 
 .68 
 
 8 
 
 
 
 .70 
 
 .72 
 
 9 
 
 .94 
 .92 
 
 .95 
 
 .90 
 
 .96 
 
 1.01 
 
 
 
 .69 
 
 10 
 
 
 1.20 
 
 1.10 
 
 1.06 
 
 .99 
 
 .90 
 
 .90 
 
 .89 
 
 
 .80 
 
 .78 
 .80 
 .79 
 .80 
 
 .81 
 
 ""."si" 
 
 .81 
 .80 
 .80 
 
 .84 
 
 .62 
 
 11 
 
 .88 
 .88 
 .88 
 .88 
 .85 
 
 .84 
 
 
 1.00 
 
 .65 
 
 12... 
 
 .79 
 
 
 .64 
 
 13 
 
 
 .91 
 
 .98 
 
 .54 
 
 14 
 
 
 .76 
 
 .61 
 
 15 
 
 .65 
 
 16 
 
 .88 
 
 .69 
 
 
 .70 
 
 17 
 
 -.88 
 
 1.09 
 
 .96 
 
 .98 
 
 .95 
 ..91 
 .97 
 
 
 .85 
 
 .89 
 
 .61 
 
 18... 
 
 
 .90 
 .91 
 .91 
 
 .94 
 
 .9,5 
 
 .94 
 
 1.01 
 
 .87 
 
 
 .91 
 .99 
 
 .88 
 .84 
 .81 
 
 .81 
 .78 
 .81 
 
 .65 
 
 19 
 
 .80 
 .80 
 
 .80 
 .79 
 
 .78 
 .78 
 .76 
 
 .76 
 .76 
 .74 
 .71 
 .70 
 
 
 
 
 .80 
 .79 
 
 .93 
 
 .72 
 
 20 
 
 
 .74 
 
 
 21 
 
 
 .75 
 .81 
 .80 
 .80 
 
 .80 
 .80 
 .80 
 .80 
 
 ""."89" 
 
 "".'82" 
 .81 
 
 .80 
 "".'84" 
 
 .81 
 
 22 
 
 .89 
 
 
 
 
 
 23.. 
 
 
 
 .86 
 .89 
 
 .88 
 
 .82 
 .91 
 
 
 24 
 
 .90 
 
 
 
 
 25 
 
 .90 
 .79 
 
 .94 
 
 .91 
 .96 
 
 .82 
 .79 
 
 .88 
 
 
 .82 
 
 ..90 
 
 .84 
 .81 
 .84 
 .82 
 .81 
 
 .70 
 
 .69 
 .69 
 .73 
 
 .72 
 .70 
 
 .90 
 
 26 
 
 1.10 
 
 1.00 
 
 .99 
 
 .88 
 "".*80' 
 
 .81 
 .90 
 
 .81 
 
 
 27 
 
 
 28 
 
 .68 
 
 29 
 
 .68 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o Channel dry. 
 Monthly discharge at station No. 83 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month.. 
 
 November. 
 December . 
 
 1911. 
 
 January.. 
 February. 
 
 March 
 
 April 
 
 May 
 
 1912. 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 a0.03 
 a. 05 
 
 .003 
 
 .003 
 
 .02 
 
 .02 
 
 .006 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.78 
 3.08 
 
 .20 
 
 .20 
 
 1.00 
 
 1.00 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year . 
 
 discharge 
 
 in second 
 
 feet. 
 
 0.007 
 .006 
 .006 
 .010 
 .010 
 .010 
 .010 
 
 .01 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.40 
 .40 
 .40 
 .60 
 .80 
 
 6.60 
 
 a Estimated. 
 
 Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
 for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
 fall record at camp near station No. 50. 
 
ISLAND OF HAWAII. 
 
 359 
 
 Discharge measurements at station No. 84 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 23 
 
 Feet. 
 0.22 
 .23 
 
 Sec.-ft. 
 
 
 Nov. 15 
 
 Feet. 
 0.34 
 .30 
 
 Sec.-ft. 
 0.08 
 
 Sept. 29 
 
 Dec. 29 
 
 .06 
 
 
 
 
 
 Note. — Bed of stream of silt, sand, and gravel; shifting. One channel. 
 
 Daily gage height, in feet, at station No. 84 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.15 
 
 0.25 
 .34 
 
 
 
 
 
 
 2 
 
 
 
 0.35 
 .35 
 .32 
 
 .30 
 
 .28 
 .35 
 
 
 
 0.26 
 
 
 0.25 
 
 
 
 3 
 
 
 
 0.50 
 .60 
 
 .58 
 
 .61 
 
 
 
 
 
 4 
 
 
 "W 
 
 (a) 
 
 (a) 
 (a) 
 0.30 
 .24 
 
 (a) 
 
 (a) 
 (a) 
 
 
 
 
 .42 
 .39 
 
 "".31 
 .30 
 .32 
 .34 
 
 """."si" 
 
 "".'34* 
 
 .36 
 
 '"6." 39* 
 
 .40 
 .44 
 .38 
 .34 
 
 .31 
 .34 
 .31 
 .31 
 .29 
 
 .32 
 .30 
 .29 
 
 .28 
 
 .28 
 
 .26 
 
 .24 
 .22 
 
 .24 
 
 
 
 5 
 
 0.30 
 
 .30 
 .30 
 .31 
 
 0.90 
 
 .11 
 
 .38 
 
 .38 
 .30 
 
 *".*29* 
 
 0.38 
 
 "".31 
 .32 
 
 0.31 
 
 6 
 
 .30 
 
 7 
 
 .30 
 
 8 
 
 
 
 .20 
 
 .32 
 
 9 
 
 .36 
 .35 
 
 .36 
 .44 
 .46 
 .50 
 
 
 
 .32 
 
 10 
 
 
 .70 
 
 .65 
 .61 
 .51 
 .32 
 .40 
 
 .60 
 
 
 .25 
 
 .22 
 .30 
 .28 
 .31 
 
 .32 
 
 ""."46" 
 .42 
 .35 
 
 .34 
 
 .53 
 
 .31 
 
 11 
 
 .25 
 .25 
 .24 
 .24 
 .22 
 
 .21 
 
 
 .45 
 
 .31 
 
 12 
 
 .58 
 
 
 .30 
 
 13 
 
 
 .31 
 
 .38 
 
 .30 
 
 14 
 
 
 .29 
 
 .34 
 
 15 
 
 .39 
 
 16 
 
 .39 
 
 .20 
 
 
 .46 
 
 17 
 
 .41 
 .55 
 .40 
 .45 
 
 .32 
 .33 
 
 .36 
 
 
 .32 
 
 .29 
 
 .41 
 
 18 
 
 
 .45 
 .51 
 .55 
 
 .61 
 .58 
 .61 
 .65 
 
 .28 
 
 
 .41 
 
 .49 
 
 .44 
 .40 
 .38 
 
 .38 
 .36 
 .38 
 
 .44 
 
 19 
 
 .18 
 
 .15 
 
 .15 
 .15 
 .12 
 .12 
 .11 
 
 .11 
 .11 
 .09 
 (a) 
 
 (a) 
 
 
 
 .32 
 .31 
 
 .32 
 
 .55 
 
 20 .... 
 
 
 .22 
 
 
 21 
 
 
 .25 
 .26 
 .25 
 .25 
 
 .24 
 .22 
 .22 
 .23 
 
 "*.*49" 
 
 ""."42" 
 .35 
 
 .30 
 ""."55" 
 
 .68 
 
 22 
 
 .28 
 
 
 
 
 
 23 
 
 
 
 .25 
 .26 
 
 .25 
 
 .22 
 .32 
 
 
 24 
 
 .30 
 
 
 
 
 25 
 
 .31 
 .26 
 
 .36 
 
 .35 
 .32 
 .30 
 .28 
 .34 
 
 
 .30 
 
 .32 
 .31 
 .29 
 .31 
 .29 
 .28 
 
 .34 
 
 .31 
 .31 
 .38 
 .38 
 .34 
 
 .41 
 
 26 
 
 .70 
 .61 
 .61 
 
 .25 
 "".'26' 
 
 .35 
 .41 
 .35 
 
 
 27 
 
 
 28 
 
 .30 
 
 29 
 
 .30 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 a Channel dry. 
 
 Daily discharge, in second-feet, at station No. 84 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 11 
 
 
 0.05 
 .16 
 .34 
 .52 
 .73 
 
 .60 
 .67 
 .72 
 .73 
 .82 
 
 21 
 
 , 0.37 
 .36 
 .34 
 .33 
 .32 
 
 .28 
 .05 
 .05 
 .05 
 .05 
 
 0.72 
 
 2 
 
 
 12 . 
 
 
 22 
 
 .60 
 
 3 
 
 
 13 
 
 
 23 
 
 .45 
 
 4 
 
 
 14 
 
 0.30 
 .22 
 
 .22 
 .27 
 .33 
 .45 
 .37 
 
 24 
 
 .63 
 
 5 
 
 
 15.... 
 
 25 
 
 ,60 
 
 6 
 
 
 16 
 
 26 
 
 .60 
 
 7 
 
 
 17 
 
 27 . 
 
 .52 
 
 8 
 
 
 18 
 
 28 . 
 
 .52 
 
 9 
 
 
 19 
 
 29 
 
 .60 
 
 10 
 
 
 20 
 
 30 .. 
 
 .57 
 
 
 
 
 31 
 
 .52 
 
 
 
 
 
360 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 84 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 0.10 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .20 
 .25 
 .30 
 .20 
 
 .20 
 .15 
 .40 
 .15 
 .20 
 
 .05 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .05 
 .05 
 .05 
 .10 
 .70 
 
 0.50 
 .40 
 .30 
 .45 
 .40 
 
 .45 
 .70 
 .65 
 .65 
 .60 
 
 .50 
 .45 
 .30 
 .05 
 .15 
 
 .20 
 .20 
 .20 
 .30 
 .40 
 
 .45 
 .40 
 .45 
 .50 
 .50 
 
 .60 
 .45 
 .45 
 .30 
 .30 
 
 0.30 
 .30 
 .50 
 .70 
 .90 
 
 .80 
 .60 
 .50 
 .50 
 .45 
 
 .40 
 .40 
 .30 
 .20 
 .20 
 
 .15 
 .10 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 " "6." 05' 
 
 .10 
 .15 
 .10 
 
 0.05 
 .10 
 .30 
 .20 
 .15 
 
 .15 
 .05 
 .05 
 .05 
 .10 
 
 .20 
 .10 
 .05 
 .15 
 .10 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.05 
 .05 
 .05 
 .20 
 .15 
 
 .10 
 .05 
 .05 
 .05 
 .10 
 
 .10 
 .05 
 .10 
 .10 
 .10 
 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 0.20 
 .30 
 .40 
 .60 
 .15 
 
 .15 
 .20 
 .15 
 .10 
 .10 
 
 .05 
 .10 
 .05 
 .05 
 .05 
 
 ..05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .20 
 
 0.10 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .50 
 .15 
 .30 
 .30 
 
 .30 
 .30 
 .60 
 .20 
 .10 
 
 .05 
 .90 
 .80 
 .60 
 .40 
 .20 
 
 0.30 
 .40 
 .50 
 .20 
 .15 
 
 .10 
 .05 
 .05 
 .05 
 .10 
 
 .15 
 .15 
 .20 
 .10 
 .10 
 
 .35 
 .30 
 .20 
 .15 
 .15 
 
 .15 
 .10 
 .15 
 .10 
 .10 
 
 .05 
 .05 
 .15 
 .15 
 .10 
 
 0.30 
 
 2 
 
 
 
 .60 
 
 3 
 
 
 
 .40 
 
 4 
 
 
 
 .10 
 
 5 
 
 0.05 
 
 .05 
 .05 
 .05 
 
 
 .05 
 
 6 . 
 
 .05 
 
 7 
 
 .05 
 
 8 
 
 .05 
 
 9 
 
 .05 
 
 10 
 
 
 
 .05 
 
 11 
 
 .05 
 .05 
 
 "6." 05" 
 
 .05 
 
 12 
 
 .05 
 
 13 
 
 .05 
 
 14.. 
 
 
 .10 
 
 
 
 
 .15 
 
 16 
 
 
 
 .25 
 
 17 
 
 
 
 .15 
 
 18 
 
 
 
 .25 
 
 19 
 
 
 
 .40 
 
 20.. 
 
 
 
 .50 
 
 21 
 
 
 
 .70 
 
 22 
 
 
 
 .80 
 
 23 
 
 
 
 .90 
 
 24 
 
 
 
 .60 
 
 25 
 
 
 
 .15 
 
 26 
 
 
 
 .20 
 
 27 
 
 
 
 .10 
 
 28 
 
 
 
 .05 
 
 29.... 
 
 
 
 .05 
 
 30 
 
 
 
 .05 
 
 31 
 
 
 
 .05 
 
 
 
 
 
 Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
 gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
 near station No. 50. 
 
 Monthly 
 
 at station No. 84 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 November 14-30. 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 0.28 
 
 Run-off 
 (total in 
 acre-feet). 
 
 9.32 
 24.20 
 
 1.23 
 
 2.88 
 
 24.40 
 16.00 
 
 Month. 
 
 1912. —Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second 
 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 0.05 
 .09 
 .07 
 .12 
 .21 
 .16 
 .24 
 
 .15 
 
 2.98 
 5.53 
 4.30 
 7.14 
 
 12.90 
 9.52 
 
 14.80 
 
 111.00 
 
ISLAND OF HAWAII. 
 
 361 
 
 Discharge measurements at station No. 85 at 2,700-foot level, near Kilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 23 
 
 Feet. 
 0.75 
 
 .72 
 
 Sec.-ft. 
 1.47 
 .38 
 
 Nov.15 : 
 
 Feet. 
 0.85 
 .80 
 
 Sec.-ft. 
 2.96 
 
 Sept. 29 
 
 Dec. 29 
 
 2.04 
 
 
 
 
 Note. — Bed of stream of sand and small cobbles; probably slightly shifting. One channel. 
 
 Daily gage height, in feet, at station No. 85 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.70 
 
 0.88 
 
 .87 
 
 
 
 
 
 
 2. . 
 
 
 
 1.00 
 .95 
 .96 
 .80 
 
 .78 
 .85 
 
 
 
 0.72 
 
 
 0.80 
 
 
 
 3 
 
 
 
 1.00 
 1.00 
 1.02 
 
 1.16 
 
 
 
 
 
 4. 
 
 
 0.61 
 .61 
 
 "".'65' 
 .65 
 .61 
 
 .61 
 .60 
 .72 
 .71 
 .69 
 
 .69 
 .69 
 
 
 
 
 .98 
 .94 
 
 '".'si' 
 
 .80 
 .88 
 .89 
 
 ""."85" 
 
 "".'88' 
 .94 
 
 "6.96' 
 
 .98 
 
 1.01 
 
 .94 
 
 .91 
 
 .88 
 .90 
 .88 
 .86 
 .82 
 
 .84 
 .82 
 .80 
 .78 
 
 .81 
 .79 
 
 .76 
 .75 
 .75 
 
 
 
 5 
 
 6 
 
 0.75 
 
 .75 
 .75 
 .80 
 
 1.38 
 
 .70 
 
 .90 
 
 .88 
 .83 
 
 ""."80' 
 
 0.96 
 
 "".82' 
 
 .84 
 
 0.85 
 .80 
 
 7... 
 
 .85 
 
 8... 
 
 
 
 .71 
 
 .98 
 
 9 
 
 .89 
 .88 
 
 .87 
 
 .98 
 
 1.12 
 
 1.18 
 
 
 
 .90 
 
 10 
 
 
 1.18 
 
 1.18 
 
 1.09 
 
 .98 
 
 .83 
 
 .81 
 
 .98 
 
 
 .74 
 
 .71 
 
 .82 
 .81 
 .85 
 
 .84 
 
 "i.'oi' 
 
 1.08 
 .91 
 
 .84 
 
 1.18 
 
 .88 
 
 11 
 
 .71 
 .71 
 
 .70 
 .70 
 .70 
 
 .70 
 
 
 1.07 
 
 .75 
 
 12 
 
 .88 
 
 
 .80 
 
 13 
 
 
 .85 
 1.02 
 
 .79 
 
 14 
 
 
 .80 
 
 .81 
 
 15 
 
 .92 
 
 16 
 
 .69 
 
 .78 
 
 
 .95 
 
 17 
 
 .82 
 1.20 
 
 .85 
 .85 
 
 .82 
 .80 
 .86 
 
 
 .91 
 
 .80 
 
 .84 
 
 18 
 
 
 .90 
 .91 
 .91 
 
 .94 
 
 .98 
 
 .99 
 
 1.10 
 
 .87 
 
 
 .98 
 1.04 
 
 1.11 
 
 1.02 
 .96 
 
 .95 
 .91 
 .96 
 
 .90 
 
 19 
 
 .70 
 .70 
 
 .70 
 .69 
 
 .68 
 .68 
 .66 
 
 .66 
 .66 
 .64 
 .62 
 
 
 
 .84 
 .86 
 
 .90 
 
 1.01 
 
 20 
 
 
 .80 
 
 
 21 
 
 
 .75 
 
 .78 
 .75 
 
 .74 
 
 .72 
 .72 
 .71 
 .72 
 
 "i.'09" 
 
 "i'.bh' 
 
 .95 
 
 .84 
 
 "i.'2i* 
 
 1.11 
 
 22 
 
 .75 
 
 
 
 
 
 23 
 
 
 
 .75 
 .76 
 .74 
 
 .71 
 .80 
 
 
 24 
 
 .81 
 
 
 
 
 25 
 
 .90 
 
 .81 
 
 .88 
 
 .91 
 
 .88 
 .80 
 .78 
 
 
 .81 
 
 .82 
 .82 
 .79 
 .81 
 .79 
 .78 
 
 .88 
 
 .84 
 .82 
 .95 
 .96 
 .85 
 
 .95 
 
 26 
 
 27 
 
 1.25 
 1.18 
 1.12 
 
 .79 
 
 ""."78' 
 
 .80 
 .90 
 .80 
 
 
 28 
 
 .88 
 
 29 
 
 .80 
 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 85 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 1.04 
 1.04 
 1.04 
 1.04 
 1.38 
 
 1.38 
 1.20 
 1.74 
 2.28 
 1.74 
 
 11:.. .. 
 
 
 1.20 
 2.46 
 3.72 
 5.60 
 13^,60 
 
 4.26 
 6.20 
 4.26 
 6.20 
 9.22 
 
 21 
 
 14.90 
 14.70 
 14.50 
 14.30 
 14.30 
 
 10.10 
 2.10 
 2.10 
 1.92 
 1.04 
 
 3.54 
 
 2 
 
 
 12 
 
 
 22 . 
 
 2.10 
 
 3 
 
 
 13 
 
 
 23 .. 
 
 1.74 
 
 4 
 
 
 14 
 
 3.90 
 5.40 
 
 5.40 
 
 5.80 
 6.20 
 18.90 
 14.90 
 
 24... 
 
 3.00 
 
 5 
 
 
 15 
 
 25... 
 
 2.28 
 
 6 
 
 
 16 
 
 26... . 
 
 2.10 
 
 7 
 
 
 17 
 
 18 . 
 
 27 
 
 2.10 
 
 8 
 
 
 28 
 
 2.10 
 
 9 
 
 
 19... 
 
 29 
 
 2.46 
 
 10 
 
 
 20 
 
 30 
 
 2.10 
 
 
 
 
 31 
 
 2.10 
 
 
 
 
 
362 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 85 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.20 
 1.20 
 1.20 
 1.20 
 1.20 
 
 1.20 
 1.20 
 2.10 
 1.20 
 1.20 
 
 .55 
 .55 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .30 
 .25 
 .25 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 0.05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 .70 
 .55 
 .30 
 
 .30 
 
 .30 
 
 .30 
 
 1.00 
 
 3.50 
 
 8.00 
 12.00 
 14.50 
 9.00 
 3.90 
 
 2.25 
 4.00 
 4.50 
 5.00 
 
 5.00 
 5.80 
 4.80 
 5.00 
 2.10 
 
 1.70 
 3.00 
 3.50 
 3.70 
 3.50 
 
 3.35 
 
 5.00 
 8.30 
 9.65 
 7.00 
 
 4.00 
 2.50 
 10.10 
 3.00 
 3.00 
 
 2.50 
 2.10 
 3.20 
 2.50 
 3.50 
 
 4.10 
 3.50 
 2.10 
 1.70 
 3.20 
 10.00 
 
 7.00 
 6.00 
 5.80 
 5.80 
 6.20 
 
 9.20 
 14.50 
 13.00 
 12.00 
 
 9.65 
 
 9.65 
 7.70 
 5.00 
 2.60 
 2.30 
 
 2.50 
 5.00 
 3.90 
 4.10 
 4.10 
 
 4.60 
 5.00 
 5.50 
 7.90 
 10.00 
 
 11.20 
 9.65 
 8.30 
 6.00 
 6.00 
 
 7.00 
 8.00 
 6.00 
 9.00 
 14.10 
 
 11.00 
 5.00 
 5.60 
 5.00 
 5.00 
 
 4.00 
 3.50 
 3.00 
 2.00 
 1.00 
 
 .30 
 
 .50 
 
 3.35 
 
 2.00 
 
 1.00 
 
 1.00 
 1.20 
 3.00 
 2.38 
 2.00 
 
 1.90 
 1.80 
 1.70 
 1.80 
 1.40 
 1.00 
 
 0.40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .50 
 .55 
 .60 
 .60" 
 
 .60 
 
 .60 
 
 .60 
 
 2.10 
 
 1.90 
 
 1.70 
 1.80 
 1.90 
 2.00 
 2.10 
 
 2.10 
 2.10 
 2.10 
 2.10 
 2.10 
 
 2.10 
 3.90 
 2.10 
 2.50 
 2.50 
 
 3.50 
 3.35 
 6.00 
 4.00 
 3.90 
 
 3.50 
 
 2.60 
 2.20 
 2.10 
 2.10 
 
 7.20 
 5.00 
 3.00 
 6.20 
 5.00 
 
 4.00 
 4.10 
 3.50 
 2.80 
 3.20 
 
 2.00 
 3.00 
 4.00 
 3.00 
 2.30 
 
 2.50 
 2.50 
 1.90 
 2.30 
 1.90 
 1.70 
 
 1.50 
 .70 
 7.00 
 5.00 
 4.60 
 
 3.00 
 2.30 
 2.10 
 3.50 
 3.70 
 
 3.30 
 3.00 
 3.30 
 3.50 
 4.60 
 
 2.00 
 2.10 
 2.50 
 3.90 
 2.80 
 
 2.00 
 1.20 
 1.20 
 1.40 
 1.00 
 
 .60 
 2.10 
 4.00 
 3.00 
 2.50 
 3.00 
 
 5.00 
 6.00 
 9.00 
 13.00 
 5.00 
 
 5.40 
 6.00 
 4.60 
 4.10 
 3.80 
 
 3.50 
 
 3.90 
 3.50 
 3.20 
 2.50 
 
 2.80 
 2.50 
 2.10 
 1.70 
 1.40 
 
 1.20 
 1.70 
 1.20 
 1.00 
 .80 
 
 .70 
 .70 
 .55 
 .70 
 . 4.00 
 
 3.00 
 2.10 
 2.50 
 2.30 
 1.90 
 
 1.40 
 1.20 
 1.20 
 1.00 
 1.00 
 
 .55 
 2.50 
 2.30 
 3.00 
 2.90 
 
 2.80 
 4.00 
 5.00 
 6.50 
 6.00 
 
 6.50 
 
 7.65 
 9.00 
 6.80 
 4.80 
 
 2.80 
 14.50 
 18.00 
 11.00 
 10.30 
 
 8.00 
 
 8.00 
 5.00 
 10.00 
 6.00 
 5.00 
 
 2.00 
 2.50 
 2.80 
 5.00 
 14.00 
 
 12.00 
 6.00 
 7.45 
 4.10 
 2.80 
 
 9.65 
 12.00 
 8.10 
 6.20 
 5.00 
 
 4.80 
 4.10 
 5.00 
 4.20 
 3.50 
 
 2.80 
 2.56 
 4.80 
 5.00 
 3.00 
 
 7.00 
 
 2 
 
 3 
 
 12.00 
 3.00 
 
 4 
 
 6.00 
 
 5 
 
 3.00 
 
 6 
 
 2.10 
 
 7 
 
 3.00 
 
 8 
 
 5.00 
 
 9 
 
 3.90 
 
 10 
 
 3.50 
 
 11 
 
 1.20 
 
 12 
 
 2.10 
 
 13... . 
 
 1.90 
 
 14 
 
 2.30 
 
 
 4.25 
 
 16 
 
 4.80 
 
 17 
 
 2.80 
 
 18 
 
 3.90 
 
 19 
 
 6.00 
 
 20 
 
 9.00 
 
 21 
 
 8.10 
 
 22 
 
 10.00 
 
 23 
 
 14.50 
 
 24 
 
 12.00 
 
 25 
 
 4.80 
 
 26 
 
 7.00 
 
 27 
 
 5.00 
 
 28 
 
 3.50 
 
 29 
 
 2.10 
 
 30 
 
 2.00 
 
 31 
 
 1.00 
 
 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 85 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 November 14-30. 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 8.85 
 3.10 
 
 .62 
 2.44 
 4.27 
 7.00 
 3.70 
 
 Run-off 
 (total in 
 acre-feet). 
 
 299 
 192 
 
 38.10 
 140 
 263 
 417 
 
 228 
 
 Month. 
 
 1912— Continued. 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 1.45 
 3.37 
 2.79 
 3.38 
 4.76 
 5.78 
 5.12 
 
 3.72 
 
 Run-off 
 (total in 
 acre-feet). 
 
 86.30 
 207 
 172 
 201 
 293 
 344 
 315 
 
 2,700 
 
 Discharge measurements at station No. 86 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 23 
 
 Feet. 
 1.54 
 1.46 
 
 Sec.-ft. 
 2.29 
 .68 
 
 Nov. 15.. 
 Dec. 29.. 
 
 
 Feet. 
 1.69 
 1.68 
 
 Sec.-ft. 
 6.31 
 
 Sept. 29 
 
 
 5.90 
 
 
 
 
 Note.— Bed of stream of sand and small cobbles; probably slightly shifting. One channel. 
 
ISLAND OF HAWAII. 
 
 363 
 
 Daily gage height, in feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 1.38 
 
 1.59 
 1.69 
 
 
 
 
 
 
 2 
 
 
 
 1.82 
 1.75 
 1.70 
 
 1.58 
 1.75 
 
 
 
 1.60 
 
 
 1.60 
 
 
 
 3 
 
 
 
 1.70 
 1.70 
 1.80 
 
 1.90 
 
 
 
 
 
 4 : 
 
 
 1.28 
 1.28 
 
 "i.'25" 
 1.25 
 1.24 
 
 1.24 
 1.22 
 1.50 
 
 1.48 
 
 1.36 
 1.32 
 
 
 
 
 1.74 
 1.68 
 
 "i."59* 
 1.54 
 1.60 
 1.65 
 
 i.eo 
 
 "i.'68* 
 1.78 
 
 **i.*84" 
 
 1.75 
 
 1.95 
 1.72 
 1.69 
 
 1.66 
 1.70 
 1.64 
 1.62 
 1.61 
 
 1.68 
 1.64 
 1.60 
 1.58 
 
 1.59 
 1.55 
 
 1.54 
 1.51 
 1.50 
 
 
 
 5 
 
 1.52 
 
 1.52 
 1.52 
 1.52 
 
 2.29 
 
 1.30 
 
 1.71 
 
 1.68 
 1.65 
 
 "i.'6o" 
 
 1.78 
 
 ' *£.*68* 
 1.69 
 
 1.70 
 
 6 
 
 1.68 
 
 7 
 
 1.70 
 
 8 
 
 
 
 1.50 
 
 1.88 
 
 9 
 
 1.71 
 1.71 
 
 1.77 
 1.85 
 
 
 
 1.70 
 
 10 
 
 
 2.30 
 
 2.78 
 1.89 
 1.80 
 1.70 
 
 1.80 
 
 
 1.54 
 
 1.52 
 
 1.64 
 1.59 
 1.61 
 
 1.62 
 
 *"i.*9o" 
 1.91 
 1.74 
 1.70 
 
 2.08 
 
 1.65 
 
 11 
 
 1.45 
 1.45 
 1.44 
 1.44 
 
 1.41 
 
 
 1.90 
 
 1.59 
 
 12 
 
 1.79 
 
 
 1.53 
 
 13 
 
 
 1.C1 
 1.80 
 
 1.48 
 
 14 
 
 
 1.60 
 
 1.48 
 
 
 1.53 
 
 16 
 
 1.71 
 
 1.45 
 
 
 1.72 
 
 17 
 
 1.78 
 
 
 1.68 
 
 1.59 
 
 1.59 
 
 18 
 
 
 1.83 
 1.96 
 1.95 
 
 1.96 
 2.04 
 2.05 
 2.15 
 
 1.87 
 
 
 1.72 
 1.82 
 
 1.89 
 1.92 
 1.78 
 
 1.76 
 1.76 
 1.75 
 
 1.61 
 
 19 
 
 1.40 
 1.40 
 
 1.40 
 
 1.38 
 1.38 
 1.38 
 1.36 
 
 1.36 
 1.36 
 1.35 
 1.34 
 1.34 
 
 
 1.85 
 1.90 
 
 1.84 
 1.78 
 1.86 
 
 
 1.56 
 1.52 
 
 1.72 
 
 
 20 
 
 
 1.50 
 
 
 21 
 
 
 1.55 
 1.56 
 1.52 
 1.51 
 
 1.50 
 1.49 
 1.48 
 1.46 
 
 "i.'95" 
 
 "1.98 
 
 1.72 
 
 1.68 
 
 ioi 
 
 1.85 
 
 22 
 
 1.52 
 
 
 
 
 
 23 
 
 
 
 1.54 
 1.55 
 1.54 
 
 1.50 
 1.71 
 
 
 24 
 
 1.60 
 
 
 
 
 25 
 
 1.65 
 1.51 
 
 1.66 
 
 1.71 
 1.66 
 1.59 
 1.56 
 2.01 
 
 
 1.61 
 
 1.60 
 1.62 
 1.59 
 1.51 
 1.51 
 1.50 
 
 1.70 
 
 1.68 
 1.65 
 1.78 
 1.80 
 1.70 
 
 1.69 
 
 26 
 
 2.15 
 
 2.08 
 1.90 
 
 1.50 
 1.40 
 
 1.58 
 1.71 
 1.58 
 
 
 27 
 
 
 28 
 
 1.72 
 
 29 
 
 1.69 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 3.22 
 2.50 
 2.28 
 1.84 
 1.84 
 
 1.84 
 1.62 
 3.46 
 4.26 
 3.46 
 
 11 
 
 
 2.28 
 14.80 
 31. 60 
 48.00 
 81.20 
 
 32.40 
 38.00 
 36.00 
 40.00 
 45.20 
 
 21.. 
 
 10.80 
 11.20 
 11.60 
 12.00 
 12.00 
 
 7.88 
 5.10 
 5.10 
 5.25 
 4.26 
 
 6.00 
 
 2 
 
 
 12 
 
 
 22 
 
 2.50 
 
 3 
 
 
 13 
 
 
 23 
 
 2.50 
 
 4 
 
 
 14 
 
 6.60 
 14.60 
 
 12.00 
 11.60 
 10.80 
 30.00 
 10.80 
 
 24. 
 
 .10 
 
 5 
 
 
 15 
 
 25 
 
 .10 
 
 6 
 
 
 16 
 
 26 
 
 .10 
 
 7 
 
 
 17 
 
 27 
 
 .10 
 
 8 
 
 
 18 
 
 28 
 
 .10 
 
 9 
 
 
 19 
 
 29 
 
 .10 
 
 10 
 
 
 20 
 
 30 
 
 .10 
 
 
 
 
 31 
 
 .10 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 1.60 
 1.60 
 1.60 
 1.60 
 1.60 
 
 1.60 
 1.60 
 1.60 
 1.25 
 1.95 
 
 .60 
 .60 
 .30 
 .30 
 .20 
 
 (a) 
 
 («) 
 (a) 
 (a) 
 (a) 
 
 u 
 
 n 
 $ 
 
 1.40 
 1.20 
 .10 
 
 6.00 
 10.00 
 8.20 
 6.60 
 5.00 
 
 3.50 
 8.20 
 7.50 
 6.80 
 6.80 
 
 7.70 
 12.00 
 20.00 
 15.00 
 10.00 
 
 15.00 
 10.00 
 6.60 
 6.60 
 10.00 
 
 14.00 
 35.00 
 35.00 
 30.00 
 30.00 
 
 49.00 
 14.00 
 10.00 
 6.60 
 6.80 
 
 20.00 
 20.00 
 25.00 
 25.00 
 30.00 
 
 30.00 
 15.00 
 13.00 
 11.00 
 10.00 
 
 10.00 
 
 10.00 
 
 9.00 
 
 8.00 
 
 7.00 
 
 0.10 
 
 ' "i.'46" 
 
 "3." 70 
 
 3.60 
 5.00 
 10.00 
 8.50 
 6.80 
 
 5.40 
 5.10 
 4.00 
 3.70 
 4.00 
 
 14.00 
 8.00 
 3.80 
 
 10.00 
 8.00 
 
 1.00 
 1.40 
 15.00 
 7.20 
 5.60 
 
 4.50 
 3.00 
 1.80 
 3.70 
 5.10 
 
 4.40 
 3.70 
 4.60 
 5.60 
 8.70 
 
 15.00 
 20.00 
 30.00 
 40.00 
 11.00 
 
 8.20 
 15.00 
 6.90 
 5.70 
 5.00 
 
 4.50 
 6.60 
 4.30 
 4.00 
 3.80 
 
 4.40 
 3.70 
 3.40 
 3.00 
 2.50 
 
 1.80 
 1.50 
 1.40 
 1.60 
 1.80 
 
 1.60 
 4.30 
 3.00 
 3.80 
 3.90 
 
 20.00 
 25.00 
 30.00 
 12.00 
 7.90 
 
 6.00 
 5.60 
 5.70 
 8.00 
 40.00 
 
 30.00 
 14.00 
 14.00 
 7.20 
 6.60 
 
 15.00 
 
 2 
 
 25.00 
 
 3 
 
 10.00 
 
 4 
 
 15.00 
 
 5 
 
 6.60 
 
 6 
 
 5 40 
 
 7 
 
 6.60 
 
 8 
 
 13.00 
 
 9 
 
 6 60 
 
 10 
 
 5.10 
 
 11 
 
 3.00 
 
 12 
 
 1.70 
 
 13 
 
 .80 
 
 14 
 
 .80 
 
 15 
 
 1.70 
 
364 
 
 WATER RE SOURCES OF HAWAII, 1912. 
 
 Daily discharge, in second-feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii 
 
 for 1912— Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 16 
 
 0.10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .10 
 .10 
 .10 
 
 .10 
 .10 
 .05 
 .05 
 .05 
 .05 
 
 0.10 
 .10 
 .10 
 .10 
 
 2.00 
 
 20.00 
 40.00 
 50.00 
 30.00 
 5.10 
 
 1.50 
 
 2.00 
 3.00 
 3.00 
 
 9.00 
 7.90 
 15.00 
 12.00 
 14.00 
 
 11.00 
 7.90 
 
 12.00 
 9.00 
 5.20 
 
 6.80 
 5.20 
 3.60 
 2.10 
 17.00 
 25.00 
 
 8.00 
 9.00 
 11.00 
 15.00 
 15.00 
 
 15.00 
 18.00 
 19.00 
 23.00 
 23.00 
 
 23.00 
 20.00 
 14.00 
 12.00 
 15.00 
 
 6.80 
 8.50 
 12.00 
 15.00 
 10.00 
 
 5.00 
 1.60 
 10.00 
 3.70 
 2.50 
 
 1.40 
 1.00 
 .10 
 .10 
 .10 
 .10 
 
 0.60 
 
 ""i."46 
 
 2.90 
 6.80 
 2.90 
 
 6.50 
 5.40 
 4.00 
 2.60 
 1.60 
 
 2.00 
 2.00 
 2.00 
 4.00 
 3.80 
 
 3.70 
 4.00 
 2.40 
 1.50 
 1.50 
 1.40 
 
 3.00 
 3.00 
 4.80 
 6.90 
 2.00 
 
 2.00 
 2.00 
 1.80 
 2.50 
 1.80 
 
 1.40 
 6.80 
 6.00 
 5.00 
 4.00 
 3.00 
 
 5.60 
 4.30 
 3.70 
 2.90 
 2.70 
 
 2.50 
 2.60 
 1.60 
 1.50 
 1.40 
 
 1.40 
 .90 
 .80 
 .70 
 
 5.00 
 
 4.00 
 15.00 
 
 6.90 
 10.00 
 10.00 
 
 12.00 
 15.00 
 30.00 
 16.00 
 7.00 
 
 5.40 
 50,00 
 40.00 
 30.00 
 17.00 
 15.00 
 
 20.00 
 30.00 
 13.00 
 14.00 
 8.70 
 
 8.40 
 8.40 
 8.20 
 7.40 
 6.60 
 
 5.40 
 5.10 
 
 8.70 
 10.00 
 6.60 
 
 6.90 
 
 17 
 
 3.00 
 
 18 
 
 3.80 
 
 19 
 
 7.00 
 
 20 
 
 15.00 
 
 21 
 
 12.00 
 
 22 
 
 20.00 
 
 23 
 
 35.00 
 
 24 
 
 20.00 
 
 25 
 
 5.70 
 
 26 
 
 8.00 
 
 27 
 
 28 
 
 29 
 
 7.50 
 7.00 
 5.70 
 
 30 
 
 3.00 
 
 
 3.00 
 
 
 
 Monthly discharge at station No. 86 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911 
 November 14-30. 
 December 
 
 1912 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 Mean 
 discharge 
 in second- 
 feet. 
 
 10.70 
 13.10 
 
 .63 
 5.51 
 9.55 
 17.30 
 10.40 
 
 Run-off 
 (total in 
 acre-feet). 
 
 359 
 
 38.7 
 317.0 
 587.0 
 1,030.0 
 640.0 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December. 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 Run-off 
 (total in 
 acre-feet). 
 
 1.00 
 
 4.78 
 4.24 
 7.25 
 10.50 
 13.10 
 9.00 
 
 7.76 
 
 59.5 
 294.0 
 261.0 
 4B1.0 
 646.0 
 780.0 
 553.0 
 
 5,640 
 
 a Channel dry. 
 
 Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Discharge measurements at station No. 86 A at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 
 Date. 
 
 Hydrographer. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 23 
 Dec. 29 
 
 E. O. Christiansen 
 
 Feet, 
 
 Sec-ft. 
 
 do 
 
 0.31 
 
 
 
 
 
 
 Note.— Bed of stream of sand and silt; shifting. One channel. 
 
 Daily gage height, in feet, at station No. 86 A at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Fataeff and Crevotapoff, observers.] 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 j 
 
 
 
 11 
 
 
 0.30 
 .30 
 .30 
 .30 
 
 '.30 
 
 .30 
 .30 
 .30 
 .31 
 
 21 . 
 
 0.36 
 .34 
 .38 
 
 0.35 
 
 2 
 
 
 
 12 
 
 
 22 
 
 
 3 
 
 
 
 13 
 
 
 23 
 
 
 4 
 
 
 
 14... 
 
 
 24 
 
 
 5 
 
 
 0.35 
 
 .32 
 .30 
 .31 
 .31 
 .30 
 
 15... 
 
 
 25 
 
 .34 
 
 .32 
 .32 
 .38 
 .38 
 .35 
 
 .40 
 
 6 
 
 
 16.... 
 
 
 26 
 
 
 7 
 
 
 17... 
 
 
 27... 
 
 
 8 
 
 
 18... 
 
 0.40 
 .41 
 .38 
 
 28... 
 
 .32 
 
 9 
 
 
 19 
 
 29 
 
 .31 
 
 10 
 
 
 20 
 
 30 
 
 
 
 
 
 31 
 
 
 
 
 
 
ISLAND OF HAWAII. 
 
 365 
 
 Discharge measurements at station No. 87 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
 [E. O. Christiansen, hydrographer.] 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Date. 
 
 Gage 
 height. 
 
 Dis- 
 charge. 
 
 Aug. 23 
 
 Feet. 
 1.05 
 .83 
 
 Sec.-ft. 
 1.08 
 .44 
 
 Nov. 15 
 
 Feet. 
 1.18 
 1.21 
 
 Sec.-ft. 
 1.74 
 
 Sept. 29 
 
 Dec. 29.... 
 
 1.96 
 
 
 
 
 Note. — Bed of stream of gravel and cobbles, with some small bowlders; probably permanent. One 
 channel. 
 
 Daily gage height, in feet, at station No. 87 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
 [Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 
 
 
 
 0.90 
 
 1.15 
 1.13 
 
 
 
 
 
 
 2 
 
 
 
 1.60 
 1.50 
 1.46 
 1.12 
 
 1.10 
 1.28 
 
 
 
 0.98 
 
 
 1.15 
 
 
 
 3 
 
 
 
 1.50 
 1.55 
 1.55 
 
 1.58 
 
 
 
 
 
 4 
 
 
 0.55 
 .54 
 
 '"'.hi' 
 .52 
 .52 
 
 .52 
 
 .51 
 
 1.10 
 
 .98 
 
 .82 
 
 .76 
 .71 
 
 
 
 
 1.54 
 1.41 
 
 "Lis" 
 
 1.10 
 1.15 
 1.16 
 
 "Lis" 
 
 "i.'30" 
 1.41 
 
 "i.'52 
 
 1.44 
 1.74 
 1.55 
 1.38 
 
 1.32 
 1.41 
 1.35 
 1.32 
 1.21 
 
 1.26 
 1.18 
 1.15 
 1.12 
 
 1.12 
 1.05 
 
 1.02 
 .98 
 .96 
 
 
 
 5 
 
 1.00 
 
 1.00 
 1.00 
 1.02 
 
 1.68 
 
 .88 
 
 1.28 
 
 1.22 
 1.20 
 
 "i.'i2" 
 
 1.36 
 
 "i.ii" 
 
 1.20 
 
 1.18 
 
 6 
 
 1.12 
 
 7 
 
 1.18 
 
 8 
 
 
 
 .90 
 
 1.32 
 
 9... 
 
 1.25 
 
 1.25 
 
 1.29 
 1.55 
 1.61 
 1.68 
 
 
 
 1.30 
 
 10 
 
 
 1.50 
 
 1.45 
 1.21 
 1.18 
 1.24 
 1.25 
 
 1.10 
 
 
 1.01 
 
 .98 
 1.20 
 1.14 
 1.21 
 
 1.24 
 
 V i."59" 
 1.60 
 1.40 
 1.19 
 
 1.71 
 
 1.15 
 
 11 
 
 .90 
 .90 
 
 .88 
 .88 
 .82 
 
 .81 
 
 
 1.71 
 
 1.10 
 
 12 
 
 i.09 
 
 
 1.08 
 
 13 
 
 
 1.43 
 1.60 
 
 .99 
 
 14 
 
 
 1.10 
 
 1.11 
 
 15 
 
 1.24 
 
 16 
 
 1.00 
 
 1.05 
 
 
 1.38 
 
 ]7 
 
 1.50 
 1.76 
 1.35 
 1.60 
 
 1.32 
 1.30 
 1.35 
 
 
 1.42 
 
 1.10 
 
 1.22 
 
 18 
 
 
 1.19 
 1.20 
 1.20 
 
 1.19 
 1.33 
 1.39 
 
 1.58 
 
 1.09 
 
 
 1.51 
 1.61 
 
 1.69 
 1.61 
 1.45 
 
 1.44 
 1.21 
 1.42 
 
 1.12 
 
 19 
 
 .80 
 .80 
 
 .80 
 .79 
 
 .78 
 .78 
 .76 
 
 .76 
 .78 
 .74 
 .75 
 .74 
 
 
 
 1.30 
 1.29 
 
 1.36 
 
 1.34 
 
 20 
 
 
 1.20 
 
 
 21 
 
 
 .96 
 .99 
 .95 
 .92 
 
 .89 
 .86 
 
 .85 
 .84 
 
 "1.72" 
 
 "i'76' 
 
 1.35 
 1.21 
 
 ""i."78" 
 
 1.41 
 
 22 
 
 1.00 
 
 
 
 
 
 23 
 
 
 
 .95 
 .96 
 .94 
 
 .93 
 1.34 
 
 
 24 
 
 1.11 
 
 
 
 
 25 
 
 1.21 
 .99 
 
 1.18 
 
 1.41 
 1.40 
 1.37 
 1.36 
 
 1.87 
 
 
 1.24 
 
 1.22 
 1.25 
 1.11 
 1.09 
 1.05 
 1.02 
 
 1.20 
 
 1.15 
 1.11 
 1.44 
 1.48 
 1.21 
 
 1.50 
 
 26 
 
 1.55 
 1.49 
 1.38 
 
 1.00 
 "'"."98' 
 
 1.31 
 1.41 
 1.31 
 
 
 27 
 
 
 28 
 
 1.22 
 
 29 
 
 1.20 
 
 30 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Daily discharge, in second-feet, at station No. 87 at 2,700-foot level, near Hilo, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 
 0.81 
 .75 
 
 .75 
 .75 
 
 .87 
 
 .87 
 .84 
 .90 
 1.10 
 .90 
 
 11 
 
 
 0.84 
 2.04 
 4.10 
 7.00 
 14.70 
 
 4.50 
 5.96 
 4.74 
 6.48 
 10.80 
 
 21 
 
 5.96 
 
 5.83 
 5.70 
 5.58 
 5.58 
 
 2.78 
 1.42 
 1.42 
 .90 
 
 .87 
 
 1.10 
 
 2 
 
 
 12 
 
 
 22 
 
 .84 
 
 3 
 
 
 13 
 
 
 23 
 
 .75 
 
 4 
 
 
 14 
 
 3.05 
 4.98 
 
 4.30 
 4.50 
 4.74 
 16.60 
 5.96 
 
 24 
 
 5.46 
 
 5 
 
 
 15 
 
 25 
 
 5.10 
 
 6 
 
 
 16 
 
 26 
 
 4.50 
 
 7 
 
 
 17 
 
 27 
 
 4.50 
 
 8 
 
 
 18 
 
 28 
 
 4.50 
 
 9 
 
 
 19... 
 
 29 
 
 5.10 
 
 10 
 
 
 20... 
 
 30 . 
 
 4.74 
 
 
 
 
 31 
 
 4.50 
 
 
 
 
 
366 
 
 Daily discharge, in second-feet, at station No. 87 at 2,700-foot level, near Eilo, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.90 
 .90 
 .90 
 .90 
 .90 
 
 .90 
 .90 
 1.00 
 .80 
 .80 
 
 .60 
 .60 
 .55 
 .55 
 .45 
 
 .40 
 .40 
 .40 
 .40 
 .40 
 
 .40 
 .40 
 .35 
 .35 
 .30 
 
 .30 
 .35 
 .30 
 .30 
 .30 
 .30 
 
 0.20 
 .10 
 .10 
 .05 
 .05 
 
 .05 
 .05 
 .05 
 .05 
 .05 
 
 .05 
 .05 
 1.30 
 .85 
 .45 
 
 .30 
 .20 
 .10 
 .10 
 1.00 
 
 5.00 
 7.00 
 8.00 
 6.00 
 2.00 
 
 1.85 
 1.80 
 1.70 
 1.60 
 
 3.00 
 5.70 
 4.50 
 4.10 
 1.40 
 
 1.30 
 2.45 
 2.35 
 2.25 
 2.25 
 
 2.55 
 5.10 
 
 5.85 
 6.70 
 4.00 
 
 4.00 
 4.50 
 7.85 
 3.05 
 5.70 
 
 2.80 
 2.60 
 3.05 
 2.40 
 1.80 
 
 3.60 
 3.50 
 3.25 
 3.15 
 9.50 
 10.00 
 
 8.00 
 6.00 
 4.50 
 4.50 
 4.50 
 
 5.50 
 8.00 
 7.00 
 6.00 
 4.50 
 
 4.00 
 1.95 
 1.80 
 2.20 
 2.25 
 
 2.10 
 
 2.00 
 1.85 
 1.90 
 1.90 
 
 1.85 
 2.85 
 3.40 
 5.50 
 5.00 
 
 4.50 
 4.40 
 3.30 
 3.00 
 3.00 
 
 3.00 
 2.00 
 4.00 
 5.00 
 6.75 
 
 5.00 
 4.00 
 3.00 
 2.00 
 1.30 
 
 1.30 
 1.25 
 1.10 
 1.00 
 1.00 
 
 .90 
 1.10 
 1.25 
 1.10 
 1.00 
 
 .90 
 
 .90 
 
 1.20 
 
 1.35 
 
 1.10 
 
 .90 
 .90 
 .85 
 .80 
 .80 
 .70 
 
 0.60 
 .60 
 .60 
 .60 
 .60 
 
 .55 
 .60 
 
 .60 
 .70 
 .80 
 
 .90 
 1.00 
 1.20 
 1.30 
 i.20 
 
 1.10 
 1.30 
 1.50 
 1.70 
 1.90 
 
 2.00 
 2.20 
 2.30 
 2.40 
 2.50 
 
 2.70 
 3.60 
 2.70 
 2.40 
 2.00 
 
 1.60 
 1.50 
 5.00 
 4.00 
 2.45 
 
 2.05 
 1.90 
 1.60 
 1.40 
 1.20 
 
 7.15 
 5.40 
 3.80 
 5.70 
 5.00 
 
 4.30 
 3.70 
 3.10 
 2.60 
 2.55 
 
 2.40 
 2.40 
 2.30 
 2.30 
 2.20 
 
 2.05 
 2.25 
 1.35 
 1.25 
 1.10 
 1.00 
 
 0.80 
 .85 
 8.00 
 5.00 
 3.60 
 
 2.60 
 1.60 
 1.30 
 1.60 
 1.65 
 
 1.60 
 1.60 
 2.10 
 2.60 
 3.60 
 
 2.40 
 1.30 
 2.20 
 3.15 
 2.50 
 
 2.00 
 
 1.50 
 
 .75 
 
 .80 
 
 .70 
 
 .70 
 2.95 
 2.00 
 1.80 
 1.50 
 2.00 
 
 3.50 
 4.00 
 6.00 
 7.00 
 4.75 
 
 3.90 
 7.55 
 5.10 
 3.30 
 3.00 
 
 2.80 
 3.60 
 3.05 
 2.80 
 1.95 
 
 2.30 
 1.75 
 1.60 
 1.40 
 1.10 
 
 .80 
 .85 
 .75 
 .65 
 .60 
 
 .60 
 .50 
 .50 
 .50 
 
 .80 
 
 1.20 
 1.60 
 1.50 
 1.40 
 1.10 
 
 1.00 
 .85 
 .80 
 .90 
 .95 
 
 .85 
 1.90 
 1.55 
 1.95 
 2.10 
 
 2.20 
 3.40 
 4.60 
 5.85 
 6.00 
 
 6.00 
 7.30 
 10.00 
 7.00 
 3.05 
 
 1.95 
 10 00 
 10.00 
 10.00 
 8.10 
 6.00 
 
 6.00 
 7.00 
 8.00 
 6.00 
 3.15 
 
 2.20 
 1.35 
 1.90 
 3.00 
 9.00 
 
 8.00 
 5.60 
 5.70 
 3.50 
 1.85 
 
 7.15 
 8.00 
 6.85 
 7.00 
 4.00 
 
 3.90 
 1.95 
 3.70 
 2.80 
 1.90 
 
 1.60 
 1.40 
 3.90 
 4.30 
 1.95 
 
 4.00 
 
 2 
 
 7.00 
 
 3 
 
 5.00 
 
 4 
 
 3.00 
 
 5 
 
 1.80 
 
 6 
 
 1.40 
 
 7 
 
 1.80 
 
 8 
 
 2.80 
 
 9 
 
 2.60 
 
 10 
 
 1.60 
 
 11 
 
 1.30 
 
 12 
 
 1.20 
 
 13 
 
 .85 
 
 14 
 
 1.35 
 
 15 
 
 2.20 
 
 16 
 
 3.30 
 
 17 
 
 2.05 
 
 18 
 
 1.40 
 
 19 
 
 2u95 
 
 20 
 
 4.00 
 
 21 
 
 3.60 
 
 22 
 
 4.00 
 
 23 
 
 7.00 
 
 24 
 
 6.00 
 
 25 
 
 4.50 
 
 26 
 
 5.00 
 
 27.. ,. 
 
 3.00 
 
 28 *... 
 
 2.05 
 
 29 
 
 1.90 
 
 30 
 
 1.00 
 
 31 
 
 1.00 
 
 
 
 Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
 charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
 rainfall at the camp near station No. 50. 
 
 Monthly discharge at station No. 87 at 2,700-foot level, near Kilo, Hawaii, for 1911-12. 
 
 Month. 
 
 1911. 
 November 14-30. . 
 December. 
 
 1912. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May — 
 
 discharge 
 in second- 
 feet. 
 
 4.72 
 3.56 
 
 .56 
 1.38 
 4.01 
 3.91 
 1.85 
 
 Run-off 
 (total in 
 acre-feet). 
 
 159 
 220 
 
 34.40 
 79.40 
 
 247 
 
 233 
 
 114 
 
 Month. 
 
 1912— Continued 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 discharge 
 in second- 
 feet. 
 
 1.47 
 2.79 
 2.15 
 2.57 
 3.91 
 4.42 
 2.97 
 
 2.66 
 
 Run-off 
 (total in 
 acre-feet). 
 
 87.5 
 172 
 132 
 153 
 240 
 263 
 180 
 
 1,940.0 
 
ISLAND OF HAWAII. 
 
 367 
 
 Monthly discharge at stations Nos. 1-18 and 25-87 at 2,700-foot level, near Hilo, 
 
 Hawaii, for 1912. 
 
 [Drainage area, about 75 square miles.] 
 
 Month 
 
 Discharge in 
 second-feet. 
 
 Mean. 
 
 Per 
 
 square 
 mile. 
 
 Run-off. 
 
 Depth in 
 
 inches 
 on drain- 
 
 Total in 
 acre-feet. 
 
 January 
 
 February 
 
 March 
 
 April 
 
 May 
 
 June 
 
 July 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 30.25 
 248.95 
 258. 81 
 435. 17 
 182. 20 
 
 61.72 
 146. 54 
 
 97.19 
 254.05 
 401. 44 
 474.07 
 385. 17 
 
 0.403 
 3.320 
 3.450 
 5.800 
 2.430 
 .823 
 1.950 
 1.300 
 3.390 
 5.350 
 6.320 
 5.140 
 
 0.46 
 3.58 
 3.98 
 6.47 
 2.80 
 .92 
 2.25 
 1.50 
 3.78 
 6.17 
 7.05 
 5.93 
 
 1,790 
 14,300 
 15,900 
 25,900 
 11,200 
 3,640 
 9,020 
 6,970 
 15,100 
 24,100 
 28,300 
 23,700 
 
 247. 15 
 
 3.300 
 
 44.89 
 
 179,000 
 
 Note.— The above table gives the combined discharge in second-feet and run-off in acre-feet for 
 the 81 stations at the 2,700-foot level above Hilo, Hawaii. 
 
 HAMAKUA GROUP OF STREAMS. 
 KAWAINUI RIVER, NEAR WAIPIO, HAWAII. 
 
 Location. — One hundred feet above intake of New Hamakua ditch and 6£ miles 
 
 southwest of Kukuihaele. 
 Records available.— July 20, 1911, to December 31, 1912. 
 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 5 p. m.; datum unchanged. 
 Channel. — Practically permanent. 
 Discharge measurements. — Made by wading at low water and from footbridge 10 
 
 feet below gage during high water. 
 Accuracy. — No discharge rating has yet been obtained. 
 Cooperation. — Station maintained in cooperation with Hawaiian Irrigation Co. 
 
 Daily gage height, in feet, of Kawainui River near Waipio, Hawaii, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 j 
 
 1.30 
 1.25 
 1.20 
 1.20 
 1.20 
 
 1.20 
 1.68 
 2.30 
 1.70 
 1.35 
 
 1.20 
 1.20 
 1.20 
 1.10 
 1.00 
 
 1.00 
 
 i.eo 
 
 1.00 
 1.00 
 1.00 
 
 0.80 
 .80 
 1.40 
 1.95 
 1.00 
 
 .85 
 .80 
 .80 
 .80 
 .80 
 
 .82 
 .80 
 1.45 
 .90 
 .80 
 
 .80 
 
 .80 
 
 .80 
 
 2.05 
 
 2.95 
 
 2.30 
 2.60 
 2.40 
 2.20 
 2.15 
 
 2.05 
 2.20 
 1.95 
 2.00 
 2.25 
 
 2.55 
 2.45 
 2.15 
 1.90 
 1.85 
 
 1.70 
 2.15 
 2.30 
 2.15 
 2.20 
 
 2.60 
 2.30 
 3.30 
 2.90 
 2.40 
 
 2.35 
 
 2.80 
 2.90 
 2.50 
 2.50 
 
 2.10 
 2.20 
 2.15 
 2.10 
 2.25 
 
 2.05 
 2.15 
 1.95 
 1.90 
 2.22 
 
 2.10 
 
 2.20 
 2.20 
 2.35 
 2.20 
 
 2.20 
 1.90 
 1.85 
 1.80 
 1.80 
 
 1.70 
 1.70 
 1.70 
 1.70 
 1.60 
 
 1.80 
 1.90 
 1.90 
 1.85 
 1.80 
 
 1.45 
 1.40 
 1.30 
 1.15 
 1.00 
 
 1.00 
 1.25 
 1.55 
 2.25 
 2.35 
 
 2.15 
 2.20 
 2.10 
 2.05 
 1.95 
 
 2.35 
 
 2.20 
 1.95 
 2.15 
 2.10 
 
 2.00 
 1.90 
 1.85 
 2.05 
 2.00 
 
 2.05 
 2.45 
 2.05 
 2.00 
 1.95 
 
 2.00 
 1.95 
 2.20 
 2.15 
 1.95 
 
 1.95 
 2.00 
 2.00 
 1.90 
 1.90 
 
 1.60 
 1.65 
 1.65 
 1.40 
 1.25 
 
 1.20 
 2.05 
 1.75 
 2.15 
 2.25 
 
 1.95 
 2.50 
 2.15 
 2.30 
 2.45 
 
 2.15 
 1.80 
 2.20 
 1.95 
 1.60 
 
 0.90 
 2.10 
 2.55 
 2.70 
 2.05 
 
 2.05 
 2.00 
 2.05 
 1.80 
 1.30 
 
 1.05 
 .90 
 .92 
 .90 
 
 1.90 
 
 .95 
 .85 
 .80 
 .80 
 .80 
 
 2.30 
 2.20 
 1.95 
 1.15 
 .95 
 
 .80 
 .80 
 .80 
 .80 
 .80 
 
 .80 
 .80 
 .80 
 .80 
 .80 
 
 .80 
 .80 
 .80 
 .80 
 .80 
 
 2.00 
 
 1.40 
 
 1.05 
 
 .95 
 
 .80 
 
 .80 
 
 .80 
 
 .80 
 
 2.40 
 
 3.60 
 
 2,10 
 2.40 
 2.40 
 1.95 
 1.80 
 
 3.20 
 3.15 
 2.90 
 2.55 
 2.00 
 
 3.65 
 
 2 
 
 2.05 
 
 3 
 
 1.90 
 
 4 
 
 1.70 
 
 5 
 
 1.50 
 
 6 
 
 1.40 
 
 7 
 
 1.35 
 
 8 
 
 1.95 
 
 9 
 
 2.00 
 
 10 
 
 2.05 
 
 11 
 
 1.60 
 
 12 
 
 1.30 
 
 13 
 
 1.20 
 
 14 
 
 1.00 
 
 15 
 
 1.00 
 
 16 
 
 1.00 
 
 17 
 
 .90 
 
 18 
 
 .95 
 
 19 
 
 1.20 
 
 20 
 
 1.45 
 
368 WATER RESOURCES OF HAWAII, 1912. 
 
 Daily gage height, in feet, of Kawainui River near Waipio, Hawaii, for 1912 — Continued. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 21 
 
 1.00 
 .95 
 .95 
 .95 
 .95 
 
 .90 
 
 .90 
 
 .90 
 
 .80 
 
 .80. 
 
 .80 
 
 4.05 
 2.30 
 1.70 
 1.80 
 1.85 
 
 1.70 
 1.40 
 2.80 
 2.35 
 
 2.15 
 1.95 
 2.25 
 2.00 
 2.25 
 
 2.35 
 2.10 
 1.85 
 1.80 
 3.85 
 3.70 
 
 2.00 
 2.05 
 1.95 
 2.45 
 2.15 
 
 2.30 
 2.35 
 2.00 
 1.95 
 1.90 
 
 1.80 
 1.70 
 1.65 
 1.90 
 1.65 
 
 2.00 
 2.15 
 2.00 
 2.10 
 1.85 
 1.75 
 
 2.00 
 1.90 
 2.20 
 2.15 
 1.95 
 
 2.15 
 2.00 
 1.85 
 2.00 
 2.05 
 
 1.90 
 1.95 
 2.05 
 2.25 
 2.00 
 
 1.95 
 1.90 
 1.80 
 1.75 
 1.70 
 1.70 
 
 1.40 
 
 1.15 
 
 1.00 
 
 .90 
 
 .90 
 
 1.45 
 
 1.95 
 
 1.20 
 
 .95 
 
 .90 
 
 .90 
 
 0.80 
 
 .80 
 .80 
 .80 
 .80 
 
 .80 
 .80 
 .80 
 .80 
 1.70 
 
 0.80 
 
 .95 
 
 2.30 
 
 2.35 
 
 .95 
 
 1.70 
 2.50 
 2.25 
 2.05 
 1.95 
 2.25 
 
 1.90 
 1.95 
 2.20 
 1.90 
 1.70 
 
 1.70 
 1.80 
 1.70 
 2.05 
 2.20 
 
 1.85 
 
 22. 
 
 1 70 
 
 23 
 
 2 10 
 
 24 
 
 2 00 
 
 25 
 
 1.90 
 
 26. 
 
 2 05 
 
 27 
 
 1.60 
 
 28 
 
 1.65 
 
 29 
 
 1.80 
 
 30 
 
 1.45 
 
 31 
 
 1.35 
 
 
 
 WAIPIO RIVER BELOW KOIAWE STREAM, NEAR WAIPIO, HAWAII. 
 
 Location. — About 50 feet below junction of Koiawe and Waipio Rivers, and about 
 
 5 miles southwest of Kukuihaele. 
 Records available. — July 20, 1911, to December 31, 1912. 
 Gage. — Vertical staff; datum unchanged. 
 Channel. — Probably slightly shifting. 
 Discharge measurements. — Made by wading at low water and from footbridge at 
 
 gage during high water. 
 Accuracy. — No discharge rating has yet been obtained. 
 Cooperation. — Station maintained in cooperation with the Hawaiian Irrigation Co. 
 
 Daily gage height, in feet, of Waipio River below Koiawe Stream, near Waipio, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.95 
 .90 
 .90 
 .90 
 .90 
 
 .90 
 1.40 
 2.60 
 1.05 
 
 .95 
 
 .90 
 .90 
 .90 
 .90 
 .85 
 
 .85 
 .85 
 .85 
 .85 
 .85 
 
 .85 
 .85 
 .85 
 .90 
 
 .85 
 
 .85 
 .85 
 .85 
 .85 
 .85 
 .85 
 
 0.85 
 
 .85 
 .90 
 .90 
 
 .85 
 
 .85 
 .85 
 .85 
 .85 
 
 .85 
 
 .85 
 
 .85 
 
 2.50 
 
 1.00 
 
 .95 
 
 .90 
 
 .90 
 
 .90 
 
 2.10 
 
 4.10 
 
 5.50 
 
 1.70 
 
 .95 
 
 .90 
 
 .90 
 
 .90 
 2.80 
 3.60 
 2.40 
 
 1.70 
 3.00 
 2.60 
 1.70 
 1.40 
 
 1.50 
 1.80 
 1.10 
 .90 
 1.70 
 
 2.50 
 3.50 
 2.80 
 1.50 
 1.10 
 
 .95 
 2.40 
 2.90 
 1.15 
 2.50 
 
 1.80 
 1.10 
 2.40 
 1.40 
 2.30 
 
 2.90 
 1.05 
 1.00 
 .95 
 4.50 
 4.00 
 
 2.25 
 
 2.30 
 4.20 
 5.10 
 2.30 
 
 2.80 
 4.10 
 4.20 
 3.40 
 3.90 
 
 2.40 
 2.40 
 2.50 
 1.90 
 2.50 
 
 1.30 
 2.30 
 1.25 
 1.05 
 2.40 
 
 1.90 
 1.35 
 1.25 
 2.70 
 1.40 
 
 3.60 
 2.40 
 1.35 
 1.25 
 1.20 
 
 1.10 
 2.30 
 1.60 
 3.20 
 1.90 
 
 2.00 
 1.20 
 2.40 
 1.50 
 1.20 
 
 1.00 
 .95 
 .95 
 .90 
 .90 
 
 .90 
 1.00 
 
 .95 
 1.25 
 1.35 
 
 2.10 
 1.00 
 .95 
 1.60 
 1.25 
 
 1.40 
 1.60 
 1.80 
 1.35 
 1.25 
 1.00 
 
 0.95 
 .95 
 .90 
 .90 
 .90 
 
 .88 
 
 .88 
 
 1.05 
 
 2.20 
 
 4 30 
 
 3.50 
 2.50 
 1.90 
 1.50 
 1.30 
 
 3.00 
 2.20 
 1.40 
 1.30 
 1.15 
 
 1.20 
 1.05 
 .95 
 1.90 
 1.05 
 
 2.60 
 1.60 
 1.20 
 1.00 
 1.30 
 
 0.90 
 
 .90 
 
 .88 
 
 1.60 
 
 2.20 
 
 2.60 
 
 3.80 
 
 1.40 
 
 1.80 
 
 .90 
 
 2.10 
 
 1.05 
 4.50 
 1.50 
 1.05 
 
 1.60 
 1.40 
 1.05 
 .95 
 .90 
 
 .90 
 
 .90 
 
 .90 
 
 2.80 
 
 1.10 
 
 1.00 
 .90 
 .90 
 
 .-90 
 .90 
 .90 
 
 0.90 
 .90 
 .90 
 .90 
 .90 
 
 .90 
 
 .90 
 
 1.45 
 
 2.70 
 
 5.00 
 
 1.30 
 1.00 
 1.05 
 .95 
 1.50 
 
 .92 
 
 .92 
 
 3.70 
 
 1.20 
 
 .95 
 
 .92 
 .90 
 
 .85 
 .82 
 .82 
 
 3.80 
 
 3.00 
 
 .95 
 
 .42 
 .90 
 .85 
 
 0.85 
 1.50 
 3.00 
 4.10 
 .95 
 
 .90 
 .95 
 .85 
 .90 
 .85 
 
 .85 
 .90 
 .90 
 .92 
 .90 
 
 1.20 
 .92 
 .90 
 
 .85 
 .90 
 
 .90 
 .85 
 .85 
 .85 
 
 .82 
 
 .85 
 .82 
 .82 
 .82 
 1.50 
 
 1.10 
 
 1.40 
 
 1.20 
 
 .95 
 
 .90 
 
 .90 
 
 .85 
 .82 
 .82 
 
 .82 
 
 .82 
 .82 
 .85 
 .82 
 .82 
 
 .82 
 .82 
 .82 
 .85 
 .82 
 
 .82 
 
 .82 
 
 2.20 
 
 2.70 
 
 1.20 
 
 1.60 
 2.70 
 1.30 
 1.40 
 1.20 
 3.50 
 
 1.10 
 
 1.00 
 
 .95 
 
 .92 
 
 .90 
 
 .90 
 
 .90 
 
 .90 
 
 5.50 
 
 4.50 
 
 1.60 
 6.00 
 2.50 
 1.30 
 .90 
 
 4.30 
 3.50 
 4.50 
 2.00 
 3.00 
 
 1.50 
 1.00 
 1.00 
 1.00 
 .95 
 
 .95 
 .92 
 .90 
 .90 
 1.10 
 
 3.60 
 
 2 
 
 1.40 
 
 3 
 
 1.00 
 
 4. 
 
 .95 
 
 5 
 
 .92 
 
 6 ". 
 
 .90 
 
 7 
 
 .90 
 
 8. . 
 
 1.20 
 
 9. . 
 
 1.15 
 
 10 
 
 1.05 
 
 11 
 
 1.00 
 
 12 
 
 .95 
 
 13... 
 
 .90 
 
 14 
 
 .90 
 
 15 
 
 .90 
 
 16 
 
 .90 
 
 17... 
 
 .90 
 
 18 
 
 .90 
 
 19 
 
 .90 
 
 20 
 
 .90 
 
 21 
 
 .90 
 
 22 
 
 .90 
 
 23 
 
 1.10 
 
 24 
 
 1.05 
 
 25 
 
 1.10 
 
 26 
 
 1.25 
 
 27 
 
 1.05 
 
 28 
 
 1.00 
 
 29 
 
 .95 
 
 30 
 
 .92 
 
 31 
 
 .92 
 
 
 
ISLAND OF HAWAII. 
 
 369 
 
 WAIPIO RIVER BELOW WAIMA STREAM, NEAR WAIPIO, HAWAII. 
 
 Location. — About 400 feet below junction of Waima Stream and Waipio River, and 
 
 about 4 miles southwest of Kukuihaele. 
 Records available. — July 20, 1911, to December 31, 1912. 
 Gage. — Vertical staff; read once daily, at 7 a. m.; datum unchanged. 
 Channel. — Probably slightly shifting. 
 Discharge measurements. — Made by wading at low water and from footbridge 100 
 
 feet above gage at high water. 
 Accuracy. — No discharge rating has yet been obtained. 
 Cooperation. — Station maintained in cooperation with the Hawaiian Irrigation Co. 
 
 Daily gage height, in feet, of Waipio River below Waima Stream, near Waipio, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 0.50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .75 
 1.25 
 .60 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 .50 
 .50 
 
 0.50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 .45 
 .45 
 
 .45 
 .45 
 1.30 
 .55 
 .45 
 
 .45 
 
 .45 
 
 .45 
 
 1.10 
 
 3.25 
 
 4.45 
 .90 
 .50 
 .50 
 .50 
 
 .50 
 1.55 
 2.55 
 1.60 
 
 0.85 
 
 1.60 
 
 1.30 
 
 .80 
 
 .70 
 
 .75 
 1.00 
 
 .70 
 .50 
 .85 
 
 1.30 
 
 1.90 
 
 1.25 
 
 ."80 
 
 .55 
 
 .50 
 1.25 
 1.50 
 
 .60 
 1.30 
 
 .95 
 .55 
 
 1.10 
 .75 
 
 1.15 
 
 1.55 
 
 .60 
 
 .50 
 
 .50 
 
 3.70 
 
 3.25 
 
 1.15 
 1.10 
 3.30 
 4.30 
 1.20 
 
 1.55 
 3.15 
 3.30 
 1.85 
 2.50 
 
 1.25 
 1.00 
 1.20 
 .70 
 1.20 
 
 .65 
 .90 
 .65 
 .60 
 1.25 
 
 .95 
 .70 
 .70 
 1.45 
 .70 
 
 2.30 
 
 1.30 
 
 .80 
 
 .60 
 
 .60 
 
 0.55 
 1.20 
 1.00 
 1.70 
 .90 
 
 1.00 
 
 .60 
 
 1.25 
 
 1.00 
 
 .62 
 
 .52 
 
 .50 
 .52 
 .50 
 .50 
 
 .50 
 .55 
 .50 
 .60 
 .70 
 
 1.15 
 .52 
 .50 
 
 .85 
 .60 
 
 .75 
 .92 
 .95 
 .70 
 .60 
 .50 
 
 0.50 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 
 .50 
 
 .62 
 
 1.10 
 
 3.40 
 
 2.20 
 
 1.30 
 
 .80 
 
 .75 
 
 .60 
 
 1.60 
 
 1.20 
 
 .60 
 
 .95 
 
 .60 
 
 .65 
 .50 
 .50 
 .90 
 .50 
 
 1.35 
 
 .65 
 .50 
 .50 
 .60 
 
 0.50 
 .50 
 .50 
 .78 
 
 1.25 
 
 1.35 
 
 2.40 
 
 .72 
 
 .85 
 
 .50 
 
 1.25 
 .85 
 
 3.55 
 .85 
 .52 
 
 .85 
 .75 
 .55 
 .50 
 .50 
 
 .50 
 .50 
 .50 
 1.30 
 .50 
 
 .50 
 .50 
 .50 
 .50 
 
 .48 
 .48 
 
 0.48 
 .50 
 .50 
 .50 
 .50 
 
 .50 
 
 .50 
 
 .50 
 
 1.35 
 
 1.05 
 
 .52 
 .80 
 .62 
 .55 
 .80 
 
 .50 
 .50 
 2.00 
 .70 
 .52 
 
 .50 
 .50 
 
 .48 
 .48 
 .48 
 
 2.00 
 
 1.75 
 
 .55 
 
 .50 
 
 .50 
 
 0.48 
 
 .70 
 
 1.60 
 
 2.90 
 
 .60 
 
 .50 
 
 1.00 
 
 .50 
 
 .50 
 
 .48 
 
 .48 
 .48 
 .48 
 .48 
 .48 
 
 .60 
 .50 
 .50 
 
 .48 
 .48 
 
 .48 
 .48 
 .48 
 .48 
 .48 
 
 .48 
 .48 
 .48 
 .48 
 .80 
 
 0.55 
 .80 
 .65 
 .50 
 .50 
 
 .48 
 .48 
 .48 
 .48 
 .48 
 
 .48 
 .48 
 .48 
 .50 
 .50 
 
 .50 
 .50 
 .48 
 .60 
 .50 
 
 .48 
 
 .48 
 
 1.10 
 
 1.45 
 
 .50 
 
 .85 
 1.45 
 .65 
 .75 
 .52 
 1.80 
 
 0.65 
 .50 
 .50 
 .50 
 .50 
 
 .48 
 
 .48 
 
 .48 
 
 4.10 
 
 3.00 
 
 1.20 
 
 4.70 
 
 1.40 
 
 .60 
 
 .50 
 
 2.80 
 2.00 
 2.90 
 1.35 
 .80 
 
 .75 
 .62 
 .70 
 .52 
 .50 
 
 .50 
 .50 
 .48 
 .58 
 .70 
 
 1.90 
 
 2... 
 
 1.20 
 
 3 
 
 .55 
 
 4. 
 
 .50 
 
 5 
 
 .50 
 
 6.. . 
 
 .50 
 
 7 
 
 .50 
 
 8 
 
 .70 
 
 9 
 
 .55 
 
 10 
 
 .70 
 
 11 
 
 .50 
 
 12 
 
 .50 
 
 13 
 
 .48 
 
 14 
 
 .48 
 
 15 
 
 .48 
 
 16 
 
 .48 
 
 17 
 
 .48 
 
 18 
 
 .48 
 
 19 
 
 .48 
 
 20 
 
 .48 
 
 21 
 
 .48 
 
 22 
 
 .50 
 
 23 
 
 1.10 
 
 24 
 
 .60 
 
 25 
 
 .55 
 
 26 
 
 .62 
 
 27 
 
 .50 
 
 28 
 
 .48 
 
 29 
 
 .50 
 
 30 
 
 .48 
 
 31 
 
 .48 
 
 
 
 
 
 NEW HAMAKUA DITCH AT WAIMA STREAM, NEAR WAIPIO, HAWAII. 
 
 Location. — In the Waima Branch of Waipio Gulch, and about 8 miles west of Kukui- 
 haele, Hawaii. Gage set in flume crossing Waima Stream. 
 Records available. — May 1 to December 31, 1912. 
 Gage. — Vertical staff; read twice daily, at 6 a. m. and 5 p. m. 
 Channel. — Smooth and regular (in ditch flume). 
 
 The following discharge measurement was made by C. H. Pierce: 
 February 6, 1912: Gage height, 35.5 inches; discharge, 56.2 second-feet. 
 14694°— wsp 336—14 24 
 
370 
 
 Daily gage height, in feet, of New Hamahua ditch at Waima Stream, near Waipio, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 4.30 
 
 4.11 
 
 4.19 
 
 3.78 
 
 3.70 
 
 4.52 
 
 4.14 
 
 4.30 
 
 4.02 
 
 4.16 
 
 3.94 
 
 4.28 
 
 4.55 
 
 3.81 
 
 4.30 
 
 3.96 
 
 4.10 
 
 4.20 
 
 5.30 
 
 4.30 
 
 3.71 
 
 4.30 
 
 3.91 
 
 4.16 
 
 3.90 
 
 5.20 
 
 3.94 
 
 3.69 
 
 4.30 
 
 3.86 
 
 4.30 
 
 3.80 
 
 4.81 
 
 3.75 
 
 3.80 
 
 4.30 
 
 3.85 
 
 4.30 
 
 3.78 
 
 4.38 
 
 3.65 
 
 3.75 
 
 4.30 
 
 3.95 
 
 4.41 
 
 4.16 
 
 4.68 
 
 3.61 
 
 3.65 
 
 4.30 
 
 4.30 
 
 4.58 
 
 4.10 
 
 4.30 
 
 3.60 
 
 3.86 
 
 4.30 
 
 4.30 
 
 4.70 
 
 4.75 
 
 4.34 
 
 3.59 
 
 4.15 
 
 4.30 
 
 4.20 
 
 4.39 
 
 4.85 
 
 4.00 
 
 3.58 
 
 4.20 
 
 4.28 
 
 4.20 
 
 4.45 
 
 4.28 
 
 3.88 
 
 3.58 
 
 4.20 
 
 4.25 
 
 4.20 
 
 4.65 
 
 4.71 
 
 3.82 
 
 3.59 
 
 4.20 
 
 4.30 
 
 4.20 
 
 4.55 
 
 5.00 
 
 3.80 
 
 3.66 
 
 4.20 
 
 4.25 
 
 4.20 
 
 4.70 
 
 4.72 
 
 3.95 
 
 4.76 
 
 4.20 
 
 4.19 
 
 4.20 
 
 4.40 
 
 5.06 
 
 3.94 
 
 3.89 
 
 4.10 
 
 4.21 
 
 4.20 
 
 4.45 
 
 4.32 
 
 4.59 
 
 3.69 
 
 4.20 
 
 4.28 
 
 4.20 
 
 4.50 
 
 4.20 
 
 4.15 
 
 3.69 
 
 4.20 
 
 4.26 
 
 4.20 
 
 4.48 
 
 4.60 
 
 3.85 
 
 3.75 
 
 4.20 
 
 4.30 
 
 4.20 
 
 4.15 
 
 4.65 
 
 3.79 
 
 4.61 
 
 4.20 
 
 4.30 
 
 4.20 
 
 4.02 
 
 4.05 
 
 4.06 
 
 3.72 
 
 4.20 
 
 4.30 
 
 4.20 
 
 3.98 
 
 3.92 
 
 4.48 
 
 3.62 
 
 4.20 
 
 4.24 
 
 4.16 
 
 4.28 
 
 2.82 
 
 3.94 
 
 3.75 
 
 4.20 
 
 4.12 
 
 4.10 
 
 4.30 
 
 3.78 
 
 3.78 
 
 5.20 
 
 4.20 
 
 4.24 
 
 4.20 
 
 4.50 
 
 3.72 
 
 3.71 
 
 5.30 
 
 4.16 
 
 4.28 
 
 4.21 
 
 4.16 
 
 3.70 
 
 3.66 
 
 4.10 
 
 4.12 
 
 4.22 
 
 4.20 
 
 4.10 
 
 4.40 
 
 3.65 
 
 4.60 
 
 4.06 
 
 4.30 
 
 4.30 
 
 4.05 
 
 4.48 
 
 3.68 
 
 5.30 
 
 4.14 
 
 4.30 
 
 4.21 
 
 3.94 
 
 4.58 
 
 3.62 
 
 4.20 
 
 4.01 
 
 4.26 
 
 4.15 
 
 3.91 
 
 3.96 
 
 3.60 
 
 4.20 
 
 4.18 
 
 4.30 
 
 4.26 
 
 3.82 
 
 3.80 
 
 4.25 
 
 4.20 
 
 4.10 
 
 4.22 
 
 
 3.79 
 
 
 
 4.20 
 
 3.95 
 
 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 4.20 
 3.65 
 4.09 
 4.00 
 3.92 
 
 3.85 
 4.18 
 4.20 
 4.15 
 4.18 
 
 3.79 
 3.75 
 
 3.72 
 
 3.66 
 3.72 
 3.69 
 4.08 
 
 3.78 
 4.00 
 4.20 
 4.20 
 4.04 
 
 4.20 
 3.98 
 3.88 
 4.10 
 3.99 
 3.95 
 
 NEW HAMAKTJA DITCH AT MAIN WEIR, NEAR KTJKTTIHAELE, HAWAII. 
 
 Location. — Near head of ditch about 500 feet south of office of Hawaiian Irrigation 
 
 Co. (Ltd.), at Kukuihaele. This ditch diverts all run-off from the headwaters of 
 
 the Wapio Basin below the upper Hamakua ditch. 
 Records available.— July 18, 1910, to December 31, 1912. , 
 
 Gage. — Automatic clock register; datum unchanged. 
 Discharge. — Measured by weir consisting of six 5-foot panels, sharp crested, and 
 
 with a good stilling basin above. Discharge measurements made in ditch below 
 
 weir have checked weir discharge to within 2 per cent. 
 Cooperation. — The records for this weir have been furnished the Geological Survey 
 
 by the Hawaiian Irrigation Co. (Ltd.). 
 
 Daily discharge, in million gallons, of New Hamahua ditch at main weir, near Kukuihaele , 
 
 Hawaii, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 35.6 
 34.6 
 33.9 
 33.3 
 32.9 
 
 32.4 
 34.3 
 37.6 
 37.6 
 35.0 
 
 29.6 
 29.3 
 30.0 
 35.3 
 32.1 
 
 30.9 
 30.5 
 30.0 
 29.9 
 29.6 
 
 38.6 
 38.8 
 38.7 
 38.6 
 38.6 
 
 38.8 
 38.6 
 38.6 
 38.8 
 38.8 
 
 38.8 
 38.7 
 38.9 
 39.0 
 38.9 
 
 39.1 
 39.0 
 39.0 
 38.9 
 38.3 
 
 38.7 
 38.7 
 38.9 
 39.0 
 38.7 
 
 38.8 
 36.2 
 36.6 
 36.3 
 36.3 
 
 36.2 
 36.2 
 35.7 
 35.0 
 34.5 
 
 34.2 
 34.8 
 35.4 
 35.2 
 35.2 
 
 37.0 
 36.8 
 35.7 
 35.3 
 37.8 
 
 ' 37.8 
 37.7 
 42.2 
 42.9 
 40.8 
 
 31.0 
 32.5 
 34.9 
 31.7 
 30.4 
 
 30.0 
 33.6 
 39.3 
 42.0 
 44.5 
 
 81.1 
 
 39.3 
 47.3 
 48.9 
 45.8 
 
 41.8 
 44.5 
 41.6 
 41.1 
 36.1 
 
 41.6 
 40.4 
 39.2 
 34.4 
 31.5 
 
 30.1 
 29.5 
 29.1 
 29.0 
 29.0 
 
 34.5 
 33.0 
 31.3 
 31.3 
 32.1 
 
 31.7 
 30.7 
 32.3 
 35.1 
 34.8 
 
 33.9 
 
 2 
 
 35.4 
 
 3 
 
 34.2 
 
 4 
 
 34.0 
 
 5 
 
 34.2 
 
 6 
 
 34.2 
 
 7 
 
 34.6 
 
 8 
 
 34.2 
 
 9 
 
 34.6 
 
 10 
 
 34.5 
 
ISLAND OF HAWAII. 
 
 371 
 
 Daily discharge, in million gallons, of New Hamakua ditch at main weir, near Kukuihaele, 
 Hawaii, for 1912 — Continued . 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 11 
 
 33.3 
 32.6 
 32.2 
 32.0 
 31.8 
 
 31.4 
 31.1 
 31.0 
 30.8 
 30.6 
 
 30.5 
 30.5 
 30.3 
 31.0 
 30.7 
 
 30.2 
 30.0 
 29.9 
 29.8 
 29.6 
 29.7 
 
 29.8 
 30.1 
 36.5 
 35.5 
 31.6 
 
 30.5 
 
 30.2 
 29. a 
 35.4 
 38.3 
 
 37.9 
 37.8 
 38.3 
 38.6 
 38.9 
 
 38.6 
 38.8 
 38.4 
 38.4 
 
 38.9 
 
 38.7 
 38.8 
 38.7 
 38.7 
 
 37.8 
 37.8 
 37.9 
 37.9 
 37.9 
 
 38.2 
 38.0 
 38.2 
 38.4 
 38.6 
 
 38.5 
 38.7 
 38.6 
 37.4 
 39.1 
 39.3 
 
 38.8 
 38.5 
 38.5 
 38.8 
 38.8 
 
 38.7 
 38.9 
 41.9 
 38.6 
 38.8 
 
 38.7 
 38.5 
 38.7 
 38.9 
 39.0 
 
 38.9 
 
 38.9 
 38.6 
 38.8 
 38.8 
 
 36.4 
 36.4 
 36.2 
 36.3 
 36.2 
 
 36.5 
 36.5 
 36.3 
 36.2 
 36.1 
 
 36.2 
 36.1 
 36.1 
 36.3 
 36.1 
 
 36.4 
 36.6 
 36.6 
 36.3 
 36.2 
 36.4 
 
 35.3 
 35.5 
 34:0 
 34.8 
 35.1 
 
 34.8 
 35.8 
 34.8 
 35.0 
 35.2 
 
 34.8 
 34.8 
 34.8 
 35.4 
 36.4 
 
 36.1 
 36.9 
 36.7 
 36.0 
 37.5 
 
 39.9 
 
 42.2 
 41.6 
 41.9 
 40.8 
 
 38.4 
 38.4 
 39.0 
 36.5 
 34.8 
 
 34.1 
 36.8 
 37.8 
 41.2 
 37.2 
 
 36.1 
 35.4 
 33.8 
 33.2 
 32.0 
 31.1 
 
 38.5 
 43.0 
 45.6 
 43.8 
 46.6 
 
 39.0 
 36.8 
 39.4 
 43.4 
 35.9 
 
 34.0 
 32.2 
 31.1 
 30.2 
 30.5 
 
 36.5 
 
 40.9 
 43.6 
 34.3 
 33.2 
 32.5 
 
 35.1 
 34.0 
 33.0 
 33.8 
 34.6 
 
 32.5 
 37.2 
 33.4 
 32.3 
 34.8 
 
 36.9 
 34.2 
 31.7 
 31.1 
 29.9 
 
 29.9 
 29.9 
 29.5 
 29.3 
 34.6 
 
 28.8 
 29.5 
 29.5 
 36.3 
 33.0 
 
 30.1 
 29.5 
 30.1 
 38.7 
 31.1 
 
 29.5 
 32.0 
 49.1 
 50.7 
 37.4 
 
 39.8 
 50.6 
 34.9 
 35.3 
 35.1 
 34.9 
 
 34.8 
 34.8 
 34.8 
 34.8 
 34.4 
 
 34.2 
 34.2 
 33.8 
 33.8 
 33.6 
 
 34.2 
 34.0 
 33.8 
 34.2 
 34.2 
 
 34.2 
 33.6 
 33.8 
 34.2 
 34.2 
 
 33.8 
 
 12 
 
 32.5 
 
 13 
 
 32.3 
 
 14 
 
 32.3 
 
 15 
 
 32.3 
 
 16 
 
 31.7 
 
 17 
 
 30.1 
 
 18 
 
 31.7 
 
 19 
 
 31.7 
 
 20 
 
 34.0 
 
 21 
 
 31.7 
 
 22 
 
 34.2 
 
 23 
 
 34.5 
 
 24 
 
 34.9 
 
 25 
 
 34.9 
 
 26 
 
 34.9 
 
 27 
 
 34.2 
 
 28-. 
 
 33.0 
 
 29 
 
 34.5 
 
 30 
 
 34.2 
 
 31 
 
 34.2 
 
 
 
 Note. — The weir record includes the total flow of the ditch exclusive of water sent over the wasteway 
 a few hundred feet above when it is not needed. 
 
 Monthly discharge of New Hamakua ditch at main weir, near Kukuihaele, Hawaii, for 1912. 
 
 Month. 
 
 January. 
 February 
 March... 
 
 April 
 
 May 
 
 June 
 
 July 
 
 Mean 
 
 Run-off 
 
 discharge 
 
 (total in 
 
 in million 
 
 million 
 
 gallons. 
 
 gallons). 
 
 32.1 
 
 996 
 
 33.8 
 
 981 
 
 38.5 
 
 1,190 
 
 38.9 
 
 1,170 
 
 36.8 
 
 1,140 
 
 35.4 
 
 1,060 
 
 37.6 
 
 1,170 
 
 Month. 
 
 August 
 
 September 
 
 October 
 
 November 
 
 December 
 
 The year 
 
 Mean 
 
 discharge 
 
 in million 
 
 gallons. 
 
 36.8 
 35.8 
 34.8 
 33.7 
 33.6 
 
 35.7 
 
 Run-off 
 (total in 
 million 
 gallons). 
 
 1,140 
 1,080 
 1,080 
 1,010 
 1,040 
 
 13, 100 
 
 KOHALA GROUP OF STREAMS. 
 KOHALA DITCH NEAR KOHALA, HAWAII. 
 
 Location. — The Kohala Ditch Co. maintains three weirs, which measure the dis- 
 charge carried by Kohala ditch. This ditch picks up and delivers to the planta- 
 tions on the north coast of Hawaii all the run-off at low and medium stages between 
 the Honokane Gulch and the northwest point of the island below the 2,000-foot 
 contour. The Kehena ditch collects most of the water above the 2,000-foot contour. 
 
 The Awini weir is in the east branch of Honokanenui Gulch at an elevation of 
 1,880 feet, and is on the southeast side of the gulch. 
 
 The Niulii weir is about 3£ miles south of Niulii, Kohala District, at an eleva- 
 tion of 1,000 feet, and is about 5 miles below the Awini weir. 
 
 The Hawi weir is about 1| miles south of the Hawi Mill near the lower end of 
 the ditch. 
 Records available. — Daily records of the flow of the Kohala ditch at the Awini and 
 Niulii weirs have been kept by the Kohala Ditch Co. since July 1, 1907. No 
 daily record has been kept of the flow at the Hawi weir, which is used mainly as 
 a check on deliveries of water between Niulii and Hawi. The Niulii weir meas- 
 ures the amount of water shown by the Awini weir, and also the inflow from the 
 Honokanenui. The record for the Honokanenui is arrived at by subtracting the 
 flow at the Awini weir from the flow at the Niulii weir. 
 
372 
 
 WATER RESOURCES OF HAWAII, 1912. 
 
 Gages. — Vertical staffs graduated to hundredths and set in at the weirs. 
 Discharge measurements. — Each weir consists of three 5-foot panels with end 
 contractions, sharp-beveled steel crest, and very slight velocity of approach. 
 
 Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 
 
 for 1907. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2 
 
 7.90 
 4.77 
 15.70 
 4.39 
 4.03 
 
 4.03 
 
 9.29 
 
 2.99 
 
 .89 
 
 .17 
 
 10.50 
 6.59 
 4.03 
 20.70 
 19.50 
 
 12.50 
 19.50 
 18.30 
 20.70 
 20.70 
 
 20.70 
 18.90 
 14.60 
 20.70 
 20.70 
 
 5.16 
 4.77 
 3.32 
 5.16 
 2.99 
 
 4.39 
 10.50 
 4.03 
 2.99 
 7.02 
 
 5.76 
 9.76 
 10.50 
 3.32 
 7.46 
 
 16.90 
 15.70 
 12.50 
 12.00 
 21.90 
 
 21.90 
 21.90 
 20.70 
 16.90 
 20.10 
 
 18.90 
 14.10 
 9.76 
 11.50 
 18.30 
 
 19.50 
 16.30 
 21.90 
 21.90 
 19.50 
 
 16.90 
 12.50 
 10.50 
 21.90 
 16.90 
 
 11.50 
 11.50 
 10.50 
 9.29 
 13.00 
 
 10.50 
 9.29 
 8.36 
 8.36 
 7.90 
 
 12.50 
 10.50 
 9.29 
 8.36 
 6.59 
 
 6.59 
 5.16 
 11.50 
 16.90 
 12.50 
 
 16 
 
 17 
 
 0.89 
 
 21.90 
 15.20 
 10.50 
 12.50 
 12.50 
 
 16.30 
 14.60 
 9.29 
 4.39 
 7.46 
 
 21.90 
 20.70 
 20.70 
 18.90 
 11.50 
 7.46 
 
 8.82 
 4.77 
 5.76 
 3.67 
 12.00 
 
 10.50 
 21.90 
 21.90 
 20.70 
 16.90 
 
 13.00 
 20.70 
 20.70 
 17.40 
 13.60 
 
 11.50 
 21.90 
 21.90 
 21.90 
 21.90 
 
 21.90 
 21.90 
 20.70 
 16.90 
 11.00 
 
 9.76 
 16.30 
 21.90 
 17.40 
 15.70 
 18.90 
 
 11.50 
 10.50 
 9.29 
 8.82 
 12.50 
 
 12.00 
 14.60 
 20.10 
 20.70 
 15.20 
 
 14.60 
 16.90 
 21.90 
 15.20 
 12.00 
 
 
 3 
 
 4 
 
 5 
 
 6 
 
 7 
 
 8 
 
 9 
 
 10 
 
 11 
 
 18 
 
 19..... 
 20..... 
 
 21 
 
 22 
 
 23 
 
 24 
 
 25 
 
 26 
 
 27 
 
 28 
 
 29 
 
 30 
 
 31 
 
 2.66 
 20.70 
 11.00 
 
 20.70 
 20.70 
 18.90 
 16.90 
 10.50 
 
 6.59 
 8.36 
 19.50 
 15.70 
 11.00 
 4.77 
 
 
 12 
 
 
 12.50 
 
 13 
 
 14 
 
 15 
 
 13.60 
 14.10 
 4.77 
 
 16.90 
 21.90 
 21.90 
 21.90 
 
 Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 
 
 for 1908. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 20.70 
 20.70 
 20.70 
 15.70 
 13.00 
 
 11.50 
 
 10.50 
 8.82 
 7.90 
 7.02 
 
 6.59 
 6.17 
 5.76 
 5.76 
 21.90 
 
 20.70 
 15.70 
 12.50 
 12.50 
 15.70 
 
 12.50 
 9.76 
 7.46 
 6.59 
 6.17 
 
 5.76 
 7.46 
 7.02 
 12.50 
 20.70 
 21.90 
 
 16.90 
 16.90 
 20.70 
 18.30 
 20.70 
 
 20.70 
 20.70 
 20.70 
 20.70 
 15.70 
 
 12.50 
 9.29 
 8.82 
 8.36 
 
 11.50 
 
 10.50 
 11.50 
 10.50 
 9.29 
 8.82 
 
 8.82 
 7.46 
 6.59 
 5.16 
 
 4.77 
 
 4.03 
 4.03 
 3.67 
 3.67 
 
 2.99 
 4.77 
 4.03 
 4.03 
 3.67 
 
 7.46 
 16.90 
 12.50 
 7.46 
 5.76 
 
 4.77 
 4.03 
 3.32 
 3.32 
 3.32 
 
 7.46 
 11.00 
 6.59 
 6.59 
 5.76 
 
 4.77 
 4.77 
 3.67 
 3.67 
 3.32 
 
 3.32 
 
 2.66 
 2.66 
 2.05 
 2.05 
 2.05 
 
 5.76 
 12.50 
 18.30 
 18.30 
 14.60 
 
 11.50 
 7.46 
 10.50 
 15.20 
 15.70 
 
 16.90 
 18.30 
 20.70 
 20.70 
 20.70 
 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 18.30 
 16.90 
 14.60 
 11.50 
 
 10.50 
 7.46 
 6.59 
 6.59 
 5.76 
 
 5.76 
 8.36 
 9.29 
 19.50 
 18.30 
 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 18.30 
 14.60 
 13.60 
 12.50 
 
 11.50 
 15.70 
 15.70 
 16.90 
 15.70 
 
 14.60 
 13.60 
 16.90 
 15.70 
 18.30 
 
 18.30 
 18.30 
 16.90 
 16.90 
 15.70 
 14.60 
 
 12.50 
 10.50 
 9.29 
 11.50 
 13.60 
 
 15.70 
 14.60 
 13.60 
 16.90 
 15.70 
 
 15.70 
 18.30 
 18.30 
 20.70 
 20. 70 
 
 20.70 
 19.50 
 18.30 
 20.70 
 20.70 
 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 19.50 
 18.30 
 16.90 
 14.60 
 15.70 
 
 18.30 
 20.70 
 20.70 
 20.70 
 20.70 
 
 19.50 
 19.50 
 15.70 
 16.90 
 20.70 
 
 19.50 
 18.30 
 16.90 
 20.70 
 19.50 
 
 18.30 
 16.90 
 18.30 
 20.70 
 19.50 
 
 18.30 
 18.30 
 15.70 
 15.70 
 20.70 
 
 20.70 
 20. 70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 20.70 
 19.50 
 18.30 
 18.30 
 
 20.70 
 20.70 
 20.70 
 19.50 
 18.30 
 
 18. 30 
 16.90 
 18.30 
 20.70 
 20.70 
 
 20.70 
 19.50 
 18.30 
 16.90 
 15.70 
 
 13.60 
 12.50 
 13.60 
 18.30 
 20.70 
 
 20.70 
 20.70 
 19.50 
 18.30 
 20.70 
 20.70 
 
 20.70 
 20.70 
 19.50 
 18.30 
 16.90 
 
 15.70 
 14.10 
 13.60 
 13.00 
 15.70 
 
 20.70 
 20.70 
 19.50 
 18.30 
 18.30 
 
 19.50 
 18.30 
 20.70 
 20.70 
 20.70 
 
 20.70 
 19.50 
 18.30 
 16.90 
 15.70 
 
 15.70 
 14.60 
 16.10 
 15.70 
 14.60 
 
 13.60 
 12.50 
 11.50 
 9.29 
 8.36 
 
 13.60 
 15.70 
 14.60 
 13.60 
 12.50 
 
 11.00 
 9.29 
 7.46 
 7.46 
 
 20.70 
 
 20.70 
 19.50 
 20.70 
 18.30 
 15.70 
 
 20. 70 
 19.50 
 18.30 
 16.90 
 15.70 
 
 14.60 
 13.60 
 12.00 
 11.50 
 10.50 
 7.46 
 
 6.59 
 6.17 
 5.76 
 4.77 
 5.16 
 
 20.70 
 19.50 
 19.50 
 15.70 
 13.60 
 
 10.50 
 9.76 
 8.82 
 7.46 
 5.16 
 
 5.16 
 
 4.77 
 5.76 
 9.29 
 19.50 
 
 13.60 
 11.00 
 8.82 
 8.36 
 15.20 
 
 16.90 
 20.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 
 2 
 
 20.70 
 
 3 
 
 20.70 
 
 4 
 
 19.50 
 
 5 
 
 18.30 
 
 6 
 
 20.70 
 
 7 
 
 20.70 
 
 8 
 
 20.70 
 
 9 
 
 20.70 
 
 10 
 
 20.70 
 
 11 
 
 19.50 
 
 12 
 
 18.30 
 
 13 
 
 15.70 
 
 14 
 
 14.60 
 
 15 
 
 14.10 
 
 16. 
 
 13.60 
 
 17 
 
 20.70 
 
 is. . : 
 
 20.70 
 
 19 
 
 20.70 
 
 20 
 
 20.70 
 
 21 
 
 20.70 
 
 22 
 
 19.50 
 
 23 
 
 18.30 
 
 24 
 
 16.90 
 
 25 
 
 20.70 
 
 26 
 
 20.70 
 
 27 
 
 19.50 
 
 28 
 
 18.30 
 
 29 
 
 16.90 
 
 30 
 
 15.70 
 
 31 
 
 14.60 
 
 
 
ISLAND OF HAWAII. 
 
 373 
 
 Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 
 
 for 1909. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 14.10 
 14.10 
 13.60 
 13.60 
 13.60 
 
 12.50 
 11.50 
 10.50 
 9.29 
 8.36 
 
 7.46 
 6.59 
 5.76 
 4.77 
 4.03 
 
 3.67 
 3.32 
 2.99 
 2.99 
 2.99 
 
 2.99 
 
 2.99 
 
 20.70 
 
 20.70 
 
 20.70 
 
 20.70 
 20.70 
 20.70 
 19.50 
 19.50 
 20.70 
 
 20.70 
 19.50 
 18.30 
 16.90 
 15.70 
 
 20.70 
 19.50 
 18.30 
 15.70 
 14.60 
 
 13.60 
 
 20.70 
 19.50 
 18.30 
 16.90 
 
 15.70 
 20.70 
 20.70 
 19.50 
 18.30 
 
 18.30 
 20.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 20.70 
 20.70 
 
 20.7 
 28.7 
 20.7 
 20.7 
 20.7 
 
 20.7 
 20.7 
 19.5 
 18.3 
 18.3 
 
 20.7 
 20.7 
 19.5 
 18.3 
 18.3 
 
 20.7 
 20.7 
 20.7 
 20.7 
 20.7 
 
 20.7 
 20.7 
 20.7 
 20.7 
 20.7 
 
 20.7 
 20.7 
 20.7 
 19.5 
 18.3 
 16.9 
 
 16.30 
 15.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 20.70 
 19.50 
 18.90 
 18.30 
 
 16.90 
 16.30 
 16.30 
 15.70 
 15.20 
 
 14.60 
 14.10 
 13.60 
 13.10 
 12.00 
 
 11.00 
 9.76 
 
 8.82 
 8.36 
 7.90 
 
 7.46 
 6.59 
 6.17 
 5.76 
 5.76 
 
 4.77 
 4.39 
 4.03 
 16.90 
 20.70 
 
 20.70 
 19.50 
 18.30 
 16.90 
 16.90 
 
 15.70 
 14.60 
 14.10 
 20.70 
 19.50 
 
 18.30 
 16.90 
 15.70 
 14.60 
 14.60 
 
 14.10 
 
 13.60 
 12.50 
 10.50 
 8.36 
 
 20.70 
 20.70 
 20.70 
 20.70 
 19.50 
 18.30 
 
 13.60 
 11.50 
 9.29 
 8.36 
 7.46 
 
 6.59 
 
 15.70 
 14.60 
 13.60 
 11.50 
 
 9.29 
 
 8-36 
 
 7.46 
 
 20.70 
 
 18.30 
 
 16.90 
 15.70 
 14.60 
 12.50 
 10.50 
 
 8.36 
 6.59 
 5.76 
 14.10 
 12.50 
 
 10.50 
 9.76 
 8.82 
 7.02 
 8.36 
 
 16.30 
 13.60 
 12.00 
 8.82 
 5.76 
 
 4.77 
 
 9.29 
 
 20.70 
 
 19.50 
 
 16.90 
 
 15.70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 20.70 
 20.70 
 18.30 
 20.70 
 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 19.50 
 18.30 
 15.70 
 14.60 
 13.60 
 
 12.50 
 11.50 
 12.50 
 11.50 
 10.40 
 
 9.76 
 9.29 
 8.82 
 8.36 
 8.36 
 
 7.90 
 7.90 
 7.46 
 7.02 
 6.59 
 
 5.76 
 5.16 
 4.39 
 5.76 
 7.02 
 
 6.59 
 5.16 
 8.36 
 12.50 
 11.00 
 7.46 
 
 5.16 
 5.16 
 4.03 
 3.66 
 2.99 
 
 2.99 
 2.35 
 2.35 
 2.35 
 2.05 
 
 2.05 
 4.39 
 8.82 
 19.50 
 13.60 
 
 8.82 
 
 6.17 
 
 14.60 
 
 20.70 
 
 14.10 
 
 10.50 
 6.17 
 8.82 
 15.70 
 15.70 
 
 14.60 
 21.90 
 14.60 
 13.60 
 12.00 
 
 8.82 
 10.90 
 13.60 
 11.50 
 11.00 
 
 10.50 
 9.29 
 7.46 
 6.59 
 4.03 
 
 3.32 
 
 6.59 
 10.50 
 9.29 
 6.17 
 
 5.16 
 4.77 
 3.32 
 3.32 
 3.32 
 
 2.66 
 7.46 
 14.60 
 14.10 
 11.00 
 
 7.46 
 4.77 
 4.03 
 4.03 
 3.67 
 5.76 
 
 7.02 
 4.77 
 8.36 
 8.36 
 8.36 
 
 7.46 
 5.16 
 7.46 
 9.76 
 9.76 
 
 9.29 
 
 8.36 
 
 12 00 
 
 12.00 
 
 9,76 
 
 8.36 
 
 7.02 
 5.16 
 5.16 
 
 4.77 
 
 4.03 
 3.32 
 3.32 
 2.66 
 2.66 
 
 9.26 
 
 7.46 
 4.77 
 3.32 
 2.66 
 
 3.32 
 
 2 
 
 2.99 
 
 3.... 
 
 2.66 
 
 4 
 
 2.66 
 
 
 2.05 
 
 6 
 
 2.05 
 
 7 
 
 1.77 
 
 8 
 
 1.50 
 
 9 
 
 1.50 
 
 10 
 
 1.50 
 
 11 
 
 1.50 
 
 12 
 
 1.50 
 
 13 
 
 1.50 
 
 
 1.50 
 
 15 
 
 1.24 
 
 16 
 
 1.24 
 
 17 
 
 3.32 
 
 18 
 
 20.70 
 
 
 20.70 
 
 20 
 
 20.70 
 
 21 
 
 20.70 
 
 22 
 
 20.70 
 
 23 
 
 20.70 
 
 
 15.20 
 
 25 
 
 11.50 
 
 26 
 
 20.70 
 
 27 
 
 15.20 
 
 28 : 
 
 12.50 
 
 
 12.00 
 
 30 
 
 9.76 
 
 
 8.36 
 
 
 
 Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 
 
 for 1910. 
 
 Day. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 
 
 6.59 
 6.17 
 6.17 
 6.17 
 7.90 
 
 15.70 
 11.50 
 9.29 
 8.82 
 11.50 
 
 12.50 
 13.60 
 19.50 
 19.50 
 18.30 
 
 17.40 
 18.30 
 20.70 
 19.50 
 18.30 
 
 18.30 
 18.30 
 18.30 
 18.30 
 18.30 
 
 18.30 
 18.30 
 18.30 
 18.30 
 18.30 
 18.30 
 
 18.30 
 19.50 
 18.30 
 16.90 
 15.20 
 
 14.60 
 13.60 
 13.60 
 12.50 
 12.00 
 
 11.50 
 12.50 
 15.70 
 13.60 
 12.50 
 
 11.50 
 11.50 
 11.00 
 10.50 
 9.29 
 
 10.50 
 15.70 
 15.70 
 13.00 
 11.50 
 
 9.76 
 8.36 
 7.90 
 
 8.36 
 15.20 
 16.90 
 16.30 
 16.30 
 
 13.60 
 12.50 
 12.50 
 11.50 
 9.29 
 
 7.46 
 6.59 
 6.17 
 5.76 
 
 4.77 
 
 4.03 
 3.67 
 3.32 
 3.32 
 16.90 
 
 18.30 
 18.30 
 16.90 
 15.70 
 16.90 
 
 18.30 
 16.90 
 14.60 
 14.60 
 16.90 
 20.70 
 
 19.50 
 17.40 
 16.90 
 13.60 
 12.50 
 
 16.30 
 14.60 
 16.90 
 16.30 
 14.60 
 
 13.60 
 12.50 
 10.50 
 9.29 
 9.29 
 
 14.60 
 20.70 
 20.70 
 20.70 
 19.50 
 
 16.30 
 13.60 
 10.50 
 12.50 
 10.50 
 
 8.36 
 
 7.02 
 7.46 
 8.36 
 8.36 
 
 20.70 
 19.50 
 18.90 
 18.30 
 19.50 
 
 18.90 
 20.70 
 20.70 
 19.50 
 19.50 
 
 18.90 
 18.30 
 16.90 
 15.70 
 14.60 
 
 19.50 
 18.90 
 16.90 
 18.30 
 16.90 
 
 14.60 
 11.50 
 8.36 
 6.59 
 5.52 
 
 4.77 
 4.39 
 4.03 
 4.03 
 4.03 
 9.76 
 
 18.30 
 17.40 
 16.30 
 14.60 
 18.90 
 
 18.30 
 17.40 
 19.50 
 19.50 
 18.30 
 
 16.30 
 15.70 
 20.70 
 19.50 
 20.70 
 
 20.70 
 20.70 
 20.70 
 20.70 
 18.30 
 
 16.90 
 18.30 
 19.50 
 18.30 
 16.30 
 
 15.20 
 
 14.60 
 14.60 
 14.60 
 14.10 
 
 14.10 
 14.60 
 14.60 
 20.70 
 20.70 
 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 20.70 
 19.50 
 19.50 
 20.70 
 
 20.70 
 19.50 
 16.90 
 15.70 
 15.20 
 
 14.60 
 14.10 
 12.50 
 12.50 
 20.70 
 
 20.70 
 19.50 
 16.90 
 15.70 
 15.70 
 15.20 
 
 15.70 
 15.70 
 20.70 
 19.50 
 19.50 
 
 17.40 
 20.70 
 20.70 
 19.50 
 19.50 
 
 18.90 
 18.90 
 20.70 
 20.70 
 19.50 
 
 16.30 
 
 12.50 
 
 8.36 
 
 7.90 
 
 20.70 
 
 20.70 
 20.70 
 20.70 
 19.50 
 17.40 
 
 16.30 
 15.20 
 13.60 
 12.50 
 11.50 
 10.50 
 
 8.36 
 7.46 
 6.17 
 5.76 
 4.39 
 
 3.67 
 2.99 
 2.66 
 2.35 
 2.05 
 
 2.05 
 
 2.05 
 2.05 
 2.05 
 2.05 
 
 5.76 
 5.76 
 5.16 
 4.39 
 3.32 
 
 2.66 
 2.66 
 2.05 
 2.05 
 2.05 
 
 2.05 
 2.05 
 2.05 
 1.50 
 4.03 
 
 19.50 
 19.50 
 11.50 
 10.50 
 7.90 
 
 11.00 
 11.00 
 20.70 
 20.70 
 19.50 
 
 18.30 
 11.50 
 11.00 
 7.90 
 
 6.59 
 6.17 
 4.39 
 4.39 
 
 4.03 
 10.50 
 11.00 
 
 5.16 
 4.39 
 4.77 
 20.10 
 10.50 
 7.46 
 
 5.16 
 
 4.77 
 4.77 
 4.02 
 3.67 
 
 4.03 
 2.66 
 2.66 
 2.66 
 2.05 
 
 2.99 
 2.99 
 2.05 
 2.05 
 2.05 
 
 1.77 
 
 5.16 
 
 20.70 
 
 20.70 
 
 15.20 
 
 15.20 
 15.20 
 21.90 
 20.70 
 15.70 
 
 11.00 
 9.76 
 9.29 
 20.70 
 20.70 
 
 21.90 
 21.90 
 20.70 
 20.70 
 20.70 
 
 20.70 
 20.70 
 20.10 
 18.30 
 16.90 
 
 12.50 
 12.50 
 12.00 
 10.50 
 10.50 
 
 9.76 
 8.82 
 8.82 
 7.90 
 6.59 
 
 6.17 
 6.17 
 6.17 
 6.17 
 
 7.46 
 7.46 
 7.46 
 7.46 
 6.17 
 6.17 
 
374 
 
 Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 
 
 for 1911. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 15.70 
 
 21.90 
 
 15.70 
 
 18.30 
 
 19.50 
 
 7.5 
 
 20.70 
 
 4.77 
 
 18.3 
 
 18.30 
 
 5.16 
 
 20.70 
 
 21.90 
 
 12.50 
 
 17.40 
 
 18.30 
 
 16.9 
 
 20.70 
 
 4.77 
 
 18.3 
 
 18.30 
 
 4.77 
 
 18.90 
 
 21.90 
 
 12.50 
 
 18.30 
 
 16.90 
 
 18.3 
 
 20.70 
 
 4.03 
 
 18.3 
 
 18.30 
 
 4.77 
 
 20.70 
 
 21.90 
 
 12.00 
 
 16.90 
 
 16.90 
 
 18.3 
 
 20.70 
 
 3.67 
 
 20.7 
 
 20.70 
 
 7.46 
 
 20.70 
 
 21.90 
 
 12.00 
 
 14.60 
 
 16.90 
 
 18.3 
 
 20.70 
 
 3.67 
 
 19.5 
 
 19.50 
 
 8.82 
 
 19.50 
 
 21.90 
 
 11.50 
 
 14.60 
 
 16.90 
 
 19.5 
 
 20.70 
 
 3.21 
 
 18.3 
 
 18.90 
 
 9.29 
 
 16.90 
 
 21.90 
 
 11.50 
 
 14.10 
 
 19.50 
 
 20.7 
 
 20.70 
 
 3.21 
 
 20.7 
 
 18.30 
 
 10.50 
 
 13.00 
 
 21.90 
 
 10.50 
 
 14.10 
 
 16.90 
 
 20.7 
 
 20.70 
 
 3.21 
 
 20.7 
 
 16.90 
 
 12.50 
 
 13.00 
 
 21.90 
 
 9.76 
 
 13.60 
 
 20.70 
 
 20.7 
 
 20.70 
 
 5.76 
 
 19.5 
 
 16.90 
 
 10.50 
 
 13.00 
 
 21.90 
 
 11.50 
 
 12.50 
 
 20.70 
 
 20.7 
 
 20.70 
 
 4.77 
 
 19.5 
 
 15.70 
 
 9.29 
 
 13.00 
 
 21.90 
 
 11.50 
 
 12.50 
 
 20.70 
 
 20.7 
 
 20.70 
 
 4.77 
 
 20.7 
 
 15.70 
 
 10.50 
 
 13.00 
 
 20.70 
 
 10.50 
 
 12.00 
 
 18.30 
 
 20.7 
 
 20.70 
 
 4.77 
 
 20.7 
 
 15.70 
 
 10.50 
 
 12.50 
 
 20.70 
 
 10.50 
 
 11.50 
 
 16.90 
 
 20.7 
 
 20.70 
 
 9.76 
 
 19.5 
 
 14.60 
 
 9.29 
 
 12.50 
 
 19.50 
 
 9.29 
 
 10.50 
 
 18.30 
 
 20.7 
 
 20.70 
 
 9.76 
 
 18.3 
 
 13.60 
 
 10.50 
 
 12.50 
 
 18.90 
 
 8.36 
 
 9.29 
 
 20.70 
 
 20.7 
 
 20.70 
 
 9.76 
 
 20.7 
 
 13.60 
 
 12.50 
 
 13.60 
 
 18.30 
 
 8.36 
 
 9.29 
 
 20.70 
 
 20.7 
 
 20.70 
 
 9.76 
 
 20.7 
 
 13.60 
 
 10.50 
 
 14.60 
 
 18.30 
 
 7.90 
 
 20.70 
 
 20.70 
 
 20.7 
 
 19.50 
 
 10.50 
 
 20.7 
 
 12.50 
 
 20.70 
 
 14.60 
 
 16.90 
 
 20.70 
 
 20.70 
 
 20.70 
 
 20.7 
 
 19.50 
 
 10.50 
 
 20.7 
 
 11.50 
 
 20.70 
 
 12.50 
 
 16.30 
 
 19.50 
 
 20.70 
 
 19.50 
 
 20.7 
 
 16.90 
 
 10.50 
 
 20.7 
 
 9.76 
 
 20.70 
 
 10.50 
 
 16.30 
 
 16.90 
 
 20.70 
 
 19.50 
 
 20.7 
 
 16.90 
 
 12.50 
 
 20.7 
 
 9.76 
 
 20.70 
 
 10.50 
 
 15.70 
 
 16.90 
 
 20.70 
 
 19.50 
 
 20.7 
 
 15.70 
 
 12.50 
 
 20.7 
 
 9.29 
 
 20.70 
 
 9.76 
 
 14.60 
 
 15.20 
 
 20.70 
 
 18.30 
 
 20.7 
 
 14.60 
 
 12.50 
 
 20.7 
 
 9.29 
 
 19.50 
 
 9.76 
 
 13.00 
 
 13.60 
 
 20.70 
 
 15.70 
 
 20.7 
 
 11.50 
 
 13.00 
 
 20.7 
 
 7.90 
 
 18.30 
 
 12.50 
 
 12.50 
 
 13.60 
 
 20.70 
 
 12.50 
 
 20.7 
 
 11.50 
 
 13. 50 • 
 
 20.7 
 
 7.90 
 
 18.30 
 
 14.60 
 
 11.00 
 
 12.00 
 
 20.70 
 
 10.50 
 
 20.7 
 
 10.50 
 
 13.50 
 
 20.7 
 
 7.46 
 
 18.30 
 
 19.50 
 
 9.76 
 
 12.00 
 
 20.70 
 
 9.29 
 
 20.7 
 
 8.36 
 
 13.50 
 
 20.7 
 
 6.59 
 
 16.90 
 
 19.50 
 
 12.50 
 
 10.50 
 
 20.70 
 
 8.36 
 
 20.7 
 
 7.46 
 
 13.50 
 
 20.7 
 
 6.17 
 
 15.20 
 
 20.70 
 
 20.70 
 
 9.76 
 
 19.50 
 
 8.36 
 
 20.7 
 
 6.59 
 
 13.50 
 
 20.7 
 
 5.76 
 
 15.20 
 
 19.50 
 
 
 8.36 
 
 18.30 
 
 7.46 
 
 20.7 
 
 5.76 
 
 14.10 
 
 20.7 
 
 5.76 
 
 15.70 
 
 19.50 
 
 
 7.02 
 
 16.90 
 
 7.46 
 
 20.7 
 
 5.76 
 
 14.10 
 
 20.7 
 
 6.59 
 
 15.70 
 
 19.50 
 
 
 20.70 
 
 
 7.46 
 
 
 5.76 
 
 14.10 
 
 
 6.59 
 
 
 Dec. 
 
 1 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16. 
 17. 
 18. 
 19. 
 20. 
 
 21. 
 
 22. 
 23. 
 24. 
 25. 
 
 26. 
 27. 
 28. 
 29. 
 30. 
 31. 
 
 10.50 
 9.29 
 8.26 
 7.46 
 7.46 
 
 7.46 
 
 7.90 
 8.36 
 8.36 
 7.46 
 
 7.46 
 
 5.76 
 13.60 
 20.70 
 20.70 
 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 20.70 
 20.70 
 19.50 
 12.50 
 11.00 
 
 9.29 
 
 8.82 
 8.82 
 8.82 
 8.82 
 9.76 
 
 Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 
 
 for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 7.46 
 
 1.50 
 
 20.70 
 
 20.70 
 
 15.70 
 
 9.29 
 
 12.50 
 
 2.99 
 
 5.16 
 
 11.00 
 
 12.00 
 
 6.59 
 
 1.50 
 
 20.70 
 
 20.70 
 
 20.70 
 
 9.29 
 
 13.00 
 
 2.99 
 
 15.70 
 
 9.76 
 
 12.00 
 
 5.76 
 
 2.66 
 
 20.70 
 
 20.70 
 
 20.70 
 
 7.90 
 
 14.10 
 
 3.32 
 
 20.70 
 
 9.29 
 
 9.76 
 
 4.77 
 
 5.16 
 
 20.70 
 
 20.70 
 
 20.70 
 
 7.02 
 
 13.00 
 
 3.32 
 
 20.70 
 
 9.76 
 
 8.36 
 
 4.39 
 
 3.32 
 
 19.50 
 
 20.70 
 
 19.50 
 
 6.17 
 
 13.00 
 
 2.99 
 
 1'6.90 
 
 7.90 
 
 9.29 
 
 4.03 
 
 2.05 
 
 19.50 
 
 20.70 
 
 19.50 
 
 5.16 
 
 18.90 
 
 2.99 
 
 15.70 
 
 5.76 
 
 8.36 
 
 4.03 
 
 1.77 
 
 19.50 
 
 20.70 
 
 16.60 
 
 5.16 
 
 20.70 
 
 2.99 
 
 15.70 
 
 4.03 
 
 8.36- 
 
 12.00 
 
 1.50 
 
 18.30 
 
 20.70 
 
 16.90 
 
 7.90 
 
 20.70 
 
 2.99 
 
 15.70 
 
 2.99 
 
 7.46 
 
 11.50 
 
 1.50 
 
 18.30 
 
 20.70 
 
 16.80 
 
 12.50 
 
 18.30 
 
 16.90 
 
 15.70 
 
 2.99 
 
 10.50 
 
 10.50 
 
 1.48 
 
 18.30 
 
 20.70 
 
 16.90 
 
 20.70 
 
 16.30 
 
 16.90 
 
 12.50 
 
 2.99 
 
 20.70 
 
 8.36 
 
 2.99 
 
 18.30 
 
 20.70 
 
 14.60 
 
 20.70 
 
 14.10 
 
 15.70 
 
 11.50 
 
 2.99 
 
 20.70 
 
 6.59 
 
 3.32 
 
 20.70 
 
 20.70 
 
 13.60 
 
 20.70 
 
 11.50 
 
 15.70 
 
 12.50 
 
 2.99 
 
 20.70 
 
 6.17 
 
 9.29 
 
 20.70 
 
 20.70 
 
 13.60 
 
 18.30 
 
 11.50 
 
 16.90 
 
 10.50 
 
 2.66 
 
 20.70 
 
 4.77. 
 
 10.50 
 
 20.70 
 
 19.50 
 
 12.50 
 
 16.90 
 
 13.60 
 
 16.80 
 
 8.36 
 
 7.90 
 
 20.70 
 
 4.77 
 
 7.46 
 
 19.50 
 
 19.50 
 
 10.50 
 
 16.90 
 
 11.50 
 
 15.70 
 
 9.29 
 
 7.90 
 
 20.70 
 
 4.03 
 
 5.16 
 
 19.50 
 
 19.50 
 
 9.76 
 
 20.70 
 
 9.76 
 
 13.00 
 
 12.00 
 
 6.59 
 
 20.70 
 
 4.03 
 
 3.G7 
 
 18.30 
 
 19.50 
 
 10.50 
 
 20.70 
 
 8.82 
 
 10.50 
 
 9.29 
 
 5.16 
 
 20.70 
 
 4.03 
 
 3.32 
 
 20.70 
 
 19.50 
 
 10.50 
 
 16.90 
 
 8.82 
 
 9.29 
 
 9.29 
 
 4.77 
 
 20.70 
 
 3.32 
 
 4.03 
 
 20.70 
 
 19.50 
 
 10.50 
 
 19.50 
 
 7.80 
 
 11.50 
 
 9.29 
 
 7.46 
 
 20.70 
 
 2.66 
 
 10.50 
 
 20.70 
 
 19.50 
 
 9.76 
 
 16.90 
 
 7.90 
 
 7.90 
 
 10.50 
 
 7.46 
 
 20.70 
 
 2.66 
 
 20.70 
 
 20.70 
 
 18.30 
 
 12.50 
 
 15.20 
 
 7.90 
 
 7.02 
 
 10.50 
 
 7.46 
 
 20.70 
 
 2.05 
 
 20.70 
 
 20.70 
 
 18.30 
 
 10.50 
 
 14.10 
 
 7.90 
 
 5.16 
 
 10.50 
 
 5.76 
 
 19.50 
 
 2.05 
 
 18.30 
 
 19.50 
 
 18.30 
 
 8.82 
 
 14.10 
 
 8.82 
 
 5.16 
 
 8.36 
 
 16.90 
 
 18.30 
 
 2.05 
 
 17.40 
 
 19.50 
 
 18.30 
 
 8.82 
 
 15.70 
 
 11.00 
 
 3.32 
 
 5.76 
 
 16.90 
 
 13.00 
 
 3.32 
 
 17.40 
 
 19.50 
 
 18.30 
 
 9.29 
 
 14.10 
 
 9.29 
 
 3.32 
 
 5.76 
 
 19.50 
 
 12.50 
 
 2.66 
 
 17.40 
 
 20.70 
 
 18.30 
 
 10.50 
 
 14.10 
 
 8.36 
 
 2.66 
 
 5.76 
 
 20.70 
 
 11.50 
 
 2.05 
 
 20.70 
 
 20.70 
 
 18.30 
 
 15.70 
 
 12.50 
 
 8.36 
 
 4.39 
 
 3.32 
 
 20.70 
 
 11.00 
 
 1.77 
 
 20.70 
 
 20.70 
 
 18.30 
 
 15.70 
 
 11.50 
 
 7.90 
 
 9.29 
 
 2.66 
 
 20.70 
 
 11.00 
 
 1.77 
 
 20.70 
 
 19.50 
 
 18.30 
 
 12.50 
 
 12.50 
 
 7.90 
 
 7.02 
 
 2.66 
 
 16.90 
 
 11.50 
 
 1.77 
 
 
 20.70 
 
 18.30 
 
 10.50 
 
 14.10 
 
 7.02 
 
 6.59 
 
 7.02 
 
 12.50 
 
 11.50 
 
 1.50 
 
 
 20.70 
 
 
 10.50 
 
 
 6.17 
 
 5.16 
 
 
 12.00 
 
 
 Dec. 
 
 1 
 2 
 2 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 20.70 
 18.30 
 15.20 
 11.00 
 10.50 
 8.82 
 12.50 
 16.90 
 15.70 
 12.50 
 
 10.50 
 8.36 
 8.82 
 
 8.36 
 7.90 
 8.82 
 8.36 
 11.00 
 
 9.29 
 
 9.29 
 
 9.29 
 
 20.70 
 
 20.70 
 
 20.70 
 18.90 
 12.50 
 15.70 
 12.00 
 12.50 
 
 Note.— This weir measures discharge in flowing streams when oombined flow is less than 20 million 
 gallons (except for seepage gains or losses). 
 
ISLAND OF HAWAII. 375 
 
 Monthly discharge of Kohala ditch at Awini weir, near Kohala, Hawaii, for 1907-1912. 
 
 Month. 
 
 Discharge in million 
 
 gallons. 
 
 Run-off 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 1907. 
 July... 
 
 20.70 
 21.90 
 21.90 
 21.90 
 21.90 
 21.90 
 
 0.17 
 4.03 
 2.99 
 9.76 
 8.82 
 5.16 
 
 9.84 
 15.30 
 
 9.98 
 17.60 
 15.00 
 13.00 
 
 276 
 
 
 474 
 
 September 
 
 299 
 
 October 
 
 545 
 
 November 
 
 449 
 
 December 
 
 239 
 
 
 
 The period 
 
 
 
 13.40 
 
 2,280 
 
 
 
 
 
 1908. 
 January 
 
 21.90 
 20.70 
 16.90 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 
 5.76 
 
 3.67 
 
 2.05 
 
 5.76 
 
 5.76 
 
 9.29 
 
 15.70 
 
 12.50 
 
 13.00 
 
 7.46 
 
 4.77 
 
 13.60 
 
 12.20 
 11.80 
 5.18 
 14.90 
 16.10 
 17.20 
 19.20 
 18.80 
 17.80 
 14.10 
 12.00 
 18.80 
 
 378 
 
 February 
 
 341 
 
 March 
 
 161 
 
 April 
 
 450 
 
 May 
 
 500 
 
 June 
 
 516 
 
 July 
 
 595 
 
 August 
 
 583 
 
 
 533 
 
 October 
 
 437 
 
 
 360 
 
 December* 
 
 584 
 
 
 
 The year '„ 
 
 21.90 
 
 2.05 
 
 15.00 
 
 5,390 
 
 
 1909. 
 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 19.50 
 21.90 
 14.60 
 12.00 
 20.70 
 
 2.99 
 13.60 
 16.90 
 5.76 
 4.03 
 5.76 
 4.77 
 4.39 
 2.05 
 2.66 
 2.66 
 1.24 
 
 11.50 
 
 18.80 
 
 20. 1Q 
 
 13.90 
 
 15.70 
 
 11.30 
 
 17.90 
 
 9.70 
 
 9.31 
 
 7.39 
 
 6.73 
 
 8.49 
 
 356 
 
 February 
 
 527 
 
 
 622 
 
 April 
 
 418 
 
 May 
 
 487 
 
 June ." 
 
 338 
 
 July 
 
 555 
 
 August 
 
 301 
 
 September 
 
 279 
 
 October 
 
 229 
 
 November 
 
 202 
 
 December 
 
 263 
 
 
 
 The year 
 
 21.90 
 
 1.24 
 
 12.50 
 
 4,620 
 
 
 1910. 
 
 20.70 
 19.50 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 8.36 
 20.70 
 21.90 
 21.90 
 
 6.17 
 7.90 
 3.32 
 7.02 
 4.03 
 14.10 
 12.50 
 7.90 
 1.50 
 4.03 
 1.77 
 6.17 
 
 15.10 
 13.10 
 12.30 
 10.40 
 14.50 
 17.80 
 17.90 
 17.20 
 
 3.43 
 10.60 
 
 9.08 
 12.20 
 
 469 
 
 February 
 
 367 
 
 
 383 
 
 April 
 
 413 
 
 
 449 
 
 June 
 
 535 
 
 
 555 
 
 August 
 
 532 
 
 
 104 
 
 October 
 
 329 
 
 November 
 
 272 
 
 December 
 
 378 
 
 
 
 The year 
 
 21.90 
 
 1.50 
 
 13.10 
 
 4,790 
 
 
 1911. 
 
 20.70 
 21.90 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 14.10 
 20.70 
 20.70 
 20.70 
 20.70 
 
 9.76 
 9.76 
 7.02 
 9.29 
 7.46 
 7.50 
 5.76 
 8.21 
 18.30 
 5.76 
 4.77 
 5.76 
 
 15.30 
 
 18.40 
 12.30 
 16.70 
 16.30 
 19.80 
 16.40 
 9.08 
 20.10 
 12.60 
 13.40 
 12.70 
 
 475 
 
 February 
 
 515 
 
 
 383 
 
 April 
 
 502 
 
 May 
 
 504 
 
 June 
 
 596 
 
 July 
 
 507 
 281 
 
 August 
 
 September 
 
 604 
 
 October 
 
 391 
 
 403 
 
 November 
 
 December 
 
 393 
 
 
 The year 
 
 21.90 
 
 3.21 
 
 15.20 
 
 5,550 
 
 
376 
 
 Monthly discharge of Kohala ditch at Awini weir, near Kohala, Hawaii, for 1907-1912 — 
 
 Continued. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Run-off 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 1912. 
 January 
 
 12.00 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 20.70 
 16.90 
 20.70 
 20.70 
 ^20.70 
 20.70 
 
 1.50 
 1.48 
 18.30 
 18.30 
 8.82 
 5.16 
 6.17 
 2.66 
 2.66 
 2.66 
 7.46 
 7.90 
 
 4.63 
 
 8.85 
 20.00 
 19.60 
 13.70 
 13.90 
 11.50 
 
 8.08 
 10.60 
 
 9.43 
 15.10 
 12.70 
 
 143 
 
 February 
 
 257 
 
 March 
 
 619 
 
 April 
 
 589 
 
 May 
 
 426 
 
 June 
 
 417 
 
 July . 
 
 357 
 
 August 
 
 251 
 
 September 
 
 319 
 
 October 
 
 292 
 
 November 
 
 454 
 
 December 
 
 393 
 
 
 
 The year 
 
 20.70 
 
 1.48 
 
 12. 30 
 
 4,520 
 
 
 Daily discharge, in million gallons, of Kohala ditch at Honohane weir, near Kohala, 
 
 Hawaii, for 1907. 
 
 Day. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 13.20 
 12.50 
 5.41 
 16.70 
 15.50 
 
 17.10 
 11.90 
 16.60 
 13. 00 
 12.40 
 
 11.90 
 
 21.10 
 
 7.58 
 
 7.05 
 
 11.70 
 
 11.60 
 11.90 
 13.10 
 
 .48 
 10.20 
 
 .48 
 
 .48 
 
 2.26 
 
 4.28 
 
 10.60 
 
 14.50 
 12.80 
 1.67 
 5.41 
 10.20 
 16.40 
 
 10.60 
 
 14.50 
 
 17.10 
 
 .48 
 
 1.67 
 
 8.63 
 1.67 
 
 2.85 
 .48 
 .48 
 
 .48 
 2.26 
 6.50 
 
 .48 
 .48 
 
 '"5*96* 
 10.60 
 8.63 
 8.63 
 
 4.85 
 6.50 
 11.90 
 16.70 
 13.70 
 
 '"*"." 48* 
 
 .48 
 
 2.26 
 
 9.65 
 
 13.70 
 
 18.40 
 18.80 
 20.30 
 18.40 
 20.60 
 
 19.20 
 13.10 
 19.60 
 20.60 
 16.60 
 
 17.80 
 13.80 
 13.10 
 20.30 
 16.10 
 
 14.80 
 14.80 
 13.00 
 15.10 
 11.60 
 
 13.10 
 1.68 
 1.68 
 2.94 
 6.74 
 
 10.60 
 2.94 
 2.94 
 6.17 
 
 10.00 
 
 6.74 
 7.87 
 11.10 
 11.60 
 1.68 
 
 1.68 
 1.68 
 2.94 
 6.74 
 3.54 
 
 4.72 
 9.51 
 13.80 
 12.10 
 5.31 
 
 12.10 
 1.68 
 1.68 
 1.68 
 1.68 
 
 1.68 
 1.68 
 2.94 
 6.74 
 12.60 
 
 13. 80 
 7.31 
 
 1.68 
 6.17 
 7.87 
 4.72 
 
 4.13 
 7.31 
 1.68 
 1.68 
 4.13 
 
 6.74 
 11.10 
 13.10 
 1.68 
 6.74 
 
 12.10 
 12.10 
 13.10 
 14.30 
 10.60 
 
 12.10 
 13.10 
 11.90 
 12.30 
 11.10 
 
 11.60 
 8.97 
 3.54 
 2.94 
 8.42 
 
 8.97 
 6.74 
 1.68 
 8.42 
 11.60 
 
 13.10 
 
 2 
 
 14.30 
 
 3 
 
 15.00 
 
 4 
 
 13.60 
 
 5 
 
 14.00 
 
 6 
 
 11.10 
 
 7. 
 
 11.50 
 
 8 
 
 12.70 
 
 9 
 
 12.80 
 
 10 
 
 11.40 
 
 11 
 
 10.60 
 
 12 
 
 11.30 
 
 13 
 
 12.10 
 
 14 .... 
 
 6.74 
 
 15. 
 
 11.10 
 
 16 
 
 15.70 
 
 17 
 
 13.20 
 
 18 
 
 11.90 
 
 19 
 
 11.90 
 
 20 
 
 11.20 
 
 21 . ... 
 
 11.20 
 
 22 
 
 11.20 
 
 23 
 
 11.20 
 
 24 
 
 11.20 
 
 25 
 
 13.90 
 
 26 
 
 12.50 
 
 27 
 
 11.10 
 
 28 
 
 6.74 
 
 29 
 
 1.68 
 
 29 
 
 1.68 
 
 31 
 
 1.68 
 
 
 
ISLAND OF HAWAII. 
 
 377 
 
 Daily discharge, in million gallons, of Kohala ditch at Honokane weir, near Kohala, 
 
 Hawaii, for 1908. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 2.94 
 2.94 
 2.94 
 
 7.87 
 10.60 
 
 12.10 
 13.10 
 14.80 
 15.70 
 16.60 
 
 11.40 
 10.30 
 10.70 
 10.70 
 1.68 
 
 2.94 
 
 7.87 
 11.10 
 11.10 
 
 7.87 
 
 11.10 
 13.80 
 13.70 
 12.20 
 11.80 
 
 12.20 
 10.50 
 10.20 
 4.72 
 2.94 
 1.68 
 
 6.74 
 6.74 
 2.94 
 5.31 
 2.94 
 
 2.94 
 2.94 
 2.94 
 2.94 
 
 7.87 
 
 11.10 
 14.30 
 14.80 
 12.00 
 12.10 
 
 13.10 
 12.10 
 13.10 
 11.90 
 12.30 
 
 10.70 
 11.30 
 11.40 
 10.60 
 9.87 
 
 9.90 
 9.20 
 9.56 
 9.56 
 
 9.55 
 9.16 
 9.90 
 9.90 
 10.30 
 
 13.70 
 6.74 
 8.63 
 
 11.20 
 9.98 
 
 9.87 
 9.90 
 9.21 
 9.21 
 9.90 
 
 12.10 
 11.00 
 9.89 
 9.14 
 
 8.88 
 
 9.16 
 9.16 
 8.86 
 8.86 
 9.21 
 
 9.21 
 
 8.52 
 8.52 
 8.48 
 8.48 
 8.48 
 
 17.00 
 
 11.10 
 
 5.31 
 
 5.31 
 
 8.97 
 
 12.10 
 15.30 
 13.10 
 
 8.42 
 7.87 
 
 6.74 
 5.31 
 2.94 
 2.94 
 2.94 
 
 2.94 
 2.94 
 2.94 
 2.94 
 2.94 
 
 2.94 
 5.31 
 6.74 
 8.97 
 12.10 
 
 12.30 
 11.30 
 10.60 
 9.14 
 10.70 
 
 10.70 
 10.40 
 12.70 
 4.13 
 5.31 
 
 2.94 
 2.94 
 2.94 
 2.94 
 2.94 
 
 2.94 
 5.31 
 8.97 
 10.00 
 11.10 
 
 12.10 
 
 7.87 
 7.87 
 6.74 
 
 7.87 
 
 8.97 
 10.00 
 6.74 
 7.87 
 5.31 
 
 5^31 
 5.31 
 6.74 
 6.74 
 
 7.87 
 8.97 
 
 11.10 
 13.10 
 13.50 
 12.10 
 10.00 
 
 7.87 
 8.97 
 10.00 
 6.74 
 
 7.87 
 
 7.87 
 5.31 
 5.31 
 2.94 
 2.94 
 
 2.94 
 4.13 
 5.31 
 2.94 
 2.94 
 
 2.94 
 2.94 
 2.94 
 2.94 
 2.94 
 
 4.13 
 5.31 
 6.74 
 8.97 
 
 7.87 
 
 6.99 
 4.62 
 4.62 
 4.62 
 4.62 
 
 5.82 
 5.82 
 9.55 
 8.43 
 4.62 
 
 5.82 
 6.99 
 8.43 
 4.62 
 5.82 
 
 6.99 
 8.43 
 6.99 
 4.62 
 5.82 
 
 6.99 
 6.99 
 9.55 
 9.55 
 4.62 
 
 4.62 
 4.62 
 4.62 
 4.62 
 4.62 
 4.62 
 
 4,62 
 4.26 
 5.82 
 6.99 
 6.99 
 
 4.62 
 4.62 
 4.62 
 5.82 
 6.99 
 
 6.99 
 8.43 
 6.99 
 4. 62 
 4.62 
 
 4.62 
 5.82 
 6.99 
 8.43 
 9.55 
 
 11.70 
 
 12.80 
 
 11.70 
 
 6.99 
 
 4.62 
 
 4.62 
 4.62 
 5.82 
 6.99 
 4.62 
 4.62 
 
 4.62 
 4.62 
 5.82 
 6.99 
 8.43 
 
 9.55 
 11.20 
 11.70 
 12.30 
 
 9.55 
 
 4.62 
 4.62 
 5.82 
 6.99 
 6.99 
 
 5.82 
 6.99 
 4.62 
 4.62 
 4.62 
 
 4.62 
 5.82 
 6.99 
 8.43 
 9.55 
 
 9.55 
 10.60 
 8.43 
 9.55 
 10.60 
 
 11.70 
 12.80 
 13.80 
 16.00 
 16.90 
 
 11.70 
 9.55 
 10.60 
 11.70 
 11.90 
 
 10.20 
 10.30 
 10.50 
 10.50 
 4.62 
 
 4.62 
 5.82 
 4.62 
 6.99 
 9.55 
 
 4.62 
 5.82 
 6.99 
 8.43 
 9.55 
 
 10.60 
 11.70 
 11.60 
 9.65 
 9.85 
 9.77 
 
 12.20 
 10.30 
 9.98 
 9.87 
 10. 60 
 
 .4.62 
 5.82 
 5.82 
 9.55 
 
 11.70 
 
 9.85 
 9.78 
 7.66 
 9.02 
 9.48 
 
 9.48 
 9.87 
 10.70 
 11.90 
 5.82 
 
 10.00 
 9.35 
 9.18 
 9.64 
 
 10.10 
 
 8.43 
 4.62 
 4.62 
 4.62 
 4.62 
 
 4.62 
 
 2 
 
 4.62 
 
 3 
 
 4.62 
 
 4 
 
 5.82 
 
 5 
 
 6.99 
 
 6 
 
 4.62 
 
 7 
 
 4.62 
 
 8 
 
 4.62 
 
 9 
 
 4.62 
 
 10 
 
 4.62 
 
 11 
 
 5.82 
 
 12 
 
 6.99 
 
 13 
 
 9.55 
 
 14 
 
 10.60 
 
 15... 
 
 11.20 
 
 16 
 
 11.70 
 
 17 
 
 4.62 
 
 18 
 
 4.62 
 
 19 
 
 4.62 
 
 20 
 
 4.62 
 
 21 
 
 4.62 
 
 22 
 
 5.82 
 
 23 
 
 6.99 
 
 24 
 
 8.43 
 
 25 
 
 4.62 
 
 26 
 
 4.62 
 
 27 
 
 5.'82 
 
 28 
 
 6.99 
 
 29 
 
 8.43 
 
 30 
 
 9.55 
 
 31 
 
 10. 60 
 
 
 
 Daily discharge, in million gallons, of Kohala ditch at Honolcane weir, near Kohala, 
 
 Hawaii, for 1909. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1. 
 2. 
 3. 
 4. 
 5. 
 
 6. 
 
 7. 
 8. 
 9. 
 10. 
 
 11. 
 12. 
 13. 
 14. 
 15, 
 
 16. 
 17. 
 18, 
 19 
 20 
 
 21 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 11.20 
 11.20 
 11.70 
 11.70 
 11.70 
 
 12.80 
 13.80 
 13.10 
 11.90 
 12.80 
 
 12.90 
 13.00 
 13.80 
 14.00 
 13.20 
 
 13.60 
 12.40 
 12.70 
 12.70 
 12.70 
 
 12.70 
 
 12.70 
 
 4.62 
 
 4.62 
 
 4.62 
 
 4.62 
 4.62 
 4.62 
 5.82 
 5.82 
 4.62 
 
 4.62 
 5.82 
 6.99 
 8.43 
 9.55 
 
 4.62 
 5.82 
 6.99 
 9.55 
 10.60 
 
 11.70 
 4.62 
 5.82 
 
 4.62 
 4.62 
 4.62 
 4.62 
 
 4.62 
 4.62 
 4.62 
 
 4.62 
 4.62 
 4.62 
 4.62 
 4.62 
 
 4.62 
 4.62 
 5.82 
 6.99 
 6.99 
 
 4.62 
 4.62 
 5.82 
 6.99 
 
 4.62 
 4.62 
 4.62 
 4.62 
 4.62 
 
 4.62 
 4.62 
 4.62 
 4.62 
 4.62 
 
 4.62 
 4.62 
 4.62 
 5.82 
 6.99 
 8.43 
 
 8.99 
 9.55 
 4.62 
 4.62 
 4.62 
 
 4.62 
 4.62 
 5.82 
 6.41 
 6.99 
 
 8.43 
 8.99 
 8.99 
 9.55 
 10.10 
 
 10.60 
 11.20 
 11.70 
 12.30 
 13.30 
 
 14.30 
 15.50 
 16.50 
 16.90 
 16.50 
 
 14.50 
 13.70 
 11.10 
 10.70 
 10.70 
 
 13.20 
 12.10 
 12.50 
 6.74 
 4.62 
 
 5.82 
 6.99 
 8.43 
 8.43 
 
 9.55 
 
 10.60 
 
 11.20 
 
 4.62 
 
 5.82 
 
 8.43 
 9.55 
 10.60 
 10.60 
 
 11.20 
 11.70 
 10.30 
 11.50 
 13.60 
 
 4.62 
 4.62 
 4.62 
 4.62 
 5.82 
 
 5.99 
 7.28 
 7.94 
 10.40 
 11.30 
 
 12.20 
 9.55 
 10.60 
 
 9.48 
 9.64 
 17.80 
 4.62 
 6.99 
 
 8.43 
 9.55 
 10.60 
 12.80 
 14.80 
 
 12.80 
 13.00 
 11.50 
 11.20 
 12.80 
 
 13.10 
 13.00 
 9.18 
 8.72 
 10.40 
 
 12.00 
 10.90 
 10.80 
 9.18 
 
 9.87 
 11.90 
 10.30 
 11.50 
 14.10 
 
 15.30 
 10.30 
 10.30 
 
 7.65 
 7.65 
 
 7.65 
 7.65 
 7.65 
 7.65 
 7.65 
 
 7.65 
 7.65 
 7.65 
 10.00 
 -7. 65 
 
 7.65 
 
 7.65 
 7.65 
 7.65 
 
 7.65 
 7.65 
 
 8.85 
 10.00 
 12.60 
 13.70 
 14.80 
 
 15.80 
 16.80 
 15.80 
 16.80 
 17.80 
 
 13.80 
 14.30 
 13.10 
 13.60 
 13.60 
 
 13.20 
 13.20 
 13.70 
 11.70 
 9.89 
 
 10.70 
 9.48 
 9.54 
 13.00 
 12.50 
 
 11.40 
 10.60 
 15.20 
 11.90 
 11.00 
 9.02 
 
 10.60 
 10.60 
 9.90 
 9.56 
 9.55 
 
 9.55 
 9.51 
 9.51 
 10.20 
 10.50 
 
 11.90 
 10.30 
 14.80 
 21.30 
 15.60 
 
 10.70 
 10.30 
 20.10 
 36.30 
 14.20 
 
 14.80 
 9.56 
 13.10 
 15.30 
 15.30 
 
 14.60 
 45.00 
 16.40 
 14.80 
 11.60 
 
 10.70 
 11.80 
 14.80 
 12.10 
 11.80 
 
 10.60 
 11.90 
 9.77 
 9.89 
 9.20 
 
 9.21 
 12.20 
 13.10 
 10.30 
 10.30 
 
 9.48 
 9.16 
 9.21 
 9.21 
 9.90 
 
 9.19 
 12.10 
 16.40 
 14.20 
 13.50 
 
 12.10 
 11.70 
 11.70 
 10.60 
 10.30 
 9.98 
 
 12.50 
 11.00 
 15.20 
 15.20 
 14.40 
 
 10.50 
 10.60 
 13.70 
 14.70 
 14.70 
 
 15.20 
 11.20 
 16.30 
 16.30 
 14.70 
 
 12.00 
 10. 20 
 10.60 
 9.48 
 9.16 
 
 9.20 
 9.21 
 9.21 
 
 9.87 
 9.87 
 
 11.90 
 10.50 
 9.87 
 9.21 
 9.19 
 
 9.21 
 9.55 
 9.19 
 9.19 
 8.48 
 
 8.48 
 8.12 
 7.76 
 7.76 
 7.76 
 
 7.76 
 7.76 
 7.76 
 7.76 
 7.40 
 
 7.40 
 9.21 
 12.20 
 14.10 
 12.20 
 
 16.10 
 46.20 
 14.10 
 13.10 
 10.50 
 
 12.20 
 13.10 
 11.10 
 11.60 
 
 9.78 
 10. 40 
 
378 
 
 Daily discharge, in million gallons, of Kohala ditch at Honohane weir, near Kohala, 
 
 Hawaii, for 1910. 
 
 Day. 
 
 1 
 
 2 
 3 
 4 
 5 
 
 6 
 
 7 
 8 
 9 
 10 
 
 11 
 12 
 13 
 14 
 15 
 
 16 
 17 
 18 
 19 
 20 
 
 21 
 
 22 
 23 
 24 
 25 
 
 26 
 27 
 28 
 29 
 30 
 31 
 
 Jan. 
 
 9.14 
 
 8.47 
 8.47 
 8.47 
 11.60 
 
 15.30 
 10.50 
 11.10 
 8.41 
 12.10 
 
 11.90 
 14.80 
 15.30 
 15.30 
 12.70 
 
 13.60 
 14.60 
 20.10 
 15. 30 
 16.50 
 
 16.50 
 12.70 
 12.70 
 11.80 
 10.00 
 
 10.00 
 10.00 
 10.00 
 10.00 
 10.00 
 10.00 
 
 Feb. 
 
 10.00 
 8.85 
 10.00 
 11.50 
 13.10 
 
 13.70 
 14.80 
 14.80 
 15.80 
 12.40 
 
 12.10 
 11.90 
 19.00 
 14.80 
 12.80 
 
 13.00 
 13.00 
 12.60 
 12.30 
 13.50 
 
 13.10 
 12.60 
 12.60 
 15.30 
 13.00 
 
 13.80 
 15.20 
 15.70 
 
 Mar. 
 
 16.10 
 15.80 
 14.10 
 12.00 
 12.00 
 
 14.80 
 15.80 
 15.80 
 12.10 
 12.70 
 
 14.50 
 13.70 
 13.40 
 13.00 
 12.50 
 
 12.50 
 12.80 
 12.40 
 12.40 
 17.90 
 
 16.50 
 16.50 
 17.90 
 19.00 
 17.90 
 
 16.50 
 17.90 
 20.10 
 20.10 
 12.30 
 7.65 
 
 Apr. 
 
 8.85 
 10.90 
 11.50 
 14.80 
 15.80 
 
 12.00 
 13.70 
 11.50 
 12.00 
 13.70 
 
 14.80 
 15.80 
 13.90 
 14.30 
 14.30 
 
 13.70 
 14.10 
 14.10 
 
 8.54 
 8.85 
 
 12.00 
 10.90 
 11.50 
 11.90 
 14.80 
 
 22.60 
 15.80 
 15.30 
 15.20 
 16.10 
 
 May. 
 
 7.65 
 8.85 
 9.44 
 10.00 
 
 8.85 
 
 9.44 
 
 7.65 
 7.65 
 8.85 
 8.85 
 
 9.44 
 10.00 
 11.50 
 12.60 
 13.70 
 
 8.85 
 9.44 
 11.50 
 10.00 
 11.50 
 
 7.32 
 10.50 
 13.60 
 15.40 
 15.60 
 
 15.60 
 15.90 
 15.50 
 14.00 
 14.70 
 9.78 
 
 June. 
 
 10.00 
 10.90 
 12.00 
 13.70 
 9.44 
 
 10.00 
 10.90 
 
 8.85 
 8.85 
 10.00 
 
 12.00 
 12.60 
 7.65 
 
 8.85 
 7.65 
 
 7.65 
 7.65 
 7.65 
 7.65 
 10.00 
 
 11.50 
 10.00 
 8.85 
 10.00 
 12.00 
 
 13.10 
 13.70 
 13.70 
 13.70 
 14.20 
 
 July. 
 
 17.60 
 17.10 
 17.10 
 11.10 
 11.10 
 
 11.10 
 11.10 
 11.10 
 11.10 
 11.10 
 
 11.10 
 11.10 
 12.30 
 12.30 
 11.10 
 
 11.10 
 12.30 
 14.90 
 16.00 
 16.60 
 
 17.10 
 17.60 
 19.20 
 19.20 
 11.10 
 
 11.10 
 12.30 
 14.90 
 16. 00 
 16.00 
 16.60 
 
 Aug. 
 
 16.00 
 16.00 
 11.10 
 12.30 
 12.30 
 
 14.30 
 11.10 
 11.10 
 12.30 
 12.30 
 
 12.90 
 12.90 
 11.10 
 11.10 
 12.30 
 
 15.40 
 11.90 
 10.40 
 11.60 
 22.20 
 
 22.20 
 14.20 
 11.10 
 12.30 
 14.30 
 
 15.40 
 16.60 
 18.20 
 11.90 
 11.30 
 12.30 
 
 Sept. 
 
 12.80 
 10.50 
 11.80 
 9.98 
 11.30 
 
 11.00 
 11.70 
 12.00 
 12.30 
 12.60 
 
 12.60 
 11.90 
 11.20 
 11.20 
 12.60 
 
 12.20 
 10.70 
 10.60 
 10.30 
 9.21 
 
 9.19 
 9.19 
 9.13 
 9.13 
 9.13 
 
 9.13 
 9.13 
 9.13 
 9.03 
 12.50 
 
 Oct. 
 
 12.30 
 12.30 
 12.10 
 12.30 
 10.10 
 
 10.20 
 10.20 
 14.10 
 14.10 
 15.30 
 
 16.50 
 12.10 
 11.00 
 8.58 
 9.14 
 
 9.14 
 9.14 
 7.76 
 8.14 
 8.14 
 
 14.00 
 11.50 
 11.80 
 10.40 
 9.77 
 
 10.60 
 8.83 
 11.00 
 12.80 
 11.50 
 10.50 
 
 Nov. 
 
 10. 60 
 9.87 
 9.87 
 9.20 
 8.86 
 
 9.90 
 9.19 
 9.19 
 9.19 
 9.13 
 
 10.20 
 10.20 
 9.80 
 9.13 
 9.13 
 
 8.12 
 12.10 
 14.10 
 11.10 
 14.90 
 
 14.90 
 14.90 
 20.90 
 20.10 
 16.00 
 
 12.60 
 13.00 
 11.90 
 22.20 
 18.10 
 
 Dec. 
 
 9.82 
 9.82 
 11.10 
 11.10 
 11.10 
 
 11.10 
 11.10 
 11.70 
 13.40 
 14.90 
 
 13.60 
 13.60 
 14.10 
 13.10 
 13.10 
 
 13.00 
 13.10 
 12.30 
 12.40 
 11.40 
 
 11.10 
 11.10 
 11.10 
 11.10 
 11.52 
 
 12.10 
 12.10 
 12.10 
 12. 10 
 11.80 
 11.80 
 
 Daily discharge, in million gallons, of Kohala ditch at Honohane weir, near Kohala, 
 
 Hawaii, for 1911. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 16.0 
 11.1 
 12.9 
 11.1 
 11.1 
 
 12.3 
 14.9 
 
 18.7 
 18.7 
 18.7 
 
 18.7 
 18.7 
 19.2 
 19.2 
 19.2 
 
 18.2 
 17.1 
 17.1 
 19.2 
 14.8 
 
 13.1 
 13.0 
 22.0 
 19.2 
 17.1 
 
 12.3 
 
 12.3 
 
 11.1 
 
 12.3. 
 
 12.3 
 
 12.3 
 
 9.82 
 9.82 
 9.82 
 9.82 
 9.82 
 
 9.82 
 9.82 
 9.82 
 9.82 
 9.82 
 
 9.82 
 11.10 
 11.10 
 12.30 
 12.90 
 
 13.40 
 13.40 
 14.90 
 15. 50 
 15.50 
 
 16.00 
 17.10 
 18.70 
 19.20 
 20.80 
 
 22.00 
 19.20 
 11.10 
 
 16.00 
 11.90 
 11.90 
 12.40 
 12.40 
 
 12.10 
 12.10 
 12.30 
 11.40 
 13.00 
 
 13.00 
 13.10 
 11.50 
 10.30 
 10.40 
 
 10.40 
 10.10 
 11.10 
 12.30 
 14.90 
 
 14.90 
 16.60 
 18.20 
 18.20 
 19.70 
 
 13.30 
 12.30 
 9.78 
 9.64 
 10.20 
 18.10 
 
 13.4 
 14.3 
 13.4 
 14.9 
 17.2 
 
 17.2 
 17.6 
 17.6 
 13.9 
 11.9 
 
 11.9 
 12.4 
 13.0 
 12.3 
 11.1 
 
 12.7 
 18.1 
 18.1 
 18.1 
 18.1 
 
 18.1 
 18.1 
 18.1 
 16.9 
 11.1 
 
 11.1 
 11.1 
 12.3 
 13.4 
 14.9 
 
 12.3 
 13.4 
 14.9 
 14.9 
 14.9 
 
 14.9 
 12.3 
 14.9 
 11.1 
 11.1 
 
 11.1 
 13.4 
 14.9 
 13.4 
 11.1 
 
 11.1 
 11.1 
 11.1 
 12.3 
 12.3 
 
 12.3 
 13.4 
 16.0 
 15.8 
 13.1 
 
 13.5 
 13.6 
 12.8 
 13.7 
 13.7 
 13.7 
 
 21.7 
 19.9 
 18.5 
 13.4 
 13.4 
 
 12.3 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 12.3 
 12.3 
 14.9 
 14.9 
 
 16.0 
 17.1 
 13.8 
 13.8 
 13. Q 
 
 14.4 
 14.5 
 14.5 
 13.8 
 13.8 
 13.8 
 
 11.7 
 11.7 
 11.7 
 11.0 
 10.3 
 
 10.6 
 10.6 
 10.6 
 11.5 
 11.7 
 
 11.0 
 12.5 
 13.0 
 13.0 
 13.0 
 
 13.0 
 13.1 
 13.1 
 13.1 
 12.8 
 
 11.9 
 11.9 
 11.4 
 11.7 
 11.7 
 
 11.7 
 11.7 
 11.7 
 12.0 
 12.0 
 12.0 
 
 13.4 
 13.4 
 13.4 
 11.1 
 12.3 
 
 13.4 
 11.1 
 11.1 
 12.3 
 12.3 
 
 11.1 
 11.1 
 12.3 
 13.4 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 11.1 
 11.1 
 11.1 
 11.1 
 11.1 
 
 13.40 
 13.40 
 13.40 
 11.10 
 12.30 
 
 12.90 
 13.40 
 14.90 
 14.90 
 16.00 
 
 16.00 
 16.00 
 17.10 
 18.20 
 18.20 
 
 18.20 
 13.60 
 13.00 
 10.60 
 10.60 
 
 11.10 
 11.10 
 10.10 
 10.10 
 10.50 
 
 9.89 
 10.30 
 9.98 
 9.98 
 9.89 
 9.89 
 
 11.30 
 11.00 
 11.00 
 10.50 
 13.10 
 
 14.30 
 13.90 
 13.60 
 13.90 
 14.30 
 
 13.90 
 13.10 
 13.50 
 13.90 
 13.60 
 
 13.90 
 11.10 
 11.10 
 11.10 
 11.10 
 
 11.10 
 12.30 
 13.40 
 13.40 
 13.40 
 
 9.28 
 10.10 
 10.10 
 10.40 
 10.40 
 
 13.90 
 
 2 
 
 14.30 
 
 3 
 
 13.60 
 
 4 
 
 12.90 
 
 5 
 
 12.90 
 
 6 
 
 12.90 
 
 7 
 
 14.00 
 
 8 
 
 13.60 
 
 9 
 
 12.80 
 
 10 
 
 12.90 
 
 11 
 
 12.90 
 
 12 
 
 9.98 
 
 13 
 
 10.90 
 
 14 
 
 11.10 
 
 15 
 
 11.10 
 
 16 
 
 11.10 
 
 17 
 
 11.10 
 
 18 
 
 11.10 
 
 19 
 
 11.10 
 
 20 
 
 11.10 
 
 21.... 
 
 11.10 
 
 22 
 
 11.10 
 
 23 
 
 12.30 
 
 24 
 
 12.80 
 
 25 
 
 11.80 
 
 26 
 
 12.70 
 
 27 
 
 12.30 
 
 28 
 
 13.10 
 
 29 
 
 14.00 
 
 30 
 
 14.00 
 
 31 
 
 14.70 
 
 
 
ISLAND OF HAWAII. 
 
 379 
 
 Daily discharge, in million gallons, of Kohala ditch at Honolcane weir, near Kohala, 
 
 Hawaii, for 1912. 
 
 Day. 
 
 Jan. 
 
 Feb. 
 
 Mar. 
 
 Apr. 
 
 May. 
 
 June. 
 
 July. 
 
 Aug. 
 
 Sept. 
 
 Oct. 
 
 Nov. 
 
 Dec. 
 
 1 
 
 14.50 
 13.70 
 13.80 
 14.00 
 14.40 
 
 12.50 
 12.50 
 12.40 
 13.00 
 11.50 
 
 11.20 
 11.40 
 11.10 
 11.00 
 11.00 
 
 9.90 
 9.90 
 9.90 
 9.90 
 9.87 
 
 9.87 
 9.80 
 9.80 
 9.80 
 13.20 
 
 12.00 
 11.20 
 10.80 
 10.80 
 10.10 
 9.69 
 
 9.69 
 9.69 
 13.10 
 14.30 
 15.40 
 
 11.90 
 10.80 
 10.40 
 
 970 
 
 9.55 
 9.90 
 13.50 
 13.10 
 10.50 
 
 10.60 
 10.30 
 9.90 
 12.50 
 13.10 
 
 30.80 
 30.80 
 18.50 
 14.30 
 14.30 
 
 14.30 
 16.10 
 26.50 
 26.50 
 
 11.10 
 11.10 
 11.10 
 11.10 
 12.30 
 
 12.30 
 12.30 
 13.40 
 13. 40 
 13.40 
 
 13.40 
 11.10 
 11.10 
 11.10 
 12.30 
 
 12.30 
 13.40 
 11.10 
 11.10 
 11.10 
 
 11.10 
 11.10 
 12.30 
 12.30 
 12.30 
 
 11.10 
 11.10 
 11.10 
 12.30 
 11.10 
 11.10 
 
 11.10 
 11.10 
 11.10 
 11.10 
 11.10 
 
 11.10 
 11.10 
 11.10 
 11.10 
 11.10 
 
 11.10 
 11.10 
 11.10 
 12.30 
 12.30 
 
 12.30 
 12.30 
 12.30 
 12.30 
 12.30 
 
 13.40 
 13.40 
 13.40 
 13. 40 
 13.40 
 
 13.40 
 13.40 
 13.40 
 13.40 
 13.40 
 
 16.00 
 11.10 
 11.10 
 11.10 
 12.30 
 
 12.30 
 14.90 
 14.90 
 14.90 
 14.90 
 
 17.10 
 
 18. 20 
 18.20 
 12.80 
 11.50 
 
 11.40 
 13.90 
 13.90 
 13.90 
 13.80 
 
 19.20 
 13.90 
 11.50 
 11.50 
 13.50 
 
 13.90 
 16.00 
 16.00 
 13.60 
 14.80 
 13.90 
 
 12.70 
 12.70 
 11.60 
 10.20 
 10.30 
 
 10.60 
 10.60 
 12.40 
 13.60 
 11.10 
 
 11.10 
 11.10 
 13.40 
 14.90 
 14.90 
 
 11.10 
 11.10 
 14.90 
 12.30 
 14.90 
 
 16.60 
 17.60 
 17.60 
 16.00 
 17.60 
 
 17.60 
 13.60 
 12.10 
 10.30 
 11.20 
 
 11.10 
 11.40 
 12.00 
 12.30 
 12.30 
 
 12.90 
 11.10 
 11.10 
 13.40 
 15.40 
 
 12.00 
 12.10 
 12.10 
 12.60 
 13.00 
 
 13.00 
 12.30 
 12.30 
 10.90 
 10.90 
 
 10.90 
 10.90 
 11.50 
 12.60 
 13.50 
 
 10.40 
 10.40 
 10.10 
 10.10 
 9.46 
 9.56 
 
 10.20 
 10.90 
 11.30 
 11.30 
 10.90 
 
 10.90 
 10.90 
 10.90 
 14.90 
 14.90 
 
 16.00 
 16.00 
 14.90 
 14.90 
 16.00 
 
 12.30 
 11.50 
 11.10 
 12.10 
 10.10 
 
 10.20 
 
 10.60 
 
 10.60 
 
 9.90 
 
 9.90 
 
 9.87 
 10.30 
 12.70 
 11.00 
 10.60 
 10.60 
 
 10.60 
 16.00 
 11.10 
 11.10 
 14.90 
 
 16.00 
 16.00 
 16.00 
 16.00 
 11.90 
 
 11.30 
 11.90 
 11.50 
 11.20 
 11.10 
 
 14.10 
 12.70 
 10.30 
 11.10 
 10.60 
 
 11.50 
 
 10.60 
 
 10.40 
 
 9. 98 
 
 9.98 
 
 9.98 
 9.21 
 9.19 
 9.19 
 10.20 
 
 14.30 
 13.00 
 12.70 
 13.80 
 11.60 
 
 9.98 
 9.90 
 9.54 
 9.54 
 9.54 
 
 9.54 
 9.54 
 9.19 
 11.60 
 11.60 
 
 10.60 
 9.48 
 9.16 
 10.50 
 10.50 
 
 10.50 
 9.98 
 14.90 
 14.90 
 12.30 
 
 11. 10 
 11.10 
 11.10 
 14.90 
 13.60 
 13.30 
 
 13.30 
 12.40 
 12.20 
 10.40 
 11.10 
 
 10.40 
 10.40 
 10.50 
 12.30 
 11. lO- 
 ll. 10 
 11.10 
 11.10 
 11.10 
 11.10 
 
 11.10 
 11.10 
 11.10 
 11.10 
 11.10 
 
 11.10 
 12.30 
 13.40 
 13.10 
 12.80 
 
 13.00 
 12.60 
 12.60 
 13.00 
 13.00 
 
 11.10 
 
 2.. 
 
 13.40 
 
 3 
 
 16.60 
 
 4 
 
 12.60 
 
 5 
 
 12.30 
 
 6 
 
 12.30 
 
 7 
 
 12.80 
 
 8 
 
 14.90 
 
 9 
 
 16.00 
 
 10 
 
 12.80 
 
 11 
 
 12.30 
 
 12 
 
 11.20 
 
 13 
 
 11.50 
 
 14 
 
 11.50 
 
 15 
 
 11.50 
 
 16 
 
 11.20 
 
 17 
 
 10.90 
 
 18 
 
 12.30 
 
 19 
 
 11.20 
 
 20 
 
 12.60 
 
 21 
 
 12.70 
 
 22 
 
 12.70 
 
 23 
 
 12.70 
 
 24 
 
 11.10 
 
 25 
 
 11.10 
 
 26 
 
 11.10 
 
 27 
 
 12.90 
 
 28 
 
 29 
 
 12.80 
 16.00 
 
 30 
 
 12.40 
 
 31 
 
 12.80 
 
 
 
 Note. — The Niulii weir measures the discharge of the Honokane Stream, east and west branches, and 
 also flow over Awini weir when the combined discharge is not over 30 million gallons (except for seepage 
 gains or losses). 
 
 Monthly discharge of Kohala ditch at Honokane weir, near Kohala, Hawaii, for 1907. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Run-off 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 July... 
 
 21.10 
 17.10 
 20.60 
 13.80 
 14.30 
 15.70 
 
 0.48 
 .48 
 1.68 
 1.68 
 1.68 
 1.68 
 
 10.30 
 6.30 
 
 13.20 
 6.03 
 8.46 
 
 11.00 
 
 320 
 
 August 
 
 183 
 
 September 
 
 395 
 
 October 
 
 187 
 
 November 
 
 254 
 
 December 
 
 339 
 
 
 
 The period 
 
 
 
 9.22 
 
 1,680 
 
 
 
 
380 
 
 Monthly discharge of Kohala ditch at Honohane weir, near Kohala, Hawaii, for 1908-1912. 
 
 Month. 
 
 Discharge in million gallons. 
 
 Run-off 
 (total in 
 
 Maximum. 
 
 Minimum. 
 
 Mean. 
 
 million 
 gallons). 
 
 1908. 
 January 
 
 16.60 
 14.80 
 13.70 
 17.00 
 12.70 
 13.50 
 9.55 
 12.80 
 12.30 
 16.90 
 12.20 
 11.70 
 
 1.68 
 2.94 
 6.74 
 2.94 
 2.94 
 2.94 
 4.62 
 4.62 
 4.62 
 4.62 
 4.62 
 4.62 
 
 9.36 
 
 9.08 
 9.52 
 7.67 
 7.05 
 6.39 
 6.12 
 6.51 
 7.49 
 9.77 
 8.64 
 6.47 
 
 290 
 
 February 
 
 263 
 
 
 295 
 
 April 
 
 230 
 
 May 
 
 219 
 
 June 
 
 192 
 
 July 
 
 190 
 
 August 
 
 202 
 
 September 
 
 225 
 
 October 
 
 303 
 
 November 
 
 259 
 
 December , 
 
 201 
 
 
 
 The year 
 
 17.00 
 
 1.68 
 
 7.84 
 
 2,870 
 
 
 
 1909. 
 January 
 
 14.00 
 11.70 
 8.43 
 16.90 
 13.60 
 17.80 
 15.30 
 17.80 
 45.00 
 16.40 
 16.30 
 46.20 
 
 4.62 
 4.62 
 4.62 
 4.62 
 4.62 
 4.62 
 7.65 
 8.85 
 9.51 
 9.16 
 9.16 
 7.40 
 
 10.40 
 
 6.65 
 
 5.24 
 
 10.20 
 
 8.42 
 
 10.40 
 
 9.24 
 
 12.80 
 
 14. 50 
 
 11.20 
 
 11.90 
 
 11.20 
 
 322 
 
 February 
 
 186 
 
 
 162 
 
 April 
 
 306 
 
 
 261 
 
 
 312 
 
 July 
 
 286 
 
 August 
 
 397 
 
 
 435 
 
 October 
 
 346 
 
 
 356 
 
 December 
 
 347 
 
 
 
 The year 
 
 46.20 
 
 4.62 
 
 10. 20 
 
 3,720 
 
 
 
 1910. 
 
 20.10 
 19.00 
 20.10 
 22.60 
 15.90 
 14.20 
 19.20 
 22.20 
 12.80 
 16.50 
 22.20 
 14.90 
 
 8.41 
 8.85 
 7.65 
 8.54 
 7.32 
 7.65 
 11.10 
 10.40 
 9.03 
 7.76 
 8.12 
 9.82 
 
 11.70 
 13.30 
 14.80 
 13.40 
 11.10 
 10.50 
 13.80 
 13.60 
 10.80 
 10.80 
 12.30 
 12.00 
 
 362 
 
 February 
 
 371 
 
 
 459 
 
 
 403 
 
 
 344 
 
 
 315 
 
 July 
 
 429 
 
 August 
 
 420 
 
 
 325 
 
 October 
 
 336 
 
 November : . 
 
 368 
 
 December 
 
 373 
 
 
 
 The year. 
 
 22.60 
 
 7.32 
 
 12.30 
 
 4,500 
 
 
 
 1911. 
 January 
 
 22.00 
 22.00 
 19.70 
 18.10 
 16.00 
 21.70 
 17.10 
 13.10 
 13.40 
 18. 20 
 14.30 
 14.70 
 
 11.10 
 
 . 9.82 
 9.64 
 11.10 
 11.10 
 11.10 
 11.10 
 10.30 
 11.10 
 9.89 
 9.28 
 9.98 
 
 15.60 
 12.80 
 13.00 
 14.70 
 13.20 
 12. 20 
 12.60 
 11.90 
 11.60 
 12.90 
 12.20 
 12.40 
 
 484 
 
 February 
 
 372 
 
 
 404 
 
 
 442 
 
 
 408 
 
 June '. 
 
 366 
 
 July 
 
 391 
 
 August 
 
 369 
 
 
 349 
 
 October 
 
 400 
 
 
 367 
 
 December 
 
 385 
 
 
 
 The year 
 
 22.00 
 
 9.28 
 
 13.00 
 
 4,740 
 
 
 
 1912. 
 January 
 
 14.50 
 30.80 
 13.40 
 13.40 
 19.20 
 17.60 
 15.40 
 16". 00 
 16.00 
 14.90 
 13.40 
 16.60 
 
 9.69 
 9.55 
 11.10 
 11.10 
 11.10 
 10.20 
 9.46 
 9.87 
 9.19 
 9.16 
 11.10 
 11.10 
 
 11.40 
 14.50 
 11.80 
 12.10 
 14.10 
 13.20 
 11.70 
 11.90 
 11.90 
 11.40 
 11.70 
 12.60 
 
 355 
 
 February 
 
 420 
 
 
 366 
 
 April 
 
 364 
 
 
 436 
 
 June 
 
 396 
 
 
 364 
 
 August 
 
 368 
 
 
 356 
 
 
 353 
 
 November 
 
 352 
 
 
 389 
 
 
 
 The year 
 
 30.80 
 
 9.19 
 
 12.30 
 
 4,520 
 
 
 
RAIN GAGING. 
 
 381 
 
 MISCELLANEOUS MEASUREMENTS. 
 
 Miscellaneous measurements on Hawaii in 1912. 
 
 Date. 
 
 Stream. 
 
 Locality. 
 
 Dis- 
 charge. 
 
 Oct. 11 
 
 
 Near Hilo 
 
 Sec.-ft. 
 2.18 
 
 Dec. 5 
 
 do 
 
 Pukihae 
 
 
 6.80 
 
 July 15 
 Oct. 11 
 
 
 33.20 
 
 do 
 
 do 
 
 Near Hilo, 40 feet above railroad culvert 
 
 9.36 
 
 Dec. 5 
 
 Near Hilo, just above railroad culvert 
 
 25.30 
 
 July 15 
 Sept. 18 
 
 18 
 
 ...do 
 
 33.90 
 
 
 Just below mouth of Kikola Stream, government 
 
 road, near Hilo. 
 40 feet above concrete highway bridge, government 
 
 road, near Hilo. 
 30 feet above concrete highway bridge, government 
 
 road, near Hilo. 
 
 64.20 
 
 
 17.20 
 
 18 
 
 Kikola 
 
 2.71 
 
 18 
 
 
 21.50 
 
 19 
 
 Kapue River 
 
 do 
 
 16.57 
 
 19 
 
 Kapue flume 
 
 do 
 
 5.30 
 
 19 
 
 
 ...do... *. 
 
 4.61 
 
 19 
 
 
 ...do... 
 
 11.80 
 
 19 
 
 
 . . .do . 
 
 3.46 
 
 19 
 
 
 . .do 
 
 .33 
 
 Oct. 9 
 
 
 
 No flow. 
 
 g 
 
 
 
 3.87 
 
 g 
 
 
 do 
 
 4.06 
 
 12 
 
 
 .do 
 
 8.43 
 
 10 
 
 
 
 8.25 
 
 10 
 
 
 .do 
 
 4.16 
 
 9 
 
 
 
 5.35 
 
 10 
 
 
 
 6.57 
 
 10 
 
 
 ..do 
 
 .28 
 
 Feb. 8 
 
 
 
 65.40 
 
 Dec. 14 
 
 No.l 
 
 About 1,400 feet elevation, near Hilo 
 
 17.40 
 
 Sept. 5 
 21 
 
 Linoli Springs 
 
 Weir, Hilo Electric Light 
 
 Oo. 
 Tailrace, Hilo Electric Light 
 
 Co. 
 
 Near Ponolu 
 
 8.38 
 
 Wailuku River, near Hilo 
 
 10.90 
 
 Oct. 19 
 
 Hilo...^. 
 
 25.00 
 
 RAIN GAGING. 
 
 The yearly rainfall of the Hawaiian Islands is extremely variable, 
 ranging from a few inches at several low-level leaward localities to 
 more than 400 inches, usually at elevations above 2,000 feet and on 
 the windward sides of the islands. Valleys lying on the same sides of 
 the islands and within a few miles of each other may have a variation 
 in mean annual precipitation of several hundred per cent. The rain- 
 fall may also vary greatly at different elevations in the same valley. 
 As a rule, the zone of heaviest precipitation is on the windward sides 
 of the islands, at elevations 2,000 to 3,000 feet above sea level. 
 
 Generally the daily rain gages maintained by the United States 
 Weather Bureau are located at low levels. Lack of funds and the 
 absence of inhabitants at high-level localities have prevented the 
 maintenance of Weather Bureau stations at high levels, although 
 daily records for a number of places, are furnished that bureau by 
 occupants and caretakers of mountain houses, ranches, etc. The 
 data furnished by the Weather Bureau are, therefore, generally of 
 little value in their relation to stream run-off. 
 
 When high levels are accessible and, insofar as funds are available, 
 high-level rain gages, which are read monthly or bimonthly, have 
 
382 WATER RESOURCES OF HAW An, 1912. 
 
 been established by the Geological Survey and valuable records have 
 been obtained. To accurately determine the precipitation of the Ter- 
 ritory would require the installation of many more gages and the con- 
 struction of many miles of trails. 
 
 Acknowledgment for cooperation in furnishing rainfall data is due 
 to the following: Kauai — E. A. Knudsen, Kekaha Sugar Co., Makee 
 Sugar Co., Hawaiian Sugar Co., Koloa Plantation, Grove Farm Plan- 
 tation, W. F. Sanborn, of Prince ville ranch, and A. Menefoglio, of 
 Kauai Electric Co.; Oahu — E. E. Miller and F. Meyer; Maui — George 
 Gibb, E. Brecht, H. B. Penhallow, David Fleming, Honolua ranch, 
 Hawaiian Commercial & Sugar Co., S. E. Hubbard, and E. Brecht; 
 Hawaii — Hawaii Mill Co., P. W. P. Bluett, James Henderson, George 
 F. Whittemore, W. S. May, and C. F. Clark. 
 
 The following tables show the precipitation at stations maintained 
 by the Geological Survey and give precipitation data furnished from 
 private sources which are not included in United States Weather 
 Bureau records, to which those interested in further data are 
 referred: 
 
RAIN GAGING. 
 
 383 
 
 f 
 
 i 
 
 '8 
 
 g o o © t> 
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 MOOHONtIHN 
 
 IOOCOOOO(N O 
 
 i "hOOJO) 
 
 OOHTfOOOOO 
 U3©TH00 00HO 
 
 oic Tfi o io Oi-h 
 
 t- i-l t^- ■* 0-1 GO 00 
 C<« T-i ' <N Tt? t^ 
 
 <N <N r-H CO •># < 
 
 m <n o o 
 oot-ico<m 
 
 dio 
 
 r-ooSco 
 
 
 NNOO 
 
 ssss 
 
 (OM 'o 
 
 lO CO COt~<-l 
 
 
 ONOHO 
 
 id .-< -* ■* t^ 
 
 ©HO0CON 
 
 ■* p* -*t< cn oo 
 
 oognioco 
 
 © ©O00 00 
 
 oj i-^ci t>^ id 
 
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INDEX. 
 
 A. Page. 
 
 Accuracy of discharge measurements, degree 
 
 of 24 
 
 Acre-foot, definition of 17 
 
 Ah Lo flume, Kaneohe, Oahu, Waikalua 
 
 ditch at 128 
 
 Akulikuli Spring near Kapaa, Kauai 84 
 
 Aleamai Stream near Hilo, Hawaii 381 
 
 Alo division weir, near Huelo, Maui, Koolau 
 
 ditch at 209 
 
 Alo Stream near Huelo, Maui 168-169 
 
 Altitude of islands 30 
 
 Anahola ditch at Kiokala, near Kealia, 
 
 Kauai 89-90 
 
 Anahola River at Kiokala, near Kealia, 
 
 Kauai 88-89 
 
 near Kealia, Kauai 87-88 
 
 Anahola River basin (Kauai), measurements 
 
 in 87-90 
 
 Area of islands 30 
 
 Authority for investigations 9 
 
 Awini weir, near Kohala, Hawaii, Kohala 
 
 ditch at 372-376 
 
 B. 
 
 Bailey, C. T., work of 25 
 
 Book, H. L., work of 25 
 
 Bridge station, definition of 15 
 
 C. 
 
 Cable station, definition of 15 
 
 Center ditch near Huelo, Maui 186-188 
 
 Center ditch region, Maui, measurements 
 
 in 186-188 
 
 China ditch near Hanalei, Kauai 92-93 
 
 Christiansen, E. O., work of 25 
 
 Climate, character of 33 
 
 College of Hawaii, near Honolulu, Oahu, 
 
 Manoa Stream at " 108 
 
 Cooperation with Hawaii 10 
 
 Current meters, use of 13-15 
 
 D. 
 
 Definitions of terms 16-17 
 
 Discharge, definition of 16 
 
 field methods of measuring 11-16 
 
 office methods of computing 19-22 
 
 Discharge measurements, accuracy of 24 
 
 tables of, explanation of 22, 23-24 
 
 Dort, J. C, work of 25 
 
 Dort, S. W., work of 25 
 
 E. 
 
 East Maui, miscellaneous measurements on.. 209 
 
 Eleele, Kauai, Eleele ditch at 98 
 
 Hanapepe ditch at and near 57-60 
 
 seepage from 99 
 
 Eleele, Kauai, Wahiaua Stream at 98 
 
 Equivalents, list of 18 
 
 Everett ditch (Maui). See Palo lo ditch. 
 
 F. 
 
 Field data, accuracy and reliability of 24 
 
 Field methods of measuring stream flow 11-16 
 
 G. 
 
 Gage, automatic, description of 16 
 
 Gage heights, table of, explanation of 22-23 
 
 Gaging stations, classes of 11, 15, 19-20 
 
 lists-of 25-29 
 
 Geography, description of 29-33 
 
 Goo,E. E., workof 25 
 
 Goo, R. M. S., workof 25 
 
 H. 
 
 Haiku ditch at Peahi weir, near Huelo, Maui. 208 
 
 Haipuaena Stream near Huelo, Maui 164-166 
 
 Hakenanahu Stream at Lihue, Kauai 98 
 
 Halehaku Stream at Lihue, Kauai 98 
 
 near Huelo, Maui 194-195 
 
 Halehaku Stream (North Fork) at Waimea, 
 
 Kauai 98 
 
 Halehaku weir, near Huelo, Maui, New 
 
 Hamakua ditch at 199 
 
 Halekua Stream near Waimea, Kauai 50 
 
 Halona Stream in Upper Waiahole Valley, 
 
 Oahu 128 
 
 Halona Stream (North Fork) ha Upper 
 
 Waiahole Valley, Oahu 128 
 
 Hamakua ditch region, Maui, measurements 
 
 in '.. 188-208 
 
 Hamakua group of streams, Hawaii, meas- 
 urements on 367-371 
 
 Hamakuapoko, Maui, Kaluanui ditch near. 205-206 
 
 Hanalei, Kauai, China ditch near 92-93 
 
 Hanalei River near 91-92 
 
 Kaua ditch at 98 
 
 Kiaiakua ditch at 98 
 
 Kiaiakua stream at 98 
 
 Kuna ditch near 93-95 
 
 Hanalei River basin (Kauai), measurements 
 
 in 91-95 
 
 Hanamaulu ditch near Lihue, Kauai 70-71 
 
 Hanamaulu River at Kapaia, near Lihue, 
 
 Kauai ' 64-66 
 
 Hanamaulu River basin (Kauai), measure- 
 ments in 64-66 
 
 Hanapepe ditch near Eleele, Kauai (at Hana- 
 pepe Falls) 57-58 
 
 near Eleele, Kauai (at Koula) 59-60 
 
 seepage from 99 
 
 near Hanapepe, Kauai 60-61 
 
 near Makaueli, Kauai, at Hanapepe weir. 98 
 
 387 
 
388 
 
 INDEX. 
 
 Hanapepe Falls, near Eleele, Kauai, Hana- 
 
 pepe ditch near 57-58 
 
 Hanapepe River at 62 
 
 Hanapepe River (East Branch) at 55 
 
 Hiloa ditch at 62-63 
 
 Hanapepe River (Kauai), Manuahi Stream 
 
 above 98 
 
 Hanapepe River basin (Kauai), measure- 
 ments in 55-63 
 
 Hanapepe River (East Branch) at Hanapepe 
 
 Falls, near Eleele, Kauai 55 
 
 Hanapepe River at Hanapepe Falls, near 
 
 Eleele, Kauai 62 
 
 at Koula, near Eleele, Kauai 55-57 
 
 Hanapepe weir, near Makaueli, Kauai, Hana- 
 pepe ditch at 98 
 
 Hanawai Stream near Papaikou, Hawaii 381 
 
 Hanawai Stream, tributary of, near Hilo, 
 
 Hawaii 381 
 
 Hardy, W. V., work of 25 
 
 Hawaii, gaging stations on 29 
 
 miscellaneous measurements on 381 
 
 precipitation on 385 
 
 Hawaiian Archipelago, altitude of 30 
 
 area of 30 
 
 climate of 33 
 
 geography of 29-33 
 
 Hawaii College. See College of Hawaii. 
 
 Hilo, Hawaii, Aleamai Stream near 381 
 
 Hanawai Stream, tributary of, near 381 
 
 Hilo Electric Light Co. weir near 381 
 
 tailrace at 381 
 
 Honolii River near 213-215, 381 
 
 Kaieie Stream near 381 
 
 Kalooa Stream near .' 381 
 
 Kapue flume near 381 
 
 Kapue River near 381 
 
 Kawainui River near 215-216 
 
 Kikola Stream near 381 
 
 Kumunuiakea River near 381 
 
 Maili River near 381 
 
 No. 1 Stream near 381 
 
 Pohakunanaka River near 381 
 
 Pukihae River near 381 
 
 Hilo, Hawaii, stations near, records of 216-367 
 
 Wailuku River near 212-213 
 
 Hilo Electric Light Co. tailrace at Hilo, Ha- 
 waii 381 
 
 Hilo Electric Light Co. weir at Wailuku 
 
 River, near Hilo, Hawaii 381 
 
 Hilo group of streams, Hawaii, measurements 
 
 in 212-367 
 
 Hiloa ditch at Hanapepe Falls, near Eleele, 
 
 Kauai 62-63 
 
 Homestead, Kauai, Lawai Stream at 98 
 
 Honokahau, Maui, Honolua ditch near 158 
 
 Honokahau ditch above Honolua Stream at 
 
 Honokahau, Maui 162 
 
 at Honokawai weir, near Honokahau, 
 
 Maui 160-161 
 
 at intake, near Honokahau, Maui 158 
 
 near Honokahau, Maui 159-160 
 
 Honokahau Stream basin (Maui), measure- 
 ments in 159-161 
 
 Page. 
 Honokane weir, near Kohala, Hawaii, Kohala 
 
 ditch at. . . . 376-380 
 
 Honokawai ditch near Lahaina, Maui 157 
 
 Honokawai Stream basin (Maui), measure- 
 ments in 157 
 
 Honokawai weir, near Honokahau, Maui, 
 
 Honokahau ditch at 160-161 
 
 Honolii River near Hilo, Hawaii, at Kai- 
 
 wiki 213-215 
 
 near Hilo, Hawaii, below mouth of Ki- 
 kola Stream. 381 
 
 Honolua ditch near Honokahau, Maui 158 
 
 Honolua Stream, Maui, Honokahau ditch 
 
 above 162 
 
 Honolua Stream basin (Maui), measurements 
 
 in 158 
 
 Honolulu, Oahu, Kahuawai Spring near.. 110-111 
 
 Lulumaho ditch near 113-114 
 
 Mahoe Spring at or near 104-105, 128 
 
 Manoa Stream near (at College of Hawaii) 108 
 
 (at upper end o f valley) 106-107 
 
 (at Waialae road) 108-109 
 
 Nuuanu Stream at 111-113 
 
 (at Luakaha weir) 115-116 
 
 Pauoa Stream near 109 
 
 Pukele Stream near 104-105 
 
 Waiomea Stream at 100-102 
 
 (above Pukele Stream) 102-104 
 
 Honomu, Hawaii, Honomu Stream at 381 
 
 Kapahehe Stream near 381 
 
 Makea Stream near 381 
 
 Makoewai Stream near 381 
 
 Honopou Stream near Huelo, Maui 193-194 
 
 Hoolawaliilii Stream near Huelo, Maui 190-191 
 
 Hoolawanui Stream near Huelo, Maui 191-193 
 
 Hooleinakaunualihua ditch (Kauai) below 
 
 county road 98 
 
 Hooleinakaunualihua Stream below county 
 
 road (Kauai) 98 
 
 Howard, E. J., work of 25 
 
 Huelo, Maui, Alo Stream near 158-169 
 
 Center ditch near 186-188 
 
 Haiku ditch near 208 
 
 Haipuaena Stream near 164-166 
 
 Halehaku Stream near 194-195 
 
 Honopou Stream near 193-194 
 
 Hoolawaliilii Stream near 190-191 
 
 Hoolawanui Stream near 191-193 
 
 Kailua Stream near 189 
 
 Koolau ditch near 209 
 
 Lowrie ditch near 207 
 
 Nailiilihaele Stream near 1S8-189 
 
 New Hamakua ditch near 200-204 
 
 at Halehaku weir 199 
 
 near Nailiilihaele weir 198 
 
 Old Hamakua ditch at 204-205 
 
 Oopuola Stream near 171-172 
 
 Opana ditch near 196-197 
 
 Opana Stream near 196 
 
 Puohakamoa Stream near 166-167 
 
 Spreckels ditch near 172-186 
 
 Waikamoi Stream near 169-171 
 
 Huleia River basin (Kauai), measurements 
 
 in 63-64 
 
 Huleia River near Lihue, Kauai 63-64, 98 
 
INDEX. 
 
 389 
 
 I. Page. 
 
 Iao Stream basin (Maui), measurements in. 137-140 
 
 Iao Stream near Wailuku, Maui 137-139 
 
 Investigations, authority for 9 
 
 scope of 10-11 
 
 lrwins flume, Kailua Valley, Qahu, Makawao 
 
 ditch at 128 
 
 K. 
 
 Kaapaa, Kauai, Kaehulua Stream near 80-81 
 
 ■ Kaehulua Stream (North Fork) near 79-80 
 
 Kaehulua Stream (South Fork) near 81-82 
 
 Kaapua Falls (Kauai), Kalihiwai River near 98 
 Kaehulua Stream at Kuhinoa weir, near 
 
 Kapaa, Kauai.... 80-81 
 
 Kaehulua Stream basin (Kauai), measure- 
 ments in, 79-82 
 
 Kaehulua Stream (North Fork) at Kainahola 
 
 ■weir, near Kapaa, Kauai 79-90 
 
 Kaehulua Stream (South Fork) at Wainamu- 
 
 amu weir, near Kapaa, Kauai.. . 81-82 
 Kahakuloa, near Waihee, Maui, Kahakuloa 
 
 Stream at 129-130 
 
 near Wailuku, Maui, Kahakuloa Stream 
 
 above 162 
 
 Kahakuloa Stream basin (Maui), measure- 
 ments in 129-130 
 
 Kahanaiki Stream in Kailua Valley, Oahu. . . 128 
 
 Stream near Waimanalo, Oahu 121 
 
 Kahiliholo Stream at Kilauea, Kauai 98 
 
 Kahoma ditch near Lahaina, Maui 156-157 
 
 Kahoma Stream b^asin (Maui), measurements 
 
 in 155-157 
 
 Kahoma Stream near Lahaina, Maui 155 
 
 Kahuawai Spring near Honolulu, Oahu 110- 
 
 111,128 
 near Honolulu, Oahu, Pauoa Stream 
 
 below 109 
 
 Kaieie Stream near Hilo, Hawaii 381 
 
 Kailua Stream near Huelo, Maui 189 
 
 near Waimanalo, Oahu .- 122 
 
 near Wong Leong ditch, Kailua Valley, 
 
 Oahu 128 
 
 Kailua Valley, box flume ditch in 128 
 
 Kahanaiki Stream in 128 
 
 Makawao ditch in 128 
 
 Kaimi S tream near W aimanalo , O ahu 124 
 
 Kainahola weir, near Kapaa, Kauai, Kaehu- 
 lua Stream (North Fork) at 79-80 
 
 Kaiwiki, near Hilo, Hawaii, Honolii River 
 
 at 213-215 
 
 Kalihiwai ditch at Kilauea, Kauai 98 
 
 Kalihiwai River, Kauai, above mouth 98 
 
 near Kaapua Falls.; 98 
 
 Kilauea, Kauai 90 
 
 Kalihiwai River (West Branch), Kauai, 
 
 above confluence 98 
 
 Kalihiwai River basin, Kauai, measurements 
 
 in 90 
 
 Kalooa Stream near Hilo, Hawaii 381 
 
 Kaluanui ditch at Puuomalei, near Hama- . 
 
 kuapoko, Maui 205-206 
 
 Kamakalepo Stream near Waimanalo, Oahu. 123 
 
 Kamenehune ditch near Waimea, Kauai 47-48 
 
 Kamooloa ditch at Lihue, Kauai 98 
 
 Kanaha ditch near Lihue, Kauai 76-77 
 
 Page. 
 
 Kaneha ditch near Kealia, Kauai 86-87 
 
 Kaneohe, Oahu, Kepo ditch at 128 
 
 Old Waikalua ditch at 128 
 
 rice-mill ditch at 128 
 
 "^ Waikalua ditch at 128' 
 
 waste ditch at 128 
 
 Kapaa, Kauai, Akulikuli Spring near 84 
 
 Kapaa River near 82-84 
 
 Konohiki stream near 113-1 14 
 
 Kuehulua stream near 80-81 
 
 Kuehulua stream (North Fork) near 79-80 
 
 Kuehulua stream (South Fork) near 81-82 
 
 Kapaa River at Kapahi, near Kapaa, Kauai. . 82-84 
 Kapaa River basin (Kauai), measurements 
 
 in 82-87 
 
 Kapahehe Stream near Honomu, Hawaii 381 
 
 Kapahi, near Kapaa, Kauai, Kapaa River at. 82-84 
 
 Kapahi ditch at 85-86 
 
 Kapaia, near Lihue, Kauai, Hanamaulu 
 
 River at . . -. 64-66 
 
 Kapaia Stream (East Branch), Kauai, below 
 
 county road 98 
 
 Kapeha Stream near Pepeekeo, Hawaii 381 
 
 Kapue flume near Hilo, Hawaii 381 
 
 Kapue River near Hilo, Hawaii 381 
 
 Kauaula ditch near Lahaina, Maui 152-154 
 
 Kauaula Stream basin (Maui), measurements 
 
 in 151-154 
 
 Kauaula Stream near Lahaina, Maui 151-152 
 
 Kaua ditch at Hanalei, Kauai 98 
 
 Kauai, ditch seepage and losses on 99-1C0 
 
 gaging station on 25-26 
 
 miscellaneous measurements on 98 
 
 pumped water on 99 
 
 Kauaikanana S tream near Waimea, Kaua i . . . 98 
 
 Kawaikoi Stream near Waimea, Kauai 35-37 
 
 Kawainui River at Pepeekeo, near Hilo, 
 
 Hawaii 215-216 
 
 near Waipio, Hawaii 367-368 
 
 Kawi Stream near Lihue, Kauai 75-76 
 
 Keahua Stream near Lihue, Kauai 75 
 
 Kealia, Kauai, Anahola ditch near 89-90 
 
 Anahola River near 87-88 
 
 Kaneha ditch near 86-87 
 
 Keanae, Maui, Koolau ditch near 162-164 
 
 Kekaha ditch near Waimoa, Kauai 40-45 
 
 Kennedy, H. H., work of 25 
 
 Kepo ditch at Kaneohe, Oahu 128 
 
 Kiaiakua ditch at Hanalei, Kauai 98 
 
 Kiaiakua Stream at Hanalei, Kauai 98 
 
 Kikola Stream near Hilo, Hawaii 381 
 
 near Hilo, Hawaii, Honolii River below. 381 
 
 Kilauea, Kauai, Kahiliholo Stream at 98 
 
 Kalihiwai ditch at 98 
 
 Kalihiwai River near 90 
 
 Kilauea River at 98 
 
 Moloaa Stream at 98 
 
 Papaa Stream at 98 
 
 Poakuma Stream at 98 
 
 Waiule ditch at 98 
 
 Kiokala, Anahola ditch at 89-90 
 
 Anahola River at 87-89 
 
 Kohala ditch at Honokane weir, near Kohala, 
 
 Hawaii 376-380 
 
 near Kohala, Hawaii 371-380 
 
 near Kohala, Hawaii (at Awini weir). . 372-376 
 
390 
 
 INDEX. 
 
 Page. 
 Kohala group of streams, Hawaii, measure- 
 ments on 371-380 
 
 Koiawa Stream near Waipio, Hawaii, Waipio 
 
 River below „ 368 
 
 Koola, Kauai, Omuu Stream at 98 
 
 Poeloelo Stream at 98 
 
 "Waihohonu Stream at 98 
 
 Wilcox ditch near 98 
 
 KonohiM Stream at Makakualele makai weir, 
 
 near Kapaa, Kauai. 78-79 
 
 at Makakualele mauka weir, near Kapaa, 
 
 Kauai... 77-78 
 
 Konohiki Stream basin (Kauai), measure- 
 ments in 77-79 
 
 Koolau ditch near Huelo, Maui 209 
 
 Koolau ditch near Keanae, Maui 162-164 
 
 Koolau ditch region, Maui, measurements in 162-164 
 Koula, near Eleele, Kauai, Hanapepe ditch at 59-60 
 
 Hanapepe River at 55-57 
 
 Kuhinoa weir, near Kapaa, Kauai, Kaehulua 
 
 Stream at 80-81 
 
 Kukuihaele, Hawaii, New Hamakua ditch 
 
 near 370-371 
 
 Kumunuiakea River near Hilo, Hawaii 381 
 
 Kuna ditch near Hanalei, Kauai 93-95 
 
 L. 
 
 Lahaina, Maui, discharge of pumps at 209-211 
 
 Honokawai ditch near 157 
 
 Kahoma ditch near 156-157 
 
 Kahoma Stream near 155 
 
 Kauaula ditch near 152-154 
 
 Kauaula Stream near 151-152 
 
 Lahainaluna Stream near 154-155 
 
 Launiupoko Stream near ." 149-150 
 
 Lahainaluna Stream basin (Maui), measure- 
 ments in 154-155 
 
 Lahainaluna Stream near Lahaina, Maui. . 154-155 
 
 Larrison, G. K., work of 25 
 
 Launiupoko Stream basin (Maui), measure- 
 ments in 149-150 
 
 Launiupoko Stream near Lahaina, Maui. . . 149-150 
 
 Lawai, Kauai, Lawai ditch at 98 
 
 Lawai Stream at 98 
 
 Lawai Stream at Homestead, Kauai 98 
 
 Lihue, Kauai, Hakenanahu Stream at 98 
 
 Lihue, Kauai, Halehaku Stream at 98 
 
 Lihue, Kauai, Hanamaulu ditch near 70-71 
 
 Hanamaulu River near 64-66 
 
 Huleia River near 63-64, 98 
 
 Kamooloa ditch at 98 
 
 Kanaha ditch near 76-77 
 
 Kawi Stream near 75-76 
 
 Keahua Stream near 75 
 
 Lihue ditch near 68-69 
 
 Nawiliwili Stream near 98 
 
 Puhi Stream near 98 
 
 Uhau Iole Stream near 73-74 
 
 Wailua River (North Pork) near 71-73 
 
 Wailua River (North Fork, East Branch 
 
 of) near 74 
 
 Wailua River (South Fork) near 66-68 
 
 Linoli Springs near Ponolu, Hawaii 381 
 
 Lowrie ditch at Opana weir, near Huelo, 
 
 Maui 207 
 
 Luakaha weir in Nuuanu Valley, near Hono- 
 lulu, Oahu 115-116 
 
 Lulumaho ditch in Nuuanu Valley, near 
 
 Honolulu, Oahu 113-114 
 
 Lumahai River basin (Kauai), measurements 
 
 in 95 
 
 Lumahai R i ver near Wainiha, Kauai £5 
 
 M. 
 
 McCandless ditch in Waiahole Valley 128 
 
 Mahoe Springs, Oahu, Pukele Stream at or 
 
 near 104-105,128 
 
 Maili River near Hilo, Hawaii 3S1 
 
 Makakualele makai weir, near Kapaa, Kauai, 
 
 Konohiki Stream at 78-79 
 
 Makakualele mauka weir, near Kapaa, K«uai, 
 
 Konohiki Stream at 77-78 
 
 Makaueli, Kauai, Hanapepe ditch near 98 
 
 Makawao ditch at Irwins flume, Kailua Val- 
 ley, Oahu 128 
 
 near Waimanalo, Oahu 125 
 
 Makawao Stream near Waimanalo, Oahu.. 124-125 
 
 Makaweli, Kauai, Olokele ditch near. 50-52 
 
 Makaweli River basin (Kauai), measure- 
 ments in 48-55 
 
 Makaweli River near Waimea, Kauai 48-50 
 
 Makea Stream near Honomu, Hawaii 381 
 
 Makoewai Stream near Honomu, Hawaii 381 
 
 Maniania ditch near Wailuku, Maui 139-140 
 
 Manianiaula, near Waikane, Oahu, Waiahole 
 
 Stream at 117-119 
 
 Manoa Stream at College of Hawaii, near 
 
 Honolulu, Oahu 108 
 
 at Waialae road, near Honolulu, Oahu. 108-109 
 
 near Honolulu, Oahu 106-107 
 
 Manoa Stream basin (Oahu), measurements 
 
 in 106-111 
 
 Manuahi Stream (Kauai) above Hanapepe 
 
 R iver 98 
 
 Martin, W. F., work of 25 
 
 Maui, gaging stations on 27-29 
 
 miscellaneous measurements on 162, 209 
 
 precipitation on 384 
 
 pumped water on 209-211 
 
 Miner's inch, definition of 17 
 
 Miscellaneous measurements on: 
 
 Hawaii , 381 
 
 Kauai 98 
 
 Maui 162,209 
 
 Oahu 128 
 
 Mohihi Stream near Waimea, Kauai 38-39 
 
 Moloaa Stream at Kilauea, Kauai 98 
 
 N. 
 
 Nailiilihaele Stream near Huelo, Maui 188-189 
 
 Nailiilihaele weir, near Huelo, Maui, New 
 
 Hamakua, ditch at 198 
 
 Nawiliwili S tream near Lihue, Kauai 98 
 
 New Hamakua ditch at Halehaku weir, near 
 
 Huelo, Maui 199 
 
 at Nailiilihaele weir, near Huelo, Maui.. . 198 
 at Waima Stream, near Waipio, Hawaii. 369-370 
 
 near Huelo, Maui. 200-204 
 
 near Kukuihaele, Hawaii 370-371 
 
INDEX. 
 
 391 
 
 North Waiehu Stream near Wailuku, Maui. 135-136 
 
 No. 1 Stream near Hilo, Hawaii 3S1 
 
 Nuuanu Stream at Honolulu, Oahu 111-113 
 
 Nuuanu Stream basin (Oahu), measurements 
 
 in 111-116 
 
 Nuuanu Valley, near Honolulu, Oahu, 
 
 Luakaha weir in 115-116 
 
 Lulumaho ditch in 113-114 
 
 O. 
 
 Oahu, artesian wells on 128-129 
 
 gaging stations on 20-27 
 
 miscellaneous measurements on 128 
 
 precipitation on 384 
 
 Office methods of computing stream flow 19-22 
 
 Old Hamakua ditch at Opana weir, near 
 
 Huelo, Maui 204-205 
 
 Old Waikalua ditch at Kaneohe, Oahu 128 
 
 Olawalu, Maui, Olowalu ditch No. 1, near. . 147-149 
 
 "Ukumehame S tream near 146-147 
 
 Olokele ditch near Makaweli, Kauai 50-52 
 
 near Waimea, Kauai 52-53 
 
 Olowalu ditch No. 1, near Olowalu, Maui. . 147-149 
 Olowalu Stream basin (Maui), measurements 
 
 in. 147-149 
 
 Omuu Stream at Koloa, Kauai 98 
 
 Onomea Stream near Papaikou, Hawaii 3C1 
 
 Oopuola Stream near Huelo, Maui 171-172 
 
 Opana ditch near Huelo, Maui 196-197 
 
 Opana Stream near Huelo, Maui * 196 
 
 Opana weir, near Huelo, Maui, Lowrie ditch 
 
 at 207 
 
 Old Hamakua ditch at 204-205. 
 
 P. 
 
 Palolo (Everett) ditch near Waikapu, Maui. 144-146 
 Palolo Stream basin (Oahu), measurements 
 
 in 100-105 
 
 Papaa Stream at Kilauea, Kauai 98 
 
 Papaikou, Hawaii, Hanawai Stream near 381 
 
 Onomea Stream near , ,381 
 
 Pauoa Stream below Kahuawai Spring, near 
 
 Honolulu, Oahu 109 
 
 Pauoa Valley, Oahu, Kahuawai Spring in. . . 128 
 Peahi weir, near Huelo, Maui, Haiku ditch at. 208 
 
 Pepeekeo, Hawaii, Kapeha Stream near 381 
 
 Kawainui River at 215-216 
 
 Pepeekeo Stream near 381 
 
 Waiaama Stream near 381 
 
 Pierce, C. H., work of *. 25 
 
 Piihonua, near Hilo, Hawaii, stations £t. . . 216-218 
 
 Poakumu Stream at Kilauea, Kauai 98 
 
 Poeloelo Stream at Koloa, Kauai 98 
 
 Pohakea Stream near Waimanalo, Oahu... 122-123 
 
 Pohakunanaka R iver near Hilo, Hawaii 381 
 
 Ponolu, Hawaii, Linoli Springs near 381 
 
 Poowaiomahaihai ditch near Waimea, Kauai 53-54 
 
 Precipitation, records of 383-385 
 
 Fuhi Stream near Lihue, Kauai 98 
 
 Pukele Stream, near Honolulu, Oahu, Wai- 
 
 omao Stream above 102-404 
 
 Pukele Stream at or near Mahoe Springs, near • 
 
 Honolulu, Oahu 104-105, 128 
 
 Pukihae Stream near Hilo, Hawaii 381 
 
 Puohakamoa Stream near Huelo, Maui 166-167 
 
 Page. 
 Puuomalei, near Hamakuapoko, Maui, Kalu- 
 
 anui ditch at 205-206 
 
 R. 
 
 Rain gaging in Hawaiian Islands 381-385 
 
 Run-off, definition of. 17 
 
 field methods of measuring 11-16 
 
 office methods of computing 19-22 
 
 terms used in expressing 16 
 
 S. 
 
 Scope of investigations 10-11 
 
 Second-foot, definition of 16-17 
 
 South "Waiehu ditch near Wailuku, Maui 162 
 
 South Waiehu Stream near Wailuku, 
 
 Maui 136-137 
 
 Spreckels ditch (West Maui) near Waihee, 
 
 Maui 134-135 
 
 Spreckels ditch (East Maui) near Huelo, 
 
 Maui 172-186 
 
 Spreckels ditch region (East Maui), measure- 
 ments in 164-186 
 
 Stations, records at, on Hawaii Island 212-381 
 
 records at, on Kauai Island 34-100 
 
 on Maui Island -. 129-211 
 
 on Oahu Island 100-129 
 
 Stewart, J. B., work of 25 
 
 Stone Dam ditch, near Kilauea, Kauai, seep- 
 age and loss from 99 
 
 Stream measurement, accuracy of 24 
 
 field methods of 11-16 
 
 office methods of computing 19-22 
 
 T. 
 
 Tables, explanation of 22-24 
 
 Terms, definitions of 16-17 
 
 U. 
 
 Uhau Iole Stream, below falls, Kauai 98 
 
 near Lihue, Kauai 73-74 
 
 Ukumehame Stream basin (Maui), measure- 
 ments in 146-147 
 
 Ukumehame Stream near Olowalu, Maui.. 146-147 
 Upper Waiahole Valley, Oahu, Halona 
 
 Stream in 128 
 
 Halona Stream (North Fork) in ........ . . 12S 
 
 Uwau Stream in 128 
 
 Wahi Streamin 128 
 
 Waianu Stream in 128 
 
 Uwau Stream in Upper Waiahole Valley, 
 
 Oahu *128 
 
 V. 
 
 Velocity-area measurements, methods cf 
 
 making 12-16 
 
 W. 
 
 Wahiaua Stream at Eleele, Kauai 98 
 
 Waiaama Stream near Pepeekeo, Hawaii 381 
 
 Waiahole Stream at Manianiaula, near Wai- 
 
 kane, Oahu 117-119 
 
 at Waiahole, near Waikane, Oahu. £. . 119-121 
 Waiahole Stream basin (Oahu), measure- 
 ments in 116-127 
 
392 
 
 INDEX. 
 
 Page. 
 Waiahole Valley, Oahu, McCandless ditch 
 
 in 128 
 
 See also Upper Waiahole Valley. 
 
 Waiakoali Stream near Waimea, Kauai 37-38 
 
 Waialae road, near Honolulu, Oahu, Manoa 
 
 Stream at 108-109 
 
 Waialae Stream near Waimea, Kauai.... 39-40 
 
 Waianu Stream in Upper Waiahole Valley, 
 
 Oahu... 128 
 
 Waiehu Falls, near Lihue, Kauai, Wailua 
 
 River (South Fork) above 66-68 
 
 Waiehu Stream basin (Maui), measurements 
 
 in 135-137 
 
 See also North Waiehu Stream; South 
 Waiehu Stream. 
 
 Waihee, Maui, Kahakuloa Stream near 129-130 
 
 Spreckels ditch (West Maui) near 134-135 
 
 Waihee canal near 132-133 
 
 Waihee Stream 130-132 
 
 Waihee canal near Wailuku, Maui 134-135 
 
 Waihee Stream basin (Maui), measurements 
 
 in 130-135 
 
 Waihi Stream in Upper Waiahole Valley, 
 
 Oahu 128 
 
 Waihina canal, Kauai, seepage and loss from. 99 
 
 Waihohonu Stream at Koloa, Kauai 98 
 
 Waikalua ditch at Ah Lo flume, Kaneohe, 
 
 Oahu 128 
 
 at Kaneohe, Oahu 128 
 
 See also Old Waikalua ditch. 
 
 Waikamoi Stream near Huelo, Maui 169-171 
 
 Waikane, Oahu, Waikane Stream near 116-117 
 
 Waiahole Stream near (at Manianiaula) 117-119 
 
 (at Waiahole) 119-121 
 
 Waikane Stream basin (Oahu), measure- 
 ments in 116-117 
 
 Waikane Stream near Waikane, Oahu 116-117 
 
 Waikapu, Maui, Palolo (Everett) ditch 
 
 near 144-146 
 
 South Side Waikapu ditch near 142-144 
 
 Waikapu Stream near . , 141-142 
 
 Waikapu Stream basin (Maui), measure- 
 ments in 141-146 
 
 Wailua River (North Fork) above mouth of 
 
 East Branch 98 
 
 near Lihue, Kauai 71-73 
 
 Wailua River (North Fork, East Branch of) 
 
 ~ near Lihue, Kauai 74 
 
 Wailua River (South Fork) above Waiehu 
 
 Falls, near Lihue, Kauai 66-68 
 
 Wailua River basin (Kauai), measurements 
 
 in 66-G7 
 
 Wailuku, Maui, Iao Stream near 137-139 
 
 Kahakuloa Stream near 1C2 
 
 Maniania ditch near 139-140 
 
 North Waiehu Stream near 135-136 
 
 South Waiehu ditch near : . . 1C2 
 
 Page. 
 
 Wailuku, Maui, South Waieh j. Stream near 136-137 
 Waihee canal near 134-135 
 
 Wailuku River near Hilo, Hawaii. 212-213 
 
 Hilo Electric Light Co. weir at 381 
 
 Waimanalo, Oahu, Kahanaiki Stream near. . 121 
 
 Kailua Stream near 122 
 
 Kaimi Stream near * 124 
 
 Kamakalepo Stream near 123 
 
 Makawao ditch near 125 
 
 Makawao Stream near 124-125 
 
 Pohakea Stream near 122-123 
 
 pump ditch near .... 127-128 
 
 Waimanalo ditch near 126-127 
 
 Wong Leong ditch near 125-126 
 
 Waimanu, Hawaii, Waimanu Stream near . . 381 
 
 Waimea, Kauai, Halehaku Stream (North 
 
 Fork) at 98 
 
 Halekua Stream near 50 
 
 Kamenehue ditch near 47-^8 
 
 Kauaikanana Stream near 98 
 
 Kawaikoi Stream near 35-37 
 
 Kekaha ditch near 40-45 
 
 Makaweli River near 48-50 
 
 Mohihi Stream near 38-39 
 
 Olokele ditch near 52-53 
 
 Poowaiomahaihai ditch near 53-54 
 
 Waiakoali Stream near 37-38 
 
 Waialae Stream near 38-39 
 
 Waimea ditch near 45-47 
 
 Waimea River at or near 34-35, 98 
 
 Waimea River basin (Kauai), measurements 
 
 in 34-48 
 
 Wainamuamu weir, near Kapaa, Kauai, 
 Kaehulua Stream (South Fork) 
 at 81-82 
 
 Wainiha, Kauai, Lumahai River near 95 
 
 Wainiha canal near 97-98 
 
 Wainiha River near 95-97 
 
 Waiomao Stream above Pukele Stream, 
 
 near Honolulu, Oahu . . 102-104 
 
 near Honolulu, Oahu 100-102 
 
 Waipio, Hawaii, Kawainui River near 367-368 
 
 New Hamakua ditch near 369-370 
 
 Waipio River near (below Koiawe) 368 
 
 (below Waima) 309 
 
 Waiuli ditch at Kilauea, Kauai 98 
 
 near Kilauea, Kauai, seepage and loss 
 
 from 99 
 
 Weir measurements, advantages and disad- 
 vantages of 11-12 
 
 West Maui, miscellaneous measurements on. 162 
 
 White, G. R., work of 25 
 
 Wilcox ditch near Koloa, Kauai 98 
 
 Wong Leong ditch, Kailua Valley, Oahu, 
 
 Kailu Stream near 128 
 
 Wong Leong ditch near Waimanalo, Oahu. 125-126 
 
 Wood, B . D . , work of 25 
 
 Work, division of 24-25 
 
 O 
 
 »t 
 

mm 
 
 -H dft&'.